Hb2015 frewert and pannafino-mychorrhizae
•Download as PPTX, PDF•
1 like•423 views
HUBBARD BROOK ECOSYSTEM STUDY, 52nd ANNUAL COOPERATORS' MEETING, Woodstock NH, Wednesday, 8 JULY 2015. Session l: Multiple Element Limitation Study Moderator: Ruth Yanai. Mychorrhizal preference change in aspen: AM vs. EM and N vs. P Austin Frewert and Jalina Pannafino, SUNY ESF This study evaluates Ectomycorrhizal colonization in the different treatment plots by counting the number of EM root tips to determine if EM colonization is less pronounced with fertilization. Both Ectomycorrhizae and Arbuscular Mycorrhizae are evaluated on the root tips of Aspen in treatment plots where it is present.
Report
Share
Report
Share
Recommended
Hb2015 barner
This document summarizes Jerome Barner's master's thesis research comparing belowground carbon allocation in tree roots, microbes, and mycorrhizal fungi under different nitrogen and phosphorus fertilization treatments. The objectives are to determine how carbon allocation to fungal compartments responds to fertilization and how fertilization affects fungal species abundance and diversity. Methods include measuring fine root biomass, soil respiration, and sequencing fungal communities from ingrowth bags under nitrogen, phosphorus, and combined nitrogen and phosphorus fertilization at three forest sites. Expected results include decreased carbon allocation and fungal diversity under nitrogen and variable responses to phosphorus, with increased fine root biomass under both nutrients.
Hb2015 sadutto-calcium
Tyler Sadutto conducted a study to understand how the addition of CaSiO3 affects soil respiration. The objectives were to measure total soil respiration, fine root production, and microbial respiration in calcium and control plots. Total soil respiration was measured every two weeks using a LI-COR 8100 and soil collars. Fine root production was measured using root screens over three weeks. Microbial respiration was measured using a base trap method on soil samples from each plot. The expected results were a decrease in fine root production, microbial respiration, and overall total soil respiration with the addition of CaSiO3.
Soil health revolution in am ag pearlstone weil
No-till combined with cover crops is revolutionizing North American agriculture and making it more regenerative on a large scale.
Research Poster Final
The document discusses a study that aimed to measure the influence of invasive European black alder (Alnus glutinosa) on soil microbial respiration compared to surrounding grass-dominated meadow soil. Soil samples were collected from black alder patches and meadow areas at a restoration site along the Buffalo River. The study predicted that black alder soil would have higher microbial respiration due to nitrogen-fixing bacteria associations, while meadow soil would have greater organic matter due to more fine roots. Results found slightly higher, but not significantly different, respiration rates in black alder soil compared to meadow soil. Organic matter content was also similar between soil types. Overall, the invasive black alder showed only minor effects on soil properties in this small
Miranda_Claggette_UCB Redwood Project
This study examined the effect of climate change on soil bacterial and fungal abundance in coast redwood forests. Soil samples were taken from three sites along a north-south climate gradient and transplanted between sites. After one and three years, bacterial and fungal abundances were measured. Bacterial abundance decreased when soils were moved from wet to dry climates, and increased from dry to wet climates. Fungal abundance was less sensitive to climate changes. The results suggest that declining fog and increasing temperatures from climate change may decrease bacterial abundance in redwood forests over time.
Hb2015 hayden-decomp
COOPERATORS' MEETING, Woodstock NH, Wednesday, 8 JULY 2015. Session l: Multiple Element Limitation Study Moderator: Ruth Yanai. Decomposition in the MELNHE plots: Filter paper and tea bags
Matthew Hayden, SUNY- ESF
Using a modified version of a new method called the Tea Bag Index, this study addresses two questions- will there be a noticeable difference in decomposition rates of tea across plots? and will the use of tea as litter be sufficient in identifying short term trends in decomposition?
Hb2015 holmes-mineralization
HUBBARD BROOK ECOSYSTEM STUDY, 52nd ANNUAL COOPERATORS' MEETING, Woodstock NH, Wednesday, 8 JULY 2015. Session l: Multiple Element Limitation Study Moderator: Ruth Yanai. Seasonal pattern of N mineralization in the MELNHE plots
Caitlin Holmes, MELNHE, cvholmes@asu.edu
I will compare N mineralization in three mature stands in the Bartlett Experimental Forest over the growing season. We are interested in observing a seasonal variance in N mineralization before and after nutrient manipulations are applied.
Biology: Ecosystems And Communities
The document discusses a 15-year study on the effects of nitrogen additions on temperate forest ecosystems. It examines how tree growth, pine needle photosynthesis, soil respiration, and soil microbial communities have responded to increased nitrogen levels in both pine and hardwood stands. The study aims to understand how these forests will adapt to long-term nitrogen fertilization.
Recommended
Hb2015 barner
This document summarizes Jerome Barner's master's thesis research comparing belowground carbon allocation in tree roots, microbes, and mycorrhizal fungi under different nitrogen and phosphorus fertilization treatments. The objectives are to determine how carbon allocation to fungal compartments responds to fertilization and how fertilization affects fungal species abundance and diversity. Methods include measuring fine root biomass, soil respiration, and sequencing fungal communities from ingrowth bags under nitrogen, phosphorus, and combined nitrogen and phosphorus fertilization at three forest sites. Expected results include decreased carbon allocation and fungal diversity under nitrogen and variable responses to phosphorus, with increased fine root biomass under both nutrients.
Hb2015 sadutto-calcium
Tyler Sadutto conducted a study to understand how the addition of CaSiO3 affects soil respiration. The objectives were to measure total soil respiration, fine root production, and microbial respiration in calcium and control plots. Total soil respiration was measured every two weeks using a LI-COR 8100 and soil collars. Fine root production was measured using root screens over three weeks. Microbial respiration was measured using a base trap method on soil samples from each plot. The expected results were a decrease in fine root production, microbial respiration, and overall total soil respiration with the addition of CaSiO3.
Soil health revolution in am ag pearlstone weil
No-till combined with cover crops is revolutionizing North American agriculture and making it more regenerative on a large scale.
Research Poster Final
The document discusses a study that aimed to measure the influence of invasive European black alder (Alnus glutinosa) on soil microbial respiration compared to surrounding grass-dominated meadow soil. Soil samples were collected from black alder patches and meadow areas at a restoration site along the Buffalo River. The study predicted that black alder soil would have higher microbial respiration due to nitrogen-fixing bacteria associations, while meadow soil would have greater organic matter due to more fine roots. Results found slightly higher, but not significantly different, respiration rates in black alder soil compared to meadow soil. Organic matter content was also similar between soil types. Overall, the invasive black alder showed only minor effects on soil properties in this small
Miranda_Claggette_UCB Redwood Project
This study examined the effect of climate change on soil bacterial and fungal abundance in coast redwood forests. Soil samples were taken from three sites along a north-south climate gradient and transplanted between sites. After one and three years, bacterial and fungal abundances were measured. Bacterial abundance decreased when soils were moved from wet to dry climates, and increased from dry to wet climates. Fungal abundance was less sensitive to climate changes. The results suggest that declining fog and increasing temperatures from climate change may decrease bacterial abundance in redwood forests over time.
Hb2015 hayden-decomp
COOPERATORS' MEETING, Woodstock NH, Wednesday, 8 JULY 2015. Session l: Multiple Element Limitation Study Moderator: Ruth Yanai. Decomposition in the MELNHE plots: Filter paper and tea bags
Matthew Hayden, SUNY- ESF
Using a modified version of a new method called the Tea Bag Index, this study addresses two questions- will there be a noticeable difference in decomposition rates of tea across plots? and will the use of tea as litter be sufficient in identifying short term trends in decomposition?
Hb2015 holmes-mineralization
HUBBARD BROOK ECOSYSTEM STUDY, 52nd ANNUAL COOPERATORS' MEETING, Woodstock NH, Wednesday, 8 JULY 2015. Session l: Multiple Element Limitation Study Moderator: Ruth Yanai. Seasonal pattern of N mineralization in the MELNHE plots
Caitlin Holmes, MELNHE, cvholmes@asu.edu
I will compare N mineralization in three mature stands in the Bartlett Experimental Forest over the growing season. We are interested in observing a seasonal variance in N mineralization before and after nutrient manipulations are applied.
Biology: Ecosystems And Communities
The document discusses a 15-year study on the effects of nitrogen additions on temperate forest ecosystems. It examines how tree growth, pine needle photosynthesis, soil respiration, and soil microbial communities have responded to increased nitrogen levels in both pine and hardwood stands. The study aims to understand how these forests will adapt to long-term nitrogen fertilization.
Photosynthetic rates of Camassia quamash under different burn regimes
1) The study examined the effect of varying burn regimes on the photosynthetic rates of Camassia quamash, a native prairie forb.
2) Productivity of C. quamash, as measured by photosynthetic rates, declined with increasing time since the last burn, with the highest rates found in plots burned in 2013.
3) Soil and foliar nitrogen levels did not significantly vary with burn regime. However, the 2013 burn plot, which had the highest photosynthetic rates, also had the highest percentages of nitrogen in the soil and foliage.
Fisiologia
This document describes a study that examined the effects of leaf age and phosphorus supply on the photosynthetic characteristics of three perennial legume species - Medicago sativa, Cullen australasicum, and Cullen pallidum. The study found that maximum photosynthetic rate and stomatal conductance increased with leaf age until full expansion, then decreased, while dark respiration decreased with leaf age. Phosphorus supply affected leaf area and emergence rate but not photosynthetic parameters. Modelling changing photosynthetic parameters over leaf age reduced estimated leaf photosynthesis compared to assuming constant parameters.
Peatland Diversity and Carbon Dynamics - BES 2011
Peatlands are carbon cycling hotspots. We characterised plant and microbial diversity, carbon stocks and greenhouse-gas fluxes in a UK blanket peat. We aim to test whether measures of functional diversity (i.e. plant functional types, and microbial molecular diversity) can be used to explain and upscale variance in ecosystem carbon dynamics.
Eric Olson - Biodiversity in the City
Eric Olson, Brandeis University
Biodiversity contributes significantly to our resilience and quality of life. Eric Olson addresses the presence of countless non-native species of plants and animals in our cities, how we can take steps to re-establish healthy ecological species relationships one yard at a time, and how our local climate can benefit.
Presented at the Urban and Suburban Carbon Farming to Reverse Global Warming conference at Harvard University on May 3, 2015, organized by Biodiversity for a Livable Climate.
www.bio4climate.org
Lewis Smith Comps Fall 2015
This document summarizes how riparian vegetation succession acts as a positive feedback loop to climate change. Increased flooding and drought caused by climate change can shift riparian plant communities towards less flood-stabilizing species, exacerbating floods. Models show vegetation changes may sequester less carbon over time. Computer models simulate how site features interact with flow regimes to influence successional phases under climate change scenarios. Overall, the feedback between vegetation shifts and climate change creates uncertainty about future riparian ecosystem responses.
Climate Change for the Southern Coastal Plain
Presentation by Dr. James M. Vose to support the Adaptive Silviculture for Climate Change (ASCC) J.W. Jones Ecological Research Center Workshop held January 12-14, 2016
AvalonPosterFinal
- NLCD Class and Climate Ratio were the best predictive factors for modeling the non-linear least squares fit (β) of cumulative fine root proportion at depth based on data from 27 NEON sites.
- Modeling was less accurate when including sites with more extreme climate ratios, indicating different factors may be needed to model those locations.
- The study aims to continentally model fine root biomass by collecting data from soil pits across the United States and using climate, soil, and ecological variables to predict β values.
Fricke adaptive management for ecosystems
69th SWCS International Annual Conference
“Making Waves in Conservation: Our Life on Land and Its Impact on Water”
July 27-30, 2014
Lombard, IL
Seminário 1 collins et all 2002_plant community (2)
1) There was a positive relationship between local and regional plant species richness in tallgrass prairie, but this relationship varied with grazing, topography, and fire frequency.
2) Experimental removal of the dominant grass Andropogon scoparius resulted in a significant increase in local species richness compared to reference plots.
3) Overall species richness was higher in grazed areas compared to ungrazed areas, but grazing did not significantly affect the relationship between number of sites occupied and average abundance across the landscape.
Seminário 4 egerton-warburton_et_al-2000-ecological_applications_mycorrhiza (2)
Seminário 4 egerton-warburton_et_al-2000-ecological_applications_mycorrhiza (2)Carlos Alberto Monteiro
This document summarizes a study that evaluated shifts in arbuscular mycorrhizal (AM) fungal communities along an anthropogenic nitrogen deposition gradient in coastal sage scrub vegetation in southern California. The researchers found that increasing nitrogen input was associated with displacement of larger-spored AM fungi species by proliferation of small-spored Glomus species. There was also a reduction in AM species richness and diversity, as well as decreases in spore abundance, root infection, and changes in spore production timing in more nitrogen-enriched sites. A fertilization experiment yielded similar results, indicating that nitrogen input likely explains the relationship between pollution and shifts in the AM communities.Presentation of Selected Ecology Paper
The document summarizes a study of long-term ecosystem changes along the coast of Israel using arboreal pollen analysis. Key findings include:
1) Forests were replaced by thorny shrub-steppe and then open-steppe around 4000-2900 years ago due to sea level rise and increased salinity.
2) A drought event linked to decreased precipitation occurred around 3200 years ago, allowing plants to recover as human agriculture declined temporarily.
3) Increased agriculture in recent decades has replaced woodlands further inland and contributed to renewed sea level rise over the past 50 years.
Short Rotation Coppicing
A brief introduction into the costs and returns of short rotation coppicing (SRC) as well as the impacts on biodiversity. A group presentation as part of my MSc course at Keele University.
CaryPPT
Higher levels of total soil respiration were found in urban forests compared to rural forests. Three potential factors influencing this were examined: microbial biomass, root biomass, and earthworm biomass. Results showed microbial and root biomass did not differ between urban and rural forests. However, earthworm biomass was significantly higher in urban forest soils and correlated with higher soil moisture levels. This suggests the increased presence of earthworms in wet urban forest soils is the likely cause of higher total soil respiration measurements in these areas.
Guarding against false discovery in large-scale dendroclimatology
Measurements of tree-ring widths are the most widely-distributed and best replicated source of surrogate environmental information on the planet, and are one of the main archives used to estimate changes in regional and global climate during the past several centuries or millennia. Because the Northern Hemisphere ring-width network is now so large, it is more crucial than ever to ensure our understanding of tree-environment relations is not influenced by decisions to include or exclude certain records. It may be the case that a particular set of ring-width records are, for whatever reason, more tightly coupled to a particular climate factor than other records from the same region or species and, as a result, may be superior estimators of that factor’s past behavior. At the same time, it is known that selecting a small number of predictors from a large pool of potential candidates increases the likelihood of a Type I error. That effect may be particularly relevant to dendroclimatology because the total number of available ring-width records is often much larger than the number of records used to produce reconstructions of large-scale climate features. As an initial step, it would be helpful if paleoclimate reconstructions derived from tree rings described more explicitly the criteria used to select ring-width records as potential predictors and specified those records excluded by that screening. By comparing ring-width chronologies and their relations with climate against the standard set by thousands of records across the hemisphere, we should be better able to distinguish climate signals from proxy noise and produce more accurate reconstructions of climate during the late Holocene.
Ecological Study
Urbanization has negatively impacted the diversity and health of organisms in Reservoir Creek. Upstream areas near residential development had higher temperatures, turbidity, and pollution compared to downstream areas with less development. Upstream sites contained only pollution-tolerant species like worms and midges, while downstream sites contained more sensitive species like mayflies and dragonflies. The changes in abiotic factors from urbanization, such as increased runoff, have disrupted the ecosystem by reducing suitable habitat and food sources for sensitive species. This loss of diversity upstream could impact the whole ecosystem if not addressed.
FrankeO final poster
Restoration of a salt marsh in Boston impacted macroinvertebrate communities. Diversity and evenness indices showed differences between the restored, impacted, and dredge spoils treatments. While the restored site had lower diversity, the community composition matched natural salt marshes, indicating successful restoration. Analysis of carbon and nitrogen content found the restored site separated trophically from the other treatments. The restored site developed a specialized feeding system with potential marine inputs, showing restoration created distinct macroinvertebrate communities.
CaryPPT
Soil respiration rates are higher in urban forests compared to rural forests. Soil respiration is the process by which carbon dioxide is released into the atmosphere through roots, organisms, and litter decomposition. It depends on factors like temperature, moisture, root density, and soil organic matter. A study measured soil respiration monthly for 10 years in Baltimore parks and found higher rates in urban forests. The hypothesis is that higher earthworm abundance in urban forests causes increased soil mixing and respiration. Methods included analyzing soil samples for microbial and root biomass, earthworm collection, and using previous temperature, moisture, tree density and soil respiration data. Understanding differences in soil respiration between urban and rural forests can provide insight into future forest carbon dynamics and climate change mitigation
ESA_FinalPoster
- The study examined how photosynthetic biomass production of native shrubs and exotic herbaceous species in a coastal sage scrub ecosystem responded to experimental rainfall manipulations.
- Rainfall was manipulated at 30 plots dominated by either native shrubs or exotic species, with plots receiving 50%, 100%, or 150% of ambient rainfall over two growing seasons.
- Biomass production was measured using NDVI and destructive biomass harvesting. Results showed native shrub biomass was not significantly affected by drought, while exotic species biomass had a greater response to high rainfall but also declined more with drought.
Climate Change and Citizen Science (West)
Observations by interested individuals help us better understand local impacts of climate change. Science researchers work with volunteers through citizen science projects to track changes in annual plant blooming, frog calling, bird ranges, and other natural phenomena. This version opens with an example from the Southwestern United States. A similar version is available highlighting the North East US .
Climate Change and Citizen Science (East)
Observations by interested individuals help us better understand local impacts of climate change. Science researchers work with volunteers through citizen science projects to track changes in annual plant blooming, frog calling, bird ranges, and other natural phenomena. This version opens with an example from the North East United States. A similar version is available highlighting the US Southwest.
Determining the Proportion of Arbuscular Mycorrhizal Fungal (AMF) Colonizatio...
This document discusses a study that quantified the proportion of arbuscular mycorrhizal fungal colonization in the root systems of sea oats plants from dune systems on natural and renourished beaches on Bald Head Island, North Carolina. The study found no significant difference in the proportions of arbuscular, vesicular, or hyphal colonization between plants from renourished and natural dune systems. This suggests that nutrient availability and soil composition are similar between sites and that the successional age of vegetation is also similar. The findings provide insight into mycorrhizal associations and soil characteristics in renourished and natural dune systems.
Roots and mycorrhiza in plantation ecosystem
This document discusses the role of roots and mycorrhizal fungi in forest ecosystems. It covers root characteristics like diameter, density, depth and seasonality. It also discusses mycorrhizal association types and how they vary in different plant species and stages of stand development. The document outlines how roots and mycorrhizal fungi influence tree productivity, carbon allocation, nutrient cycles and how they are impacted by various management activities like thinning, fertilization and soil disturbance. In conclusion, it emphasizes that fine roots and mycorrhizal associations play an important role in forest carbon and nutrient cycles and more research is needed on their dynamics under field conditions in plantation forests.
More Related Content
What's hot
Photosynthetic rates of Camassia quamash under different burn regimes
1) The study examined the effect of varying burn regimes on the photosynthetic rates of Camassia quamash, a native prairie forb.
2) Productivity of C. quamash, as measured by photosynthetic rates, declined with increasing time since the last burn, with the highest rates found in plots burned in 2013.
3) Soil and foliar nitrogen levels did not significantly vary with burn regime. However, the 2013 burn plot, which had the highest photosynthetic rates, also had the highest percentages of nitrogen in the soil and foliage.
Fisiologia
This document describes a study that examined the effects of leaf age and phosphorus supply on the photosynthetic characteristics of three perennial legume species - Medicago sativa, Cullen australasicum, and Cullen pallidum. The study found that maximum photosynthetic rate and stomatal conductance increased with leaf age until full expansion, then decreased, while dark respiration decreased with leaf age. Phosphorus supply affected leaf area and emergence rate but not photosynthetic parameters. Modelling changing photosynthetic parameters over leaf age reduced estimated leaf photosynthesis compared to assuming constant parameters.
Peatland Diversity and Carbon Dynamics - BES 2011
Peatlands are carbon cycling hotspots. We characterised plant and microbial diversity, carbon stocks and greenhouse-gas fluxes in a UK blanket peat. We aim to test whether measures of functional diversity (i.e. plant functional types, and microbial molecular diversity) can be used to explain and upscale variance in ecosystem carbon dynamics.
Eric Olson - Biodiversity in the City
Eric Olson, Brandeis University
Biodiversity contributes significantly to our resilience and quality of life. Eric Olson addresses the presence of countless non-native species of plants and animals in our cities, how we can take steps to re-establish healthy ecological species relationships one yard at a time, and how our local climate can benefit.
Presented at the Urban and Suburban Carbon Farming to Reverse Global Warming conference at Harvard University on May 3, 2015, organized by Biodiversity for a Livable Climate.
www.bio4climate.org
Lewis Smith Comps Fall 2015
This document summarizes how riparian vegetation succession acts as a positive feedback loop to climate change. Increased flooding and drought caused by climate change can shift riparian plant communities towards less flood-stabilizing species, exacerbating floods. Models show vegetation changes may sequester less carbon over time. Computer models simulate how site features interact with flow regimes to influence successional phases under climate change scenarios. Overall, the feedback between vegetation shifts and climate change creates uncertainty about future riparian ecosystem responses.
Climate Change for the Southern Coastal Plain
Presentation by Dr. James M. Vose to support the Adaptive Silviculture for Climate Change (ASCC) J.W. Jones Ecological Research Center Workshop held January 12-14, 2016
AvalonPosterFinal
- NLCD Class and Climate Ratio were the best predictive factors for modeling the non-linear least squares fit (β) of cumulative fine root proportion at depth based on data from 27 NEON sites.
- Modeling was less accurate when including sites with more extreme climate ratios, indicating different factors may be needed to model those locations.
- The study aims to continentally model fine root biomass by collecting data from soil pits across the United States and using climate, soil, and ecological variables to predict β values.
Fricke adaptive management for ecosystems
69th SWCS International Annual Conference
“Making Waves in Conservation: Our Life on Land and Its Impact on Water”
July 27-30, 2014
Lombard, IL
Seminário 1 collins et all 2002_plant community (2)
1) There was a positive relationship between local and regional plant species richness in tallgrass prairie, but this relationship varied with grazing, topography, and fire frequency.
2) Experimental removal of the dominant grass Andropogon scoparius resulted in a significant increase in local species richness compared to reference plots.
3) Overall species richness was higher in grazed areas compared to ungrazed areas, but grazing did not significantly affect the relationship between number of sites occupied and average abundance across the landscape.
Seminário 4 egerton-warburton_et_al-2000-ecological_applications_mycorrhiza (2)
Seminário 4 egerton-warburton_et_al-2000-ecological_applications_mycorrhiza (2)Carlos Alberto Monteiro
This document summarizes a study that evaluated shifts in arbuscular mycorrhizal (AM) fungal communities along an anthropogenic nitrogen deposition gradient in coastal sage scrub vegetation in southern California. The researchers found that increasing nitrogen input was associated with displacement of larger-spored AM fungi species by proliferation of small-spored Glomus species. There was also a reduction in AM species richness and diversity, as well as decreases in spore abundance, root infection, and changes in spore production timing in more nitrogen-enriched sites. A fertilization experiment yielded similar results, indicating that nitrogen input likely explains the relationship between pollution and shifts in the AM communities.Presentation of Selected Ecology Paper
The document summarizes a study of long-term ecosystem changes along the coast of Israel using arboreal pollen analysis. Key findings include:
1) Forests were replaced by thorny shrub-steppe and then open-steppe around 4000-2900 years ago due to sea level rise and increased salinity.
2) A drought event linked to decreased precipitation occurred around 3200 years ago, allowing plants to recover as human agriculture declined temporarily.
3) Increased agriculture in recent decades has replaced woodlands further inland and contributed to renewed sea level rise over the past 50 years.
Short Rotation Coppicing
A brief introduction into the costs and returns of short rotation coppicing (SRC) as well as the impacts on biodiversity. A group presentation as part of my MSc course at Keele University.
CaryPPT
Higher levels of total soil respiration were found in urban forests compared to rural forests. Three potential factors influencing this were examined: microbial biomass, root biomass, and earthworm biomass. Results showed microbial and root biomass did not differ between urban and rural forests. However, earthworm biomass was significantly higher in urban forest soils and correlated with higher soil moisture levels. This suggests the increased presence of earthworms in wet urban forest soils is the likely cause of higher total soil respiration measurements in these areas.
Guarding against false discovery in large-scale dendroclimatology
Measurements of tree-ring widths are the most widely-distributed and best replicated source of surrogate environmental information on the planet, and are one of the main archives used to estimate changes in regional and global climate during the past several centuries or millennia. Because the Northern Hemisphere ring-width network is now so large, it is more crucial than ever to ensure our understanding of tree-environment relations is not influenced by decisions to include or exclude certain records. It may be the case that a particular set of ring-width records are, for whatever reason, more tightly coupled to a particular climate factor than other records from the same region or species and, as a result, may be superior estimators of that factor’s past behavior. At the same time, it is known that selecting a small number of predictors from a large pool of potential candidates increases the likelihood of a Type I error. That effect may be particularly relevant to dendroclimatology because the total number of available ring-width records is often much larger than the number of records used to produce reconstructions of large-scale climate features. As an initial step, it would be helpful if paleoclimate reconstructions derived from tree rings described more explicitly the criteria used to select ring-width records as potential predictors and specified those records excluded by that screening. By comparing ring-width chronologies and their relations with climate against the standard set by thousands of records across the hemisphere, we should be better able to distinguish climate signals from proxy noise and produce more accurate reconstructions of climate during the late Holocene.
Ecological Study
Urbanization has negatively impacted the diversity and health of organisms in Reservoir Creek. Upstream areas near residential development had higher temperatures, turbidity, and pollution compared to downstream areas with less development. Upstream sites contained only pollution-tolerant species like worms and midges, while downstream sites contained more sensitive species like mayflies and dragonflies. The changes in abiotic factors from urbanization, such as increased runoff, have disrupted the ecosystem by reducing suitable habitat and food sources for sensitive species. This loss of diversity upstream could impact the whole ecosystem if not addressed.
FrankeO final poster
Restoration of a salt marsh in Boston impacted macroinvertebrate communities. Diversity and evenness indices showed differences between the restored, impacted, and dredge spoils treatments. While the restored site had lower diversity, the community composition matched natural salt marshes, indicating successful restoration. Analysis of carbon and nitrogen content found the restored site separated trophically from the other treatments. The restored site developed a specialized feeding system with potential marine inputs, showing restoration created distinct macroinvertebrate communities.
CaryPPT
Soil respiration rates are higher in urban forests compared to rural forests. Soil respiration is the process by which carbon dioxide is released into the atmosphere through roots, organisms, and litter decomposition. It depends on factors like temperature, moisture, root density, and soil organic matter. A study measured soil respiration monthly for 10 years in Baltimore parks and found higher rates in urban forests. The hypothesis is that higher earthworm abundance in urban forests causes increased soil mixing and respiration. Methods included analyzing soil samples for microbial and root biomass, earthworm collection, and using previous temperature, moisture, tree density and soil respiration data. Understanding differences in soil respiration between urban and rural forests can provide insight into future forest carbon dynamics and climate change mitigation
ESA_FinalPoster
- The study examined how photosynthetic biomass production of native shrubs and exotic herbaceous species in a coastal sage scrub ecosystem responded to experimental rainfall manipulations.
- Rainfall was manipulated at 30 plots dominated by either native shrubs or exotic species, with plots receiving 50%, 100%, or 150% of ambient rainfall over two growing seasons.
- Biomass production was measured using NDVI and destructive biomass harvesting. Results showed native shrub biomass was not significantly affected by drought, while exotic species biomass had a greater response to high rainfall but also declined more with drought.
Climate Change and Citizen Science (West)
Observations by interested individuals help us better understand local impacts of climate change. Science researchers work with volunteers through citizen science projects to track changes in annual plant blooming, frog calling, bird ranges, and other natural phenomena. This version opens with an example from the Southwestern United States. A similar version is available highlighting the North East US .
Climate Change and Citizen Science (East)
Observations by interested individuals help us better understand local impacts of climate change. Science researchers work with volunteers through citizen science projects to track changes in annual plant blooming, frog calling, bird ranges, and other natural phenomena. This version opens with an example from the North East United States. A similar version is available highlighting the US Southwest.
What's hot (20)
Photosynthetic rates of Camassia quamash under different burn regimes
Photosynthetic rates of Camassia quamash under different burn regimes
Seminário 1 collins et all 2002_plant community (2)
Seminário 1 collins et all 2002_plant community (2)
Seminário 4 egerton-warburton_et_al-2000-ecological_applications_mycorrhiza (2)
Seminário 4 egerton-warburton_et_al-2000-ecological_applications_mycorrhiza (2)
Guarding against false discovery in large-scale dendroclimatology
Guarding against false discovery in large-scale dendroclimatology
Viewers also liked
Determining the Proportion of Arbuscular Mycorrhizal Fungal (AMF) Colonizatio...
This document discusses a study that quantified the proportion of arbuscular mycorrhizal fungal colonization in the root systems of sea oats plants from dune systems on natural and renourished beaches on Bald Head Island, North Carolina. The study found no significant difference in the proportions of arbuscular, vesicular, or hyphal colonization between plants from renourished and natural dune systems. This suggests that nutrient availability and soil composition are similar between sites and that the successional age of vegetation is also similar. The findings provide insight into mycorrhizal associations and soil characteristics in renourished and natural dune systems.
Roots and mycorrhiza in plantation ecosystem
This document discusses the role of roots and mycorrhizal fungi in forest ecosystems. It covers root characteristics like diameter, density, depth and seasonality. It also discusses mycorrhizal association types and how they vary in different plant species and stages of stand development. The document outlines how roots and mycorrhizal fungi influence tree productivity, carbon allocation, nutrient cycles and how they are impacted by various management activities like thinning, fertilization and soil disturbance. In conclusion, it emphasizes that fine roots and mycorrhizal associations play an important role in forest carbon and nutrient cycles and more research is needed on their dynamics under field conditions in plantation forests.
Stephanie snail REUcon
The document describes a study that placed cardboard in four forest stands to collect snails and examine the effects of nitrogen, phosphorus, and calcium additions. Cardboard collection occurred four times over the summer. The results showed that only nitrogen and phosphorus additions in one stand (JBO) increased snail numbers compared to the control. Calcium additions increased snail numbers in all stands except one. The study aims to further examine the impacts of soil properties on snail populations.
Iufro uncertainty mexicov5_cw
- The document discusses Mexico's Monitoring, Reporting and Verification (MRV) system for estimating carbon stock changes in forests.
- Mexico's MRV system aims to estimate carbon stock changes and greenhouse gas emissions/removals from the LULUCF sector for national greenhouse gas inventories.
- The National Forest Inventory provides data on carbon stocks and stock changes, while satellite imagery is used to monitor forest area changes.
- Estimates show the forest sector is currently a large carbon sink, absorbing emissions from deforestation and degradation. However, uncertainties in these estimates need to be reduced to support policy decisions.
Shoestring2014 8-ca soil moisture
This document summarizes a study that added wollastonite (CaSiO3) to experimental forest plots in New Hampshire to examine the effects on soil moisture and tree productivity. Wollastonite was added to bring calcium levels back to pre-industrial amounts, as acid rain has caused leaching of calcium from soils. Previous studies at Hubbard Brook found short-term increases in transpiration and productivity after wollastonite addition. This study monitored soil moisture in wollastonite and control plots, finding one plot (C6 at 30cm depth) had significantly lower soil moisture in the wollastonite area during the growing season, suggesting higher water use by trees, though other data was inconclusive due to
Eli inventory REUcon
The document examines whether fertilizing trees leads to faster growth. It describes a study measuring the diameter growth of trees in plots with different nutrient treatments (nitrogen, phosphorus, nitrogen and phosphorus combined). The results found that yellow birch showed a strong growth response to the treatments, while previous findings of increased growth in white birch were no longer significant. Mapping of the mature tree stands was also conducted to understand tree interactions and nutrient limitations in northern forests.
Shoestring2014 6-respiration
This document summarizes research on the effects of nutrient addition on soil respiration in northern hardwood forests. It finds that:
1) Soil respiration and belowground carbon allocation declined with increasing soil nutrient availability across study sites.
2) The addition of nitrogen and phosphorus nutrients reduced soil respiration the most in the most infertile sites, likely by reducing belowground carbon allocation and root-associated respiration.
3) There were some indications that sites may have been co-limited by both nitrogen and phosphorus, as nutrient additions of both together had stronger effects on respiration in infertile sites than additions of either nutrient alone.
Sophie harrison sap flow REUcon
This document discusses a study measuring the effect of wollastonite (CaSiO3) addition on tree transpiration. Sap flow was measured in American beech, sugar maple, and yellow birch trees using the Granier method in control and wollastonite plots across three sites: Bartlett Experimental Forest, Hubbard Brook Experimental Forest, and Jeffers Brook. Preliminary results found increased sap flow in the Bartlett and Jeffers Brook wollastonite plots but decreased flow in Hubbard Brook. Statistical analysis will be done to further analyze the effects. The goal is to understand how CaSiO3 impacts forest hydrology and health with regards to acid rain to inform management practices.
Hb2013 dong foliarchem
The document examines whether stand age or soil nutrients better explain variation in foliar chemistry across tree species. Soil and foliage samples were collected from multiple sites varying in stand age. Results found that for most species, stand age did not affect foliar cation concentrations as much as natural heterogeneity in soil nutrients. Specifically, soil nutrients in the top 10cm of soil best predicted foliar calcium and magnesium concentrations for several species, including pin cherry, American beech, red maple, sugar maple, white birch, and yellow birch. The conclusion is that soil nutrient availability, rather than stand age, is the better predictor of foliar cation levels at these sites. More soil data is needed to further investigate the relationships between soil nutrients and
Hb2013 yang tissuesovertime
This document summarizes a case study examining changes in tree tissue chemistry over time in the Huntington Wildlife Forest. It analyzes nitrogen concentration in branches of American beech, red maple, sugar maple, and yellow birch from 1985 to 2012, finding significant changes. It also discusses how branch nutrients vary by branch diameter and tissue position, citing data showing higher nitrogen and potassium concentrations in smaller diameter, living branches from the upper crown. The study aims to better understand how forest productivity and sustainability are impacted by nitrogen deposition and acidification over time.
Shoestring2014 2-recovery
Recovery from disturbance requires resynchronization of ecosystem nutrient cycles. Edward B. Rastetter, MBL; Ruth Yanai, ESF; R. Quinn Thomas, VA Tech (formerly Cornell); Matt Vadeboncoeur, UNH; Tim Fahey, Cornell; Melany Fisk, UM Ohio; Bonnie Kwiatkowski, MBL; and Steven Hamburg, EDF (formerly Brown). Hubbard Brook Annual Cooperator's Meeting, W. Thornton, NH, July 10, 2014.
Yanai iufro subplenary
This document discusses quantifying uncertainty in ecosystem budgets. It provides examples of different types of uncertainty commonly encountered in ecosystem studies, including natural variability, measurement error, and model error. The document also examines specific studies that have quantified uncertainty in components of the nitrogen budget at the Hubbard Brook Experimental Forest, including precipitation inputs, streamflow outputs, forest biomass nitrogen, soil nitrogen pools, and nitrogen accumulation rates. Monte Carlo simulations were used to analyze how uncertainty in inputs propagates to uncertainty in overall budget calculations. The studies aim to improve estimates of uncertainty and identify areas where reducing uncertainty could have the most impact.
Shoestring2014 4-snails
Looking for Snails in Three MELNHE Stands. Stephanie Suttenberg, REU, SUNY ESF ‘17. Hubbard Brook Annual Cooperator's Meeting, W. Thornton, NH, July 10, 2014. Please see REU/RET conference slideshow for more recent results and interpretations.
Shoestring2014 1-4 years in
Four years in: Finally a treatment response in the MELNHE stands. Adam Wild , Research Assistant, SUNY ESF, and Lisa Carper, Student, A. Crosby Kennett High School. Hubbard Brook Annual Cooperator's Meeting, W. Thornton, NH, July 10, 2014.
Shoestring2014 10-light
This document discusses a study examining how seedling allocation and survivorship in sugar maple and American beech are influenced by light, nutrients, and moisture. The study found that seedling biomass was not nutrient limited in the first two years. Sugar maple biomass growth increased with soil moisture. Phosphorus increased relative root allocation in sugar maple. Nitrogen decreased sugar maple survivorship. Survivorship of both species decreased with increasing canopy cover, indicating response to light availability. The conclusions were that beech seedlings are less plastic than sugar maple, survivorship depends on light, and mortality at early life stages may be stochastic under canopy.
Hb2013 zahor transpiration
This study examines the impact of calcium addition on tree transpiration and root function in New England forests impacted by acid rain. Sapflux measurements showed higher transpiration rates in trees on plots with added calcium silicate compared to control plots, with the strongest response in American beech. Preliminary root analysis found higher live fine root tissue and lower embolism in yellow birch roots from the calcium treatment plot compared to the control in early spring. The study is ongoing across three sites on the White Mountain National Forest to further understand the mechanisms by which calcium impacts forest water use and health.
Hb2013 intro
These slides introduce the MELNHE session at the 2013 annual Hubbard Brook Cooperators Meeting, July 11, 2013. They set up the Shoestring presentations that will follow.
Hb2013 biche decomp
This document describes a study on leaf litter decomposition in the Melnhe stands conducted by a researcher and middle school teacher. The study tested hypotheses about what controls litter mass loss by examining the effects of nutrients, mesh size, and litter mixes from young and mature tree stands. Methods involved placing litter in plots with different nutrient treatments, mesh sizes, and litter mixes. Preliminary results found significant effects of nutrients, mesh size, and their interaction on litter mass loss, with some indication of a phosphorus effect and young stand litter decomposing faster. The researcher and teacher saw the potential for middle school students to do authentic local science.
Hb2013 kendrick moisture
This document discusses a study investigating the effects of calcium addition on soil moisture levels. The study examines six plots in New Hampshire forests that were fertilized with calcium-silicate and compares them to control plots. The study hypothesizes that soil moisture levels will decrease more in the fertilized plots, especially in older stands with lower nutrient availability and closer to the forest floor. Soil moisture data is being collected using dataloggers placed at various soil depths. Preliminary results from two sites show differing impacts of calcium addition on soil moisture, depending on stand age and nutrient levels. Future work will examine data collection improvements and additional analysis methods.
Pierre bernier iufro2014
This document discusses uncertainty in forest management planning due to climate change, changing societal expectations, and globalization. It outlines three scales of forest management and sources of uncertainty at each scale. Specifically, it notes that climate change is a major cause of current and future uncertainty since tree growth and disturbances will change in unprecedented ways over decades or centuries. The document advocates for approaches like using multiple scenarios and projections, adaptive management through continuous learning and adjustment, and mainstreaming changes to regulations to help forest managers adapt to increasing uncertainty.
Viewers also liked (20)
Determining the Proportion of Arbuscular Mycorrhizal Fungal (AMF) Colonizatio...
Determining the Proportion of Arbuscular Mycorrhizal Fungal (AMF) Colonizatio...
Similar to Hb2015 frewert and pannafino-mychorrhizae
Filling the Gaps: Arbuscular Mycorrhizal Fungi Biodiversity in the Tropical E...
Filling the Gaps: Arbuscular Mycorrhizal Fungi Biodiversity in the Tropical E...CrimsonpublishersMCDA
Filling the Gaps: Arbuscular Mycorrhizal Fungi Biodiversity in the Tropical Ecosystems by Geofrey E Soka* in Modern Concepts & Developments in AgronomyEffect of human settlement and altitude on rangeland browse woody species bio...
The International Institute for Science, Technology and Education (IISTE). Science, Technology and Medicine Journals Call for Academic Manuscripts
The effect of flooded mine subsidence on thrips and forest biodiversity in th...
Acta Phytopathologica et Entomologica Hungarica, 2008
At the end of the prosperity of the coal mining industry in Upper Silesia in Poland, new habitats were created in disturbed areas which, in the case of flooded mine subsidence, led to the formation of a type of ecological niche not encountered before. In the present work the authors describe the diversity of oak-hornbeam forest in the areas of flooded mine subsidence and the thrips communities connected with them. In 2006 and 2007, the thrips fauna of subsidence areas was sampled in biotopes directly associated with depressions (waterside, contact zones between aquatic and terrestrial-forest biotopes). In both ecosystems a total of 118 plant species and 56 thrips species were found. Disturbance of land resulting in flooded mine subsidence contributes to increased species diversity of both plants and thrips. Other kinds of disturbance such as traffic routes and its direct and indirect impact cause reduce numbers of plants and thrips species.
Root experiment FORECOMAN
This study examined the effects of intra- and inter-clonal competition on above- and below-ground growth in six Sitka spruce clones grown in both monoclonal and polyclonal mixtures. The researchers found that competitive interactions significantly increased fine root surface area in mixed plots and fine root length in pure plots for some clones and diameter classes. Competitive interactions also altered relationships between above- and below-ground variables and reduced correlations among root traits in mixed plots. Significant variation was observed among clones for many growth parameters. The two most productive clones differed in biomass partitioning, suggesting high variability among Sitka spruce clones can affect stand productivity and uniformity.
Formation Patterns of Acridid Communities in Urban Landscapes of Turkmenistan
Acridid communities of urbanized landscapes in Turkmenistan are described for the first time. General peculiarities of formation of acridid communities in urban landscapes are studying for the desert zone. The structure of the communities is determined by soil conditions, types of plant cover and the level of anthropogenic impact on the different urban biotopes.
Esa2013
Wild pollinators enhance fruit set of crops regardless of honey bee abundance. A study of 41 crop systems worldwide found universally positive associations between fruit set and wild insect visits, demonstrating the agricultural value of wild pollinators. In contrast, fruit set increased significantly with honey bee visits in only 14% of systems. Overall, wild insects were more effective pollinators as fruit set increased more with rising wild insect visitation rates compared to honey bees. The diversity and abundance of wild pollinators have declined in many agricultural landscapes, but the impacts of these declines on crop yields depends on whether wild insects or managed honey bees are more important pollinators for specific crops.
10.1007_s12223-014-0374-7
This study investigated the effects of site type (wet vs. dry) and fire severity (low, moderate, high) on ectomycorrhizal fungi, nitrogen-fixing and denitrifying bacteria, and soil properties in regenerating lodgepole pine forests that were previously impacted by mountain pine beetle infestation. The study found that site type had a much stronger influence than fire severity on all measurements. Wet and dry sites differed significantly in most soil properties and microbial communities, while fire severity caused few changes. Ectomycorrhizal diversity and community structure were strongly divided between wet and dry sites.
Applied ecology: forest pathogens
Phytophthora ramorum, plant pathogens, Armillaria, Heterobasidion, Ophiostoma, Cronartium, forest pathology, dendrology, climate change, networks
6_Arbuscular mycorrhizal colonization of Sorghum vulgare in presence of root ...
6_Arbuscular mycorrhizal colonization of Sorghum vulgare in presence of root ...Aline Bruna Martins Vaz
This document summarizes a study that investigated the effects of root endophytic fungi isolated from Myrtus communis on sorghum plants and arbuscular mycorrhizal (AM) fungi. 150 endophytic fungi isolates were obtained from M. communis roots, including 7 taxa belonging to Ascomycota. None of the endophytic fungi, except Drechslera sp., were able to colonize sorghum roots. Some endophytic fungi increased sorghum shoot dry weight or AM colonization. The population of most endophytic fungi in the sorghum rhizosphere remained similar over time, except for one fungus that increased.SoilBioHedge
This document outlines a research project called SoilBioHedge that aims to:
1) Determine how hedgerows and field margins can preserve soil biodiversity and help restore degraded soil structure and function in agricultural fields.
2) Study how landscape connectivity allows key soil organisms like earthworms and mycorrhizal fungi to disperse from hedgerows into fields.
3) Develop a predictive model of soil quality changes at field and landscape scales based on land use, management practices, and soil type.
Spatial Structure Of Pleurothallis, Masdevallia,
This study examined the spatial distribution of four epiphytic orchid genera (Pleurothallis, Epidendrum, Lepanthes, and Masdevallia) in a 30-year-old secondary cloud forest fragment in southern Ecuador. The researchers established plots at three elevations and recorded all trees, shrubs, lianas, and orchids. They found that Pleurothallis and Epidendrum exhibited clumped distributions while Lepanthes and Masdevallia were randomly distributed. Epidendrum and Pleurothallis abundance decreased with increasing elevation while Pleurothallis and Masdevallia abundance increased with elevation. Phorophyte identity and size did
Spatial Structure Of Pleurothallis, Masdevallia,
This document summarizes a study on the spatial distribution of epiphytic orchids from four genera (Pleurothallis, Epidendrum, Lepanthes, and Masdevallia) in a fragment of regenerating montane cloud forest in southern Ecuador. The study found:
1) Orchid distributions varied with altitude, with Epidendrum and Lepanthes more frequent at lower elevations and Pleurothallis and Masdevallia more abundant at higher elevations.
2) The most common host trees also had the greatest richness and numbers of orchids. Pleurothallis occupied the most host trees while Masdevallia occupied the fewest.
Spatial Structure Of Pleurothallis, Masdevallia,
This document summarizes a study on the spatial distribution of epiphytic orchids from four genera (Pleurothallis, Epidendrum, Lepanthes, and Masdevallia) in a fragment of regenerating montane cloud forest in southern Ecuador. The study found:
1) Orchid distributions varied with altitude, with Epidendrum and Lepanthes more frequent at lower elevations and Pleurothallis and Masdevallia more abundant at higher elevations.
2) The most common host trees also had the greatest richness and numbers of orchids. Pleurothallis occupied the most host trees while Masdevallia occupied the fewest.
Spatial Structure Of Pleurothallis, Masdevallia,
This document summarizes a study on the spatial distribution of epiphytic orchids from four genera (Pleurothallis, Epidendrum, Lepanthes, and Masdevallia) in a fragment of regenerating montane cloud forest in southern Ecuador. Some key findings include:
1) The most abundant orchid genus was Stelis, followed by Epidendrum, Pleurothallis, Lepanthes, and Masdevallia. Orchid distributions varied with altitude, with Epidendrum and Lepanthes more frequent at lower elevations and Pleurothallis and Masdevallia more abundant at higher elevations.
2) Orch
Influence of foliar fertilizing on stomata parameters in maize leaf (Zea mays...
In this research, the effects of foliar fertilizer Megegreen on stomata parameters of maize leaf (ZP 677) were studied. The experiment was performed on the experimental fields of the Institute of Agriculture, in Skopje, R. of Macedonia, during the 2008 and 2009. The foliar fertilizer was applied four times during the growing period in different concentrations of 0.3, 0.6 and 0.9% solution. Stomata density and size were measured on the adaxial and abaxial leaf surface from randomly selected plants from each replication in stage of silking. Stomata counts were made on the impressions from microscopic fields using the colodium method. Analyses of variance indicated that the application of foliar fertilizer has significant influence on stomata features on corn leaves. Results from research, show higher stomata density on adaxial (176,19-182,32 stomata /mm2) and abaxial surface (289,12-293,12 stomata/mm2) at variants 3 and 4. Variant 3 has the highest stomata length on adaxial surface (59,75 μm), without significant difference and the highest average length on the abaxial surface (63,00 μm), which is significantly different from the control variant. With the highest average width on adaxial leaf surface was variant 4 with 11,56 μm and on the abaxial surface was variant 2, with 13,49 μm. A positive significant correlation was observed between stomata number on the adaxial and abaxial surface of leaf (R2= 0,856**). Get the full articles at: http://www.innspub.net/volume-7-number-4-october-2015-ijaar/
Status of native woody species regeneration in the plantation
The International Institute for Science, Technology and Education (IISTE). Science, Technology and Medicine Journals Call for Academic Manuscripts
Spatial Structure Of Pleurothallis, Masdevallia,
This document summarizes a study on the spatial distribution of four genera of epiphytic orchids (Pleurothallis, Epidendrum, Lepanthes, and Masdevallia) in a fragment of regenerating montane cloud forest in southern Ecuador. The study found that the distributions of the orchid genera varied with altitude, with Epidendrum and Lepanthes more frequent at lower elevations and Pleurothallis and Masdevallia more abundant at higher elevations. Analysis also showed that Pleurothallis and Epidendrum plants tended to be clumped in distribution while Lepanthes and Masdevallia were randomly distributed, possibly due to differences in seed dispers
VJBurtonGSBIconferenceposter
This study examined the impact of microhabitats on soil invertebrate communities in a 7.7 hectare woodland on the Isle of Wight. Samples from 11 microhabitats including logs, moss, paths, and stumps showed microhabitat-specific species assemblages, with dead wood habitats hosting distinct leaf litter communities. The study also found that samples from the plantation area of the woodland had less diverse invertebrate communities than those from the deciduous area, demonstrating the local impact of land-use change on soil biodiversity. Future work aims to build a global database of studies comparing sites with different land uses to estimate average effects of human impacts on soil communities.
MAMMALS, EDGE EFFECTS, AND THE LOSS OF TROPICAL FOREST DIVERSITY Asquith & Me...
MAMMALS, EDGE EFFECTS, AND THE LOSS OF TROPICAL FOREST DIVERSITY Asquith & Me...Fundación Natura Bolivia
This document summarizes a study that experimentally tested how changes in mammal communities and wind exposure have affected tree diversity on forest fragments in Panama. The study assessed seed and seedling survival on islands and forest sites with different mammal compositions (no mammals, rats only, intermediate communities) and wind exposures (exposed, protected, interior). It was predicted that fragments with fewer mammal species would have lower seed dispersal, seed survival, and higher seedling herbivory, while exposed sites would have lower germination, seedling establishment and survival, especially in dry seasons. The results provide evidence that changes in biotic and abiotic conditions have reduced tree diversity on forest fragments by imposing multiple barriers to seedling recruitment.XIII World Forestry Congress, Buenos Aires, Argentina 2009
The document summarizes research on the biodiversity and genetic structure of English yew (Taxus baccata L.) populations in Austria. Regeneration was found to be limited by browsing and lack of light. Pole stand health varied between sites, with differences in diameter distribution. Genetic analysis found moderate genetic variation and inbreeding within populations. Monitoring, thinning, and protection from browsing were recommended to improve regeneration and conservation status.
Similar to Hb2015 frewert and pannafino-mychorrhizae (20)
Filling the Gaps: Arbuscular Mycorrhizal Fungi Biodiversity in the Tropical E...
Filling the Gaps: Arbuscular Mycorrhizal Fungi Biodiversity in the Tropical E...
Effect of human settlement and altitude on rangeland browse woody species bio...
Effect of human settlement and altitude on rangeland browse woody species bio...
The effect of flooded mine subsidence on thrips and forest biodiversity in th...
The effect of flooded mine subsidence on thrips and forest biodiversity in th...
Formation Patterns of Acridid Communities in Urban Landscapes of Turkmenistan
Formation Patterns of Acridid Communities in Urban Landscapes of Turkmenistan
6_Arbuscular mycorrhizal colonization of Sorghum vulgare in presence of root ...
6_Arbuscular mycorrhizal colonization of Sorghum vulgare in presence of root ...
Influence of foliar fertilizing on stomata parameters in maize leaf (Zea mays...
Influence of foliar fertilizing on stomata parameters in maize leaf (Zea mays...
Status of native woody species regeneration in the plantation
Status of native woody species regeneration in the plantation
MAMMALS, EDGE EFFECTS, AND THE LOSS OF TROPICAL FOREST DIVERSITY Asquith & Me...
MAMMALS, EDGE EFFECTS, AND THE LOSS OF TROPICAL FOREST DIVERSITY Asquith & Me...
XIII World Forestry Congress, Buenos Aires, Argentina 2009
XIII World Forestry Congress, Buenos Aires, Argentina 2009
More from melnhe
Distinguishing N and P addition from the air using imaging spectroscopy. Alex...
This document discusses using imaging spectroscopy and field studies to distinguish between nitrogen (N) and phosphorus (P) additions from the air. It finds that N addition reduced reflectance by producing more chlorophyll and absorbing more light, while P addition increased reflectance. When a model was trained on treatment classes (control, N, P, N+P) for 75% of plots, it predicted the other 25% of plots with 83% accuracy. Field measurements of resin-available N and P in soil aligned with clustering of tree-top spectra responses to nutrients. This indicates trees can act as remote signals of belowground nutrient availability and function.
Germinants: The next generation. Denise Rauschendorfer
The document summarizes multiple studies on germinants conducted by different researchers from 2012 to 2020. It includes population density studies of American beech and sugar maple from 2012, 2018, and 2020 by Denise Rauschendorfer, Shinjini Goswami, and Thomas Mann. It also summarizes seedling survival data collected by Shinjini Goswami, seedling light availability studies, and stem mapping works created by Alex Young using data from previous and present studies. The document is funded by USDA NIFA and NSF, and more information can be found at the provided website.
Mycorrhizal type and co-limitation of forest productivity. Noah Blumenthal
This study investigated how the two types of mycorrhizal associations in northern hardwood forests (arbuscular mycorrhizal and ectomycorrhizal) influence nutrient limitations and forest productivity. The researchers measured annual stem growth in mature forest stands between 2015-2019. They found that nutrient additions of nitrogen and phosphorus had interactive effects on productivity, suggesting co-limitation, and this effect was stronger for arbuscular mycorrhizal tree species than ectomycorrhizal species. They concluded the greater relative abundance of arbuscular mycorrhizal trees promotes nutrient co-limitation in mature northern hardwood forests.
Grow with the changes: Forest succession and woody debris. Joe Nash
1) The document analyzes data from two studies to quantify stocks of downed dead wood in northern hardwood forest stands of different ages.
2) Thirteen forest stands ages 31-145 years old were inventoried for coarse and fine woody debris using line intersect and nested subplot sampling.
3) The primary objective is to distinguish the characteristics of woody debris corresponding to different successional stages in northern hardwood forests.
Litterfall and soil respiration fluxes in the MELNHE study. Thomas Mann
This document summarizes a study examining how soil respiration and litterfall in northern hardwood forests are controlled by nutrient availability. The study measured soil CO2 fluxes and collected fine litterfall from treatment plots with different nitrogen and phosphorus additions across 13 forest stands from 2008-2019. Preliminary results found that nitrogen addition lowered soil respiration in nitrogen-poor sites from 2011-2013. While apparent trends were observed, the authors note that statistical analysis is still needed and fertilization effects on litterfall may be more complicated. Next steps include further statistical analysis and exploring why nutrient additions did not significantly impact soil respiration rates.
N-P co-limitation in young northern hardwood forest. Tim Fahey
1) The document discusses nitrogen, phosphorus, and fine roots in young northern hardwood stands.
2) It presents the hypothesis that growth of new fine roots in these stands may be co-limited by balanced mineral nutrition of nitrogen and phosphorus.
3) A factorial experiment using ingrowth cores found that fine root growth and biomass increased at the plot level in response to the addition of both nitrogen and phosphorus, but not from the addition of only one nutrient.
Fine dining: root morphology, mycorrhizal colonization, and nutrient amendmen...
This document discusses an experimental study that examined the effects of nutrient amendments on mycorrhizal colonization and root morphology in red maple seedlings. The study predicted that nitrogen amendments would decrease vesicles in roots, phosphorus amendments would increase coil structures, and root morphology would vary depending on mycorrhizal colonization and structures under each treatment type. It then describes the experimental design, data collection process involving root processing and staining, and analysis of mycorrhizal colonization and root morphology.
Could co-limitation be caused by different nutrients limiting shoots and root...
(1) The MELNHE study examines nutrient co-limitation of forest productivity across 13 forest stands of different ages located in three sites. Fertilization experiments add nitrogen, phosphorus, or both to test for co-limitation.
(2) So far, tree growth has been found to be primarily limited by phosphorus rather than nitrogen or co-limitation.
(3) A new study tested whether root growth is directly limited by nitrogen or phosphorus availability, or responds to aboveground nutrient allocation. Fine root growth responded directly to nitrogen addition but not phosphorus addition, and roots foraged more in phosphorus-rich patches.
Sugar maple leaf characteristics vary with depth in the crown and nutrient ad...
This document summarizes a study that examined how the physical, chemical, and metabolic characteristics of sugar maple leaves vary with their depth in the tree crown and with the addition of nutrients. The study found that foliar nitrogen and chlorophyll increased deeper in the crown and with nitrogen addition, while foliar phosphorus increased with phosphorus addition. The study concludes that most leaves are shaded rather than just "sun" or "shade" leaves, and that examining the vertical gradient in a tree crown can help reveal relationships between leaf characteristics and nutrients.
The timing of senescence affects foliar p resorption dan hong
This document discusses a study on the timing of senescence and its effects on foliar phosphorus (P) resorption. The study (1) examined how foliar concentration and resorption of P and other nutrients varied with N, P, and N+P additions and between species, and (2) investigated whether the timing of senescence affected foliar resorption with nutrient additions. Field collections of green leaves and litter were made over multiple dates in the fall. Results showed adding N increased foliar N but decreased foliar P, while adding P increased foliar P. P resorption efficiency was lower under P additions and proceeded over the course of the fall.
Space wars the fight for light in the stands of bartlett sarah congress
This document discusses using LiDAR to map and quantify forest canopy structure within stands at Bartlett, Hubbard Brook, and Jeffers Brook. The first steps are to create maps of the tree canopy and describe the position of each species. Field data on species heights is collected along transects and recorded. Next steps are to combine LiDAR and field data to create species-specific vegetation area index profiles and determine if treatments have affected species dominance or position in the canopy.
Having a stake in nutrient cycling effects of n and p addition on wood decay...
In a 3-year pilot study, researchers placed sugar maple wood stakes in forest stands to examine the effects of adding nitrogen, phosphorus, both nutrients, and a control on wood decay. Over 273 stakes were distributed across plots with different nutrient additions or a control at 3 sites. The stakes will be collected and analyzed to determine percent mass loss over the study period, with future analysis of nutrients, soil microbes, and their role in wood decay.
Fruiting response of ectomycorrhizal fungi to nutrient additions claudia vi...
Collecting fungal sporocarps allows researchers to survey the effects of nutrient additions on mycorrhizal fungi fitness over a larger area than soil samples alone. The study aims to determine how ectomycorrhizal sporocarp abundance and fungal community composition vary with nitrogen, phosphorus, and combined nutrient additions and between seasons. Over 4,000 sporocarps from 35 genera and 160 morphospecies were collected and will be identified using genetic techniques to analyze impacts of nutrient manipulations.
Does the fate of n depend on p availability in soil - samuel butler
This document discusses using an N15 experiment to determine if the fate of nitrogen (N) in soil depends on the availability of phosphorus (P). Previous research found that adding phosphorus suppresses resin-available nitrogen in soils. Additional studies showed that trees grew more in response to added phosphorus in mid-aged and old growth forests, but responded more to added nitrogen in younger forests. The proposed experiment would use the N15 isotope to trace nitrogen pathways through soil organic matter, plant roots, the microbial biomass, and mineral soil.
Belowground c allocation estimated as soil respiration minus aboveground litt...
This document summarizes a study estimating belowground carbon allocation in forests by measuring soil respiration and aboveground litter inputs over multiple years. The researchers found that nitrogen decreases soil respiration and likely belowground carbon allocation, while phosphorus decreases leaf litter production. Preliminary results suggest phosphorus may matter more for aboveground growth while nitrogen affects belowground processes to a greater degree.
Baby boomers are there any surviving germinants from the recent mast year -...
The document discusses a study examining how nutrient treatments affect germination rates and seedling survival of American beech and sugar maple. The study had three hypotheses: 1) germination and survival of maple would be highest with calcium addition; 2) germination and survival of beech would reflect limitation of nitrogen or phosphorus; and 3) survival may reflect nutritional value of seedlings. Methods involved counting germinants and seedlings in nutrient treatment plots over two years. Results showed beech germination increased with nitrogen and phosphorus addition, while maple decreased. Seedling survival decreased with nitrogen and phosphorus addition but increased with calcium addition, with no difference between nitrogen and phosphorus effects.
And you thought there were no earthworms in our forests
There were few earthworms found at Bartlett but many earthworms were found at Jeffers Brook. Plots at Jeffers Brook with added nitrogen had fewer earthworms, while plots with added calcium had more earthworms.
Intro for asm workshop see
This document provides information about an upcoming workshop on quantifying uncertainty in monitoring. It includes:
- Details on presenters who will discuss topics like taxonomy of uncertainty, examples from NEON, detecting differences from rain gauge and mercury monitoring data, and measuring uncertainty in the Forest Inventory and Analysis.
- An agenda that will include introductions from participants, five minute presentations followed by discussion, and a general discussion on how the workshop helped and what further assistance is needed.
- Information on current practices in reporting uncertainty from ecosystem studies, including a survey that identified major sources of uncertainty and how respondents report, understand, and view the importance of different sources.
Asm2018 7 young
Forest inventory crews were analyzed to determine measurement errors in tree diameter. The study found bias may exist due to penalties for observations more than one class off. While measurement error magnitude was identified, the most uncertain measurements may not be the most important to improve. Propagating the errors into forest inventory data product calculations like timber volume and carbon storage will show which measurements are most important to improve.
Asm2018 6 dietze
The document discusses Pecan Project's uncertainty analysis for LTER ASM 2018. It analyzes parameter uncertainty and sensitivity, and outputs uncertainty through trait meta-analysis, iterative Bayesian calibration, and variance decomposition. Key findings include growth respiration and root water uptake being highly sensitive, and stomatal conductance variability differing between conifer and hardwood species and latitudes. The analysis aims to characterize, propagate, analyze, and reduce uncertainties.
More from melnhe (20)
Distinguishing N and P addition from the air using imaging spectroscopy. Alex...
Distinguishing N and P addition from the air using imaging spectroscopy. Alex...
Germinants: The next generation. Denise Rauschendorfer
Germinants: The next generation. Denise Rauschendorfer
Mycorrhizal type and co-limitation of forest productivity. Noah Blumenthal
Mycorrhizal type and co-limitation of forest productivity. Noah Blumenthal
Grow with the changes: Forest succession and woody debris. Joe Nash
Grow with the changes: Forest succession and woody debris. Joe Nash
Litterfall and soil respiration fluxes in the MELNHE study. Thomas Mann
Litterfall and soil respiration fluxes in the MELNHE study. Thomas Mann
N-P co-limitation in young northern hardwood forest. Tim Fahey
N-P co-limitation in young northern hardwood forest. Tim Fahey
Fine dining: root morphology, mycorrhizal colonization, and nutrient amendmen...
Fine dining: root morphology, mycorrhizal colonization, and nutrient amendmen...
Could co-limitation be caused by different nutrients limiting shoots and root...
Could co-limitation be caused by different nutrients limiting shoots and root...
Sugar maple leaf characteristics vary with depth in the crown and nutrient ad...
Sugar maple leaf characteristics vary with depth in the crown and nutrient ad...
The timing of senescence affects foliar p resorption dan hong
The timing of senescence affects foliar p resorption dan hong
Space wars the fight for light in the stands of bartlett sarah congress
Space wars the fight for light in the stands of bartlett sarah congress
Having a stake in nutrient cycling effects of n and p addition on wood decay...
Having a stake in nutrient cycling effects of n and p addition on wood decay...
Fruiting response of ectomycorrhizal fungi to nutrient additions claudia vi...
Fruiting response of ectomycorrhizal fungi to nutrient additions claudia vi...
Does the fate of n depend on p availability in soil - samuel butler
Does the fate of n depend on p availability in soil - samuel butler
Belowground c allocation estimated as soil respiration minus aboveground litt...
Belowground c allocation estimated as soil respiration minus aboveground litt...
Baby boomers are there any surviving germinants from the recent mast year -...
Baby boomers are there any surviving germinants from the recent mast year -...
And you thought there were no earthworms in our forests
And you thought there were no earthworms in our forests
Recently uploaded
Optimizing Post Remediation Groundwater Performance with Enhanced Microbiolog...
Results of geophysics and pneumatic injection pilot tests during 2003 – 2007 yielded significant positive results for injection delivery design and contaminant mass treatment, resulting in permanent shut-down of an existing groundwater Pump & Treat system.
Accessible source areas were subsequently removed (2011) by soil excavation and treated with the placement of Emulsified Vegetable Oil EVO and zero-valent iron ZVI to accelerate treatment of impacted groundwater in overburden and weathered fractured bedrock. Post pilot test and post remediation groundwater monitoring has included analyses of CVOCs, organic fatty acids, dissolved gases and QuantArray® -Chlor to quantify key microorganisms (e.g., Dehalococcoides, Dehalobacter, etc.) and functional genes (e.g., vinyl chloride reductase, methane monooxygenase, etc.) to assess potential for reductive dechlorination and aerobic cometabolism of CVOCs.
In 2022, the first commercial application of MetaArray™ was performed at the site. MetaArray™ utilizes statistical analysis, such as principal component analysis and multivariate analysis to provide evidence that reductive dechlorination is active or even that it is slowing. This creates actionable data allowing users to save money by making important site management decisions earlier.
The results of the MetaArray™ analysis’ support vector machine (SVM) identified groundwater monitoring wells with a 80% confidence that were characterized as either Limited for Reductive Decholorination or had a High Reductive Reduction Dechlorination potential. The results of MetaArray™ will be used to further optimize the site’s post remediation monitoring program for monitored natural attenuation.
在线办理(lboro毕业证书)拉夫堡大学毕业证学历证书一模一样
学校原件一模一样【微信：741003700 】《(lboro毕业证书)拉夫堡大学毕业证学历证书》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
REPORT-PRESENTATION BY CHIEF SECRETARY, ANDAMAN NICOBAR ADMINISTRATION IN OA ...
Green Tribunal Andaman
按照学校原版(UAL文凭证书)伦敦艺术大学毕业证快速办理
挂科购买【(UAL毕业证书)伦敦艺术大学毕业证】【176555708微信号】留学假毕业证成绩单、外壳、offer、留信学历认证（永久存档真实可查）采用学校原版纸张、特殊工艺完全按照原版一比一制作（包括：隐形水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠，文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备，十五年致力于帮助留学生解决难题，业务范围有加拿大、英国、澳洲、韩国、美国、新加坡，新西兰等学历材料，包您满意。
【我们承诺采用的是学校原版纸张（纸质、底色、纹路），我们拥有全套进口原装设备，特殊工艺都是采用不同机器制作，仿真度基本可以达到100%，所有工艺效果都可提前给客户展示，不满意可以根据客户要求进行调整，直到满意为止！】
【业务选择办理准则】
一、工作未确定，回国需先给父母、亲戚朋友看下文凭的情况，办理一份就读学校的毕业证【微信176555708】文凭即可
二、回国进私企、外企、自己做生意的情况，这些单位是不查询毕业证真伪的，而且国内没有渠道去查询国外文凭的真假，也不需要提供真实教育部认证。鉴于此，办理一份毕业证【微信176555708】即可
三、进国企，银行，事业单位，考公务员等等，这些单位是必需要提供真实教育部认证的，办理教育部认证所需资料众多且烦琐，所有材料您都必须提供原件，我们凭借丰富的经验，快捷的绿色通道帮您快速整合材料，让您少走弯路。
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
留信网服务项目：
1、留学生专业人才库服务（留信分析）
2、国（境）学习人员提供就业推荐信服务
3、留学人员区块链存储服务
→ 【关于价格问题（保证一手价格）】
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
选择实体注册公司办理，更放心，更安全！我们的承诺：客户在留信官方认证查询网站查询到认证通过结果后付款，不成功不收费！
原版制作(Newcastle毕业证书)纽卡斯尔大学毕业证在读证明一模一样
学校原件一模一样【微信：741003700 】《(Newcastle毕业证书)纽卡斯尔大学毕业证》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...
The incorporation of a 3DCSM and completion of HRSC provided a tool for enhanced, data-driven, decisions to support a change in remediation closure strategies. Currently, an approved pilot study has been obtained to shut-down the remediation systems (ISCO, P&T) and conduct a hydraulic study under non-pumping conditions. A separate micro-biological bench scale treatability study was competed that yielded positive results for an emerging innovative technology. As a result, a field pilot study has commenced with results expected in nine-twelve months. With the results of the hydraulic study, field pilot studies and an updated risk assessment leading site monitoring optimization cost lifecycle savings upwards of $15MM towards an alternatively evolved best available technology remediation closure strategy.
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...Open Access Research Paper
Water polluted by dyestuffs compounds is a global threat to health and the environment; accordingly, we prepared a green novel sorbent chemical and Physical system from an algae, chitosan and chitosan nanoparticle and impregnated with algae with chitosan nanocomposite for the sorption of Malachite green dye from water. The algae with chitosan nanocomposite by a simple method and used as a recyclable and effective adsorbent for the removal of malachite green dye from aqueous solutions. Algae, chitosan, chitosan nanoparticle and algae with chitosan nanocomposite were characterized using different physicochemical methods. The functional groups and chemical compounds found in algae, chitosan, chitosan algae, chitosan nanoparticle, and chitosan nanoparticle with algae were identified using FTIR, SEM, and TGADTA/DTG techniques. The optimal adsorption conditions, different dosages, pH and Temperature the amount of algae with chitosan nanocomposite were determined. At optimized conditions and the batch equilibrium studies more than 99% of the dye was removed. The adsorption process data matched well kinetics showed that the reaction order for dye varied with pseudo-first order and pseudo-second order. Furthermore, the maximum adsorption capacity of the algae with chitosan nanocomposite toward malachite green dye reached as high as 15.5mg/g, respectively. Finally, multiple times reusing of algae with chitosan nanocomposite and removing dye from a real wastewater has made it a promising and attractive option for further practical applications.
Environment Conservation Rules 2023 (ECR)-2023.pptx
Bangladesh Environment Conservation Rules 2023 (ECR-2023).
Biomimicry in agriculture: Nature-Inspired Solutions for a Greener Future
Presentation made for the Webinar Series on Biomimicry for sustainability on 1st June 2024 organized by Green Building Council Sri Lanka
原版制作(Manitoba毕业证书)曼尼托巴大学毕业证学位证一模一样
学校原件一模一样【微信：741003700 】《(Manitoba毕业证书)曼尼托巴大学毕业证学位证》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Lessons from operationalizing integrated landscape approaches
Presented by James Reed at "9th Landscape Sustainability Science Forum" on 11 May 2024
学校原版(unuk学位证书)英国牛津布鲁克斯大学毕业证硕士文凭原版一模一样
原版定制【微信:bwp0011】《(unuk学位证书)英国牛津布鲁克斯大学毕业证硕士文凭》【微信:bwp0011】成绩单 、雅思、外壳、留信学历认证永久存档查询，采用学校原版纸张、特殊工艺完全按照原版一比一制作（包括：隐形水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠，文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备，十五年致力于帮助留学生解决难题，业务范围有加拿大、英国、澳洲、韩国、美国、新加坡，新西兰等学历材料，包您满意。
【业务选择办理准则】
一、工作未确定，回国需先给父母、亲戚朋友看下文凭的情况，办理一份就读学校的毕业证【微信bwp0011】文凭即可
二、回国进私企、外企、自己做生意的情况，这些单位是不查询毕业证真伪的，而且国内没有渠道去查询国外文凭的真假，也不需要提供真实教育部认证。鉴于此，办理一份毕业证【微信bwp0011】即可
三、进国企，银行，事业单位，考公务员等等，这些单位是必需要提供真实教育部认证的，办理教育部认证所需资料众多且烦琐，所有材料您都必须提供原件，我们凭借丰富的经验，快捷的绿色通道帮您快速整合材料，让您少走弯路。
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
【关于价格问题（保证一手价格）】
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
一比一原版西澳大学毕业证学历证书如何办理
原版定制【微信:741003700】《西澳大学毕业证学位证成绩单》【微信:741003700】成绩单 、雅思、外壳、留信学历认证永久存档查询，采用学校原版纸张、特殊工艺完全按照原版一比一制作（包括：隐形水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠，文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备，十五年致力于帮助留学生解决难题，业务范围有加拿大、英国、澳洲、韩国、美国、新加坡，新西兰等学历材料，包您满意。
【业务选择办理准则】
一、工作未确定，回国需先给父母、亲戚朋友看下文凭的情况，办理一份毕业证【Q微信741003700】文凭即可
二、回国进私企、外企、自己做生意的情况，这些单位是不查询毕业证真伪的，而且国内没有渠道去查询国外文凭的真假，也不需要提供真实教育部认证。鉴于此，办理一份毕业证【Q微信741003700】即可
三、进国企，银行，事业单位，考公务员等等，这些单位是必需要提供真实教育部认证的，办理教育部认证所需资料众多且烦琐，所有材料您都必须提供原件，我们凭借丰富的经验，快捷的绿色通道帮您快速整合材料，让您少走弯路。
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
【关于价格问题（保证一手价格）】
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
Improving the viability of probiotics by encapsulation methods for developmen...
Improving the viability of probiotics by encapsulation methods for developmen...Open Access Research Paper
The popularity of functional foods among scientists and common people has been increasing day by day. Awareness and modernization make the consumer think better regarding food and nutrition. Now a day’s individual knows very well about the relation between food consumption and disease prevalence. Humans have a diversity of microbes in the gut that together form the gut microflora. Probiotics are the health-promoting live microbial cells improve host health through gut and brain connection and fighting against harmful bacteria. Bifidobacterium and Lactobacillus are the two bacterial genera which are considered to be probiotic. These good bacteria are facing challenges of viability. There are so many factors such as sensitivity to heat, pH, acidity, osmotic effect, mechanical shear, chemical components, freezing and storage time as well which affects the viability of probiotics in the dairy food matrix as well as in the gut. Multiple efforts have been done in the past and ongoing in present for these beneficial microbial population stability until their destination in the gut. One of a useful technique known as microencapsulation makes the probiotic effective in the diversified conditions and maintain these microbe’s community to the optimum level for achieving targeted benefits. Dairy products are found to be an ideal vehicle for probiotic incorporation. It has been seen that the encapsulated microbial cells show higher viability than the free cells in different processing and storage conditions as well as against bile salts in the gut. They make the food functional when incorporated, without affecting the product sensory characteristics.
快速办理(Calabria毕业证书)卡拉布里亚大学毕业证在读证明一模一样
原件一模一样【微信：bwp0011】《(Calabria毕业证书)卡拉布里亚大学毕业证》【微信：bwp0011】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问微bwp0011
【主营项目】
一.毕业证【微bwp0011】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【微bwp0011】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Recently uploaded (18)
Optimizing Post Remediation Groundwater Performance with Enhanced Microbiolog...
Optimizing Post Remediation Groundwater Performance with Enhanced Microbiolog...
world-environment-day-2024-240601103559-14f4c0b4.pptx
world-environment-day-2024-240601103559-14f4c0b4.pptx
REPORT-PRESENTATION BY CHIEF SECRETARY, ANDAMAN NICOBAR ADMINISTRATION IN OA ...
REPORT-PRESENTATION BY CHIEF SECRETARY, ANDAMAN NICOBAR ADMINISTRATION IN OA ...
Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...
Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...
BASIC CONCEPT OF ENVIRONMENT AND DIFFERENT CONSTITUTENET OF ENVIRONMENT
BASIC CONCEPT OF ENVIRONMENT AND DIFFERENT CONSTITUTENET OF ENVIRONMENT
Environment Conservation Rules 2023 (ECR)-2023.pptx
Environment Conservation Rules 2023 (ECR)-2023.pptx
Biomimicry in agriculture: Nature-Inspired Solutions for a Greener Future
Biomimicry in agriculture: Nature-Inspired Solutions for a Greener Future
Lessons from operationalizing integrated landscape approaches
Lessons from operationalizing integrated landscape approaches
Improving the viability of probiotics by encapsulation methods for developmen...
Improving the viability of probiotics by encapsulation methods for developmen...
Hb2015 frewert and pannafino-mychorrhizae
- 1. A case study using big-tooth aspen Austin Frewert and Jalina Pannafino SUNY College of Environmental Science and Forestry MELHNE Project
- 2. Associate with the roots of plants in a mutualistic relationship (Brundrett 2008) Supply plants with nutrients in exchange for carbon. Make up a large portion of microbial biomass in terrestrial ecosystems (Smith & Read, 1997) Two major classes of mycorrhizal fungi: Ectomycorrhizae (EM) Arbuscular mycorrhizae (AM) Ectendomycorrhizal species associate with both AM and EM
- 3. Hartig net of EM (Brundrett 2008) In EM associations: - Mantle around the roots - Hartig net between cells - External filamentous hyphae/rhizomorphs Hyphae explore a long distance in the soil (Brundrett 2008) Trees associated: - Aspen, American beech, yellow birch, paper birch, cherryE- endoderm C-cortex Arrows- Hartig net
- 4. Arbuscule of a Glomus species (Brundrett 2008) In AM associations: - arbuscules, hyphae, and vesicles form within the roots cortex cells Hyphae do not explore long distances in the soil Trees associated: - Aspen, red maple, sugar maple, striped maple, ash
- 5. Ectomycorrhizal root tip abundance has been shown to decrease with increasing nitrogen concentrations (Kjøller 2012). Increased nitrogen in the soil reduces the production of fruiting bodies in EM fungi (Arnolds 1991).
- 6. When root exploration is limited, up to 80% of phosphorous the plant receives can be sequestered by AM hyphae (Marschner 1993). A decrease in mycorrhizal colonization has been seen in soils with high P, this is also contingent on species and the concentration of nitrogen in the soil (Baath and Spokes 1989).
- 7. It is not well understood if the phosphorous, nitrogen, or a combination cause the decrease in colonization. Photo of mycorrhizae courtesy of Austin Frewert
- 8. To determine the influence of fertilization on mycorrhizal diversity Big-tooth aspen (ectendomycorrhizal spp.) provides an opportunity to study effects of fertilization on both AM and EM associations EM and AM in associations in Melaleuca uncinata (Brundrett 2008)
- 10. -Sampling will occur in buffer plots treated with N, N&P and an untreated control in site C4 (37 years old), 106 documented P. grandidentata (big-tooth aspen) -2 trees per collection site >3 m apart ( Lilleskov et al. 2004), 2 root segments per tree (AM vs. EM) -Younger trees < 15cm DBH, Older tree specimens > 20cm DBH -Root-tracing method (Lucash et al. 2005)
- 12. Aspen root samples scanned on 1 cm grid, record root length and percent colonization Root tips sorted morphologically (AM vs. EM) under a dissecting/compound microscope Designate 5 most prominent morphologies for EM Roots cleared and stained AM will be assessed
- 13. A decrease in EM colonization is expected with N additions A decrease in AM colonization is would expected with P additions In NP a decrease in AM and EM in increase in fine root production
- 14. Arnolds, Eef. "Decline of Ectomycorrhizal Fungi in Europe." Agriculture, Ecosystems & Environment 35.2-3 (1991): 209-44. Web. Brundrett MC. 2008. Mycorrhizal Associations: The Web Resource. 7/5/15. ‹mycorrhizas.info›. Cox, Filipa, Nadia Barsoum, Erik A. Lilleskov, and Martin I. Bidartondo. "Nitrogen Availability Is a Primary Determinant of Conifer Mycorrhizas across Complex Environmental Gradients." Ecology Letters 13.9 (2010): 1103-113. Web. Kjøller, Rasmus, Lars-Ola Nilsson, Karin Hansen, Inger Kappel Schmidt, Lars Vesterdal, and Per Gundersen. "Dramatic Changes in Ectomycorrhizal Community Composition, Root Tip Abundance and Mycelial Production along a Stand-scale Nitrogen Deposition Gradient." New Phytologist 194.1 (2012): 278-86. Web. Lucash, Melissa S.; Eissenstat, Dave M.; Joslin, J. Devereux; McFarlane, Karis J.; and Yanai, Ruth D., "Estimating Nutrient Uptake by Mature Tree Roots Under Field Conditions: Challenges and Opportunities" (2007). Environmental Science and Management Faculty Publications and Presentations. Paper 111. http://pdxscholar.library.pdx.edu/esm_fac/111 Smith, Sally E., and David J. Read. "Nitrogen Nutrition of Ectomycorrhizal Plants." Mycorrhizal Symbiosis (1997): 255-75. Web.
- 15. Ruth Yanai Matt Vadeboncoeur Jerome Barner Tom Horton Shoestring crew 2015: Jessica Swindon, Matt Hayden, Tyler Sadutto, Aaliyah Jason, Isaac Jo, Nick Hoden, Jessie Smith, Briged Farrell, Caitlin Holmes
Editor's Notes
- Expand, bullet point list?
- Label E, C, and arrow How far in the soil
- How far do hyphae go?
- Reword Uptake contingent
- Show stand map
- Then what?