Here - American Society of Mammalogists
... Program in Ecology and Department of Zoology and Physiology, University of Wyoming, Laramie, WY 82091 USA; National Museums of Kenya, Nairobi, Kenya; Hirola Conservation Program, Garissa, Kenya Range Collapse, Demography and Habitat Selection of the Critically Endangered Hirola Antelope (Beatragus h ...
... Program in Ecology and Department of Zoology and Physiology, University of Wyoming, Laramie, WY 82091 USA; National Museums of Kenya, Nairobi, Kenya; Hirola Conservation Program, Garissa, Kenya Range Collapse, Demography and Habitat Selection of the Critically Endangered Hirola Antelope (Beatragus h ...
Intertidal and Nearshore Rocky Reefs
... Simple models describing trophic relationships between groups within rocky reef ecosystems are based on few trophic levels, with primary producers and filter-feeders occupying the base, herbivores the middle and predators the top (Paine 1980, Menge and Sutherland 1987). However, some authors have de ...
... Simple models describing trophic relationships between groups within rocky reef ecosystems are based on few trophic levels, with primary producers and filter-feeders occupying the base, herbivores the middle and predators the top (Paine 1980, Menge and Sutherland 1987). However, some authors have de ...
The vulnerability of provincially rare species (species-at
... changing climate is to identify the vulnerability of selected assets in a study area. We used NatureServe’s Climate Change Vulnerability Index (CCVI) on a subset of provincially rare species inhabiting the Lake Simcoe watershed, Ontario, Canada, to identify species that are potentially vulnerable to ...
... changing climate is to identify the vulnerability of selected assets in a study area. We used NatureServe’s Climate Change Vulnerability Index (CCVI) on a subset of provincially rare species inhabiting the Lake Simcoe watershed, Ontario, Canada, to identify species that are potentially vulnerable to ...
Lepomis cyanellus (Rafinesque, 1819)
... California, it is believed to have helped deplete the California roach, Hesperoleucus symmetricus (CABI, 2013). L. cyanellus along with other predatory fish species is also thought to be responsible for the decline of native frogs and salamanders in the USA (CABI, 2013). L. cyanellus is listed as a ...
... California, it is believed to have helped deplete the California roach, Hesperoleucus symmetricus (CABI, 2013). L. cyanellus along with other predatory fish species is also thought to be responsible for the decline of native frogs and salamanders in the USA (CABI, 2013). L. cyanellus is listed as a ...
- DiscardLess
... given stock or fish community. Catch (C) is a function of the available biomass (B) multiplied by the applied fishing mortality (F). Consequently, there are only two practical options for regu lating the catch: either set the catch limits (total allowable catch) or regulate the fishing mortality. T ...
... given stock or fish community. Catch (C) is a function of the available biomass (B) multiplied by the applied fishing mortality (F). Consequently, there are only two practical options for regu lating the catch: either set the catch limits (total allowable catch) or regulate the fishing mortality. T ...
Molluscan Studies - Oxford Academic
... width in A. coralliophila, based on 49 specimens collected at the study site between 2005 and 2013. The shell height increases faster than the shell width in the early stage of growth, meaning that it first grows horizontally and then vertically relative to the substrate (Figs 2, 3). The shell growth ...
... width in A. coralliophila, based on 49 specimens collected at the study site between 2005 and 2013. The shell height increases faster than the shell width in the early stage of growth, meaning that it first grows horizontally and then vertically relative to the substrate (Figs 2, 3). The shell growth ...
Title Variation in Low Intertidal Communities: Submerged vs
... amphipods and isopods was found to vary at different tidal levels and different times during the tidal cycle (Ingólfsson and Agnarsson, 2003). A study carried out in the rocky intertidal zone in Ireland found a significant trend of decreasing biodiversity with increasing shore height during periods ...
... amphipods and isopods was found to vary at different tidal levels and different times during the tidal cycle (Ingólfsson and Agnarsson, 2003). A study carried out in the rocky intertidal zone in Ireland found a significant trend of decreasing biodiversity with increasing shore height during periods ...
New Zealand`s Naturally Uncommon Ecosystems
... and rare species. A national-scale typology provides a list of 72 naturally uncommon ecosystems distributed across the country. These may be small (e.g. 100 m2 to a few hundreds of hectares) but geographically widespread, or larger (e.g. 10 000s of hectares) but geographically restricted. Many of th ...
... and rare species. A national-scale typology provides a list of 72 naturally uncommon ecosystems distributed across the country. These may be small (e.g. 100 m2 to a few hundreds of hectares) but geographically widespread, or larger (e.g. 10 000s of hectares) but geographically restricted. Many of th ...
Riverine Ecosystems in International Law
... 16. The main federal agencies involved in administering riverine-riparian ecosystems are the Forest Service (PS), Bureau of Land Management (BLM), Fish and Wildlife Service (FWS) and National Park Service (NPS). The former two carry multiple-use mandates, especially the FS under the Multiple-Use, Su ...
... 16. The main federal agencies involved in administering riverine-riparian ecosystems are the Forest Service (PS), Bureau of Land Management (BLM), Fish and Wildlife Service (FWS) and National Park Service (NPS). The former two carry multiple-use mandates, especially the FS under the Multiple-Use, Su ...
Hunting-induced defaunation drives increased seed predation and
... of seed predation, but only for small-seeded trees, while largeseeded trees benefit from decreased seed predation by largebodied vertebrates (Beckman and Muller-Landau, 2007; Dirzo et al., 2007; Roldán and Simonetti, 2001). In contrast, Asquith et al. (1997) and Galetti et al. (2015a) documented inc ...
... of seed predation, but only for small-seeded trees, while largeseeded trees benefit from decreased seed predation by largebodied vertebrates (Beckman and Muller-Landau, 2007; Dirzo et al., 2007; Roldán and Simonetti, 2001). In contrast, Asquith et al. (1997) and Galetti et al. (2015a) documented inc ...
Gray Wolf
... communities benefit from tourism. They also value the wildness of having wilderness in their backyard. Scientific research - the study of the ecology of wolf communities and principles of predator prey relationships have benefited sociology, and behavior sciences. ...
... communities benefit from tourism. They also value the wildness of having wilderness in their backyard. Scientific research - the study of the ecology of wolf communities and principles of predator prey relationships have benefited sociology, and behavior sciences. ...
mink
... range against a stronger intruder, but is most often a case of forced departure because the local food supply has failed or some other important features of the home range has been lost. Residents remain solitary and separate as a result of a “territorial” social system in which there is little over ...
... range against a stronger intruder, but is most often a case of forced departure because the local food supply has failed or some other important features of the home range has been lost. Residents remain solitary and separate as a result of a “territorial” social system in which there is little over ...
Uca rapax (Mudflat Fiddler Crab)
... POPULATION ECOLOGY. U. rapax are usually seen with related crabs. A study in north Brazil showed that Uca and Ucides species occur together in the intertidal region of the mangrove forest (Diele and Koch, 2010). No competition for food is seen between Ucides and Uca. However at an intraspecific leve ...
... POPULATION ECOLOGY. U. rapax are usually seen with related crabs. A study in north Brazil showed that Uca and Ucides species occur together in the intertidal region of the mangrove forest (Diele and Koch, 2010). No competition for food is seen between Ucides and Uca. However at an intraspecific leve ...
Variation in Population Synchrony in a Multi
... different populations of single species [1–5]. In contrast, synchrony among sympatric populations of different species has received much less attention [6–9]. In the limited number of studies examining synchrony in more than one species, variation in only a single demographic parameter, such as popu ...
... different populations of single species [1–5]. In contrast, synchrony among sympatric populations of different species has received much less attention [6–9]. In the limited number of studies examining synchrony in more than one species, variation in only a single demographic parameter, such as popu ...
Estimating multivariate selection gradients in the fossil record: a
... naticids were not necessarily strong agents of selection on two traits previously thought to be important to survival of drilling attacks for two of their common prey species. We also show that multivariate selection gradient estimates differ from traditional predation intensity estimates but are su ...
... naticids were not necessarily strong agents of selection on two traits previously thought to be important to survival of drilling attacks for two of their common prey species. We also show that multivariate selection gradient estimates differ from traditional predation intensity estimates but are su ...
Gray Ratsnake (Elaphe spiloides) - Registre public des espèces en
... isolated and genetically distinct from each other and from populations in the United States. Both populations are therefore valuable for the preservation of the total genetic diversity of this species. Gray Ratsnakes also contribute significantly to the ecological communities in which they exist. Th ...
... isolated and genetically distinct from each other and from populations in the United States. Both populations are therefore valuable for the preservation of the total genetic diversity of this species. Gray Ratsnakes also contribute significantly to the ecological communities in which they exist. Th ...
Chances and challenges in the conservation of
... Most conservation efforts in aquatic ecosystems focus on surface waters. This is understandable given their public visibility, accessibility and, in many parts of the world, stark evidence of their vulnerability to human impact. On the other hand, programmes to protect and conserve groundwaters, and ...
... Most conservation efforts in aquatic ecosystems focus on surface waters. This is understandable given their public visibility, accessibility and, in many parts of the world, stark evidence of their vulnerability to human impact. On the other hand, programmes to protect and conserve groundwaters, and ...
Ways organisms interact - Franklin County Public Schools
... Horses and donkeys are different species. If you breed them, the result is a mule which can NOT have offspring! ...
... Horses and donkeys are different species. If you breed them, the result is a mule which can NOT have offspring! ...
Phenotypic plasticity and interactions among plants
... variation in the abiotic environment (Silvertown and Gordon 1989, Sultan 1993a, b, c, Pigliucci 2001). In one of the few experiments explicitly designed to examine the effects of plastic responses to abiotic factors on competition, Poorter and Lambers (1986) measured the outcome of competition, in e ...
... variation in the abiotic environment (Silvertown and Gordon 1989, Sultan 1993a, b, c, Pigliucci 2001). In one of the few experiments explicitly designed to examine the effects of plastic responses to abiotic factors on competition, Poorter and Lambers (1986) measured the outcome of competition, in e ...
Reef fish ecology, conservation, and fisheries: the scientific legacy of
... which had higher biomass than expected, given socioeconomic and environmental conditions, tended to have customary tenure and taboo arrangements. The promise for the future of reef fishes and fisheries is blending of such traditional ecological knowledge with novel holistic or ecosystem-based Wester ...
... which had higher biomass than expected, given socioeconomic and environmental conditions, tended to have customary tenure and taboo arrangements. The promise for the future of reef fishes and fisheries is blending of such traditional ecological knowledge with novel holistic or ecosystem-based Wester ...
indirect effects of large herbivores on snakes in an african savanna
... understand relatively little about how these declines influence other species. Previous studies have shown that the removal of large herbivorous mammals from large-scale, replicated experimental plots results in a dramatic increase in the density of small mammals, an increase that has been attributed ...
... understand relatively little about how these declines influence other species. Previous studies have shown that the removal of large herbivorous mammals from large-scale, replicated experimental plots results in a dramatic increase in the density of small mammals, an increase that has been attributed ...
Landscape connectivity analysis for conservation
... need to consider and implement connectivity recommendations carefully in each landscape plan by adequately selecting the most appropriate approaches, methods and input data for the analysis. Hence experience, further advances in research, and monitoring of our efforts will allow us to improve our un ...
... need to consider and implement connectivity recommendations carefully in each landscape plan by adequately selecting the most appropriate approaches, methods and input data for the analysis. Hence experience, further advances in research, and monitoring of our efforts will allow us to improve our un ...
Population Ecology
... • Concept 52.3: The exponential model describes population growth in an idealized, unlimited environment • It is useful to study population growth in an idealized situation – In order to understand the capacity of species for increase and the conditions that may facilitate this type of growth ...
... • Concept 52.3: The exponential model describes population growth in an idealized, unlimited environment • It is useful to study population growth in an idealized situation – In order to understand the capacity of species for increase and the conditions that may facilitate this type of growth ...
Theoretical ecology
Theoretical ecology is the scientific discipline devoted to the study of ecological systems using theoretical methods such as simple conceptual models, mathematical models, computational simulations, and advanced data analysis. Effective models improve understanding of the natural world by revealing how the dynamics of species populations are often based on fundamental biological conditions and processes. Further, the field aims to unify a diverse range of empirical observations by assuming that common, mechanistic processes generate observable phenomena across species and ecological environments. Based on biologically realistic assumptions, theoretical ecologists are able to uncover novel, non-intuitive insights about natural processes. Theoretical results are often verified by empirical and observational studies, revealing the power of theoretical methods in both predicting and understanding the noisy, diverse biological world.The field is broad and includes foundations in applied mathematics, computer science, biology, statistical physics, genetics, chemistry, evolution, and conservation biology. Theoretical ecology aims to explain a diverse range of phenomena in the life sciences, such as population growth and dynamics, fisheries, competition, evolutionary theory, epidemiology, animal behavior and group dynamics, food webs, ecosystems, spatial ecology, and the effects of climate change.Theoretical ecology has further benefited from the advent of fast computing power, allowing the analysis and visualization of large-scale computational simulations of ecological phenomena. Importantly, these modern tools provide quantitative predictions about the effects of human induced environmental change on a diverse variety of ecological phenomena, such as: species invasions, climate change, the effect of fishing and hunting on food network stability, and the global carbon cycle.