Elf owl
... Elf owls evidently have a low potential intrinsic rate of population growth and thus are vulnerable to ecological factors affecting population size, such as predation and competition. As noted above, the typical clutch is 2.6 eggs. Hatching success is approximately 95% (Ligon 1968) but fledging succ ...
... Elf owls evidently have a low potential intrinsic rate of population growth and thus are vulnerable to ecological factors affecting population size, such as predation and competition. As noted above, the typical clutch is 2.6 eggs. Hatching success is approximately 95% (Ligon 1968) but fledging succ ...
Non-Additive Effects of Genotypic Diversity Increase Floral
... microbial communities and ecosystem level processes such as productivity and nutrient cycles [see reviews by – 1,13–15]. For example, genotypic differences in Populus can account for up to 70% of the variation in microbial community composition [16]. Fourth, the effects of genotypic diversity and st ...
... microbial communities and ecosystem level processes such as productivity and nutrient cycles [see reviews by – 1,13–15]. For example, genotypic differences in Populus can account for up to 70% of the variation in microbial community composition [16]. Fourth, the effects of genotypic diversity and st ...
pers. comm.).
... tion of both red-legged frogs and bulIfrogs. When fully hatching success regardless of ultraviolet racilation levels. Little &rect information on the remaining reasons hydrated, the marsh is about 20;ha in size but by fall it is for decline is available. dry. By mid-October of 1996, the wetted area ...
... tion of both red-legged frogs and bulIfrogs. When fully hatching success regardless of ultraviolet racilation levels. Little &rect information on the remaining reasons hydrated, the marsh is about 20;ha in size but by fall it is for decline is available. dry. By mid-October of 1996, the wetted area ...
5. Seychelles - Food and Agriculture Organization of the United
... Seychelles consists of a scattered group of 115 granitic and coralline islands in the Western Indian Ocean with a total land area of 438 km2 (Stoddart 1984a). The granitic islands cover 53 percent of the total land area (INDUFOR 1993) and include Mahé, Praslin, Silhouette and La Digue. Mahé is the l ...
... Seychelles consists of a scattered group of 115 granitic and coralline islands in the Western Indian Ocean with a total land area of 438 km2 (Stoddart 1984a). The granitic islands cover 53 percent of the total land area (INDUFOR 1993) and include Mahé, Praslin, Silhouette and La Digue. Mahé is the l ...
Etowah River Basin Stressors Analysis - Web8
... The Etowah River Basin (Figure 1-1) is a highly biodiverse and highly imperiled aquatic ecosystem located just north of Atlanta, Georgia. Its precarious status and diversity of fauna have made it an object of scientific research for the last several decades. In recent years it has also become the fo ...
... The Etowah River Basin (Figure 1-1) is a highly biodiverse and highly imperiled aquatic ecosystem located just north of Atlanta, Georgia. Its precarious status and diversity of fauna have made it an object of scientific research for the last several decades. In recent years it has also become the fo ...
Ontogenetic variation in the diurnal food and habitat
... its interactions with endemic species (Fletcher 1986). Where they have been introduced outside their natural range, mosquitofish have been confirmed as a cause of declines and losses of some North American endemic fishes (Meffe et al. 1983, Meffe 1984). In Australian systems, we know they may compet ...
... its interactions with endemic species (Fletcher 1986). Where they have been introduced outside their natural range, mosquitofish have been confirmed as a cause of declines and losses of some North American endemic fishes (Meffe et al. 1983, Meffe 1984). In Australian systems, we know they may compet ...
Managing Wetland Habitats for Waterbirds: An International
... greatest density of waterbirds in areas where diving birds are dominant (Stapanian 2003), and where the wetlands provide roosting sites for waterfowl (Hattori and Mae 2001). From a management perspective, the overlapping of water depth requirements among waterbird groups suggests that wetlands can b ...
... greatest density of waterbirds in areas where diving birds are dominant (Stapanian 2003), and where the wetlands provide roosting sites for waterfowl (Hattori and Mae 2001). From a management perspective, the overlapping of water depth requirements among waterbird groups suggests that wetlands can b ...
temperate lake ecosystems Synchronous dynamics of zooplankton
... communities [1,2] and of the processes structuring community composition [3–5]. Synchrony and its alternative pattern, compensation (or compensatory dynamics), are mutually exclusive phenomenological features of community dynamics that can arise from many underlying mechanisms [6,7]. Compensation ma ...
... communities [1,2] and of the processes structuring community composition [3–5]. Synchrony and its alternative pattern, compensation (or compensatory dynamics), are mutually exclusive phenomenological features of community dynamics that can arise from many underlying mechanisms [6,7]. Compensation ma ...
Captive Propagation of the Threatened Eastern
... purpose of the program was to supplement existing populations in the Southeast that were low in eastern indigo snake numbers or restock areas that experienced extirpation. Adult snakes used for captive breeding were obtained from zoos, U.S. Fish and Wildlife Service confiscations, and by wild captur ...
... purpose of the program was to supplement existing populations in the Southeast that were low in eastern indigo snake numbers or restock areas that experienced extirpation. Adult snakes used for captive breeding were obtained from zoos, U.S. Fish and Wildlife Service confiscations, and by wild captur ...
Axis porcinus, Hog Deer
... List status of Hog Deer in 2008 convincingly showed that the species had been undergoing a serious and overlooked global decline for decades. Those authors provided the following justification which, with few caveats, is considered to still hold true for the 2014 assessment: it is considered Endange ...
... List status of Hog Deer in 2008 convincingly showed that the species had been undergoing a serious and overlooked global decline for decades. Those authors provided the following justification which, with few caveats, is considered to still hold true for the 2014 assessment: it is considered Endange ...
PETITION TO LIST THE Narrow-foot Hygrotus Diving Beetle
... In fact, livestock grazing is directly responsible for the destruction of Diving Beetle habitat. Dr. Miller, in his 2002 survey of the Diving Beetle in Wyoming, reported that the Diving Beetle was previously found in locations that are now “exceptionally disturbed by . . . cattle grazing.” Miller 20 ...
... In fact, livestock grazing is directly responsible for the destruction of Diving Beetle habitat. Dr. Miller, in his 2002 survey of the Diving Beetle in Wyoming, reported that the Diving Beetle was previously found in locations that are now “exceptionally disturbed by . . . cattle grazing.” Miller 20 ...
The Science of Ecology for a Sustainable World
... The recognition that populations interact led to investigation of aggregates of populations, and their structure and dynamics as related to physico-chemical conditions. Edward Forbes (UK, 1815–1854) was the first to investigate the distribution of marine organisms at various depths in the sea. He de ...
... The recognition that populations interact led to investigation of aggregates of populations, and their structure and dynamics as related to physico-chemical conditions. Edward Forbes (UK, 1815–1854) was the first to investigate the distribution of marine organisms at various depths in the sea. He de ...
Gucinski, H., M.J. Furniss, R.R. Ziemer, M.H. Brookes
... needed, for how long, for what purposes, and at what benefits and costs to the agency and society. Road effects and uses may be somewhat arbitrarily divided into beneficial and detrimental. The largest group of beneficial variables relates to access. We identified access-related benefits as harvest ...
... needed, for how long, for what purposes, and at what benefits and costs to the agency and society. Road effects and uses may be somewhat arbitrarily divided into beneficial and detrimental. The largest group of beneficial variables relates to access. We identified access-related benefits as harvest ...
Changes of diet and dominant intestinal microbes in farmland frogs
... establish a selective environment to prevent emerging pathogens from building up a necessary population size to cause disease. The native microbes can prevent other similar taxa for colonization by high density blocking, and this effect is like the “founder-takes-all” effect of the field of populati ...
... establish a selective environment to prevent emerging pathogens from building up a necessary population size to cause disease. The native microbes can prevent other similar taxa for colonization by high density blocking, and this effect is like the “founder-takes-all” effect of the field of populati ...
Environmental responses, not species interactions
... whether synchrony is driven by species-specific responses to environmental conditions or interspecific competition (Hautier et al. 2014). If responses to environment are important, then environmental change could alter synchrony and stability. If competition is important, then the direct effects of ...
... whether synchrony is driven by species-specific responses to environmental conditions or interspecific competition (Hautier et al. 2014). If responses to environment are important, then environmental change could alter synchrony and stability. If competition is important, then the direct effects of ...
File
... Manitoba applications: “River flow alteration caused by dams…has impeded the spawning, recruitment and migration of native fish and created habitats in which carp survive well” Restoration of natural features has greater results than traditional removal attempts Population dynamics = DENSITY DEPENDE ...
... Manitoba applications: “River flow alteration caused by dams…has impeded the spawning, recruitment and migration of native fish and created habitats in which carp survive well” Restoration of natural features has greater results than traditional removal attempts Population dynamics = DENSITY DEPENDE ...
this PDF file - Journal of Tropical Life Science
... Java, identify the roots of conservation problems and propose the non-consumptive and sustainable uses of Banteng by implementing ecotourism. Recently, Banteng population distributes in Alas Purwo, Meru Betiri, and Balu ran National Parks. The population in Alas Purwo and Meru Betiri were relatively ...
... Java, identify the roots of conservation problems and propose the non-consumptive and sustainable uses of Banteng by implementing ecotourism. Recently, Banteng population distributes in Alas Purwo, Meru Betiri, and Balu ran National Parks. The population in Alas Purwo and Meru Betiri were relatively ...
Sage Grouse Habitat Requirements
... seasonal basis. Most of their preferred habitat is found in low rolling hills and adjacent valleys. Optional habitat is a diverse mosaic of sagebrushgrass with varying heights of sagebrush and a diverse understory of perennial grasses and forbs (broadleaf herbaceous plants). The proportion of sagebr ...
... seasonal basis. Most of their preferred habitat is found in low rolling hills and adjacent valleys. Optional habitat is a diverse mosaic of sagebrushgrass with varying heights of sagebrush and a diverse understory of perennial grasses and forbs (broadleaf herbaceous plants). The proportion of sagebr ...
Soil community composition and ecosystem processes D. A. NEHER
... or rare, soil communities will approach equilibrium and be dominated by a few taxa that can out-compete all other taxa. However, attainment of steadystate equilibrium in agricultural or natural ecosystems is rare (Richards, 1987). There is little data to support this hypothesis but temporal patterns ...
... or rare, soil communities will approach equilibrium and be dominated by a few taxa that can out-compete all other taxa. However, attainment of steadystate equilibrium in agricultural or natural ecosystems is rare (Richards, 1987). There is little data to support this hypothesis but temporal patterns ...
Bern Convention activities in the field of large carnivore conservation
... avoid duplication of effort and make the most efficient use of the available resources. The LCIE is an advisory, international and interdisciplinary board consisted on scientists, researchers, conservation and law specialists from all over Europe, made up of among the best available expertise in its ...
... avoid duplication of effort and make the most efficient use of the available resources. The LCIE is an advisory, international and interdisciplinary board consisted on scientists, researchers, conservation and law specialists from all over Europe, made up of among the best available expertise in its ...
"SPOTTED HYENAS: MISUNDERSTOOD INDICATORS OFF
... ecosystems, such as boreal forests, but none have yet been suggested for African ecosystems. An indicator species must be relatively easy to monitor and it must also be sensitive to environmental disturbances at many trophic (foodweb) levels simultaneously. Spotted hyenas satisfy these conditions, a ...
... ecosystems, such as boreal forests, but none have yet been suggested for African ecosystems. An indicator species must be relatively easy to monitor and it must also be sensitive to environmental disturbances at many trophic (foodweb) levels simultaneously. Spotted hyenas satisfy these conditions, a ...
- D-Scholarship@Pitt
... significantly different soil microbial communities, which altered plant performance, changed the intensity of interspecific competition and reversed whether plant species were limited by conspecifics or heterospecifics. Although this mosaic of shifting competitive abilities due to soil feedbacks is ...
... significantly different soil microbial communities, which altered plant performance, changed the intensity of interspecific competition and reversed whether plant species were limited by conspecifics or heterospecifics. Although this mosaic of shifting competitive abilities due to soil feedbacks is ...
Allelopathic Affects of Briareum asbestinum and Gorgonia sp. on the
... behavior of other species. The Alcyonacean octocorals of the Indo-Pacific, known to be allelopathic, affect other octocorals (La Barre, Coll, & Sammarco, 1986) and scleractinians when competing for space (Maida, Sammarco, & Coll, 1995, 2001). The Gorgonacea of the Caribbean produce similar secondary ...
... behavior of other species. The Alcyonacean octocorals of the Indo-Pacific, known to be allelopathic, affect other octocorals (La Barre, Coll, & Sammarco, 1986) and scleractinians when competing for space (Maida, Sammarco, & Coll, 1995, 2001). The Gorgonacea of the Caribbean produce similar secondary ...
Hydrilla - Alaska Center for Conservation Science
... Canadian waterweed can be distinguished from hydrilla by the presence of leaves that are arranged in whorls of three (DiTomaso and Healy 2003). Ecological Impact Impact on community composition, structure, and interactions: Hydrilla can form dense mats near the water surface, intercepting sunlight a ...
... Canadian waterweed can be distinguished from hydrilla by the presence of leaves that are arranged in whorls of three (DiTomaso and Healy 2003). Ecological Impact Impact on community composition, structure, and interactions: Hydrilla can form dense mats near the water surface, intercepting sunlight a ...
Eco-evolutionary feedbacks in community and ecosystem ecology
... Interactions between natural selection and environmental change are well recognized and sit at the core of ecology and evolutionary biology. Reciprocal interactions between ecology and evolution, eco-evolutionary feedbacks, are less well studied, even though they may be critical for understanding th ...
... Interactions between natural selection and environmental change are well recognized and sit at the core of ecology and evolutionary biology. Reciprocal interactions between ecology and evolution, eco-evolutionary feedbacks, are less well studied, even though they may be critical for understanding th ...
Biological Dynamics of Forest Fragments Project
The Biological Dynamics of Forest Fragments Project, originally called the Minimum Critical Size of Ecosystems Project is a large-scale ecological experiment looking at the effects of habitat fragmentation on tropical rainforest; it is one of the most expensive biology experiments ever run. The experiment, which was established in 1979 is located near Manaus, in the Brazilian Amazon. The project is jointly managed by the Smithsonian Institution and INPA, the Brazilian Institute for Research in the Amazon.The project was initiated in 1979 by Thomas Lovejoy to investigate the SLOSS debate. Initially named the Minimum Critical Size of Ecosystems Project, the project created forest fragments of sizes 1 hectare (2 acres), 10 hectares (25 acres), and 100 hectares (247 acres). Data were collected prior to the creation of the fragments and studies of the effects of fragmentation now exceed 25 years.As of October 2010 562 publications and 143 graduate dissertations and theses had emerged from the project.