RevShtExIB160
... Differentiate between density dependent and density-independent mortality factors and name three examples for each type. Explain the relationship in population levels between a predator like a lynx and its prey, such as the snowshoe hare. How do these populations change over time and in what sequenc ...
... Differentiate between density dependent and density-independent mortality factors and name three examples for each type. Explain the relationship in population levels between a predator like a lynx and its prey, such as the snowshoe hare. How do these populations change over time and in what sequenc ...
Patch area, substrate depth, and richness affect giving
... warblers gleaning insects appeared to be strongly influenced by fine-scale foliage structure, mainly: the species of leaf, accessibility to perches, and the leaf surface qualities (Whelan 1989, 2001). Often, giving-up density is used as a surrogate for quitting harvest rate. However, when patches va ...
... warblers gleaning insects appeared to be strongly influenced by fine-scale foliage structure, mainly: the species of leaf, accessibility to perches, and the leaf surface qualities (Whelan 1989, 2001). Often, giving-up density is used as a surrogate for quitting harvest rate. However, when patches va ...
callippe silverspot butterfly
... were usually laid within three inches of a violet, but none were observed to be laid directly on the violets (TRA 1982). TRA (1982) provides the following account of the typical oviposition behavior of the Callippe silverspot butterfly. "The gravid female slowly searches a suitable site through a se ...
... were usually laid within three inches of a violet, but none were observed to be laid directly on the violets (TRA 1982). TRA (1982) provides the following account of the typical oviposition behavior of the Callippe silverspot butterfly. "The gravid female slowly searches a suitable site through a se ...
CMN Microhabitat Fact Sheet - Far South Coast Conservation
... Above are some examples of material that could be used as artificial microhabitat. All have different properties and suit some fauna better than others. If using old bricks, stack them in piles to create lots of crevices. Old decaying wood is great for invertebrates, the more rotten the better. What ...
... Above are some examples of material that could be used as artificial microhabitat. All have different properties and suit some fauna better than others. If using old bricks, stack them in piles to create lots of crevices. Old decaying wood is great for invertebrates, the more rotten the better. What ...
Introduction to Landscape Ecology
... negatively influenced by presence of least flycatcher territories. •Across new England, these two species are found in the same places? ...
... negatively influenced by presence of least flycatcher territories. •Across new England, these two species are found in the same places? ...
Study Guide for Final
... Compare R and K strategy for reproduction, give examples. Explain why the size of a population tends to increase. Describe and draw the stages of a typical population growth curve. Identify key components that cause population growth. Identify the factors that ultimately limit population size. ...
... Compare R and K strategy for reproduction, give examples. Explain why the size of a population tends to increase. Describe and draw the stages of a typical population growth curve. Identify key components that cause population growth. Identify the factors that ultimately limit population size. ...
Effects of resource abundance on habitat selection and spatial
... aspects of the species in question (KORN 1986; MCNAB 1963). In mammal species with short life spans and high reproductive rates, changes in food abundance can lead to rapid fluctuations in population density and space use (JENSEN 1982; OSTFELD et al. 1996; STRADIOTTO 2009). Many experiments conducte ...
... aspects of the species in question (KORN 1986; MCNAB 1963). In mammal species with short life spans and high reproductive rates, changes in food abundance can lead to rapid fluctuations in population density and space use (JENSEN 1982; OSTFELD et al. 1996; STRADIOTTO 2009). Many experiments conducte ...
L-276 Edge and Other Wildlife Concepts
... The actual presence of edge is not important; it is the arrangement or structure of vegetation that may happen to be in an edge zone. For example, a medium-contrast edge between a riparian oak stand and tallgrass prairie might be composed of an interspersion of shade-intolerant, shrub-sized vegetati ...
... The actual presence of edge is not important; it is the arrangement or structure of vegetation that may happen to be in an edge zone. For example, a medium-contrast edge between a riparian oak stand and tallgrass prairie might be composed of an interspersion of shade-intolerant, shrub-sized vegetati ...
Coexistence and relative abundance in annual plant assemblages
... number of arriving seeds for the ith species follows Poisson distribution with parameter mi, the mean number of seeds produced by the i th species per patch in the previous generation (the right side of eq. [1]). The initial distribution of seeds among patches has mi p 0.1 for all species. We also r ...
... number of arriving seeds for the ith species follows Poisson distribution with parameter mi, the mean number of seeds produced by the i th species per patch in the previous generation (the right side of eq. [1]). The initial distribution of seeds among patches has mi p 0.1 for all species. We also r ...
Species-Specific Responses of Carnivores to Human
... birds, and mammals, including seven species of mammalian carnivores. Despite the lack of research studies, there is great concern that the destruction and modification of natural habitats has caused a reduction in the distribution and population numbers of these carnivores. The aim of this study was ...
... birds, and mammals, including seven species of mammalian carnivores. Despite the lack of research studies, there is great concern that the destruction and modification of natural habitats has caused a reduction in the distribution and population numbers of these carnivores. The aim of this study was ...
Species at Risk Database Management System
... This population gives birth on the open arctic tundra, and most herds winter in vast subarctic forests. Well-known for its large aggregations, lengthy migrations, and significant cultural and social value to northern Aboriginal Peoples and other Canadians, its 14-15 subpopulations range from northea ...
... This population gives birth on the open arctic tundra, and most herds winter in vast subarctic forests. Well-known for its large aggregations, lengthy migrations, and significant cultural and social value to northern Aboriginal Peoples and other Canadians, its 14-15 subpopulations range from northea ...
Demographics of a Geographically
... lacking any contact with other populations can become increasingly susceptible to environmental and demographic stochasticity and natural catastrophes ...
... lacking any contact with other populations can become increasingly susceptible to environmental and demographic stochasticity and natural catastrophes ...
How life-history traits affect ecosystem properties: effects of dispersal
... (Begon et al. 2006). The theory has also been further developed to derive a vast array of secondary predictions, such as the impact of resource heterogeneity and fertilization on species richness and successional dynamics (Tilman 1982, 1985). The resource-ratio theory builds on the idea that spatial ...
... (Begon et al. 2006). The theory has also been further developed to derive a vast array of secondary predictions, such as the impact of resource heterogeneity and fertilization on species richness and successional dynamics (Tilman 1982, 1985). The resource-ratio theory builds on the idea that spatial ...
Great Basin Spadefoot (Spea intermontana)
... population is probably at least 10,000 individuals, but much uncertainly is associated with this number and it could be much larger. However, it is almost certain that populations fluctuate greatly in size; the population at its lowest ebb may well fall below the 10,000 individual threshold. Most br ...
... population is probably at least 10,000 individuals, but much uncertainly is associated with this number and it could be much larger. However, it is almost certain that populations fluctuate greatly in size; the population at its lowest ebb may well fall below the 10,000 individual threshold. Most br ...
Comparative analysis of the interaction between habitat
... of the other character (k ¼ 4; Figure 1d) and a dependent model where the probability of 0-1 or 1-0 in one character differed based on the state of the other character (k ¼ 8; Figure 1d). Preliminary analyses showed that a symmetric constant-rate model was favored for the evolution of habitat occupa ...
... of the other character (k ¼ 4; Figure 1d) and a dependent model where the probability of 0-1 or 1-0 in one character differed based on the state of the other character (k ¼ 8; Figure 1d). Preliminary analyses showed that a symmetric constant-rate model was favored for the evolution of habitat occupa ...
CONSERVATION GENETICS OF THE LARGEST CLUSTER OF
... habitat that supports virtually all tortoise populations has been reduced by .80% (Mushinsky et al., 2006). Much of the remaining habitat is isolated within an unsuitable intervening matrix of human development and other land uses (Auffenberg and Franz, 1982; McCoy et al., 2006; Mushinsky et al., 20 ...
... habitat that supports virtually all tortoise populations has been reduced by .80% (Mushinsky et al., 2006). Much of the remaining habitat is isolated within an unsuitable intervening matrix of human development and other land uses (Auffenberg and Franz, 1982; McCoy et al., 2006; Mushinsky et al., 20 ...
Lizard population dynamics in a controlled landscape of Florida Scrub
... catastrophic wildfire in 1935, control of the landscape to prevent fires became a priority. Natural fire frequency in Florida Scrub is thought to be quite variable, from 10-100 years, but a reasonable estimate for fire frequency in the Florida Scrub where sand pine is common, hence known as Florida ...
... catastrophic wildfire in 1935, control of the landscape to prevent fires became a priority. Natural fire frequency in Florida Scrub is thought to be quite variable, from 10-100 years, but a reasonable estimate for fire frequency in the Florida Scrub where sand pine is common, hence known as Florida ...
Biojeopardy: Ecology
... territorial or compete for the same resources often. (example is birds’ nesting habits) ...
... territorial or compete for the same resources often. (example is birds’ nesting habits) ...
Section 5 WILDLIFE AND SIGNIFICANT WILDLIFE
... The State of New Hampshire supports a rich diversity of plants and animals. Most are common throughout the state but some are restricted to certain unique habitats, are at or near the edge of their species distribution range, or may be threatened due to loss of habitat or other stressors. The Town o ...
... The State of New Hampshire supports a rich diversity of plants and animals. Most are common throughout the state but some are restricted to certain unique habitats, are at or near the edge of their species distribution range, or may be threatened due to loss of habitat or other stressors. The Town o ...
Individual dispersal, landscape connectivity and
... II. Individual dispersal and the linkage strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (1) Costs and benefits of dispersal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
... II. Individual dispersal and the linkage strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (1) Costs and benefits of dispersal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Section 4: Population Samplings
... Humans can remove or alter the constraints on population sizes, with both good and bad consequences. On the negative side, about 17% of the 1500 introduced insect species require the use of pesticides to control them. For example, African killer bees are expanding their population and migrating from ...
... Humans can remove or alter the constraints on population sizes, with both good and bad consequences. On the negative side, about 17% of the 1500 introduced insect species require the use of pesticides to control them. For example, African killer bees are expanding their population and migrating from ...
the Striped Legless Lizard brochure
... recent records of this animal in north-east Victoria come from the Upper Goulburn River catchment, where they have been found in a variety of locations (gullies, slopes and ridges) and are often found in ‘unimproved’ paddocks, or on roadsides with good grass cover. They used to occur widely on the p ...
... recent records of this animal in north-east Victoria come from the Upper Goulburn River catchment, where they have been found in a variety of locations (gullies, slopes and ridges) and are often found in ‘unimproved’ paddocks, or on roadsides with good grass cover. They used to occur widely on the p ...
Organisms and Their Environment
... cause changes in other populations. For instance, if the number of mouse-eating hawks in a community increases slightly, the number of mice in that community will decrease slightly. Other changes can be more extreme. For example, one population may grow so large that it threatens the food supply of ...
... cause changes in other populations. For instance, if the number of mouse-eating hawks in a community increases slightly, the number of mice in that community will decrease slightly. Other changes can be more extreme. For example, one population may grow so large that it threatens the food supply of ...
Effects of Urbanization on the North American Cougar
... As generalist predators, cougars will make use of what prey is available. The behavioral plasticity traits in cougars allows them to acclimate to changing conditions. Seasonal differences such as prey migration are important to consider when studying these predators because cougars will typically re ...
... As generalist predators, cougars will make use of what prey is available. The behavioral plasticity traits in cougars allows them to acclimate to changing conditions. Seasonal differences such as prey migration are important to consider when studying these predators because cougars will typically re ...
CISA letter in response to Environ
... Eelgrass density is depressed by space competition with farmed geoducks, and intertidal harvest reduces eelgrass density by more than 70 percent. (See ‘Geoduck Clam Aquaculture as Press and Pulse Perturbations to Eelgrass’, Ruesink, Rowell.) An evaluation by Entrix in 2004, also funded by Taylor She ...
... Eelgrass density is depressed by space competition with farmed geoducks, and intertidal harvest reduces eelgrass density by more than 70 percent. (See ‘Geoduck Clam Aquaculture as Press and Pulse Perturbations to Eelgrass’, Ruesink, Rowell.) An evaluation by Entrix in 2004, also funded by Taylor She ...