Environmental heterogeneity, species diversity and
... occurring at large spatial scales (Pickett & Bazzaz 1978; Ackerly & Cornwell 2007). Spatial heterogeneity occurs simultaneously at different scales. At larger spatial scales, heterogeneity is expressed mainly as gradients of environmental factors. Individual patches within communities, which can infl ...
... occurring at large spatial scales (Pickett & Bazzaz 1978; Ackerly & Cornwell 2007). Spatial heterogeneity occurs simultaneously at different scales. At larger spatial scales, heterogeneity is expressed mainly as gradients of environmental factors. Individual patches within communities, which can infl ...
Translocation strategies for multiple species depend on interspecific
... Key words: assisted migration; coextinction; competition; conservation introduction; consumer–resource system; mitigation translocation; mutualism; reintroduction; restoration. ...
... Key words: assisted migration; coextinction; competition; conservation introduction; consumer–resource system; mitigation translocation; mutualism; reintroduction; restoration. ...
Unveiling a mechanism for species decline in fragmented habitats
... those studied in the context of tropical forests [15]—may be responsible for the above-mentioned decline. Among them, we can cite: (i) species that are overly sensitive to habitat size; (ii) a lower genetic variability associated with a smaller number of individuals living in fragments (thus decreas ...
... those studied in the context of tropical forests [15]—may be responsible for the above-mentioned decline. Among them, we can cite: (i) species that are overly sensitive to habitat size; (ii) a lower genetic variability associated with a smaller number of individuals living in fragments (thus decreas ...
Comments
... valid, we believe that this study has serious flaws and claims differences between venues that erroneously devalue the use of mesocosms. Our goal is to reinterpret the results from Skelly (2002) in light of its design, point out methodological/statistical issues associated with his study, and argue ...
... valid, we believe that this study has serious flaws and claims differences between venues that erroneously devalue the use of mesocosms. Our goal is to reinterpret the results from Skelly (2002) in light of its design, point out methodological/statistical issues associated with his study, and argue ...
Habitat and habitat selection: theory, tests, and implications.
... promise for quickly gauging habitat suitability. The litmus test will be when we evaluate whether these methods predict habitat quality in natural populations and whether habitat suitability is linked to fitness in free-ranging animals. Ecologists usually assume implicitly that natural selection has ...
... promise for quickly gauging habitat suitability. The litmus test will be when we evaluate whether these methods predict habitat quality in natural populations and whether habitat suitability is linked to fitness in free-ranging animals. Ecologists usually assume implicitly that natural selection has ...
Weighting and indirect effects identify keystone species in food webs
... to various extinction scenarios. Link weight and/or indirect effects had stronger effects on foodweb stability than the simple removal of ‘hubs’, demonstrating that both quantitative fluxes and species dissipating their effects across many links should be of great concern in biodiversity conservatio ...
... to various extinction scenarios. Link weight and/or indirect effects had stronger effects on foodweb stability than the simple removal of ‘hubs’, demonstrating that both quantitative fluxes and species dissipating their effects across many links should be of great concern in biodiversity conservatio ...
Ecological Role of Predators - National Wolfwatcher Coalition
... apex of trophic systems. Changes to their populations reverberate through ecological communities; consequently their widespread decline in numbers and shrinking distribution due to human persecution has brought about a loss and reconfiguration of biological diversity in many systems. Although many la ...
... apex of trophic systems. Changes to their populations reverberate through ecological communities; consequently their widespread decline in numbers and shrinking distribution due to human persecution has brought about a loss and reconfiguration of biological diversity in many systems. Although many la ...
8 Conflicts over biodiversity
... it is not only the loss of species per se that is worrying, it is particularly the destruction and alteration of their habitats which is crucially important. Loss of habitat area and habitat diversity reduces the Earth's capacity to support viable populations. Indeed, the primary cause of biodiversi ...
... it is not only the loss of species per se that is worrying, it is particularly the destruction and alteration of their habitats which is crucially important. Loss of habitat area and habitat diversity reduces the Earth's capacity to support viable populations. Indeed, the primary cause of biodiversi ...
as a File
... can’t see much of the undersea beauty of the Gulf. With much of that activity in the Gulf underwater and out of sight, we must imagine what we cannot directly see and estimate what we cannot directly count. Unfortunately, this underwater ecosystem is far from idyllic. A dramatic story is unfolding i ...
... can’t see much of the undersea beauty of the Gulf. With much of that activity in the Gulf underwater and out of sight, we must imagine what we cannot directly see and estimate what we cannot directly count. Unfortunately, this underwater ecosystem is far from idyllic. A dramatic story is unfolding i ...
figure 3 koala habitat map - Roads and Maritime Services
... are more vulnerable to degradation, provide less habitat and may be subject to higher levels of threat, such as from predatory or territorial edge species. Option IS2, however, passes via a tunnel under a larger, wider remnant of bushland (See Section 2.1, Figure 2), which is approximately 240 m wid ...
... are more vulnerable to degradation, provide less habitat and may be subject to higher levels of threat, such as from predatory or territorial edge species. Option IS2, however, passes via a tunnel under a larger, wider remnant of bushland (See Section 2.1, Figure 2), which is approximately 240 m wid ...
ECOSYSTEM
... 21. How the standing crop is is measured? The standing crop is measured as the mass of living organisms (biomass) or the number in a unit area 22. What is 10% law? The number of trophic levels in the grazing food chain is restricted as the transfer of energy follows 10 per cent law – only 10 per cen ...
... 21. How the standing crop is is measured? The standing crop is measured as the mass of living organisms (biomass) or the number in a unit area 22. What is 10% law? The number of trophic levels in the grazing food chain is restricted as the transfer of energy follows 10 per cent law – only 10 per cen ...
Nature of Science and Ecology Jeopardy
... trophic level has the most energy? What percentage of energy moves on to the next trophic level? What happens to the the energy that is not used for life processes or passed to the next level? ...
... trophic level has the most energy? What percentage of energy moves on to the next trophic level? What happens to the the energy that is not used for life processes or passed to the next level? ...
Chapter 8 Behavioral Ecology
... Ritualized pattern evolved because the fitness of the species depends on protecting important members from lethal combat that would deprive them of the opportunity to pass on their genes. 或許可以用 Group selection argument. 但是 the advantage for the group is different from what is advantageous for the in ...
... Ritualized pattern evolved because the fitness of the species depends on protecting important members from lethal combat that would deprive them of the opportunity to pass on their genes. 或許可以用 Group selection argument. 但是 the advantage for the group is different from what is advantageous for the in ...
SFEG Annual Report 2001-2002 - Skagit Fisheries Enhancement
... Native Plant Nursery: SFEG volunteers watered, weeded, maintained, transplanted and potted native plants at SFEG’s nursery to produce a higher quality plant in greater quantities than what is available at local nurseries. The native plant growing operation enables SFEG to use plants at any time duri ...
... Native Plant Nursery: SFEG volunteers watered, weeded, maintained, transplanted and potted native plants at SFEG’s nursery to produce a higher quality plant in greater quantities than what is available at local nurseries. The native plant growing operation enables SFEG to use plants at any time duri ...
PDF
... LEPS Langley Environmental Partners Society LEPS Facts Through direct restoration activity, public education, and by serving as a resource for environmental and community groups, LEPS aims to protect and restore the natural environment of Langley and the Fraser Valley and foster balanced and sustain ...
... LEPS Langley Environmental Partners Society LEPS Facts Through direct restoration activity, public education, and by serving as a resource for environmental and community groups, LEPS aims to protect and restore the natural environment of Langley and the Fraser Valley and foster balanced and sustain ...
Persistence and flow reliability in simple food webs
... Twenty-five model food webs can be designed from five points (species) and five links (trophic interactions), if they contain a single top-predator (i.e. sink webs). According to a simple topological approach, we presented elsewhere a reliability theoretical analysis of this set of food web graphs. ...
... Twenty-five model food webs can be designed from five points (species) and five links (trophic interactions), if they contain a single top-predator (i.e. sink webs). According to a simple topological approach, we presented elsewhere a reliability theoretical analysis of this set of food web graphs. ...
Conservation Assessment for the Red-Tailed Chipmunk
... its habitat in the westernmost edge of its distribution in northeastern Washington. Scope I found only limited information regarding the distribution and ecology of red-tailed chipmunks in Washington. Therefore, I draw on accounts of the species from its entire range. There is no information regardi ...
... its habitat in the westernmost edge of its distribution in northeastern Washington. Scope I found only limited information regarding the distribution and ecology of red-tailed chipmunks in Washington. Therefore, I draw on accounts of the species from its entire range. There is no information regardi ...
Appendix 1. Revision of the questions on the environmental impact
... Note 1: The word “native” in “native species” or “native biodiversity” throughout Questions 6.08 and 6.09 should be understood in a broad sense, i.e. it should also include species that have been naturalised for centuries and that play an important role in the ecosystems or local cultural heritage, ...
... Note 1: The word “native” in “native species” or “native biodiversity” throughout Questions 6.08 and 6.09 should be understood in a broad sense, i.e. it should also include species that have been naturalised for centuries and that play an important role in the ecosystems or local cultural heritage, ...
Initial Plant Growth in Sand Mine Spoil Amended with Peat Moss
... We chose spoil amendments based on their ability to improve soil quality through nutrient additions (fertilizer) and soil water retention ( peat moss). Soil nitrogen is particularly important in the reestablishment of degraded plant communities because it enhances the capacity of the ecosystem to su ...
... We chose spoil amendments based on their ability to improve soil quality through nutrient additions (fertilizer) and soil water retention ( peat moss). Soil nitrogen is particularly important in the reestablishment of degraded plant communities because it enhances the capacity of the ecosystem to su ...
Ecology
... Why are the cycles important? How do organisms interact with each other? How can we show trends in populations over time? ...
... Why are the cycles important? How do organisms interact with each other? How can we show trends in populations over time? ...
Preston et al. 2012 comm invasions
... 2005). Disentangling interactions among multiple invaders within native communities becomes even more challenging when nonnative species occur simultaneously with other types of environmental change, which can facilitate invaders or directly alter community structure (MacDougall and Turkington 2005) ...
... 2005). Disentangling interactions among multiple invaders within native communities becomes even more challenging when nonnative species occur simultaneously with other types of environmental change, which can facilitate invaders or directly alter community structure (MacDougall and Turkington 2005) ...
Restoration ecology
Restoration ecology emerged as a separate field in ecology in the 1980s. It is the scientific study supporting the practice of ecological restoration, which is the practice of renewing and restoring degraded, damaged, or destroyed ecosystems and habitats in the environment by active human intervention and action. The term ""restoration ecology"" is therefore commonly used for the academic study of the process, whereas the term ""ecological restoration"" is commonly used for the actual project or process by restoration practitioners.