Could co-limitation be caused by different nutrients limiting shoots and roots? Melany Fisk
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(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.
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Nitrogen, phosphorus and fine roots
Tim Fahey discusses fine root biomass responses to nutrient additions. Adding both nitrogen and phosphorus causes a large increase in fine root biomass in young tree stands, likely because new root growth is colimited by both nutrients. While increased soil fertility may generally decrease belowground carbon allocation and fine root biomass, nitrogen-phosphorus colimitation could stimulate increased fine root biomass if only one nutrient is added. The presentation acknowledges contributions from the shoestring research team including Alexis Heinz, Shiyi, and Geoff Wilson.
Aboveground growth responds more to P than N
1. A study examined how nitrogen (N) and phosphorus (P) limitation affects aboveground growth in northern hardwood forests of different ages.
2. The study applied N, P, and N+P fertilizer treatments to young, mid-age, and mature forest stands over 5 years and measured tree growth responses.
3. The results showed that aboveground growth responded more to P fertilization in mid-age and mature forests, while growth in young forests responded more to N fertilization, indicating that P limits older stands while N limits younger stands.
Root foraging for apatite is influenced by N and P availability
(1) Fine roots of plants in mature northern hardwood forests were found to forage for patches of apatite, a primary mineral source of phosphorus, when phosphorus was limiting. (2) When phosphorus was added to the soil, fine root foraging for apatite decreased, since phosphorus availability was no longer limiting. (3) Addition of nitrogen to the soil increased overall fine root growth but did not change foraging for apatite, indicating that nitrogen increases plant demand for phosphorus.
MELNHE overview 2016
The document summarizes findings from a study conducted at 3 sites with a total of 9 stands of varying ages. At each site there were 2 stands, one mid-age and one mature. The 3 young, 3 mid-age and 3 mature stands were located at one of the sites. The study found that foliar N:P ratios indicated colimitation by nitrogen and phosphorus. Mature stands responded more to phosphorus additions while young stands responded more to nitrogen additions. Phosphorus additions decreased soil respiration and sap flow while calcium additions increased sap flow. Phosphorus additions also increased microbial phosphorus while nitrogen additions decreased microbial nitrogen. Both nitrogen and phosphorus additions also increased root biomass.
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?
What is co-limitation, really?
This document discusses co-limitation of nitrogen and phosphorus in northern hardwood forests. It summarizes previous research showing N and P co-limitation based on fertilization studies. Co-limitation is defined as a larger productivity response to adding N and P together versus individually. The project aims to determine if northern hardwood forests are co-limited by N and P, and if soil nutrient interactions contribute to any co-limitation. Studies are being conducted at multiple sites testing the effects of N, P, and N+P additions on tree growth and soil nutrients. Preliminary results suggest forests are mostly P-limited, but N and P interactions could induce sequential limitations over time through microbial uptake effects.
Agren 2012 - by Brian Smithers
1. The document discusses modeling the interaction between nitrogen and phosphorus limitation on plant growth. It challenges the established view of Liebig's Law of the Minimum which states that plant growth is limited by a single nutrient.
2. The document proposes the Multiple Limitation Hypothesis which argues that plant growth is simultaneously co-limited by several resources through flexible allocation between nitrogen and phosphorus uptake.
3. Flexible allocation allows plants to direct more resources to acquiring the limiting nutrient, increasing growth rates when both nitrogen and phosphorus availability is increased compared to increasing them individually.
Reno PosterFINAL
This study evaluated the effects of applying polymer-coated urea (PCU) at reduced rates on Kentucky bluegrass turf. PCU is a controlled-release fertilizer that can improve nitrogen use efficiency. The study applied PCU at 50%, 75%, and 100% of the recommended rate and compared it to urea applied monthly or all at once. PCU showed no response for 6 weeks but the 75% and 100% rates produced growth, verdure, and nitrogen content equivalent to split urea applications by the end. The 50% rate resulted in reduced growth and nitrogen. PCU can be effectively applied at rates between 50-75% to match the positive effects of split urea with potentially lower nitrogen losses and
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Nitrogen, phosphorus and fine roots
Tim Fahey discusses fine root biomass responses to nutrient additions. Adding both nitrogen and phosphorus causes a large increase in fine root biomass in young tree stands, likely because new root growth is colimited by both nutrients. While increased soil fertility may generally decrease belowground carbon allocation and fine root biomass, nitrogen-phosphorus colimitation could stimulate increased fine root biomass if only one nutrient is added. The presentation acknowledges contributions from the shoestring research team including Alexis Heinz, Shiyi, and Geoff Wilson.
Aboveground growth responds more to P than N
1. A study examined how nitrogen (N) and phosphorus (P) limitation affects aboveground growth in northern hardwood forests of different ages.
2. The study applied N, P, and N+P fertilizer treatments to young, mid-age, and mature forest stands over 5 years and measured tree growth responses.
3. The results showed that aboveground growth responded more to P fertilization in mid-age and mature forests, while growth in young forests responded more to N fertilization, indicating that P limits older stands while N limits younger stands.
Root foraging for apatite is influenced by N and P availability
(1) Fine roots of plants in mature northern hardwood forests were found to forage for patches of apatite, a primary mineral source of phosphorus, when phosphorus was limiting. (2) When phosphorus was added to the soil, fine root foraging for apatite decreased, since phosphorus availability was no longer limiting. (3) Addition of nitrogen to the soil increased overall fine root growth but did not change foraging for apatite, indicating that nitrogen increases plant demand for phosphorus.
MELNHE overview 2016
The document summarizes findings from a study conducted at 3 sites with a total of 9 stands of varying ages. At each site there were 2 stands, one mid-age and one mature. The 3 young, 3 mid-age and 3 mature stands were located at one of the sites. The study found that foliar N:P ratios indicated colimitation by nitrogen and phosphorus. Mature stands responded more to phosphorus additions while young stands responded more to nitrogen additions. Phosphorus additions decreased soil respiration and sap flow while calcium additions increased sap flow. Phosphorus additions also increased microbial phosphorus while nitrogen additions decreased microbial nitrogen. Both nitrogen and phosphorus additions also increased root biomass.
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?
What is co-limitation, really?
This document discusses co-limitation of nitrogen and phosphorus in northern hardwood forests. It summarizes previous research showing N and P co-limitation based on fertilization studies. Co-limitation is defined as a larger productivity response to adding N and P together versus individually. The project aims to determine if northern hardwood forests are co-limited by N and P, and if soil nutrient interactions contribute to any co-limitation. Studies are being conducted at multiple sites testing the effects of N, P, and N+P additions on tree growth and soil nutrients. Preliminary results suggest forests are mostly P-limited, but N and P interactions could induce sequential limitations over time through microbial uptake effects.
Agren 2012 - by Brian Smithers
1. The document discusses modeling the interaction between nitrogen and phosphorus limitation on plant growth. It challenges the established view of Liebig's Law of the Minimum which states that plant growth is limited by a single nutrient.
2. The document proposes the Multiple Limitation Hypothesis which argues that plant growth is simultaneously co-limited by several resources through flexible allocation between nitrogen and phosphorus uptake.
3. Flexible allocation allows plants to direct more resources to acquiring the limiting nutrient, increasing growth rates when both nitrogen and phosphorus availability is increased compared to increasing them individually.
Reno PosterFINAL
This study evaluated the effects of applying polymer-coated urea (PCU) at reduced rates on Kentucky bluegrass turf. PCU is a controlled-release fertilizer that can improve nitrogen use efficiency. The study applied PCU at 50%, 75%, and 100% of the recommended rate and compared it to urea applied monthly or all at once. PCU showed no response for 6 weeks but the 75% and 100% rates produced growth, verdure, and nitrogen content equivalent to split urea applications by the end. The 50% rate resulted in reduced growth and nitrogen. PCU can be effectively applied at rates between 50-75% to match the positive effects of split urea with potentially lower nitrogen losses and
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.
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.
Rgp of selected hardwood tree species
1) The study examined the effect of different root pruning lengths on root growth in four tropical hardwood tree species in the Philippines.
2) It found that root growth, as measured by the number of new roots developed and length of tap root extension, was significantly affected by pruning length and increased with root pruning compared to no pruning.
3) Different species responded variably to pruning lengths, but most showed a positive response in terms of new root production and tap root extension with pruning.
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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.
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3) The primary objective is to distinguish the characteristics of woody debris corresponding to different successional stages in northern hardwood forests.
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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.
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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.
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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.
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2) It found that root growth, as measured by the number of new roots developed and length of tap root extension, was significantly affected by pruning length and increased with root pruning compared to no pruning.
3) Different species responded variably to pruning lengths, but most showed a positive response in terms of new root production and tap root extension with pruning.
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This document summarizes a presentation on competition for space, light and nutrients in forest stands. It begins with an introduction defining competition and describing it as either symmetric or asymmetric. It then outlines the presentation's sections and provides details on three methodologies studied for assessing regeneration status and seedling survival under different spacing conditions. The results section finds seedling density and growth correlated with gap size and neighbor distance. Discussion notes competition's influence on evolution. The conclusion states competition alters species survival and growth, with light competition asymmetric and below-ground competition symmetric. It recommends further study to harmonize compatible species arrangements.
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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.
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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.
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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.
Asm2018 5 yanai
Sampling intensity affects the ability to detect changes over time in soil nutrient concentrations. Higher sampling intensity through more samples or sampling sites allows for detection of smaller minimum detectable differences. A study analyzed how sampling intensity over time and space impacted the minimum detectable annual percentage change for concentrations of total carbon, nitrogen, and exchangeable magnesium, calcium, and potassium at different soil depths. The results provide guidance on sampling designs to balance detecting desired changes against costs of sample collection and analysis for soil monitoring.
Asm2018 4 y.yang
Using uncertainty analysis to provide sampling guidance in monitoring fish and loons for mercury pollution
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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
Fine dining: root morphology, mycorrhizal colonization, and nutrient amendmen...
Fine dining: root morphology, mycorrhizal colonization, and nutrient amendmen...
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.
Overview of the Global Peatlands Assessment
Presented by Patrick Scheel at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and Action
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.
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.
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
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
ENVIRONMENT~ Renewable Energy Sources and their future prospects.
This presentation is for us to know that how our Environment need Attention for protection of our natural resources which are depleted day by day that's why we need to take time and shift our attention to renewable energy sources instead of non-renewable sources which are better and Eco-friendly for our environment. these renewable energy sources are so helpful for our planet and for every living organism which depends on environment.
Climate Change All over the World .pptx
Climate change refers to significant and lasting changes in the average weather patterns over periods ranging from decades to millions of years. It encompasses both global warming driven by human emissions of greenhouse gases and the resulting large-scale shifts in weather patterns. While climate change is a natural phenomenon, human activities, particularly since the Industrial Revolution, have accelerated its pace and intensity
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.
Wildlife-AnIntroduction.pdf so that you know more about our environment
All about wildlife, if you are fond of animals and wildlife then do follow us for more content like this
Improving the Management of Peatlands and the Capacities of Stakeholders in I...
Improving the Management of Peatlands and the Capacities of Stakeholders in I...Global Landscapes Forum (GLF)
Presented by Sonya Dewi at GLF Peatlands 2024 - 360 Degree Approach to Improving Capacity of Multiple Stakeholders to Manage Peatland SustainablyGlobal Peatlands Map and Hotspot Explanation Atlas
Presented by Alexandra Barthelmes at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and Action
Recycling and Disposal on SWM Raymond Einyu pptx
Increasing urbanization, rural–urban migration, rising standards of living, and rapid development associated with population growth have resulted in increased solid waste generation by industrial, domestic and other activities in Nairobi City. It has been noted in other contexts too that increasing population, changing consumption patterns, economic development, changing income, urbanization and industrialization all contribute to the increased generation of waste.
With the increasing urban population in Kenya, which is estimated to be growing at a rate higher than that of the country’s general population, waste generation and management is already a major challenge. The industrialization and urbanization process in the country, dominated by one major city – Nairobi, which has around four times the population of the next largest urban centre (Mombasa) – has witnessed an exponential increase in the generation of solid waste. It is projected that by 2030, about 50 per cent of the Kenyan population will be urban.
Aim:
A healthy, safe, secure and sustainable solid waste management system fit for a world – class city.
Improve and protect the public health of Nairobi residents and visitors.
Ecological health, diversity and productivity and maximize resource recovery through the participatory approach.
Goals:
Build awareness and capacity for source separation as essential components of sustainable waste management.
Build new environmentally sound infrastructure and systems for safe disposal of residual waste and replacing current dumpsites which should be commissioned.
Current solid waste management situation:
The status.
Solid waste generation rate is at 2240 tones / day
collection efficiently is at about 50%.
Actors i.e. city authorities, CBO’s , private firms and self-disposal
Current SWM Situation in Nairobi City:
Solid waste generation – collection – dumping
Good Practices:
• Separation – recycling – marketing.
• Open dumpsite dandora dump site through public education on source separation of waste, of which the situation can be reversed.
• Nairobi is one of the C40 cities in this respect , various actors in the solid waste management space have adopted a variety of technologies to reduce short lived climate pollutants including source separation , recycling , marketing of the recycled products.
• Through the network, it should expect to benefit from expertise of the different actors in the network in terms of applicable technologies and practices in reducing the short-lived climate pollutants.
Good practices:
Despite the dismal collection of solid waste in Nairobi city, there are practices and activities of informal actors (CBOs, CBO-SACCOs and yard shop operators) and other formal industrial actors on solid waste collection, recycling and waste reduction.
Practices and activities of these actor groups are viewed as innovations with the potential to change the way solid waste is handled.
CHALLENGES:
• Resource Allocation.
Microbial characterisation and identification, and potability of River Kuywa ...
Microbial characterisation and identification, and potability of River Kuywa ...Open Access Research Paper
Water contamination is one of the major causes of water borne diseases worldwide. In Kenya, approximately 43% of people lack access to potable water due to human contamination. River Kuywa water is currently experiencing contamination due to human activities. Its water is widely used for domestic, agricultural, industrial and recreational purposes. This study aimed at characterizing bacteria and fungi in river Kuywa water. Water samples were randomly collected from four sites of the river: site A (Matisi), site B (Ngwelo), site C (Nzoia water pump) and site D (Chalicha), during the dry season (January-March 2018) and wet season (April-July 2018) and were transported to Maseno University Microbiology and plant pathology laboratory for analysis. The characterization and identification of bacteria and fungi were carried out using standard microbiological techniques. Nine bacterial genera and three fungi were identified from Kuywa river water. Clostridium spp., Staphylococcus spp., Enterobacter spp., Streptococcus spp., E. coli, Klebsiella spp., Shigella spp., Proteus spp. and Salmonella spp. Fungi were Fusarium oxysporum, Aspergillus flavus complex and Penicillium species. Wet season recorded highest bacterial and fungal counts (6.61-7.66 and 3.83-6.75cfu/ml) respectively. The results indicated that the river Kuywa water is polluted and therefore unsafe for human consumption before treatment. It is therefore recommended that the communities to ensure that they boil water especially for drinking.
Enhanced action and stakeholder engagement for sustainable peatland management
Enhanced action and stakeholder engagement for sustainable peatland managementGlobal Landscapes Forum (GLF)
Presented by Jan Peters at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and ActionPromoting Multilateral Cooperation for Sustainable Peatland management
Presented by Agus Julianto on GLF Peatlands 2024 - 360 Degree Approach to Improving Capacity of Multiple Stakeholders to Manage Peatland Sustainably
Peatlands of Latin America and the Caribbean
Presented by The Global Peatlands Assessment: Mapping, Policy, and Action at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and Action
Peatland Management in Indonesia, Science to Policy and Knowledge Education
Peatland Management in Indonesia, Science to Policy and Knowledge EducationGlobal Landscapes Forum (GLF)
Presented by Feri Johana at GLF Peatlands 2024 - 360 Degree Approach to Improving Capacity of Multiple Stakeholders to Manage Peatland SustainablyRecently uploaded (20)
Optimizing Post Remediation Groundwater Performance with Enhanced Microbiolog...
Optimizing Post Remediation Groundwater Performance with Enhanced Microbiolog...
Improving the viability of probiotics by encapsulation methods for developmen...
Improving the viability of probiotics by encapsulation methods for developmen...
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...
ENVIRONMENT~ Renewable Energy Sources and their future prospects.
ENVIRONMENT~ Renewable Energy Sources and their future prospects.
Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...
Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...
Wildlife-AnIntroduction.pdf so that you know more about our environment
Wildlife-AnIntroduction.pdf so that you know more about our environment
Improving the Management of Peatlands and the Capacities of Stakeholders in I...
Improving the Management of Peatlands and the Capacities of Stakeholders in I...
Global Peatlands Map and Hotspot Explanation Atlas
Global Peatlands Map and Hotspot Explanation Atlas
Microbial characterisation and identification, and potability of River Kuywa ...
Microbial characterisation and identification, and potability of River Kuywa ...
Enhanced action and stakeholder engagement for sustainable peatland management
Enhanced action and stakeholder engagement for sustainable peatland management
Promoting Multilateral Cooperation for Sustainable Peatland management
Promoting Multilateral Cooperation for Sustainable Peatland management
world-environment-day-2024-240601103559-14f4c0b4.pptx
world-environment-day-2024-240601103559-14f4c0b4.pptx
Peatland Management in Indonesia, Science to Policy and Knowledge Education
Peatland Management in Indonesia, Science to Policy and Knowledge Education
Could co-limitation be caused by different nutrients limiting shoots and roots? Melany Fisk
- 2. Elser et al. (2007) Ecology Letters Intro to MELNHE • Co-limitation: adding 2 resources together increases productivity more so than adding either alone • Lots of interest; limited mechanistic understanding • MELNHE study conceived to examine co-limitation in more detail
- 3. Thirteen forest stands: • 3 sites: Hubbard Brook (HB), Jeffers Brook (JB), Bartlett (BEF) • 3 ages: young (~30 yrs), mid (~45 yrs), and mature (>100 yrs) • Color-coded General question: • Is forest productivity co-limited by N and P? So far (among many results): • Tree growth limited primarily by P (2011-2015; Goswami et al. 2018) • No obvious co-limitation detected N: 30 kg/ha/yr P: 10 kg/ha/yr N+P Control One forest stand: four 50 x 50 m treatment plots NxP fertilization initiated in 2011
- 4. Testing limitation control nutrient addition Limitation is inferred if added nutrient increases growth What about belowground?
- 5. Testing limitation of root growth control nutrient addition Limitation is inferred if added nutrient increases growth What about belowground? (1) Direct nutrient limitation of root growth
- 6. Testing limitation of root growth control nutrient addition Limitation is inferred if added nutrient increases growth What about belowground? (1) Direct nutrient limitation of root growth (2) Allocation response to aboveground limitation - alleviating aboveground limitation reduces growth
- 7. Testing limitation of root growth control nutrient-rich patch (hotspot) Limitation is inferred if added nutrient increases growth What about belowground? (1) Direct nutrient limitation of root growth (2) Allocation response to aboveground limitation - alleviating aboveground limitation reduces growth - foraging response to nutrient heterogeneity
- 8. Testing limitation of root growth Question: Is root growth controlled by (1) belowground nutrient limitation, or (2) allocation in response to aboveground limitation? (Shan et al. in review) Used root ingrowth cores in 3 mature forest stands, 2014.
- 9. Root growth: 3 mature stands Fine root growth was greater in response to N addition (direct nutrient limitation) No response to P addition (Shan et al. in review) *
- 10. Root growth: 3 mature stands Fine roots foraged for P (allocation response to aboveground limitation) Phosphorus hotspot Control soil (Shan et al. in review) Fine root ingrowth length (cm/core)
- 11. Conclusions Fine roots forage for P but their growth is limited by N Whole-tree growth may be co-limited by N and P Does N limit P acquisition? Acknowledgements: Funding from LTER, NSF, USDA; support from HBEF, BEF; participation of many students P limitation N limitation