This study mapped the vegetation types in the Jama Coaque Reserve in Ecuador using GPS waypoints collected along trails. Five vegetation types were identified: primary and secondary tropical moist forest, primary and secondary premontane cloud forest, and agroforestry. Vegetation maps showed general patterns of increasing elevation between forest types. The average starting elevation of cloud forest was 518m, agreeing with prior predictions of 525m, except along northern trails where cloud forest began at lower elevations. Future research could use drones to map forest types between trails at the reserve.
Risks of Cryogenic Landslide Hazards and Their Impact on Ecosystems in Cold E...Universität Salzburg
Research focuses on monitoring landscapes downgrading in specific conditions of Arctic ecosystems with cold climate conditions (marshes, permafrost, high humidity and moisture). Specific case study: cryogenic landslides typical for cold environments with permafrost. Area: Yamal Peninsula. Aim: analysis of the environmental changes caused by cryogenic landslides in northern land- scapes affecting sensitive Arctic ecosystems. Thaw of the permafrost layer causes destruction of the ground soil layer and activates cryogenic landslide processes. After disaster, vegetation coverage needs a long time to recover, due to the sensitivity of the specific northern environment, and land cover types change. ILWIS GIS was used to process 2 satellite images Landsat TM taken at 1988 and 2011, to assess spatiotemporal changes in the land cover types. Research shown ILWIS GIS based spatial analysis for environmental mapping.
Species Diversity and Above-ground Carbon Stock Assessments in Selected Mangr...Innspub Net
Mangrove ecosystems are known for being the rainforest of the sea. Philippines is bestowed with this naturally rich mangrove ecosystem with diverse floral and faunal species. Despite this natural abundance, mangrove ecosystems are subjected to natural and human induced degradations specifically conversion to fish shrimp ponds that resulted in diminution aside from its effect on terrestrial and oceanic carbon cycling and could also affect its important role in terms of terrestrial and oceanic carbon cycling. This study is conducted to determine
the mangrove diversity, distribution and the above-ground biomass and C-stocks in Glan and Malapatan, Sarangani Province. Purposive sampling is implemented in establishing the plots on both sites. Results show eight (8) mangrove species belonging to four (4) families are observed in both areas. Data also reveal that the mangrove ecosystem in Glan Padidu, Glan is undisturbed. Rhizophora apiculata and Sonneratia alba are found to be dominant on the two sites. Because of the large tree girths and high density of species observed on the studied areas, both forests have the potential to sequester and store large amount of atmospheric carbon. Thus, this study quantifies mangrove tree biomass in view of carbon trading as significant in lessening the effects of global warming.
Reforestation is one of the Philippines’ government efforts to restore and rehabilitate degraded mangrove ecosystems. Although there is recovery of the ecosystem in terms of vegetation, the recovery of closely-linked faunal species in terms of community structure is still understudied. This research investigates the community structure of mangrove crabs under two different management schemes: protected mangroves and reforested mangroves. The transect-plot method was employed in each management scheme to quantify the vegetation, crab assemblages and environmental variables. Community composition of crabs and mangrove trees were compared between protected and reforested mangroves using non-metric multi-dimensional scaling and analysis of similarity in PRIMER 6. Chi-squared was used to test the variance of sex ration of the crabs. Canonical Correspondence Analysis was used to determine the relationship between crabs and environmental parameters. A total of twelve species of crabs belonging to six families were identified in protected mangroves while only four species were documented in reforested mangroves. Perisesarma indiarum and Baptozius vinosus were the most dominant species in protected and reforested mangrove, respectively. Univariate analysis of variance of crab assemblage data revealed significant differences in crab composition and abundance between protected mangroves and from reforested mangroves (P<0.05).><0.05).Environmental factors and human intervention had contributed to the difference in crab assemblages in mangrove ecosystems.
Risks of Cryogenic Landslide Hazards and Their Impact on Ecosystems in Cold E...Universität Salzburg
Research focuses on monitoring landscapes downgrading in specific conditions of Arctic ecosystems with cold climate conditions (marshes, permafrost, high humidity and moisture). Specific case study: cryogenic landslides typical for cold environments with permafrost. Area: Yamal Peninsula. Aim: analysis of the environmental changes caused by cryogenic landslides in northern land- scapes affecting sensitive Arctic ecosystems. Thaw of the permafrost layer causes destruction of the ground soil layer and activates cryogenic landslide processes. After disaster, vegetation coverage needs a long time to recover, due to the sensitivity of the specific northern environment, and land cover types change. ILWIS GIS was used to process 2 satellite images Landsat TM taken at 1988 and 2011, to assess spatiotemporal changes in the land cover types. Research shown ILWIS GIS based spatial analysis for environmental mapping.
Species Diversity and Above-ground Carbon Stock Assessments in Selected Mangr...Innspub Net
Mangrove ecosystems are known for being the rainforest of the sea. Philippines is bestowed with this naturally rich mangrove ecosystem with diverse floral and faunal species. Despite this natural abundance, mangrove ecosystems are subjected to natural and human induced degradations specifically conversion to fish shrimp ponds that resulted in diminution aside from its effect on terrestrial and oceanic carbon cycling and could also affect its important role in terms of terrestrial and oceanic carbon cycling. This study is conducted to determine
the mangrove diversity, distribution and the above-ground biomass and C-stocks in Glan and Malapatan, Sarangani Province. Purposive sampling is implemented in establishing the plots on both sites. Results show eight (8) mangrove species belonging to four (4) families are observed in both areas. Data also reveal that the mangrove ecosystem in Glan Padidu, Glan is undisturbed. Rhizophora apiculata and Sonneratia alba are found to be dominant on the two sites. Because of the large tree girths and high density of species observed on the studied areas, both forests have the potential to sequester and store large amount of atmospheric carbon. Thus, this study quantifies mangrove tree biomass in view of carbon trading as significant in lessening the effects of global warming.
Reforestation is one of the Philippines’ government efforts to restore and rehabilitate degraded mangrove ecosystems. Although there is recovery of the ecosystem in terms of vegetation, the recovery of closely-linked faunal species in terms of community structure is still understudied. This research investigates the community structure of mangrove crabs under two different management schemes: protected mangroves and reforested mangroves. The transect-plot method was employed in each management scheme to quantify the vegetation, crab assemblages and environmental variables. Community composition of crabs and mangrove trees were compared between protected and reforested mangroves using non-metric multi-dimensional scaling and analysis of similarity in PRIMER 6. Chi-squared was used to test the variance of sex ration of the crabs. Canonical Correspondence Analysis was used to determine the relationship between crabs and environmental parameters. A total of twelve species of crabs belonging to six families were identified in protected mangroves while only four species were documented in reforested mangroves. Perisesarma indiarum and Baptozius vinosus were the most dominant species in protected and reforested mangrove, respectively. Univariate analysis of variance of crab assemblage data revealed significant differences in crab composition and abundance between protected mangroves and from reforested mangroves (P<0.05).><0.05).Environmental factors and human intervention had contributed to the difference in crab assemblages in mangrove ecosystems.
Above ground biomass and carbon stock estimation of Arroceros Forest Park "Th...Innspub Net
In an area where urbanization is rapidly growing, carbon is slowly sequestered which clogs the ozone layer. With forest biomass, carbon is easily sequestered and stored by trees. This research focuses on the potential carbon storage of the Arroceros Forest Park, one of the last lungs of the metropolis located in the heart of the National Capital Region, Manila, Philippines. Trees with ≥10 cm diameter at breast height (DBH) were inventoried, from two (2) hectare area of site. These trees were used in the estimation of the biomass and carbon stock. The Power-Fit Equation from Banaticla (insert year), = 0.342 (DBH (exp (0.73))) was used in the study. Results showed that Swietenia macrophylla dominated the park. Species with highest contribution of biomass and carbon is the Swietenia macrophylla with value of 149.55t/ha. The carbon formed from this was 45%, and estimated carbon stock present is 30.59Ct/ha. Total aboveground biomass and carbon stock in the forest park is estimated at 640.21t/ha, and 130.95Ct/ha, respectively. Provided the carbon stock estimate, this could give more importance to Arroceros Forest Park in carbon sequestration. Site must be protected and enhanced to promote the important role of green spaces in Metro Manila.
Human interactions with the environment are identified as one of the leading causes of climate change and variation. Modification, conversion and maintenance of land cover are all forms of anthropogenic interactions with the environment that result in a variety of vital changes to the environment that either positively or negatively feedback to the environment and climate. The identification and monitoring of these Land Use/ Land Cover Changes (LULCC) is therefore important since changes in land cover, occasioned more often than not by anthropogenic land use, alter land-atmosphere interactions upon which ecosystem services rely thus resulting in climate change and variation. Land Surface Temperature (LST) is a property of the land surface and refers to the temperature of the interface between the earth’s land surface and the atmosphere. It is therefore an important variable in land-atmosphere interactions and a climate change indicator which varies over space and in time as a function of vegetation cover, surface moisture, soil types, topography and meteorological conditions. Normalized Difference Vegetation Index (NDVI) is a numerical indicator derived from the Visible (Red) and Near Infrared (NIR) bands of the electromagnetic spectrum used in remote sensing to assess the concentration of green leaf vegetation and plant phenology. It is also an accepted and widely used parameter in characterization and assessment of vegetation change. This study uses a remote sensing approach in one of the most ecologically rich and diverse ecosystems to investigate the effect of Land Use/ Land Cover Change and in particular vegetation change on Land Surface Temperature (LST). The study area is in the Mara ecosystem located in South Western Kenya. LANDSAT satellite images for 1985, 1995, 2003 and 2010 were used to derive NDVI and LST. We found that human related Land Use/ Land Cover Change (LULCC) in the form of conversion of land for cultivation purposes has been and is taking place around the Maasai Mara National Reserve (MMNR). We also found that a negative correlation exists between LST and NDVI thus indicating that with decrease in vegetation cover and conversion to cultivated land, there is increase in Land Surface Temperature (LST).
ABSTRACT- Composite soil samples were collected from the rhizospheres of Gmelina arborea, Elaeis guineensis and Hevea brasiliensis plantations as well as the Rain Forest of over 20 years of age in Akampa L.G.A. at depths of 0-15 cm (surface soil) and 15-30 cm (sub surface soil), to examine the effects of land use and management practices on some physical, chemical and microbial properties of the soils. The soils were mainly sandy loam, strongly acid in reaction and generally low in available P, exchangeable Ca2+, K+ and Na+, but moderate in Mg2+ except for the surface soil in Elaeis guineensis plantation which was however, high in organic C (4.29 %), total N (0.37 %) and Mg (3.9 cmol kg-1). The soils regardless of the land use patterns were high in exchangeable acidity with Elaeis guineensis having the least values. Diverse species of microorganisms were isolated across the different plantations and rain forest, however, Elaeis guineensis recorded the highest microbial count. Land use altered the microbial population and also had an effect on the species composition of soil microbial communities. Bacillus spp, Pseudomonas spp., Fusarium spp., Penicillium spp and Mucor spp as well as Aspergillus niger were however, common across the study sites while other organisms were location specific suggesting vegetation and land use meddling. The effects of land use pattern were noted in the chemical and microbial alteration observed mostly in the top of rhizosphere soils. It is pertinent that good management practices such as liming, mulching as well as cover cropping be carried out to increase and maintain the fertility of the soils.
Key-words- Land use, Physicochemical and Microbial properties, Rain Forest, Rhizosphere
Environmental Changes and Effects on a Population of Smooth Newt Lissotriton ...IJEAB
The population of Lissotriton meridionalis in the area of “Bosco di Palo” Natural Park are monitored since 1995. From 2004 to 2005 in the area it was carried out a massive cutting of dead trees with evidence of alteration of the undergrowth. The study aims to verify, through the index of the population estimate, if the species has suffered changes in the size of the population following environmental changes. For the research were chosen three ponds in the wood and the data collection took place from the breeding season of 1995 – 1996 to 2014 – 2015, in each of the seasons was made an estimation of the population density. The data obtained are been compared in order to make assessments on the conservation status and persistence of the species in the site, also as a result of environmental changes suffered by “Bosco di Palo” Natural Park. The analysis of the population estimate, used in this work as an index of the conservation status of the species in the Park, confirms that, in the previous period and in the period following the die-off of trees and cutting plant health, we have substantially the same values of population size.
Above ground biomass and carbon stock estimation of Arroceros Forest Park "Th...Innspub Net
In an area where urbanization is rapidly growing, carbon is slowly sequestered which clogs the ozone layer. With forest biomass, carbon is easily sequestered and stored by trees. This research focuses on the potential carbon storage of the Arroceros Forest Park, one of the last lungs of the metropolis located in the heart of the National Capital Region, Manila, Philippines. Trees with ≥10 cm diameter at breast height (DBH) were inventoried, from two (2) hectare area of site. These trees were used in the estimation of the biomass and carbon stock. The Power-Fit Equation from Banaticla (insert year), = 0.342 (DBH (exp (0.73))) was used in the study. Results showed that Swietenia macrophylla dominated the park. Species with highest contribution of biomass and carbon is the Swietenia macrophylla with value of 149.55t/ha. The carbon formed from this was 45%, and estimated carbon stock present is 30.59Ct/ha. Total aboveground biomass and carbon stock in the forest park is estimated at 640.21t/ha, and 130.95Ct/ha, respectively. Provided the carbon stock estimate, this could give more importance to Arroceros Forest Park in carbon sequestration. Site must be protected and enhanced to promote the important role of green spaces in Metro Manila.
Human interactions with the environment are identified as one of the leading causes of climate change and variation. Modification, conversion and maintenance of land cover are all forms of anthropogenic interactions with the environment that result in a variety of vital changes to the environment that either positively or negatively feedback to the environment and climate. The identification and monitoring of these Land Use/ Land Cover Changes (LULCC) is therefore important since changes in land cover, occasioned more often than not by anthropogenic land use, alter land-atmosphere interactions upon which ecosystem services rely thus resulting in climate change and variation. Land Surface Temperature (LST) is a property of the land surface and refers to the temperature of the interface between the earth’s land surface and the atmosphere. It is therefore an important variable in land-atmosphere interactions and a climate change indicator which varies over space and in time as a function of vegetation cover, surface moisture, soil types, topography and meteorological conditions. Normalized Difference Vegetation Index (NDVI) is a numerical indicator derived from the Visible (Red) and Near Infrared (NIR) bands of the electromagnetic spectrum used in remote sensing to assess the concentration of green leaf vegetation and plant phenology. It is also an accepted and widely used parameter in characterization and assessment of vegetation change. This study uses a remote sensing approach in one of the most ecologically rich and diverse ecosystems to investigate the effect of Land Use/ Land Cover Change and in particular vegetation change on Land Surface Temperature (LST). The study area is in the Mara ecosystem located in South Western Kenya. LANDSAT satellite images for 1985, 1995, 2003 and 2010 were used to derive NDVI and LST. We found that human related Land Use/ Land Cover Change (LULCC) in the form of conversion of land for cultivation purposes has been and is taking place around the Maasai Mara National Reserve (MMNR). We also found that a negative correlation exists between LST and NDVI thus indicating that with decrease in vegetation cover and conversion to cultivated land, there is increase in Land Surface Temperature (LST).
ABSTRACT- Composite soil samples were collected from the rhizospheres of Gmelina arborea, Elaeis guineensis and Hevea brasiliensis plantations as well as the Rain Forest of over 20 years of age in Akampa L.G.A. at depths of 0-15 cm (surface soil) and 15-30 cm (sub surface soil), to examine the effects of land use and management practices on some physical, chemical and microbial properties of the soils. The soils were mainly sandy loam, strongly acid in reaction and generally low in available P, exchangeable Ca2+, K+ and Na+, but moderate in Mg2+ except for the surface soil in Elaeis guineensis plantation which was however, high in organic C (4.29 %), total N (0.37 %) and Mg (3.9 cmol kg-1). The soils regardless of the land use patterns were high in exchangeable acidity with Elaeis guineensis having the least values. Diverse species of microorganisms were isolated across the different plantations and rain forest, however, Elaeis guineensis recorded the highest microbial count. Land use altered the microbial population and also had an effect on the species composition of soil microbial communities. Bacillus spp, Pseudomonas spp., Fusarium spp., Penicillium spp and Mucor spp as well as Aspergillus niger were however, common across the study sites while other organisms were location specific suggesting vegetation and land use meddling. The effects of land use pattern were noted in the chemical and microbial alteration observed mostly in the top of rhizosphere soils. It is pertinent that good management practices such as liming, mulching as well as cover cropping be carried out to increase and maintain the fertility of the soils.
Key-words- Land use, Physicochemical and Microbial properties, Rain Forest, Rhizosphere
Environmental Changes and Effects on a Population of Smooth Newt Lissotriton ...IJEAB
The population of Lissotriton meridionalis in the area of “Bosco di Palo” Natural Park are monitored since 1995. From 2004 to 2005 in the area it was carried out a massive cutting of dead trees with evidence of alteration of the undergrowth. The study aims to verify, through the index of the population estimate, if the species has suffered changes in the size of the population following environmental changes. For the research were chosen three ponds in the wood and the data collection took place from the breeding season of 1995 – 1996 to 2014 – 2015, in each of the seasons was made an estimation of the population density. The data obtained are been compared in order to make assessments on the conservation status and persistence of the species in the site, also as a result of environmental changes suffered by “Bosco di Palo” Natural Park. The analysis of the population estimate, used in this work as an index of the conservation status of the species in the Park, confirms that, in the previous period and in the period following the die-off of trees and cutting plant health, we have substantially the same values of population size.
Designed a range of shirts for 3 seasons. According to the theme and trend forecast i developed the range of man's shirts. Printed shirts , denim shirts, brights checks are the best in all.
Climate Change and Forest Management: Adaptation of Geospatial Technologiesrsmahabir
eraction with the environment, has led to increased concerns about the impact of such disruption on major areas of sustainable development. This has resulted in various innovations in technology, policy and forged alliances at regional and international scales in an effort to reduce humans’ impact on climate. Forests provide a suitable option for reducing the net amount of carbon dioxide in the atmosphere by acting as carbon sinks, thereby forming one part of a more complete solution for combating climate change. At the same time, forests are also sensitive to changes in climate, making sustainable forest management a critical component of present and future climate change strategies. This paper examines the contribution of geospatial technologies in supporting sustainable forest management, emphasizing its use in the classification of forests, estimation of their structure, detecting change and modeling of carbon stocks.
Myanmar is one of the most forested countries in mainland South-east Asia. These forests support a large number of important species and endemics and have great value for global efforts in biodiversity conservation.
Hydrological responses to forest cover change in mountains under projected cl...Agriculture Journal IJOEAR
Abstract— This study quantified the hydrological responses to the forest cover change in the upper part of Sola River basin, Forest Creek catchment, southern Poland, under projected climatic conditions. The Soil Water Assessment Tool (SWAT) will be applied to investigate the response of the hydrology regime to deforestation and reforestation processes. Under two emission scenarios (A1B and B1, IPCC) of the general circulation model GISS_E (NASA Goddard Institute) were employed to generate future possible climatic conditions. The detailed research was performed on a Forest Creek catchment during the 2002-2012.A key point is to assess both the rate of change in hydrological conditions after the collapse of the spruce stands and the time necessary to stabilize the water management after the afforestation. The results of elaborations show that deforestation process reduces the retention by 40% (10 years), in the same time water drainage from the catchment shortened by 47%.
Quantification of deadwood littered by Acacia spp. in semi-arid ecosystems of...Innspub Net
Deadwood (DW) is an important carbon component for conservation and management of biodiversity resources. They are ubiquitous in many semi-arid ecosystems although its estimation is still posing lots of challenges. At Chimwaga woodland in Dodoma Region of Central Tanzania, seasonal quantification of DW produced by two Acacia spp. was done to evaluate the influence of each tree species, Dbh and canopy area on DW biomass and to determine their ecological role in conservation of semi-arid ecosystem. Both purposive and random sampling techniques were used in the course of a completely randomized design (CRD). Thirty trees from each species of Acacia tortilis and Acacia nilotica were studied. Results portray that DW biomass was significantly higher (P < 0.05) in the dry season than in the rain season whereby A. tortilis produced 669.0 ± 135.90kg DM/ha (dry season) and only 74.3 ± 135.90kg DM/ha (rain season) while A. nilotica produced 426.1 ± 135.90kg DM/ha (dry season) and 36.5 ± 135.90kg DM/ha (rain season). DW biomass did not correlate significantly (P > 0.05) with Dbh and canopy area. Inter-specific interactions were encountered from experimental areas where DW was littered that facilitated ecosystem balance in semi-arid areas. This information is important for estimating amount of dead wood biomass required to be retained in the forest provided that, at the expense of ecology, they are refuge for arthropods, fungi, bryophytes and other important soil microbes representing primary components of Biodiversity in semi-arid ecosystems.
Flood risk in urban centers across the Philippines is increasing due to changes in ecological and hydrological processes. Both global and local drivers are intensifying these changes. Climate change is triggering an increase in hydro-meteorological hazards. Local land cover degradation, urbanization, conversion of floodplains and inappropriate hydro infrastructures have all increased our vulnerability to hydrological hazards.
In order to design appropriate responses the role and function of riparian ecosystems in regulation of flood is required to be understood not only in both spatial and temporal contexts, but also in socio cultural and economic contexts. This paper will look at emerging evidence based approaches from landscape ecology and ecohydrology to develop community driven low cost interventions that can better understand and measure land use degradation and direct land use management actions that can aid sustainable flood risk reduction.
Continuous cover forest management system is gaining popularity to clear-felling and the rotation management system associated. Very few researches have been done to assess this management system. A harvest event was analysed in a Reinhausen forest compartment of 2ha, belonging to the state forest of Göttingen; Göttingen is situated in the state of Lower Saxony in Germany. The harvest has modified the stem number per hectare mostly in bigger class of diameter. The diameter class the most affected was between 14 and 23 cm. The harvest affected 11% of the stem in the stand and was constituted only by Fagussilvatica (7.5%) and Fraxinus excelsior (3.5%) which are the main species of this forest. The thinning removed 15% of the basal area and 16% of the volume of the forest stand. The type of thinning was thinning from above (high thinning). Apart from Fagussilvatica that the average height of trees reduces of 45cm after harvest, there was no difference on average height after harvest for other species. The harvest event has induced changes on the spatial distribution of the forest stand. The impact of this modification on environment has not been analyzed by this study.
Trees Lose Their Leaves Later in Agroforestry SystemsIJEAB
In Brazilianagroforestry systems (AFS), Cordia oncocalyx trees, a native species of Caatinga, lose their leaves late in relation to the trees of the same species occurring in secondary forest. Our hypothesis is that, due to environmental features, the trees of the AFS maintain better water status. This work aims to present environmental humidity (rainfall, soil moisture and air relative humidity) and trees (photosynthesis, stomatal conductance and transpiration) data to explain the late loss of leaves in anagrosilvopastoral system (AGP) in the Brazilian semiarid region compared to a secondary forest (SF).Meteorological data were obtained from two weather stations installed in the AGP and SF areas. The physiological traits were measured using an infrared gas analyzer. There was a correlation between physiological processes (transpiration and stomatal conductance) and soil water content in plants of AGP, but not in SF, showing some independence of the plants of this system to variations in soil moisture. This indicates that AGP plants may have developed the physiological and anatomical features that enable to them to keep photosynthesis even when climatic conditions are more severe. Although the most inhospitable environmental conditions in the AGP system, the lower density of plants, and therefore less competition for water, favoring photosynthesis longer, causing the leaves to fall later.
1. GIS Vegetation Mapping of the Jama Coaque Reserve
Third Millennium Alliance
Rachel Karlov
4/1/15
2. Introduction
Tropical rainforests provide a significant amount of resources relative to any other
ecosystem on Earth and because of their fragility they are the subjects of important
conservation efforts. Biodiversity conservation efforts are also important due to the
forests’ high number of endemic species and human-caused habitat loss (Helmer et al.,
2002). The importance of tropical rainforests can be exemplified in several ways. Their
high species richness offers a higher opportunity and capacity for change that is
important in the unpredictable environment of the rainforest (Brunig, 1977). In addition,
tropical forests play a main role in the nutrient cycle because the vegetation acts as a filter
of food and nutrients. Stands of long living trees both store a large amount of nutrient in
their trunk and release nutrients through the annual fall of leafy wood litter (Brunig,
1977). Their efficiency in conserving and filtering nutrients is evident by the low
amounts of bioelements in the stream water (Brunig, 1977).
Human interference has had a negative effect on tropical rainforests. Degradation
of rainforests by deforestation cannot be reversed and depending on the crop that is
planted, it may take hundreds of years to rebuild the soil’s ecosystem (Brunig, 1977). In
many cases the complex nutrient cycle once held in place by the rainforest can never be
attained (Brunig, 1977). Simple man-made forests with a reduced canopy cover will alter
the capacity of exchange with the environment, therefore altering the delicate balance
tropical rainforests have created over many years (Brunig, 1977). Less vegetation cover
results in reduced cloud contact and increased evapotranspiration (Lawton et al., 2001).
This along with warmer temperatures created by climate change will affect the location
of cloud forests and all the endemic species that live within them (Still et al., 1999). If
humans convert forests to vegetation cover types with a lower biomass, then large
amounts of carbon dioxide will be released into the atmosphere affecting not just local
areas, but regional and global ones as well (Brunig, 1977).
This study focuses on the forests located in the Jama Coaque Reserve in the
coastal province of Manabí, Ecuador. The reserve is a biodiversity hotspot and is home to
some of the last remaining patches of both the tropical moist evergreen forest and the
premontane cloud forest. Tropical moist forests are richer in biodiversity than cloud
forests and occur at lower elevations. They are the most structurally-complex and diverse
of the land ecosystems and are found in regions where the average temperatures of the
three warmest and three coldest months do not differ by more than 5°C (“What is a
tropical rainforest,” 2015). Rainfall is evenly distributed which allows for the growth of
broad-leaved evergreen trees (“What is a tropical rainforest?,” 2015). However, many
tropical moist forests have distinct dry and rainy seasons. Another important
characteristic of tropical moist forests is their multiple layers of vegetation from
3. understory shrubs to trees of more than 40m in height (“What is a tropical rainforest?,”
2015).
Cloud forests are a subset of tropical rainforests that occur where mountains are
frequently enveloped by orographic clouds and convective rainfall (Still et al., 1999).
Their immersion in clouds reduces solar radiation, increases humidity, and reduces
transpiration (Lawton et al., 2001). They are also particularly important in local and
regional watersheds because they regulate the seasonal release of precipitation (Still et
al., 1999). For example, horizontal precipitation on vegetation provides a source of water
during the dry season by allowing water droplets to condense directly on plants that are
surrounded by clouds (Still et al., 1999).
Vegetation mapping, which is the main focus of this project, is important because
it provides information for managing landscapes in order to sustain their biodiversity and
the structure and function of their ecosystems (Helmer et al., 2002). Maps are critical for
biodiversity planning because vegetation is linked to species composition and habitat
types and as ecosystems change over time so will their inhabitants. Vegetation mapping
at the Jama Coaque Reserve is also important because it will aid in the planning and
executing of future research projects.
The problems with mapping tropical cloud forests, however, is that typical
methods such as remote sensing and satellite imagery are difficult to use for a few
reasons. First, these forest environments typically have a complex topography. This
means that ecological zones and illumination angles change over small areas leading to
spectral confusion in which varied vegetation communities have similar spectral
signatures (Helmer et al., 2002). Second, the persistent and intermittent cloud cover
requires the use of satellite images from different dates further complicating image-based
mapping (Helmer et al., 2002). Finally, the tendency to group similar but distinct
ecological zones together may extend the apparent distribution of endemic species with
narrow distribution (Helmer et al., 2002).
The first goal of this project is to create a map that delineates the boundaries
between the five main types of vegetation cover at the Jama Coaque Reserve (JCR):
primary and secondary tropical moist evergreen forests, primary and secondary
premontane cloud forests, and agroforestry plots. Finally, the second goal is to determine
the average elevation at which the cloud forest begins. It has previously been predicted
by members of the reserve that the boundary occurs at approximately 525m of elevation.
4. Methodology and Data Analysis
The first step in the mapping process was learning how to identify the five
different forest types in the reserve. Table 1, created by the Fall Session of 2014 intern
Justine Revenaz, demonstrates how to recognize the differences between the main
vegetation types in the field. In addition to the identification table, both the EcoHike and
hikes led by the local trail guide helped with learning how to recognize the different
forest types.
TABLE 1. Description of the five different forest types at the Jama Coaque Reserve.
Modified from Justine Revenaz (2014).
The primary tropical moist evergreen forest is characterized by larger, older trees
and a high canopy. It also has a short understory that is relatively easy to walk through.
On the other hand, the secondary tropical moist forest is composed of mostly young trees
and saplings. It has a lower canopy than the primary moist forest and an impenetrable
understory. The transition to the premontane cloud forest occurs with the increased
5. presence of moss and epiphytes on trees and an increased amount of ferns and shrubs on
the ground. Selaginella, an ancient genus and a fern ally, is abundant in the reserve and
is a common understory plant (Kricher, 1999). In the cloud forest the canopy is dense and
the trees are smaller allowing little to no sunlight to shine through. The secondary
premontane cloud forest has a slightly reduced amount of epiphytes. The trees tend to be
smaller allowing more light to shine through the canopy. Groupings of crop plants mark
the agroforestry plants. Usually these include stands or rows of banana, cacao, orange,
citrus, lime, or coffee plants.
Mapping began by hiking the trails within the reserve. Every five minutes a GPS
waypoint was marked denoting the type of forest surrounding the trail. The vegetation
type at the point was analyzed based on Table 1, and the data was stored in the GPS
according to Table 2. If the type of forest changed within those five minutes the time
would stop and a waypoint of the new vegetation type would be marked. The counting
would then be reset to time zero and a new point would be taken after an additional five
minutes. If an agroforestry patch was only composed of a few trees then only one point
would be marked in the middle, but if it was a larger plot a waypoint would be marked at
both ends.
TABLE 2. GPS Waypoint Forest Classifications
Primary tropical moist evergreen TMP
Secondary tropical moist evergreen TMS
Primary premontane cloud PC
Secondary premontane cloud PS
Agroforestry patch AGR
Transition zone TRNS
Modified from Justine Revenaz (2014).
In order to create the final maps the waypoints were entered as a vector layer into
the QGIS software and combined with other layers of the reserve such as trails, elevation,
and the theorized cloud forest. The forest type layers were created by first overlapping
the trail and GPS waypoint layers. The split tool was then used to divide the trail layer
into multiple layers wherever one forest section stopped and a new one started. This was
determined by looking at the GPS waypoints.
6. Results
Two vegetation maps were created of the reserve. The first (Fig. 1) is a map of the
trails of the reserve color-coded by forest type and it includes all of the GPS waypoints
taken. It also includes the area previously theorized by reserve members to be the cloud
forest. The area of theorized cloud forest is considered any area above 525m. The second
map (Fig. 2) is similar to the first but does not include the waypoints. A box plot was also
created that shows the range in elevation for each forest type (Fig. 3).
The beginning of the cloud forests ranges from 450.21m to 560.95m and begins at
an average of 518.38m. On both the Ronquillo and Emergentes trails on the north side of
the reserve, the cloud forest begins at a much lower elevation than the theorized value
(Figure 1). Removing those two data points, the average beginning of the cloud forest is
542.08m.
Figure 1. Map of the Jama Coaque Reserve Trail System colorcoded by vegetation type. Included are all of the
GPS waypoints taken during data collection andthe area that is theorizedto be cloud forest. The forest color-
coding was created by connecting the data collectedby the GPS.
7. Figure 2. Map of the forest types along the trails of the Jama Coaque Reserve without the waypoints.
8. Figure 3. Box plot showing the range in elevations foreach forest type. The points on the left of each box
represent each of the GPS Waypoints taken for that forest type. The median is shown as a dark line andthe
mean is shown as a dashed line within the box. The whiskers represent the minimum andmaximum values of
the datasets. The average for agroforestry is 421.57m, for secondary moist is 359.18m, for primary moist is
381.48m, for transition is 484.04m, for secondary cloud is 619.23m, and for primary cloud is 579.97m.
Discussion and Conclusion
The average beginning of the cloud forest at 518.38m agrees with the previous
predictions that the cloud forest begins at around 525m. This trend does not apply to the
trails at the north side of the reserve. For example, at the Emergentes trail the cloud forest
begins at 450.21m and at the intersection of the Ronquillo and El Dorado trails the cloud
forest begins at 467.83m. One possible explanation is that the mountain ridge is lower at
this part of the reserve. This means that orographic precipitation may also occurs at a
lower elevation therefore affecting the location of the cloud forest. Another possible
explanation is that wind patterns on the northern end of the reserve are different enough
that they lead to cloud formation at a lower elevation. More research is needed in order to
provide a more detailed explanation.
9. Both the box plot and the maps display a general pattern of increasing elevation
amongst the different forest types. From lower to higher elevation the pattern goes
secondary tropical moist forest, primary tropical moist forest, transition zone, primary
cloud forest, and secondary cloud forest. The secondary cloud forest overlaps with the
primary cloud forest but is still located at higher elevations. This is due to the fact that the
highest points in the reserve are located at the ridge, which in many locations is also the
border of the reserve. The secondary cloud forest is mostly located in these areas of high
elevation where there is a neighboring pastureland or agricultural field.
Future research can be done in order to create a more detailed map of the reserve.
The type of mapping that has been done in this paper, which involves collecting GPS
points along the trails, has illuminated vertical patterns of forest change. In the future,
mapping in between the trails is needed in order to see if any patterns emerge laterally.
One possibility is to use the same method and collect GPS points by foot, but this time
traveling in between the trails. The main problem with this method is accessibility since
much of the forest floor is too dense to traverse by foot. Another possibility is the use of a
drone or unmanned aerial vehicle (UAV). Sugiura et al. (2005) developed a system that
involved mounting an imaging sensor on a UAV in order to generate a map regarding
crop status. Lucieer et al. (2010) also successfully used a UAV that provided ultra-high
resolution spatial data to map moss beds in Antarctica. In order to map the Jama-Coaque
reserve using drones and UAVs the variable topography and vegetation of the region
would need to be taken into account first.
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