A presence-only habitat suitability model for large grazing
... through the centroid of all species observations and the centroid of all background cells in the study area. A high MF value therefore indicates that the species requirements are significantly different from average habitat conditions. Several specialization factors (SF) are then successively extrac ...
... through the centroid of all species observations and the centroid of all background cells in the study area. A high MF value therefore indicates that the species requirements are significantly different from average habitat conditions. Several specialization factors (SF) are then successively extrac ...
Dispersal and persistence
... What is the relative importance of long-distance dispersal events and vicariance (population-splitting events)? Eclecticist - dispersal and vicariance events are both important ...
... What is the relative importance of long-distance dispersal events and vicariance (population-splitting events)? Eclecticist - dispersal and vicariance events are both important ...
Fish population size, and not density, as the determining factor of
... The diversity and abundance of parasites vary widely among populations of the same host species. These infection parameters are, to some extent, determined by characteristics of the host population or of its habitat. Recent studies have supported predictions derived from epidemiological models regar ...
... The diversity and abundance of parasites vary widely among populations of the same host species. These infection parameters are, to some extent, determined by characteristics of the host population or of its habitat. Recent studies have supported predictions derived from epidemiological models regar ...
Quiz thinking - University of Western Cape
... the price the biosphere is going to exact from humanity because of the extinctions humans have caused. Which of the following gasses must be absent for fossilization to occur? oxygen hydrogen nitrogen carbon dioxide nitrous oxide For Conservation Biology Chapter 7 A group of interacting individuals ...
... the price the biosphere is going to exact from humanity because of the extinctions humans have caused. Which of the following gasses must be absent for fossilization to occur? oxygen hydrogen nitrogen carbon dioxide nitrous oxide For Conservation Biology Chapter 7 A group of interacting individuals ...
Geographic range of West African freshwater fishes
... function. A stochastic model in which all species are assumed to have the same probability of extinction in each river and the same probability of immigration from one river to another was developed Lo test the possibility of reconstituting a frequency distribution close IO that observed. II was pos ...
... function. A stochastic model in which all species are assumed to have the same probability of extinction in each river and the same probability of immigration from one river to another was developed Lo test the possibility of reconstituting a frequency distribution close IO that observed. II was pos ...
Full Text - Cedar Creek Ecosystem Science Reserve
... but their relative importance varies greatly among the models. This theory reinforces recent experimental results and shows that effects of biodiversity on ecosystem functioning are predicted by well-known ecological processes. Recent studies have shown that several community and ecosystem processes ...
... but their relative importance varies greatly among the models. This theory reinforces recent experimental results and shows that effects of biodiversity on ecosystem functioning are predicted by well-known ecological processes. Recent studies have shown that several community and ecosystem processes ...
The piglet case: commensalism as a distinct category of intraspecific
... Until the current study, this relationship has not been considered or described in the context of intraspecific relationships. In brief, the results of the current study (Skok 2016) suggest that “surviving weaklings tended to have the heaviest littermates as nearest neighbours during suckling.” Furt ...
... Until the current study, this relationship has not been considered or described in the context of intraspecific relationships. In brief, the results of the current study (Skok 2016) suggest that “surviving weaklings tended to have the heaviest littermates as nearest neighbours during suckling.” Furt ...
Principles of Program Development and
... Conservation Needs Assessment process, the Guidelines on the Use of Ex Situ Management for Species Conservation (IUCN/SSC, 2014) should be used to help confirm that an ex situ program for each species is warranted, and that appropriate planning, monitoring and evaluation are considered and document ...
... Conservation Needs Assessment process, the Guidelines on the Use of Ex Situ Management for Species Conservation (IUCN/SSC, 2014) should be used to help confirm that an ex situ program for each species is warranted, and that appropriate planning, monitoring and evaluation are considered and document ...
Insects and the city: what island biogeography tells us about insect
... forest habitats were conducted in North American and in central and northern European cities that grew into agricultural and forested landscapes. By contrast, a study conducted in a Mediterranean context, where most of the species that composed the “original” insect fauna were probably associated mo ...
... forest habitats were conducted in North American and in central and northern European cities that grew into agricultural and forested landscapes. By contrast, a study conducted in a Mediterranean context, where most of the species that composed the “original” insect fauna were probably associated mo ...
Evaluating Biodiversity in Fragmented Landscapes
... Forests and woodlands support a large proportion of UK biological diversity, frequently referred to as biodiversity1. Over 40% of species within the UK Biodiversity Action Plan are associated with woodlands, and nearly 15% of habitats are specific woodland types (UK Biodiversity Steering Group, 1995 ...
... Forests and woodlands support a large proportion of UK biological diversity, frequently referred to as biodiversity1. Over 40% of species within the UK Biodiversity Action Plan are associated with woodlands, and nearly 15% of habitats are specific woodland types (UK Biodiversity Steering Group, 1995 ...
4.6 1.3 Reptiles/Amphibians
... sometime after autumn. Having the census at this time of the year is good because the foals have been weaned from their mothers, and the infant mortality will have already peaked and started to fall. By knowing a rough estimate of numbers, we are given a summary of the health of the ecosystem. Range ...
... sometime after autumn. Having the census at this time of the year is good because the foals have been weaned from their mothers, and the infant mortality will have already peaked and started to fall. By knowing a rough estimate of numbers, we are given a summary of the health of the ecosystem. Range ...
The contribution of species richness and composition to bacterial
... different resources; species-rich communities are therefore more productive because more of the overall resource is used (the “complementarity mechanism”)2. Second, there is variation in the magnitude of individual species effects on ecosystem functioning; species-rich communities are therefore more ...
... different resources; species-rich communities are therefore more productive because more of the overall resource is used (the “complementarity mechanism”)2. Second, there is variation in the magnitude of individual species effects on ecosystem functioning; species-rich communities are therefore more ...
invasional meltdown - UCF College of Sciences
... the topic, rather than facilitation between two species. Gurevitch (2006) distinguishes between simple facilitation, whereby one or more species has a positive effect on another, and positive feedbacks, whereby “[r]unaway positive feedbacks in a system create snowball effects in which a phenomenon b ...
... the topic, rather than facilitation between two species. Gurevitch (2006) distinguishes between simple facilitation, whereby one or more species has a positive effect on another, and positive feedbacks, whereby “[r]unaway positive feedbacks in a system create snowball effects in which a phenomenon b ...
Inclusion of facilitation into ecological theory
... Species interactions can also reduce or eliminate the effects of niche-shrinking factors, thereby increasing the proportion of the fundamental niche that is ultimately occupied. For example, plant densities and distributions can be increased by both plant and animal facilitators that reduce herbivor ...
... Species interactions can also reduce or eliminate the effects of niche-shrinking factors, thereby increasing the proportion of the fundamental niche that is ultimately occupied. For example, plant densities and distributions can be increased by both plant and animal facilitators that reduce herbivor ...
Herb layer dynamics of primeval fir
... 3.1 Herb species dynamics during Abieto-Fagetum development cycle In this paper, we are focusing on the best documented series of Abieto-Fagetum from Dobročský prales. Plots 1–11D were considered. Tabular synthesis (Table 1) shows that with exception of Galeopsis sp. occuring only in decaying stage, ...
... 3.1 Herb species dynamics during Abieto-Fagetum development cycle In this paper, we are focusing on the best documented series of Abieto-Fagetum from Dobročský prales. Plots 1–11D were considered. Tabular synthesis (Table 1) shows that with exception of Galeopsis sp. occuring only in decaying stage, ...
Heterohyrax brucei – Yellow
... group size, and consequently improving vigilance, particularly when offspring are present (Barry & Mundy 2002). Births are often associated with peaks in rainfall. They are predominantly browsers, but are known to infrequently supplement their diets with grasses (Hoeck 1975). The bulk of their diets ...
... group size, and consequently improving vigilance, particularly when offspring are present (Barry & Mundy 2002). Births are often associated with peaks in rainfall. They are predominantly browsers, but are known to infrequently supplement their diets with grasses (Hoeck 1975). The bulk of their diets ...
Biodiversity of the Waitakere Ranges Heritage
... 1 native mammal (long-tailed bat) Although records are not complete, it appears that we have lost 13 native bird species from the Ranges and 17 species from the lowlands. The short-tailed bat was once common in the region but has not been recorded for some time. In contrast to the Waitakere Ranges, ...
... 1 native mammal (long-tailed bat) Although records are not complete, it appears that we have lost 13 native bird species from the Ranges and 17 species from the lowlands. The short-tailed bat was once common in the region but has not been recorded for some time. In contrast to the Waitakere Ranges, ...
Single Species versus Multiple Species Models: The Economic
... The third terms on the RHS of Equations (8) and (9) reflect the biological interdependence of the two species, modified by the relative marginal profitability of each. Each equation indicates that returns for one species are modified by the marginal affect that species has on the other, times the pr ...
... The third terms on the RHS of Equations (8) and (9) reflect the biological interdependence of the two species, modified by the relative marginal profitability of each. Each equation indicates that returns for one species are modified by the marginal affect that species has on the other, times the pr ...
Alternative stable states and regional community structure
... patches connected by dispersal. Patches undergo stochastic extinction and are recolonized by species via global dispersal from the region. Stochastic extinction of local populations occurs via extrinsic factors such as disturbance, but not through exclusion by colonizing species. When occupied, patc ...
... patches connected by dispersal. Patches undergo stochastic extinction and are recolonized by species via global dispersal from the region. Stochastic extinction of local populations occurs via extrinsic factors such as disturbance, but not through exclusion by colonizing species. When occupied, patc ...
Silviculture Management Prescriptions for Two Sites in the Lower
... ability of species to migrate and adapt to new climatic envelopes are in the early stages, but it is widely accepted that many species will no longer be able to compete and thrive in their current ranges. The BEC system is useful for a variety of applications within global climate science. The BEC s ...
... ability of species to migrate and adapt to new climatic envelopes are in the early stages, but it is widely accepted that many species will no longer be able to compete and thrive in their current ranges. The BEC system is useful for a variety of applications within global climate science. The BEC s ...
Potential impacts of climate change on the distributions and diversity
... climate data, generated by the coupled atmosphere-ocean circulation model, HadCM3 (Pope et al. 2000; Gordon et al. 2000), were provided by the Hadley Centre for Climate Prediction and Research (www.meto.gov.uk/research/hadleycentre) and The Tyndall Centre for Climate Change Research (www.tyndall.ac. ...
... climate data, generated by the coupled atmosphere-ocean circulation model, HadCM3 (Pope et al. 2000; Gordon et al. 2000), were provided by the Hadley Centre for Climate Prediction and Research (www.meto.gov.uk/research/hadleycentre) and The Tyndall Centre for Climate Change Research (www.tyndall.ac. ...
Sciurus carolinensis, Eastern Gray Squirrel
... Home range averages 0.5-10 ha, with older males tending to have the largest ranges (Teaford 1986); usually home range is less than five hectares (see Koprowski 1994). Not territorial, home range overlap is extensive; social system is characterized by a linear dominance hierarchy. Disperses up to a f ...
... Home range averages 0.5-10 ha, with older males tending to have the largest ranges (Teaford 1986); usually home range is less than five hectares (see Koprowski 1994). Not territorial, home range overlap is extensive; social system is characterized by a linear dominance hierarchy. Disperses up to a f ...
Patterns of cooccurrences in a killifish
... species description includes information on body size, intraspecific variation in size may swamp interspecific differences (Woodward et al. 2005; Violle et al. 2012). Furthermore, body sizes of individuals may be more important for coexistence than species identity (Gotelli 1997). Body size has a ro ...
... species description includes information on body size, intraspecific variation in size may swamp interspecific differences (Woodward et al. 2005; Violle et al. 2012). Furthermore, body sizes of individuals may be more important for coexistence than species identity (Gotelli 1997). Body size has a ro ...
