Understanding what controls the spatial distribution of fish
... energy or mortality risk. In the ideal free distribution world, individuals distribute themselves in habitats of varying quality in such way that the resulting suitability (often expressed as individual ...
... energy or mortality risk. In the ideal free distribution world, individuals distribute themselves in habitats of varying quality in such way that the resulting suitability (often expressed as individual ...
Intertidal and Nearshore Rocky Reefs
... in mesoscale factors such as large current systems and largescale temperature regimes may explain disparities at a biogeographical level (Bustamante and Branch 1996). However, a suite of site-specific factors determine patterns of species distributions in the local setting. Environmental stress rela ...
... in mesoscale factors such as large current systems and largescale temperature regimes may explain disparities at a biogeographical level (Bustamante and Branch 1996). However, a suite of site-specific factors determine patterns of species distributions in the local setting. Environmental stress rela ...
Habitat selection, reproduction and predation of wintering
... the formation of ice at ground level, which prevents rodents from feeding on the vegetation (Korslund and Steen 2006; Coulson and Malo 2008). Small mammals require a high rate of food intake because of their low digestive efficiency and high metabolic rate increased by cold conditions (Barkley et al ...
... the formation of ice at ground level, which prevents rodents from feeding on the vegetation (Korslund and Steen 2006; Coulson and Malo 2008). Small mammals require a high rate of food intake because of their low digestive efficiency and high metabolic rate increased by cold conditions (Barkley et al ...
Diverse habitat use during two life stages of the critically
... grounds in human-altered habitat for different habitats nearby that provide increased foraging opportunities, reduced competition, and higher protection from predators. In this study, we sought to better understand the importance of habitat diversity to two life stages of the critically endangered B ...
... grounds in human-altered habitat for different habitats nearby that provide increased foraging opportunities, reduced competition, and higher protection from predators. In this study, we sought to better understand the importance of habitat diversity to two life stages of the critically endangered B ...
The Relative Importance of Abiotic and Biotic Factors for Seedling
... Given these results, seed germination is not strongly regulated by abiotic or biotic factors; however, shrub canopies may be important for seedling growth and survival. If seedling persistence responds to nitrogen resources, A. dumosa may be instrumental in facilitating the establishment of perennia ...
... Given these results, seed germination is not strongly regulated by abiotic or biotic factors; however, shrub canopies may be important for seedling growth and survival. If seedling persistence responds to nitrogen resources, A. dumosa may be instrumental in facilitating the establishment of perennia ...
Daphnia as keystone predators - Orlando Sarnelle
... changes in the controls, which were typically less than 25%. Mortality rates were standardized by expressing each species’ mortality as a proportion of the highest mortality rate in the data set (Vanderploeg and Scavia, 1979). One species, Oocystis sp., tended to increase in controls, so mortality ...
... changes in the controls, which were typically less than 25%. Mortality rates were standardized by expressing each species’ mortality as a proportion of the highest mortality rate in the data set (Vanderploeg and Scavia, 1979). One species, Oocystis sp., tended to increase in controls, so mortality ...
Author`s personal copy
... Palaearctic grasslands are known for their high biodiversity in many taxa. For example, at small spatial scales vascular plant diversity of certain European grasslands even exceeds tropical rainforests (Wilson et al., 2012), which are normally considered the most diverse ecosystems on earth. A high ...
... Palaearctic grasslands are known for their high biodiversity in many taxa. For example, at small spatial scales vascular plant diversity of certain European grasslands even exceeds tropical rainforests (Wilson et al., 2012), which are normally considered the most diverse ecosystems on earth. A high ...
Wolverine - Saskatchewan Conservation Data Centre
... successful age classes of females at raising kits to weaning are unknown factors. This evidence suggests that trapped populations would decline without immigration from refugia from trapping (Krebs et al. ...
... successful age classes of females at raising kits to weaning are unknown factors. This evidence suggests that trapped populations would decline without immigration from refugia from trapping (Krebs et al. ...
The habitat condition data dictionary
... Limiting factor lists mix ecological processes operating over a wide variety of spatial and temporal scales ...
... Limiting factor lists mix ecological processes operating over a wide variety of spatial and temporal scales ...
Environmental and spatial drivers of taxonomic, functional
... mean location (hereafter composition) and dispersion. Composition characterizes the central position of a community within functional or phylogenetic space based on the averages of species characteristics (Fig. 2A), and is conceptually similar to community-weighted means (Peres-Neto, Leibold & Dray, ...
... mean location (hereafter composition) and dispersion. Composition characterizes the central position of a community within functional or phylogenetic space based on the averages of species characteristics (Fig. 2A), and is conceptually similar to community-weighted means (Peres-Neto, Leibold & Dray, ...
Global biodiversity patterns of marine phytoplankton and zooplankton
... diversity (Fig. 1c). Zooplankton diversity is obviously higher when mesozooplankton are included as well. With inclusion of mesozooplankton, however, we observed the same lack of relation between phytoplankton diversity and zooplankton diversity (Fig. 1d). That is, marine pelagic environments with a ...
... diversity (Fig. 1c). Zooplankton diversity is obviously higher when mesozooplankton are included as well. With inclusion of mesozooplankton, however, we observed the same lack of relation between phytoplankton diversity and zooplankton diversity (Fig. 1d). That is, marine pelagic environments with a ...
Predator interactions, mesopredator release and biodiversity
... commercial industries such as fisheries (Baum & Worm 2009) and threatening vulnerable prey species (Polis & Holt 1992). Mesopredator outbreaks have the potential to lead to extinction of some prey, especially those that are susceptible because they have low population growth rates or live in situati ...
... commercial industries such as fisheries (Baum & Worm 2009) and threatening vulnerable prey species (Polis & Holt 1992). Mesopredator outbreaks have the potential to lead to extinction of some prey, especially those that are susceptible because they have low population growth rates or live in situati ...
A Review of Alberta`s Draft Recovery Plan for Woodland Caribou
... ? That range plans will be “implemented using existing ... company planning and approval systems” (p.16). This is a rather nebulous statement, but it carries the insidious suggestion that caribou recovery plans will be implemented only once industrial approval is granted. ? While adaptive management ...
... ? That range plans will be “implemented using existing ... company planning and approval systems” (p.16). This is a rather nebulous statement, but it carries the insidious suggestion that caribou recovery plans will be implemented only once industrial approval is granted. ? While adaptive management ...
Predator interactions, mesopredator release and biodiversity
... commercial industries such as fisheries (Baum & Worm 2009) and threatening vulnerable prey species (Polis & Holt 1992). Mesopredator outbreaks have the potential to lead to extinction of some prey, especially those that are susceptible because they have low population growth rates or live in situati ...
... commercial industries such as fisheries (Baum & Worm 2009) and threatening vulnerable prey species (Polis & Holt 1992). Mesopredator outbreaks have the potential to lead to extinction of some prey, especially those that are susceptible because they have low population growth rates or live in situati ...
Large-scale spatial dynamics of vole populations in Finland
... relationships between the owl species and the roughlegged buzzard could not be investigated, as these species did not occur in sufficient numbers in the same squares. However, previous studies have shown that the rough-legged buzzard is a vole specialist and its breeding performance is greatly depen ...
... relationships between the owl species and the roughlegged buzzard could not be investigated, as these species did not occur in sufficient numbers in the same squares. However, previous studies have shown that the rough-legged buzzard is a vole specialist and its breeding performance is greatly depen ...
Early post-settlement mortality and the structure of coral assemblages
... 2007). All the colonies at least partially enclosed in the belt transects were counted and identified to the genus level. Because juveniles are at least 1 yr old, sampling was initiated 1 yr after the first recruitment sampling. Transects were parallel to the depth contour and separated by > 2 m. Sp ...
... 2007). All the colonies at least partially enclosed in the belt transects were counted and identified to the genus level. Because juveniles are at least 1 yr old, sampling was initiated 1 yr after the first recruitment sampling. Transects were parallel to the depth contour and separated by > 2 m. Sp ...
Guideline on Pest Risk Analysis - GB non
... Risk assessments consider only the risks posed by a species. They do not consider the practicalities, impacts or other issues relating to the management of the species. They therefore cannot on their own be used to determine what, if any, management response should be undertaken. Risk assessments ar ...
... Risk assessments consider only the risks posed by a species. They do not consider the practicalities, impacts or other issues relating to the management of the species. They therefore cannot on their own be used to determine what, if any, management response should be undertaken. Risk assessments ar ...
Prey preferences of the lion (Panthera leo)
... and of all preferred species is 201 kg. Gemsbok, buffalo, wildebeest, giraffe and zebra are significantly preferred. Species outside the preferred weight range are generally avoided. Species within the preferred weight range that are not significantly preferred (such as roan, sable and eland) genera ...
... and of all preferred species is 201 kg. Gemsbok, buffalo, wildebeest, giraffe and zebra are significantly preferred. Species outside the preferred weight range are generally avoided. Species within the preferred weight range that are not significantly preferred (such as roan, sable and eland) genera ...
Collection of Bait Organisms in Estuaries
... both these methods, sediment core disturbance is minimal when compared to the amount of sediment turnover using a spade or long blade. However, it is important to distinguish between the number of bait organisms removed and the longer term effects on the target species, associated benthic communitie ...
... both these methods, sediment core disturbance is minimal when compared to the amount of sediment turnover using a spade or long blade. However, it is important to distinguish between the number of bait organisms removed and the longer term effects on the target species, associated benthic communitie ...
- D-Scholarship@Pitt
... predicted to be the key drivers of plant community dynamics and resulting structure. Tilman (1988, 1990) has argued that species-specific allocation tradeoffs should correlate with hierarchies of competitive ability, relative abundance, and coexistence in plant communities. We examined 6 classic and ...
... predicted to be the key drivers of plant community dynamics and resulting structure. Tilman (1988, 1990) has argued that species-specific allocation tradeoffs should correlate with hierarchies of competitive ability, relative abundance, and coexistence in plant communities. We examined 6 classic and ...
SchuetteP0512 - ScholarWorks
... government-protected areas in Africa due to habitat fragmentation, conversion of rangeland to farmland, and conflict. Though government-protected areas are an important component of conservation and management policy, it is also important to include landscapes that vary in their degree of protection ...
... government-protected areas in Africa due to habitat fragmentation, conversion of rangeland to farmland, and conflict. Though government-protected areas are an important component of conservation and management policy, it is also important to include landscapes that vary in their degree of protection ...
Community Ecology 8
... as a group of species utilising the same environmental resources by a similar foraging method. MacMahon et al. simplified the original definition even more by excluding a foraging method. This concept is focused on utilisation patterns of resources by species regardless the purpose of use. Our objec ...
... as a group of species utilising the same environmental resources by a similar foraging method. MacMahon et al. simplified the original definition even more by excluding a foraging method. This concept is focused on utilisation patterns of resources by species regardless the purpose of use. Our objec ...
The Ecology of Invasions and The Invasions of Ecology
... from the initial condition and the internal dynamic.”xvii Open technological systems, on the other hand, are unable to account for external factors, and are therefore vulnerable to the influences of those “environmental systems” that cannot be adequately dealt with by any available technological ca ...
... from the initial condition and the internal dynamic.”xvii Open technological systems, on the other hand, are unable to account for external factors, and are therefore vulnerable to the influences of those “environmental systems” that cannot be adequately dealt with by any available technological ca ...
Environmental filtering of crustacean zooplankton
... lake. This method produces a spectral decomposition of spatial relationships among sampling sites based on the diagonalization of a spatial weighting matrix. The generated spatial variables can be directly linked to the spatial patterns of species and environmental factors (Bellier et al., 2007; Bor ...
... lake. This method produces a spectral decomposition of spatial relationships among sampling sites based on the diagonalization of a spatial weighting matrix. The generated spatial variables can be directly linked to the spatial patterns of species and environmental factors (Bellier et al., 2007; Bor ...
Functional traits, convergent evolution, and periodic tables of niches
... Ecology faces challenges not shared by chemistry that complicate attempts to create similar classifications. Organisms and their habitats reveal variation across multiple dimensions and scales, are subject to stochastic influences, and contemporary observations are, to varying degrees, influenced by ...
... Ecology faces challenges not shared by chemistry that complicate attempts to create similar classifications. Organisms and their habitats reveal variation across multiple dimensions and scales, are subject to stochastic influences, and contemporary observations are, to varying degrees, influenced by ...