The Ecological Role of the Mammalian Mesocarnivore
... just two or three packs (McLaren and Peterson 1994). Thus, it is clear that a relatively small number of large carnivores can directly or indirectly influence multiple trophic levels and precipitate community-level cascades that increase the abundance of primary producers, ultimately modifying habit ...
... just two or three packs (McLaren and Peterson 1994). Thus, it is clear that a relatively small number of large carnivores can directly or indirectly influence multiple trophic levels and precipitate community-level cascades that increase the abundance of primary producers, ultimately modifying habit ...
Biotropica
... which serves as habitat and as the foundation of the food web supplying ants with prey. Because the biomass of litter can only account for a fraction of the variance in ant densities, we may expect additional variation to be explained by resource stoichiometry. We are only starting to describe regio ...
... which serves as habitat and as the foundation of the food web supplying ants with prey. Because the biomass of litter can only account for a fraction of the variance in ant densities, we may expect additional variation to be explained by resource stoichiometry. We are only starting to describe regio ...
Distribution/abundance relations in a New Zealand grassland
... Abstract: There are many examples in the literature of a positive correlation between the distribution of a species and its local abundance, i.e., widely occurring species tend to be more abundant locally when they do occur. Such relations have been documented over a wide range of taxa and spatial s ...
... Abstract: There are many examples in the literature of a positive correlation between the distribution of a species and its local abundance, i.e., widely occurring species tend to be more abundant locally when they do occur. Such relations have been documented over a wide range of taxa and spatial s ...
Ecology of Native and Exotic Anolis lizards in Southern Florida.
... days. The result of our two-way ANOVA indicates that there were not significantly different counts recorded across the two weather conditions (Table 3). DISCUSSION From 2005 to 2006, our study results are inconclusive with regard to changes in the populations of A. carolinensis. We did observe signi ...
... days. The result of our two-way ANOVA indicates that there were not significantly different counts recorded across the two weather conditions (Table 3). DISCUSSION From 2005 to 2006, our study results are inconclusive with regard to changes in the populations of A. carolinensis. We did observe signi ...
Planning for Connectivity
... connectivity is the most frequently recommended strategy for allowing biodiversity to adapt to new conditions (Heller and Zaveleta 2009). Wildlife species are becoming increasingly isolated in patches of habitat surrounded by a human-dominated landscape. Exacerbating this fragmentation is the effect ...
... connectivity is the most frequently recommended strategy for allowing biodiversity to adapt to new conditions (Heller and Zaveleta 2009). Wildlife species are becoming increasingly isolated in patches of habitat surrounded by a human-dominated landscape. Exacerbating this fragmentation is the effect ...
why the world is green, the waters are blue and food webs in small
... there apparently has not been such a standardization, and we are open to using ‘riacho’, ‘córrego’, ‘arroio’, ‘igarapé’, ‘aimbim’ as the appendage to ‘ecologia’ to describe the this branch of study). The most used and cited model of how streams and rivers function ecologically is the River Continuum ...
... there apparently has not been such a standardization, and we are open to using ‘riacho’, ‘córrego’, ‘arroio’, ‘igarapé’, ‘aimbim’ as the appendage to ‘ecologia’ to describe the this branch of study). The most used and cited model of how streams and rivers function ecologically is the River Continuum ...
Chapter 12 Breeding Bird Communities
... have declined in population (Sauer et al. 1997). The reasons for the declines are unclear, but possible explanations include loss of habitat, changes in habitat conditions, and increased fragmentation of remaining habitat (Finch 1991; Rappole and DeGraaf 1996). These changes underscore the need to m ...
... have declined in population (Sauer et al. 1997). The reasons for the declines are unclear, but possible explanations include loss of habitat, changes in habitat conditions, and increased fragmentation of remaining habitat (Finch 1991; Rappole and DeGraaf 1996). These changes underscore the need to m ...
Translocation as a Conservation Measure for an
... were not seen again afterwards. Another female with an infant was killed by a villager in January 2001. This incident took place at the southern end of M16 where the conservation zone borders the village of Ampasy. It is possible that the lemur group had ventured into the village fruit trees. The in ...
... were not seen again afterwards. Another female with an infant was killed by a villager in January 2001. This incident took place at the southern end of M16 where the conservation zone borders the village of Ampasy. It is possible that the lemur group had ventured into the village fruit trees. The in ...
The TKMG Tree-kangaroo Fact-File - The Tree
... live amongst the adults. In regard to their respective adult samesex peers, both sexes maintain exclusive home ranges (a bit less than 1ha for females and about 2ha for males). However, the male home range overlaps with those of all females of the harem. Being intolerant of individuals of the same s ...
... live amongst the adults. In regard to their respective adult samesex peers, both sexes maintain exclusive home ranges (a bit less than 1ha for females and about 2ha for males). However, the male home range overlaps with those of all females of the harem. Being intolerant of individuals of the same s ...
Herbivore diet breadth mediates the cascading effects of carnivores
... evolutionary, community, and food web ecology through the prediction that plants with herbivore communities dominated by dietary specialists will experience weak trophic cascades, compared ...
... evolutionary, community, and food web ecology through the prediction that plants with herbivore communities dominated by dietary specialists will experience weak trophic cascades, compared ...
Facilitation and competition in the high Arctic: the importance of the
... different growth forms. Luzula has a significant facilitative effect on Salix whilst the reverse is not true. As Luzula is a taller species, amelioration of the physical environment (wind stress, evaporation Brooker and Callaghan, 1998) is a possible candidate of the facilitative mechanism. Temperat ...
... different growth forms. Luzula has a significant facilitative effect on Salix whilst the reverse is not true. As Luzula is a taller species, amelioration of the physical environment (wind stress, evaporation Brooker and Callaghan, 1998) is a possible candidate of the facilitative mechanism. Temperat ...
The impact of floral larceny on individuals, populations, and
... gitimate pollinators (Roubik 1982), are easy to envision. Conversely, some nectar robbers actually have a direct positive effect by pollinating at least a fraction of the flowers they rob (citations in Maloof and Inouye 2000). Pollination in such cases ranges from occasional and accidental at one ex ...
... gitimate pollinators (Roubik 1982), are easy to envision. Conversely, some nectar robbers actually have a direct positive effect by pollinating at least a fraction of the flowers they rob (citations in Maloof and Inouye 2000). Pollination in such cases ranges from occasional and accidental at one ex ...
early primary succession on mount st. helens: impact of insect
... Twelve patches (3 core, 9 edge) were selected for demographic study in 1991, and 7 additional patches (1 core, 6 edge) were selected in 1992. Core patches, founded 1981–1984, include the original colonizing patch and several high-density satellites. Edge patches are widely spaced secondary or tertia ...
... Twelve patches (3 core, 9 edge) were selected for demographic study in 1991, and 7 additional patches (1 core, 6 edge) were selected in 1992. Core patches, founded 1981–1984, include the original colonizing patch and several high-density satellites. Edge patches are widely spaced secondary or tertia ...
section 4: environmental inventory and analysis
... throughout the region where the large blocks of forested habitat have been fragmented by suburban development, there are still relatively large, un-fragmented tracts of forestland. While it is true that edges (where two different habitat types meet) attract a diversity of species, many species requi ...
... throughout the region where the large blocks of forested habitat have been fragmented by suburban development, there are still relatively large, un-fragmented tracts of forestland. While it is true that edges (where two different habitat types meet) attract a diversity of species, many species requi ...
POPULATION DENSITY AND DISTRIBUTION OF THE NEW
... native bush remnant has 4 other megascolecid species (as yet unidentified), only one of which has been found at low densities in pastures, but even the total numbers of Megascolecidae in the native bush site are less than that of Octochaetus multiporus in the pasture sites. This suggests that Octoch ...
... native bush remnant has 4 other megascolecid species (as yet unidentified), only one of which has been found at low densities in pastures, but even the total numbers of Megascolecidae in the native bush site are less than that of Octochaetus multiporus in the pasture sites. This suggests that Octoch ...
Effects of Forest Land Management on Terrestrial Mollusks: A
... management actions. Under Forest Service policy, agency botanists and biologists complete a Biological Evaluation in which programs and activities are reviewed to determine their potential effects on Sensitive species. Proposed management actions “must not result in a loss of species viability or cr ...
... management actions. Under Forest Service policy, agency botanists and biologists complete a Biological Evaluation in which programs and activities are reviewed to determine their potential effects on Sensitive species. Proposed management actions “must not result in a loss of species viability or cr ...
sampling design - Herbivory Network
... a common habitat type, sampling plants of the most abundant species within each site (small scale variation; Figure 1). Study areas are loosely defined here at a scale of hundreds of meters to a few kilometers (i.e. areas separated more than 5 km apart would be considered different study areas); stu ...
... a common habitat type, sampling plants of the most abundant species within each site (small scale variation; Figure 1). Study areas are loosely defined here at a scale of hundreds of meters to a few kilometers (i.e. areas separated more than 5 km apart would be considered different study areas); stu ...
RESOURCE RESILIENCE, HUMAN NICHE CONSTRUCTION, AND
... impact on wild animal populations simply in terms of low predation pressure, it is worthwhile to consider the extent to which a number of the primary prey species they relied upon may have been resilient under human predation. The term ‘‘reslience’’ as used here refers to the capacity of the species ...
... impact on wild animal populations simply in terms of low predation pressure, it is worthwhile to consider the extent to which a number of the primary prey species they relied upon may have been resilient under human predation. The term ‘‘reslience’’ as used here refers to the capacity of the species ...
Effects of Forest Land Management on Terrestrial Mollusks
... management actions. Under Forest Service policy, agency botanists and biologists complete a Biological Evaluation in which programs and activities are reviewed to determine their potential effects on Sensitive species. Proposed management actions “must not result in a loss of species viability or cr ...
... management actions. Under Forest Service policy, agency botanists and biologists complete a Biological Evaluation in which programs and activities are reviewed to determine their potential effects on Sensitive species. Proposed management actions “must not result in a loss of species viability or cr ...
Regime Shifts in the Anthropocene: drivers, risk
... Summary. Kelp forests are marine coastal ecosystems located in shallow areas where large macroalgae ecologically engineer the environment to produce a coastal marine environmental substantially different from the same area without kelp. Kelp forests can undergo a regime shift to turf-forming algae o ...
... Summary. Kelp forests are marine coastal ecosystems located in shallow areas where large macroalgae ecologically engineer the environment to produce a coastal marine environmental substantially different from the same area without kelp. Kelp forests can undergo a regime shift to turf-forming algae o ...
Do Habitat Conservation Plans Deserve Wider Implementation?
... There are now more than 700 HCPs nationwide, with additional plans in preparation. While a number of HCPs have been based on a more conventional model of bilateral, single-project permits that merely seek to mitigate harm to listed species, the more noteworthy HCPs are landscape-wide and focused on ...
... There are now more than 700 HCPs nationwide, with additional plans in preparation. While a number of HCPs have been based on a more conventional model of bilateral, single-project permits that merely seek to mitigate harm to listed species, the more noteworthy HCPs are landscape-wide and focused on ...
Towards a food web perspective on biodiversity and ecosystem
... their abundance or biomass. Duffy’s (2002) paper was one of the first to call for a merger of BEF and food-web theory, and the hypotheses put forth in that paper were useful, in part, because they represented an alternative to those posed by a number of other authors. For example, some have argued th ...
... their abundance or biomass. Duffy’s (2002) paper was one of the first to call for a merger of BEF and food-web theory, and the hypotheses put forth in that paper were useful, in part, because they represented an alternative to those posed by a number of other authors. For example, some have argued th ...
Appendix K Soil biota - Defra Science Search
... The structure and processes of terrestrial ecosystems are profoundly dependant upon a functioning soil biota. The biota is responsible for processing carbon, nutrient cycling, structural genesis and maintenance, pathogenicity and symbionts. It drives many above ground processes. However, in the majo ...
... The structure and processes of terrestrial ecosystems are profoundly dependant upon a functioning soil biota. The biota is responsible for processing carbon, nutrient cycling, structural genesis and maintenance, pathogenicity and symbionts. It drives many above ground processes. However, in the majo ...
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.