Enemy free space and the structure of ecological
... between these definitions are unimportant. Ecologists use the niche concept in its broadest sense to discuss a number of questions. Are there limits to the number of co-existing species in communities, i.e. are there limits to niche-space and niche-overlap? How and why do species differ in their use ...
... between these definitions are unimportant. Ecologists use the niche concept in its broadest sense to discuss a number of questions. Are there limits to the number of co-existing species in communities, i.e. are there limits to niche-space and niche-overlap? How and why do species differ in their use ...
Miller, B., B. Dugelby, D. Foreman, C. Martinex del Rio, R. Noss, M
... How carnivores impact ecosystem health When people discuss ecological interactions that determine abundance, distribution, and diversity across trophic levels, they often talk about top-down or bottom-up control. In the ecological sense, control means a qualitative or quantitative effect on ecosyste ...
... How carnivores impact ecosystem health When people discuss ecological interactions that determine abundance, distribution, and diversity across trophic levels, they often talk about top-down or bottom-up control. In the ecological sense, control means a qualitative or quantitative effect on ecosyste ...
5 THE ECOLOGICAL NICHES OF LEPTOSPERMUM SCOPAR/UM
... plant species to coexist when resources are limited are expressed in their morphology, but others, resulting from physiological differences, are cryptic. Plants have evolved in communities and it may be assumed that natural selection has caused divergences which minimize competition. The possession ...
... plant species to coexist when resources are limited are expressed in their morphology, but others, resulting from physiological differences, are cryptic. Plants have evolved in communities and it may be assumed that natural selection has caused divergences which minimize competition. The possession ...
Assisted colonization as a climate change adaptation tool
... disturbance regimes and changes to soil, hydrological and other conditions, altering both biotic and abiotic interactions (Fischer & Lindenmayer 2007). In addition, these modified habitats generally preclude effective species migration and gene flow by fragmenting populations among a matrix of land- ...
... disturbance regimes and changes to soil, hydrological and other conditions, altering both biotic and abiotic interactions (Fischer & Lindenmayer 2007). In addition, these modified habitats generally preclude effective species migration and gene flow by fragmenting populations among a matrix of land- ...
Wildlife Habitat Requirements overview INSTRUCTOR: UNIT
... A wildlife manager sees the importance of plants in an ecosystem. Reduction of plants may be due to overgrazing or drought. It may be necessary to replant to strengthen a plant community. Native plants should be the first choice of the wildlife manager. They already have adapted to the type of weath ...
... A wildlife manager sees the importance of plants in an ecosystem. Reduction of plants may be due to overgrazing or drought. It may be necessary to replant to strengthen a plant community. Native plants should be the first choice of the wildlife manager. They already have adapted to the type of weath ...
Assessing the health of European rivers using
... to river continuum concept, Vannote, Minshall, Cummins, Sedell & Cushing 1980). Within this, any changes in, or disturbance to, the functionality and structure of the riverine habitat will be reflected by responses in the functional structure of the fish community. Multi-metric indices comprise a numb ...
... to river continuum concept, Vannote, Minshall, Cummins, Sedell & Cushing 1980). Within this, any changes in, or disturbance to, the functionality and structure of the riverine habitat will be reflected by responses in the functional structure of the fish community. Multi-metric indices comprise a numb ...
Thresholds of Potential Concern - Learning Center of the American
... arbitrary levels based on the best available information (Whyte et al. 1999). In some cases, there was insufficient information to have a clear vision of what level of elephantinduced change is acceptable (Whyte et al. 2003). Thus, is fully anticipated that TPCs will be revised and refined as ...
... arbitrary levels based on the best available information (Whyte et al. 1999). In some cases, there was insufficient information to have a clear vision of what level of elephantinduced change is acceptable (Whyte et al. 2003). Thus, is fully anticipated that TPCs will be revised and refined as ...
Rutgers Model United Nations 4 - Institute for Domestic and
... humans; however, human influence continually disturbs natural biodiversity at an increasing rate. In 1992, one hundred and fifty states signed the Convention on Biological Diversity, in order to have a global agreement on the conservation and sustainable use of biological diversity. The treaty’s thr ...
... humans; however, human influence continually disturbs natural biodiversity at an increasing rate. In 1992, one hundred and fifty states signed the Convention on Biological Diversity, in order to have a global agreement on the conservation and sustainable use of biological diversity. The treaty’s thr ...
What`s Inside . . . Controlling Predators, or Controlling Predation?
... and Predation As these questions indicate, separating predation from habitat quality is not easy. Therefore, we set out to test one against the other during a four-year study. Research by Marc Puckett showed that field borders along drainage ditches in the Alligator River National Wildlife Refuge at ...
... and Predation As these questions indicate, separating predation from habitat quality is not easy. Therefore, we set out to test one against the other during a four-year study. Research by Marc Puckett showed that field borders along drainage ditches in the Alligator River National Wildlife Refuge at ...
Reconciling Ecosystems: Reversing Declines in Native Species
... can guide water resource design, implementation, and operation, leading to better stewardship of the environment (Arthington et al. 2009). Systematic evaluation of services improves the analysis of tradeoffs and complementarities among alternative uses of ecosystems by a wide range of stakeholders. ...
... can guide water resource design, implementation, and operation, leading to better stewardship of the environment (Arthington et al. 2009). Systematic evaluation of services improves the analysis of tradeoffs and complementarities among alternative uses of ecosystems by a wide range of stakeholders. ...
Disentangling the effects of water and nutrients for studying the
... environmental conditions in order to also indirectly assess variations in neighbour effects. Due to the lack of studies with similar goals, we do not have any a priori hypotheses on variations in the outcomes of interactions in this experiment with alleviation of water and/or nutrient stresses. None ...
... environmental conditions in order to also indirectly assess variations in neighbour effects. Due to the lack of studies with similar goals, we do not have any a priori hypotheses on variations in the outcomes of interactions in this experiment with alleviation of water and/or nutrient stresses. None ...
Patterns of species diversity and phylogenetic structure of vascular
... present in the grid when both its horizontal (county) and vertical (elevation range) distribution was included in the grid. Some grids contained more than one county; therefore, conversion only based on horizontal distribution might enlarge the distribution range of the species. However, this bias h ...
... present in the grid when both its horizontal (county) and vertical (elevation range) distribution was included in the grid. Some grids contained more than one county; therefore, conversion only based on horizontal distribution might enlarge the distribution range of the species. However, this bias h ...
Should Extinction Be Forever
... introductions have sometimes been proposed so these species can provide essential ecosystem services or species interactions lost with extinctions. In an effort to restore ecosystem services lost with the extinction of North American megafauna 13,000 years ago, some have even suggested introducing l ...
... introductions have sometimes been proposed so these species can provide essential ecosystem services or species interactions lost with extinctions. In an effort to restore ecosystem services lost with the extinction of North American megafauna 13,000 years ago, some have even suggested introducing l ...
Appalachian Corridor News
... urban plan is innovative in that the new set of rules adopted also proposes tools essential to a development which respects the environment. It includes, among others, rules about high altitude zones and wetlands. South-Stukely received a Reconnaissance Award, in recognition for a project aiming at ...
... urban plan is innovative in that the new set of rules adopted also proposes tools essential to a development which respects the environment. It includes, among others, rules about high altitude zones and wetlands. South-Stukely received a Reconnaissance Award, in recognition for a project aiming at ...
Concepts of disturbance, colonization and early development or
... There are several tests that need to be conducted in order to properly evaluate intermediate levels of disturbance. Researchers must first hypothesize new ideas corresponding to their data. Before a natural disturbance alters the species richness within the community, researchers must count all viab ...
... There are several tests that need to be conducted in order to properly evaluate intermediate levels of disturbance. Researchers must first hypothesize new ideas corresponding to their data. Before a natural disturbance alters the species richness within the community, researchers must count all viab ...
chapter 55
... 3. Nature reserves must be functional parts of landscapes • It is important that they are not isolated from the natural environment. • Several nations have adopted an approach to landscape management called zoned reserve systems. • A zoned reserve is a large region of land that includes one or more ...
... 3. Nature reserves must be functional parts of landscapes • It is important that they are not isolated from the natural environment. • Several nations have adopted an approach to landscape management called zoned reserve systems. • A zoned reserve is a large region of land that includes one or more ...
Nerve activates contraction
... 3. Nature reserves must be functional parts of landscapes • It is important that they are not isolated from the natural environment. • Several nations have adopted an approach to landscape management called zoned reserve systems. • A zoned reserve is a large region of land that includes one or more ...
... 3. Nature reserves must be functional parts of landscapes • It is important that they are not isolated from the natural environment. • Several nations have adopted an approach to landscape management called zoned reserve systems. • A zoned reserve is a large region of land that includes one or more ...
99. Woodruff, D.S. The problems of conserving genes and species
... Although the majority of organisms still persist without human intervention, the ranks of those that depend on us for their survival are increasing rapidly. The technologies-broadly defined to include management systems and other means by which knowledge is appliedused to conserve species have been ...
... Although the majority of organisms still persist without human intervention, the ranks of those that depend on us for their survival are increasing rapidly. The technologies-broadly defined to include management systems and other means by which knowledge is appliedused to conserve species have been ...
The Northern Tall Grass Prairie
... The Northern Tallgrass Prairie physiographic area occupies the eastern portion of the Prairie Pothole Region, the most important waterfowl production area of North America. While very little of the area’s native vegetation is left, active habitat restoration and enhancement for waterfowl conservatio ...
... The Northern Tallgrass Prairie physiographic area occupies the eastern portion of the Prairie Pothole Region, the most important waterfowl production area of North America. While very little of the area’s native vegetation is left, active habitat restoration and enhancement for waterfowl conservatio ...
Environmental proteomics, biodiversity statistics
... Pioneering studies in environmental proteomics have revealed links between protein diversity and ecological function in simple ecological communities, such as microbial biofilms. In the near future, high-throughput proteomic methods will be applied to more complex ecological systems in which microbe ...
... Pioneering studies in environmental proteomics have revealed links between protein diversity and ecological function in simple ecological communities, such as microbial biofilms. In the near future, high-throughput proteomic methods will be applied to more complex ecological systems in which microbe ...
Has The Human Species Become A Cancer On The Planet
... that this is “interest” compounded, not annually, but minute-to-minute, second-tosecond, meaning that 178 persons are added each minute, three per second. That is net increase after deaths are subtracted from births. It should also be remembered that the estimates of total population and growth rate ...
... that this is “interest” compounded, not annually, but minute-to-minute, second-tosecond, meaning that 178 persons are added each minute, three per second. That is net increase after deaths are subtracted from births. It should also be remembered that the estimates of total population and growth rate ...
natural habitats
... approach may be to consider the degree to which an area has remained unaltered or unmanaged over a period of time. Generally, the more pristine and less disturbed a natural area is, the better will be its capacity for representation and maintenance of biodiversity. Undisturbed areas can also act as ...
... approach may be to consider the degree to which an area has remained unaltered or unmanaged over a period of time. Generally, the more pristine and less disturbed a natural area is, the better will be its capacity for representation and maintenance of biodiversity. Undisturbed areas can also act as ...
Management strategies for plant invasions: manipulating
... concept is that communities with higher species diversity should be more resistant to invaders. However, most recently published field data contradict this theory, finding instead that areas with high native plant diversity also have high exotic plant diversity. An alternative environment-based appr ...
... concept is that communities with higher species diversity should be more resistant to invaders. However, most recently published field data contradict this theory, finding instead that areas with high native plant diversity also have high exotic plant diversity. An alternative environment-based appr ...
Reconciliation ecology
Reconciliation ecology is the branch of ecology which studies ways to encourage biodiversity in human-dominated ecosystems. Michael Rosenzweig first articulated the concept in his book Win-Win Ecology, based on the theory that there is not enough area for all of earth’s biodiversity to be saved within designated nature preserves. Therefore, humans should increase biodiversity in human-dominated landscapes. By managing for biodiversity in ways that do not decrease human utility of the system, it is a ""win-win"" situation for both human use and native biodiversity. The science is based in the ecological foundation of human land-use trends and species-area relationships. It has many benefits beyond protection of biodiversity, and there are numerous examples of it around the globe. Aspects of reconciliation ecology can already be found in management legislation, but there are challenges in both public acceptance and ecological success of reconciliation attempts.