Climate and Mammals - Stanford University
... regions by population connectivity and gene flow. Over time these population processes, combined with the addition of genetic novelty, affect the prevalence of genes with adaptive potential for novel climates, which also is fodder for heritable changes within lineages (Garant et al. 2007). As connect ...
... regions by population connectivity and gene flow. Over time these population processes, combined with the addition of genetic novelty, affect the prevalence of genes with adaptive potential for novel climates, which also is fodder for heritable changes within lineages (Garant et al. 2007). As connect ...
Habitat corridors facilitate genetic resilience irrespective of species
... There are a couple of reasons why modeling asexual reproduction is useful as null model. First, when including sexual reproduction, one must choose a maximum allowable distance between two individuals to let them reproduce. This distance is somewhat arbitrary and, more importantly, would constrain i ...
... There are a couple of reasons why modeling asexual reproduction is useful as null model. First, when including sexual reproduction, one must choose a maximum allowable distance between two individuals to let them reproduce. This distance is somewhat arbitrary and, more importantly, would constrain i ...
Biological Resources Assessment of the Proposed
... not conducted during the breeding season and therefore, wildlife breeding use of the project site was not confirmed. This is particularly relevant for certain special-status species, such as Swainson’s hawk (Buteo swainsoni), white-tailed kite (Elanus leucurus), and burrowing owl (Athene cunicularia ...
... not conducted during the breeding season and therefore, wildlife breeding use of the project site was not confirmed. This is particularly relevant for certain special-status species, such as Swainson’s hawk (Buteo swainsoni), white-tailed kite (Elanus leucurus), and burrowing owl (Athene cunicularia ...
Estimating Relative Energy Fluxes Using the Food Web, Species
... The flux models were also used to create a model of sampling eVort. Assuming sampling methods with certain properties, this model associates a p-value with a claim that a given link did not occur in a web, or that, if it did occur, its flux was less than a certain value. If this model was tested and ...
... The flux models were also used to create a model of sampling eVort. Assuming sampling methods with certain properties, this model associates a p-value with a claim that a given link did not occur in a web, or that, if it did occur, its flux was less than a certain value. If this model was tested and ...
assessment
... Justification: The species is known only from one 500 m reach of a small stream. The estimated area of occupancy (AOO) is less than 1 km² and the estimated population in 2005 was <1,000 individuals. There has been an estimated reduction of more than 80% in extent of occurrence (EOO) over the last th ...
... Justification: The species is known only from one 500 m reach of a small stream. The estimated area of occupancy (AOO) is less than 1 km² and the estimated population in 2005 was <1,000 individuals. There has been an estimated reduction of more than 80% in extent of occurrence (EOO) over the last th ...
adaptive radiation driven by the interplay of eco
... temporal scales. For example, the connections between populations may vary due to glaciations and postglacial secondary contacts (Hewitt 2000; Young et al. 2002; Zhang et al. 2008). Global climatic variations and geological processes may cause sea level changes, resulting in repetitive separations a ...
... temporal scales. For example, the connections between populations may vary due to glaciations and postglacial secondary contacts (Hewitt 2000; Young et al. 2002; Zhang et al. 2008). Global climatic variations and geological processes may cause sea level changes, resulting in repetitive separations a ...
15. NEW WORLD NECTAR-FEEDING VERTEBRATES
... in regional species diversity with peak diversities occurring in northwestern South America and southern Central America. Diversity at the community level shows parallel trends with species richness increasing as a power function of annual rainfall per site. Nectar-bat diversity ranges from 1-6 spec ...
... in regional species diversity with peak diversities occurring in northwestern South America and southern Central America. Diversity at the community level shows parallel trends with species richness increasing as a power function of annual rainfall per site. Nectar-bat diversity ranges from 1-6 spec ...
The endangered quino checkerspot butterfly, Euphydryas editha
... elevations.” After censusing 151 previously recorded populations, she concluded that there indeed was a correlation, acknowledging that the relationships expected were complex, particularly with regard to habitat destruction and its effect on recolonization. Given the complex population structure of ...
... elevations.” After censusing 151 previously recorded populations, she concluded that there indeed was a correlation, acknowledging that the relationships expected were complex, particularly with regard to habitat destruction and its effect on recolonization. Given the complex population structure of ...
The role of ants in conservation monitoring: If, when
... (Greenslade, 1978; Andersen, 1995a). Aligned with this is the functional group approach which defines ants according to responses to environmental stress and disturbance (Andersen, 1995b). The response of these groups to disturbance has been found to be predictable in Australia (e.g., Vanderwoude et ...
... (Greenslade, 1978; Andersen, 1995a). Aligned with this is the functional group approach which defines ants according to responses to environmental stress and disturbance (Andersen, 1995b). The response of these groups to disturbance has been found to be predictable in Australia (e.g., Vanderwoude et ...
ch11_Lecture_3e - Lakeland Central School District
... • Conservation geneticists = study genetic attributes of organisms to infer the status of their population • Minimum viable population = how small a population can become before it runs into problems • Metapopulations = a network of subpopulations - Small populations are most vulnerable to extinctio ...
... • Conservation geneticists = study genetic attributes of organisms to infer the status of their population • Minimum viable population = how small a population can become before it runs into problems • Metapopulations = a network of subpopulations - Small populations are most vulnerable to extinctio ...
An Ecological Assessment of Insect Diversity at Organic Central
... Modern industrial agriculture is the most widespread cause of anthropogenic land use changes on terrestrial ecosystems (Kim et al. 2006). Agricultural intensification across the world has permanently modified our landscapes and changed the way we must think about and manage these lands. Approximatel ...
... Modern industrial agriculture is the most widespread cause of anthropogenic land use changes on terrestrial ecosystems (Kim et al. 2006). Agricultural intensification across the world has permanently modified our landscapes and changed the way we must think about and manage these lands. Approximatel ...
By: Cody Adkins Charlotte Anderson Michelle Barillas Holly Harlin
... palatable plant species and cover in forests, leaving a poor habitat for other animals. We investigated whether densities of white-tailed deer affects vegetation at Catoctin Mountain Park (CMP) and Frederick Municipal Forest (FMF). Our null hypotheses were that there will be no differences between o ...
... palatable plant species and cover in forests, leaving a poor habitat for other animals. We investigated whether densities of white-tailed deer affects vegetation at Catoctin Mountain Park (CMP) and Frederick Municipal Forest (FMF). Our null hypotheses were that there will be no differences between o ...
Hibernation and daily torpor minimize mammalian extinctions
... homeothermic, maintaining a constant high body temperature and thus energy expenditure, which demands a high intake of food, long foraging times, and thus exposure to predators. In contrast, only 6.5% of extinct mammals were likely heterothermic and employed multi-day torpor (hibernation) or daily t ...
... homeothermic, maintaining a constant high body temperature and thus energy expenditure, which demands a high intake of food, long foraging times, and thus exposure to predators. In contrast, only 6.5% of extinct mammals were likely heterothermic and employed multi-day torpor (hibernation) or daily t ...
Patterns of disturbance and recovery in littoral rock pools
... were significant size X time of clearance interactions affecting patterns of algal colonizat~onearly in the study. T h e percent cover of turf-forming and canopy-forming plants was greater in the small plots produced in February 1991 than in the other treatments. These effects were more evident in p ...
... were significant size X time of clearance interactions affecting patterns of algal colonizat~onearly in the study. T h e percent cover of turf-forming and canopy-forming plants was greater in the small plots produced in February 1991 than in the other treatments. These effects were more evident in p ...
Detailed Final Report - Rufford Small Grants
... level of predation by facilitating the discovery of nests or increasing the number of predators on nests and chicks in several types of habitats. Recreational activities (e.g. tourism, fishing) may interfere with lekking and disturb breeding birds. (e) Hunting and the accidental shooting while hunti ...
... level of predation by facilitating the discovery of nests or increasing the number of predators on nests and chicks in several types of habitats. Recreational activities (e.g. tourism, fishing) may interfere with lekking and disturb breeding birds. (e) Hunting and the accidental shooting while hunti ...
Influence of macroalgal mats on abundance and distribution of
... More recently, in Clonakilt Bay, Ireland, significantly higher shorebird abundances were found during winter in areas without macroalgal cover (Lewis & Kelly 2001). In many cases, general eutrophication of the estuary also enhances the biomass and production of invertebrates in macroalgal-free areas ...
... More recently, in Clonakilt Bay, Ireland, significantly higher shorebird abundances were found during winter in areas without macroalgal cover (Lewis & Kelly 2001). In many cases, general eutrophication of the estuary also enhances the biomass and production of invertebrates in macroalgal-free areas ...
Scorpiones (Scorpions) - American Museum of Natural History
... Scorpions are the fifth-most diverse order of arachnids in number of described species, but the known diversity is grossly underestimated. Estimates of total diversity run as high as 7,000 species. There are two reasons for this underestimate. (1) Scorpions are cryptic, seasonal, habitat specific, a ...
... Scorpions are the fifth-most diverse order of arachnids in number of described species, but the known diversity is grossly underestimated. Estimates of total diversity run as high as 7,000 species. There are two reasons for this underestimate. (1) Scorpions are cryptic, seasonal, habitat specific, a ...
Recovery Strategy for Puget Oregonian Snail (Cryptomastix devia
... The global range of Puget Oregonian snail extends from the Lower Mainland region of southwestern B.C., south through western Washington to the Oregon side of the Columbia Gorge and including the western Cascade Range and Puget Trough (Figure 1). The species has a patchy and scattered distribution th ...
... The global range of Puget Oregonian snail extends from the Lower Mainland region of southwestern B.C., south through western Washington to the Oregon side of the Columbia Gorge and including the western Cascade Range and Puget Trough (Figure 1). The species has a patchy and scattered distribution th ...
The importance of invertebrate biodiversity
... species can share the same habitat, some of which may have very large populations. ...
... species can share the same habitat, some of which may have very large populations. ...
TAUTOG Tautoga onitis Sometimes known as Blackfish, White Chin
... (Steimle and Shaheen 1999). The Atlantic States Marine Fisheries Commission suggested that keeping Tautog populations at sustainable levels will help prevent changes in the structure of reef fish (ASMFC 1996; Steimle and Shaheen 1999). There is no specific information on the effects of Tautog popula ...
... (Steimle and Shaheen 1999). The Atlantic States Marine Fisheries Commission suggested that keeping Tautog populations at sustainable levels will help prevent changes in the structure of reef fish (ASMFC 1996; Steimle and Shaheen 1999). There is no specific information on the effects of Tautog popula ...
Marine Ecology Progress Series 510:241
... combinations of temperature and food supply to test the effects of these factors on asexual reproduction strategies and reproduction rates. Temperature and food availability increased reproduction rates for all species and observed reproduction modes. In all cases, starvation was the most important ...
... combinations of temperature and food supply to test the effects of these factors on asexual reproduction strategies and reproduction rates. Temperature and food availability increased reproduction rates for all species and observed reproduction modes. In all cases, starvation was the most important ...
Disturbance and distributions: avoiding exclusion in a warming world
... ABSTRACT. I highlight how disturbance determines species distributions and the implications for conservation practice. In particular, I describe opportunities to mitigate some of the threats to species resulting from climate change. Ecological theory shows that disturbance processes can often slow o ...
... ABSTRACT. I highlight how disturbance determines species distributions and the implications for conservation practice. In particular, I describe opportunities to mitigate some of the threats to species resulting from climate change. Ecological theory shows that disturbance processes can often slow o ...
PREDATOR – PREY RELATIONS AND FOOD WEBS
... fish. First, the model predicts correctly the observed functional form of the relationship between encounter rate and body size. Second, the model correctly predicts lower importance of predator size and greater importance of prey size in more complex habitats. Finally, the model makes good numerica ...
... fish. First, the model predicts correctly the observed functional form of the relationship between encounter rate and body size. Second, the model correctly predicts lower importance of predator size and greater importance of prey size in more complex habitats. Finally, the model makes good numerica ...
Live-bearing Seastar - Natural Values Atlas
... disappeared from the southwestern shore of the upper Pitt Water area, and the remaining subpopulations had decreased (Prestedge 1998). However, Prestedge (2001a) published an updated paper stating that there has been an increase in the number of colonies and in subpopulation numbers since 1990 and s ...
... disappeared from the southwestern shore of the upper Pitt Water area, and the remaining subpopulations had decreased (Prestedge 1998). However, Prestedge (2001a) published an updated paper stating that there has been an increase in the number of colonies and in subpopulation numbers since 1990 and s ...
Predicting the Long-Term Effects of Hunting on Plant Species
... Dispersal can also benefit species by providing a means for bet-hedging over spatiotemporal uncertainty in the environment (Cohen 1966; see Levin et al. 2003 for a review). If the probability of successful recruitment, and thus the expected payoff of a seed, varies sufficiently in space and time, th ...
... Dispersal can also benefit species by providing a means for bet-hedging over spatiotemporal uncertainty in the environment (Cohen 1966; see Levin et al. 2003 for a review). If the probability of successful recruitment, and thus the expected payoff of a seed, varies sufficiently in space and time, th ...