AIM: Populations and Ecosystems Ideas
... This is called a mutually beneficial relationship. In some interactions, one organism will benefit by interacting and is more likely to survive and reproduce while the other is harmed and its survival and/or reproduction may be limited. o Parasites are organisms that live on or in other organisms ...
... This is called a mutually beneficial relationship. In some interactions, one organism will benefit by interacting and is more likely to survive and reproduce while the other is harmed and its survival and/or reproduction may be limited. o Parasites are organisms that live on or in other organisms ...
Ecology Basics - The Science Spot
... photosynthesis, the producers create their own food in the form of glucose, but also create the food for the other organisms in the ecosystem. The herbivores come next, then the carnivores. When these consumers eat other organisms, they use the glucose in those organisms for energy. In this example, ...
... photosynthesis, the producers create their own food in the form of glucose, but also create the food for the other organisms in the ecosystem. The herbivores come next, then the carnivores. When these consumers eat other organisms, they use the glucose in those organisms for energy. In this example, ...
Evaluating least-cost model predictions with empirical
... Abstract: The loss and fragmentation of forest habitats by human land use are recognised as important factors influencing the decline of forest-dependent fauna. Mammal species that are dependent upon forest habitats are particularly sensitive to habitat loss and fragmentation because they have highl ...
... Abstract: The loss and fragmentation of forest habitats by human land use are recognised as important factors influencing the decline of forest-dependent fauna. Mammal species that are dependent upon forest habitats are particularly sensitive to habitat loss and fragmentation because they have highl ...
Spotted-tailed Quoll: Endangered species
... How do I recognise it? The Spotted-tailed Quoll is the largest marsupial carnivore on mainland Australia. This species generally weighs up to 4kg, although an 8kg individual has been recorded. They have bright eyes and a pointed snout with moist pink nose. The fur on their head and back is red-brown ...
... How do I recognise it? The Spotted-tailed Quoll is the largest marsupial carnivore on mainland Australia. This species generally weighs up to 4kg, although an 8kg individual has been recorded. They have bright eyes and a pointed snout with moist pink nose. The fur on their head and back is red-brown ...
Linking community and ecosystem dynamics through spatial
... Metaecosystems, defined as a set of ecosystems connected by spatial flows of energy, materials and organisms (Loreau et al. 2003), seemingly provide ecologists with the right framework for the reconciliation of trait and material coupling-based approaches of spatial ecosystems. Historically, metaeco ...
... Metaecosystems, defined as a set of ecosystems connected by spatial flows of energy, materials and organisms (Loreau et al. 2003), seemingly provide ecologists with the right framework for the reconciliation of trait and material coupling-based approaches of spatial ecosystems. Historically, metaeco ...
Range fragmentation of the spectacled bear Tremarctos ornatus in
... To estimate potential bear population sizes, we multiplied population densities by the surface area of the habitat blocks. As population density data are unavailable for the spectacled bear, we used data for other species of bear, assuming that ecological similarity justified extrapolation between s ...
... To estimate potential bear population sizes, we multiplied population densities by the surface area of the habitat blocks. As population density data are unavailable for the spectacled bear, we used data for other species of bear, assuming that ecological similarity justified extrapolation between s ...
Meso and Mega-herbivores of Balule
... Vegetation communities are a critical foundation for determining numerous factors about an ecosystem. The health of an ecosystem can be determined by the quality of the vegetation particularly in terms of its function to provide food, shelter and soil stabilising amongst others. Detecting changes in ...
... Vegetation communities are a critical foundation for determining numerous factors about an ecosystem. The health of an ecosystem can be determined by the quality of the vegetation particularly in terms of its function to provide food, shelter and soil stabilising amongst others. Detecting changes in ...
The role of metapopulations in conservation
... Most metapopulations are the regional-scale expression of responses by individuals to patchiness in their habitat. Persistence at the regional level is enhanced if individuals can retain some ability to move across the matrix to prevent local extinctions or to recolonize empty patches. Here we descr ...
... Most metapopulations are the regional-scale expression of responses by individuals to patchiness in their habitat. Persistence at the regional level is enhanced if individuals can retain some ability to move across the matrix to prevent local extinctions or to recolonize empty patches. Here we descr ...
Habitat corridors facilitate genetic resilience irrespective of species
... directly, adding reproduction to the model would not yield additional insights (see Discussion for details regarding the effects of behavior). Dispersal was modeled as a multivariate normal distribution with mean displacement equals to zero. Thus, dispersal was passive and unbiased with respect to d ...
... directly, adding reproduction to the model would not yield additional insights (see Discussion for details regarding the effects of behavior). Dispersal was modeled as a multivariate normal distribution with mean displacement equals to zero. Thus, dispersal was passive and unbiased with respect to d ...
Habitat Loss and Fragmentation
... between habitat and the response of interest (e.g., abundance), and that this ‘‘scale of effect’’ is species specific (Carr and Fahrig, 2001; Holland et al., 2004; Roland and Taylor, 1997; Steffan-Dewenter et al., 2002). Failure to measure habitat at the scale of effect can lead to the erroneous con ...
... between habitat and the response of interest (e.g., abundance), and that this ‘‘scale of effect’’ is species specific (Carr and Fahrig, 2001; Holland et al., 2004; Roland and Taylor, 1997; Steffan-Dewenter et al., 2002). Failure to measure habitat at the scale of effect can lead to the erroneous con ...
ppt
... Blepharisma increases more rapidly and has higher mean abundance when feeding as omnivore; max population was the same Population dynamics of bacterivores vary more in longer food chains except in one case Omnivore abundance varies less than that of nonomnivores at third trophic level Blepharisma sh ...
... Blepharisma increases more rapidly and has higher mean abundance when feeding as omnivore; max population was the same Population dynamics of bacterivores vary more in longer food chains except in one case Omnivore abundance varies less than that of nonomnivores at third trophic level Blepharisma sh ...
Resource Depletion and Habitat Segregation by Competitors Under
... immediately clear whether segregation among the guppies, or the minnows studied by Power et al., might be reestablished over the longer term, as resources are depleted in shallow areas. Below, we explore how resource depletion might result in complete segregation, complete overlap, or some intermedi ...
... immediately clear whether segregation among the guppies, or the minnows studied by Power et al., might be reestablished over the longer term, as resources are depleted in shallow areas. Below, we explore how resource depletion might result in complete segregation, complete overlap, or some intermedi ...
hierarchical analysis of forest bird species
... 1987, Ricklefs 1987). Subdivision and isolation of populations by habitat fragmentation can lead to reduced dispersal success and patch colonization rates that may result in a decline in the persistence of local populations and an enhanced probability of regional extinction for the entire population ...
... 1987, Ricklefs 1987). Subdivision and isolation of populations by habitat fragmentation can lead to reduced dispersal success and patch colonization rates that may result in a decline in the persistence of local populations and an enhanced probability of regional extinction for the entire population ...
Population characteristics
... • Population ecology = investigates the quantitative dynamics of how individuals within a species interact • Community ecology = focuses on interactions among species • Ecosystem ecology = studies living and nonliving components of systems to reveal patterns ...
... • Population ecology = investigates the quantitative dynamics of how individuals within a species interact • Community ecology = focuses on interactions among species • Ecosystem ecology = studies living and nonliving components of systems to reveal patterns ...
Ecology Unit HW
... 5. Describe how habitat fragmentation affects population dynamics 6. Define "source habitat" and "sink habitat" and how these concepts relate to conservation habitats 7. Describe how population viability analysis and estimates of minimum viability size and effective population size are used to evalu ...
... 5. Describe how habitat fragmentation affects population dynamics 6. Define "source habitat" and "sink habitat" and how these concepts relate to conservation habitats 7. Describe how population viability analysis and estimates of minimum viability size and effective population size are used to evalu ...
Sharp-tailed Grouse - Playa Lakes Joint Venture
... locate their nest sites further from buildings, transmission lines, and improved roads than would be expected at random. There is also some evidence that oil and gas wellheads negatively influence nest site selection and habitat use.3,4 Researchers in Oklahoma used radio telemetry to demonstrate tha ...
... locate their nest sites further from buildings, transmission lines, and improved roads than would be expected at random. There is also some evidence that oil and gas wellheads negatively influence nest site selection and habitat use.3,4 Researchers in Oklahoma used radio telemetry to demonstrate tha ...
Habitat Selection and Population Regulation in
... quality forces us to rethink the whole idea of fitness equalization across space because the fitness concept in temporally fluctuating environments is different from the deterministic case (e.g., Metz et al. 1992; Jansen and Yoshimura 1998). Hence, there are operational as well as fundamental reason ...
... quality forces us to rethink the whole idea of fitness equalization across space because the fitness concept in temporally fluctuating environments is different from the deterministic case (e.g., Metz et al. 1992; Jansen and Yoshimura 1998). Hence, there are operational as well as fundamental reason ...
Grazing management benefits cattle and deer
... to keep their operation going. Grazing lands provide forage for livestock, habitat for wildlife and recreational opportunities such as hunting. The assessed value of a ranch based on aesthetics and wildlife habitat or its recreational opportunities can often exceed the property’s agricultural value. ...
... to keep their operation going. Grazing lands provide forage for livestock, habitat for wildlife and recreational opportunities such as hunting. The assessed value of a ranch based on aesthetics and wildlife habitat or its recreational opportunities can often exceed the property’s agricultural value. ...
Chapter 53: Population Ecology
... Label the dispersion pattern shown by each population in the figure below. Second, and most important, what do the dispersion patterns tell us about the population and its interactions? See page 1172 in your text for the labeled figure. The most common pattern of dispersion is clumped, in which indi ...
... Label the dispersion pattern shown by each population in the figure below. Second, and most important, what do the dispersion patterns tell us about the population and its interactions? See page 1172 in your text for the labeled figure. The most common pattern of dispersion is clumped, in which indi ...
Conservation Genetics Inbreeding, Fluctuating Asymmetry, and
... Pedigrees systematically summarize the breeding relationships among a group of individuals. In a pedigree, females are indicated as circles, males by squares. Offspring are indicated by lines joining their parents. Here is an example of half first cousins: ...
... Pedigrees systematically summarize the breeding relationships among a group of individuals. In a pedigree, females are indicated as circles, males by squares. Offspring are indicated by lines joining their parents. Here is an example of half first cousins: ...
Section 4 - Chandler Unified School District / Overview
... • All animals can eat all kinds of things, from plants to animals, from a variety of sources and live in a variety of places. • But they choose to live where they do and eat what they eat. • Why do you think? ...
... • All animals can eat all kinds of things, from plants to animals, from a variety of sources and live in a variety of places. • But they choose to live where they do and eat what they eat. • Why do you think? ...
Seed dispersal by pulp consumers, not ``legitimate`` seed
... (Harper 1977). However, in spite of the large amounts of information on seed dispersal in the literature, there are still significant gaps in our understanding of how frugivore activity translates into demographic and evolutionary consequences for plants (Schupp and Fuentes 1995, Levey et al. 2002). ...
... (Harper 1977). However, in spite of the large amounts of information on seed dispersal in the literature, there are still significant gaps in our understanding of how frugivore activity translates into demographic and evolutionary consequences for plants (Schupp and Fuentes 1995, Levey et al. 2002). ...