Master Thesis
... summarized reasons why wetland compensation sites are not ecologically successful including improper landscape position (elevation, contour, size), poor construction methods, small site size, invasion by exotic species, or occurrence of natural ...
... summarized reasons why wetland compensation sites are not ecologically successful including improper landscape position (elevation, contour, size), poor construction methods, small site size, invasion by exotic species, or occurrence of natural ...
EFFECTS OF TROPICAL FOREST FRAGMENTATION ON
... (Hylocichla mustelina) breeding ecology, no studies to date have sought to understand how fragmentation affects Wood Thrush winter ecology. We hypothesized that forest fragments in Costa Rica would provide lower quality winter habitat as compared to continuous primary forest. We examined fragmentati ...
... (Hylocichla mustelina) breeding ecology, no studies to date have sought to understand how fragmentation affects Wood Thrush winter ecology. We hypothesized that forest fragments in Costa Rica would provide lower quality winter habitat as compared to continuous primary forest. We examined fragmentati ...
Slide 1
... related to maple density and inversely related to boxelder density. These relationships may reflect a more hospitable environment for buckthorn recruitment beneath maples than boxelders, or they may simply reflect a spurious relationship reflecting similar locations of seed sources for maple and buc ...
... related to maple density and inversely related to boxelder density. These relationships may reflect a more hospitable environment for buckthorn recruitment beneath maples than boxelders, or they may simply reflect a spurious relationship reflecting similar locations of seed sources for maple and buc ...
long-term effects of rodent herbivores on tree invasion dynamics
... Abstract. Despite many observations of herbivores and granivores influencing the survival of tree seeds and seedlings, the net effects of these consumers on plant succession remain unclear. We used both experimental herbivore manipulations and observations of changes in vegetation cover to evaluate ...
... Abstract. Despite many observations of herbivores and granivores influencing the survival of tree seeds and seedlings, the net effects of these consumers on plant succession remain unclear. We used both experimental herbivore manipulations and observations of changes in vegetation cover to evaluate ...
A Sensitive Ecosystem Guide - Salt Spring Island Conservancy
... Mature forest ecosystems are conifer-dominated dry to moist forest stands, usually 80 to 250 years old. Some stands may include deciduous tree species making up 25% of the canopy cover. Where are Mature Forest Ecosystems located? Mature forest ecosystems are often found in areas surrounding or borde ...
... Mature forest ecosystems are conifer-dominated dry to moist forest stands, usually 80 to 250 years old. Some stands may include deciduous tree species making up 25% of the canopy cover. Where are Mature Forest Ecosystems located? Mature forest ecosystems are often found in areas surrounding or borde ...
The low performance of forest versus rural coyotes in northeastern
... vulpes L.) through interference competition and/or intraguild predation (Harrison, Bissonette & Sherburne, 1989; Litvaitis & Harrison, 1989). Likely due to the landscape features where the species has evolved (Nowak, 1979), coyotes are well adapted to open and semiopen habitats (Young & Jackson, 195 ...
... vulpes L.) through interference competition and/or intraguild predation (Harrison, Bissonette & Sherburne, 1989; Litvaitis & Harrison, 1989). Likely due to the landscape features where the species has evolved (Nowak, 1979), coyotes are well adapted to open and semiopen habitats (Young & Jackson, 195 ...
Cascadia Wildlands
... Coos Bay BLM hopes to operate under this year, could log even more spotted owl habitat in the watershed. It could even turn reserves, such as riparian reserves and late successional reserves, into timber management areas. The no-action alternative must consider this reasonable foreseeable action whe ...
... Coos Bay BLM hopes to operate under this year, could log even more spotted owl habitat in the watershed. It could even turn reserves, such as riparian reserves and late successional reserves, into timber management areas. The no-action alternative must consider this reasonable foreseeable action whe ...
How human disturbance of tropical rainforest can influence avian
... on plants than altered pollination, because the relationships between species are not as tightly coupled in seed dispersal. Instead, plants usually rely on suites of vertebrates for dispersal (Wheelwright and Orians 1982, Levey et al. 1994), which may be why there is little evidence for the role of ...
... on plants than altered pollination, because the relationships between species are not as tightly coupled in seed dispersal. Instead, plants usually rely on suites of vertebrates for dispersal (Wheelwright and Orians 1982, Levey et al. 1994), which may be why there is little evidence for the role of ...
guidelines for urban forest restoration
... ongoing and ever-increasing pressures that come with climate change and urban population growth. Native urban forest does still exist, and can be protected, restored, and expanded through thoughtful and persistent management. While these forests will never be returned to their primeval state, signif ...
... ongoing and ever-increasing pressures that come with climate change and urban population growth. Native urban forest does still exist, and can be protected, restored, and expanded through thoughtful and persistent management. While these forests will never be returned to their primeval state, signif ...
Extinct owls-Clark and others (1978) list nine owl species that
... adversely affected by removal, modothers) ification, and fragmentation of their tropical forest habitats (Hume and Boyle1991). Mikkola (1983:311) reports that the Eagle-Owl has been persecuted heavily by humans and “may well fade from the European avifauna if they are not strictly protected.” In fac ...
... adversely affected by removal, modothers) ification, and fragmentation of their tropical forest habitats (Hume and Boyle1991). Mikkola (1983:311) reports that the Eagle-Owl has been persecuted heavily by humans and “may well fade from the European avifauna if they are not strictly protected.” In fac ...
Disturbance, Scale, and Boundary in Wilderness
... is that while all three areas have disturbance-dependent “fast” growing species, the number of such species and their absolute rates of growth vary with the physical environment. Similar comments could be made about other life history traits and the patterns of succession derived from them. We belie ...
... is that while all three areas have disturbance-dependent “fast” growing species, the number of such species and their absolute rates of growth vary with the physical environment. Similar comments could be made about other life history traits and the patterns of succession derived from them. We belie ...
The relative dominance hypothesis explains interaction dynamics in mixed species /
... negative effects through processes such as competition for resources (e.g. Ford 1975) and allelopathy (Williamson 1990). The predominant mode of interaction between trees in forest communities is, however, generally considered to be competition for resources (Oliver & Larson 1996). In many cases, ea ...
... negative effects through processes such as competition for resources (e.g. Ford 1975) and allelopathy (Williamson 1990). The predominant mode of interaction between trees in forest communities is, however, generally considered to be competition for resources (Oliver & Larson 1996). In many cases, ea ...
mangrove ecology
... the data supporting this viewpoint are not extensive. It is thought that large-scale disturbances such as hurricanes kill large areas of forest, which then regenerate at about the same time from seedlings or previously established juveniles. This view of even-aged structure in mangrove forests does ...
... the data supporting this viewpoint are not extensive. It is thought that large-scale disturbances such as hurricanes kill large areas of forest, which then regenerate at about the same time from seedlings or previously established juveniles. This view of even-aged structure in mangrove forests does ...
Biomes
... • A conifer is a tree that has seeds that develop in cones. – Their leaves’ arrow shape and waxy coating helps them to retain water in the winter. – shed snow to the ground and not get weighed down. – Conifer needles contains substances that make the soil acidic when they fall to the ground preventi ...
... • A conifer is a tree that has seeds that develop in cones. – Their leaves’ arrow shape and waxy coating helps them to retain water in the winter. – shed snow to the ground and not get weighed down. – Conifer needles contains substances that make the soil acidic when they fall to the ground preventi ...
Cross-scale Drivers of Natural Disturbances Prone to Anthropogenic
... cover releases herbs, shrubs, and grasses on the forest floor, and increased ratios of light-loving to shade-loving species may persist for more than 60 years. In mixed-species stands, the conversion to nonhost tree species (Veblen et al. 1991) represents an acceleration of normal successional traje ...
... cover releases herbs, shrubs, and grasses on the forest floor, and increased ratios of light-loving to shade-loving species may persist for more than 60 years. In mixed-species stands, the conversion to nonhost tree species (Veblen et al. 1991) represents an acceleration of normal successional traje ...
1 The northern pocket gopher (Thomomys talpoides) is a rodent
... vegetation, and can be considered keystone species in some systems due to their ability to dramatically alter both soil and vegetation structure (Cantor and Whitham 1989, Reichman and Seabloom 2002). Pocket gophers, like many rodents, have high population growth rates and are able to quickly coloniz ...
... vegetation, and can be considered keystone species in some systems due to their ability to dramatically alter both soil and vegetation structure (Cantor and Whitham 1989, Reichman and Seabloom 2002). Pocket gophers, like many rodents, have high population growth rates and are able to quickly coloniz ...
Effects of Tree Species Diversity on Foliar Fungal Distribution
... plot history and short time horizon (some ecosystem processes require more than a few decades to be realized (Jenkinson et al., 1990)), lack the complexity in stand and age structure, and have evenly spaced plants in small sized plots. In contrast, mature forests are in later stages of stand develop ...
... plot history and short time horizon (some ecosystem processes require more than a few decades to be realized (Jenkinson et al., 1990)), lack the complexity in stand and age structure, and have evenly spaced plants in small sized plots. In contrast, mature forests are in later stages of stand develop ...
The Distribution And Diversity Of Land Snails In Shimba Hills
... because no scientific study on snails has been done in this forest, therefore this study will increase malacological knowledge which will in turn necessitate proper management plan for both ecosystem and the terrestrial snails. Molluscs were sampled using standardized direct search and litter sample ...
... because no scientific study on snails has been done in this forest, therefore this study will increase malacological knowledge which will in turn necessitate proper management plan for both ecosystem and the terrestrial snails. Molluscs were sampled using standardized direct search and litter sample ...
Phenological diversity in tropical forests
... 1981; Borchert 1983; Reich and Borchert 1984) demonstrating existence of annual patterns of plant reproduction even in the tropics. Most neotropical forest communities studied show flowering and fruiting peaks near the end of the dry season (Janzen 1967; Croat 1975; Foster 1982; Frankie et al. 1974; ...
... 1981; Borchert 1983; Reich and Borchert 1984) demonstrating existence of annual patterns of plant reproduction even in the tropics. Most neotropical forest communities studied show flowering and fruiting peaks near the end of the dry season (Janzen 1967; Croat 1975; Foster 1982; Frankie et al. 1974; ...
2015 Vermont Forest Fragmentation Report
... Estate Taxes and Monetizing Ecosystem Services ......................................................................................... 49 Land-Use Planning Tools and Strategies ............................................................................................................ 49 Local Lan ...
... Estate Taxes and Monetizing Ecosystem Services ......................................................................................... 49 Land-Use Planning Tools and Strategies ............................................................................................................ 49 Local Lan ...
Effects of Forest Land Management on Terrestrial Mollusks: A
... deciduous trees and have higher abundances in multispecies forests with strong broadleaf components. Additionally, mollusks in deciduous forests appear to rebound from disturbance more quickly than in coniferous forests. ...
... deciduous trees and have higher abundances in multispecies forests with strong broadleaf components. Additionally, mollusks in deciduous forests appear to rebound from disturbance more quickly than in coniferous forests. ...
Effects of Forest Land Management on Terrestrial Mollusks
... deciduous trees and have higher abundances in multispecies forests with strong broadleaf components. Additionally, mollusks in deciduous forests appear to rebound from disturbance more quickly than in coniferous forests. ...
... deciduous trees and have higher abundances in multispecies forests with strong broadleaf components. Additionally, mollusks in deciduous forests appear to rebound from disturbance more quickly than in coniferous forests. ...
Wet eucalypt forest and woodland
... are included where the canopy is less than 50% solid crown cover. The wet eucalypt woodlands in many cases exist only in areas where many trees have died of old age and there has been no recruitment because of the absence of significant disturbance. Commonly these “woodlands” occur as emergent Eucal ...
... are included where the canopy is less than 50% solid crown cover. The wet eucalypt woodlands in many cases exist only in areas where many trees have died of old age and there has been no recruitment because of the absence of significant disturbance. Commonly these “woodlands” occur as emergent Eucal ...
Full text in pdf format
... each month from August 2007 to August 2008 for a total of 954.24 km walked during 239 walks. Sampling at San Juan was somewhat less intensive than sampling at Quinchas, as the region had extended periods of floods that prevented us from doing the surveys. Transects were walked from 06:00 to 10:00 h ...
... each month from August 2007 to August 2008 for a total of 954.24 km walked during 239 walks. Sampling at San Juan was somewhat less intensive than sampling at Quinchas, as the region had extended periods of floods that prevented us from doing the surveys. Transects were walked from 06:00 to 10:00 h ...
Environmental and geographic factors driving dung beetle
... they did not make a concerted effort to describe overall dung beetle diversity in Peninsular Malaysia. In an attempt to analyse changes in dung beetle communities in the small, disturbed patches of forest remaining in Singapore, Lee et al. (2009a) conducted a small study of dung beetle communities a ...
... they did not make a concerted effort to describe overall dung beetle diversity in Peninsular Malaysia. In an attempt to analyse changes in dung beetle communities in the small, disturbed patches of forest remaining in Singapore, Lee et al. (2009a) conducted a small study of dung beetle communities a ...
Old-growth forest
An old-growth forest (also termed primary forest, virgin forest, primeval forest, late seral forest, or in Britain, ancient woodland) is a forest that has attained great age without significant disturbance and thereby exhibits unique ecological features and might be classified as a climax community. Old-growth features include diverse tree-related structures that provide diverse wildlife habitat that increases the bio-diversity of the forested ecosystem. The concept of diverse tree structure includes multi-layered canopies and canopy gaps, greatly varying tree heights and diameters, and diverse tree species and classes and sizes of woody debris.Old-growth forests are economically valuable, and logging of these forests has been a point of contention between the logging industry and environmentalists.