Using golf courses to bolster amphibian communities: University of
... the larvae. Many contaminants appear to have endocrine-disrupting properties, and such effects also may compromise the sustainability of populations if a significant portion of the population is sterile or all one sex. For these reasons, it would be ideal to minimize the potential for ponds to be ex ...
... the larvae. Many contaminants appear to have endocrine-disrupting properties, and such effects also may compromise the sustainability of populations if a significant portion of the population is sterile or all one sex. For these reasons, it would be ideal to minimize the potential for ponds to be ex ...
THE Biosphere Student Copy
... All of the deserts and grasslands have similar landforms and soils. Describe those two factors. What do you think would happen if the climate’s temperatures began to increase in the cold desert? How will the boreal forest become compromised if the precipitation changed? What would occur if the biodi ...
... All of the deserts and grasslands have similar landforms and soils. Describe those two factors. What do you think would happen if the climate’s temperatures began to increase in the cold desert? How will the boreal forest become compromised if the precipitation changed? What would occur if the biodi ...
ClsI eEl eEl - Competitive Enterprise Institute
... For several years now, the World Wildlife Fund and other wildlife interest groups have been saying such things as, "Without firing a shot, we may kill one-fifth of all species of life on this planet within the next ...
... For several years now, the World Wildlife Fund and other wildlife interest groups have been saying such things as, "Without firing a shot, we may kill one-fifth of all species of life on this planet within the next ...
Diversity effects beyond species richness: evidence from intertidal macroalgal assemblages Francisco Arenas
... positive relationship for biomass and species richness. Additionally, we found significant statistical relationships between both spatial aggregation and evenness and some of the productivity-related variables analyzed: assemblages with a higher degree of spatial aggregation reduced their light capt ...
... positive relationship for biomass and species richness. Additionally, we found significant statistical relationships between both spatial aggregation and evenness and some of the productivity-related variables analyzed: assemblages with a higher degree of spatial aggregation reduced their light capt ...
Ecosystem Changes, Biodiversity Loss and Human Well
... perturbation, that benefit from nutrient loadings, etc.). An identical result is observed in the case of invasive species that, in the absence of predators, pathogens, or competitors, become dominant, leading to the reduction or even extinction of native populations. As a consequence, biotic communi ...
... perturbation, that benefit from nutrient loadings, etc.). An identical result is observed in the case of invasive species that, in the absence of predators, pathogens, or competitors, become dominant, leading to the reduction or even extinction of native populations. As a consequence, biotic communi ...
Qualitative Insight Into Public Knowledge of, and
... wrongly attributed. In a study of Illinois residents, Mankin et al. (1999) found that statewide declines in wildlife are often incorrectly attributed to hunting, rather than to the true underlying cause, habitat alteration. They argue that residents may have been sensitized by the media to global tr ...
... wrongly attributed. In a study of Illinois residents, Mankin et al. (1999) found that statewide declines in wildlife are often incorrectly attributed to hunting, rather than to the true underlying cause, habitat alteration. They argue that residents may have been sensitized by the media to global tr ...
turkey, quail, and predators in the rolling plains, texas
... and raccoons (Procyon lotor) do kill substantial numbers of turkey (Meleagris gallopavo) and quail (Colinus virginianus). This leads one to ask whether there are fewer birds to harvest because of this predation and whether predator control could increase harvestable stocks. Predator control can be e ...
... and raccoons (Procyon lotor) do kill substantial numbers of turkey (Meleagris gallopavo) and quail (Colinus virginianus). This leads one to ask whether there are fewer birds to harvest because of this predation and whether predator control could increase harvestable stocks. Predator control can be e ...
Ch11 Lecture 1.competition
... It also releases a toxin called catechin into surrounding soils, which has been shown to reduce germination and growth of native grasses. Cattle do not eat spotted knapweed, giving it an edge over native plants that cattle do eat. ...
... It also releases a toxin called catechin into surrounding soils, which has been shown to reduce germination and growth of native grasses. Cattle do not eat spotted knapweed, giving it an edge over native plants that cattle do eat. ...
document
... ecological complexes of which they are part, including the diversity within species, between species and of ecosystems.’ • Biodiversity is the variety of life on Earth and the essential interdependence of all living things • Scientists have identified more than 2 million species. Tens of millions -- ...
... ecological complexes of which they are part, including the diversity within species, between species and of ecosystems.’ • Biodiversity is the variety of life on Earth and the essential interdependence of all living things • Scientists have identified more than 2 million species. Tens of millions -- ...
Modelling macroevolutionary patterns: An
... throughout the Phanerozoic and any theory of macroevolution should incorporate them. The end-Cretaceous event (K/T) is particularly well known and is consistent with a high-energy asteroid impact which generated severe darkening with a temporal cesation of photosynthetic activity on a very large sca ...
... throughout the Phanerozoic and any theory of macroevolution should incorporate them. The end-Cretaceous event (K/T) is particularly well known and is consistent with a high-energy asteroid impact which generated severe darkening with a temporal cesation of photosynthetic activity on a very large sca ...
Unit 2 Homework Sheet
... Be able to convert any units given a conversion factor. In two words: dimensional analysis. Remember you WON’T be able to use a calculator (rounding always helps). What is a system? Give two reasons why models of systems are important in the environmental sciences. What is synergy? What effect does ...
... Be able to convert any units given a conversion factor. In two words: dimensional analysis. Remember you WON’T be able to use a calculator (rounding always helps). What is a system? Give two reasons why models of systems are important in the environmental sciences. What is synergy? What effect does ...
Trophic cascades in terrestrial ecosystems. Reflections on
... length) to gauge shifts in plant communities, including invasions from larger regional species pools of both plants and herbivores? If trophic cascades are ubiquitous, there should be large impacts of increased herbivory in these ecosystems dominated by vegetarian consumers. If not, then everything ...
... length) to gauge shifts in plant communities, including invasions from larger regional species pools of both plants and herbivores? If trophic cascades are ubiquitous, there should be large impacts of increased herbivory in these ecosystems dominated by vegetarian consumers. If not, then everything ...
Preview Sample 2
... are a favorite food of immigrants from China, and live fish can frequently be found in Asian markets. It's suspected that the fish in the Crofton pond were purchased locally and then intentionally released. Snakeheads are top predators, and 90% of the northern snakeheads' diet consists of other fish ...
... are a favorite food of immigrants from China, and live fish can frequently be found in Asian markets. It's suspected that the fish in the Crofton pond were purchased locally and then intentionally released. Snakeheads are top predators, and 90% of the northern snakeheads' diet consists of other fish ...
Kelp Forest
... More importantly kelps are the “power house” of an important food chain. Not only do they provide food directly, but as they die they decay and provide nutrients for plankton and filter feeders, which in turn are eaten by higher animals, which again are eaten by other predators and so on. Without t ...
... More importantly kelps are the “power house” of an important food chain. Not only do they provide food directly, but as they die they decay and provide nutrients for plankton and filter feeders, which in turn are eaten by higher animals, which again are eaten by other predators and so on. Without t ...
Land Use, Biodiversity, and Ecosystem Integrity
... for all major habitat categories in the United States, assessing loss and degradation of U.S. ecosystems, is noteworthy for its broad scope and the fine level of disaggregation with which it treats habitat types and locations.' At the same time, the study acknowledges that the information needed to ...
... for all major habitat categories in the United States, assessing loss and degradation of U.S. ecosystems, is noteworthy for its broad scope and the fine level of disaggregation with which it treats habitat types and locations.' At the same time, the study acknowledges that the information needed to ...
A Biodiversity Primer for Ontario
... can be so difficult to rehabilitate. And once you get below a certain number of individuals, based on reproductive potential, it is effectively impossible. Genetic variation is the cornerstone of all biodiversity. Population diversity. While we often talk about species, what we generally see and int ...
... can be so difficult to rehabilitate. And once you get below a certain number of individuals, based on reproductive potential, it is effectively impossible. Genetic variation is the cornerstone of all biodiversity. Population diversity. While we often talk about species, what we generally see and int ...
application for
... Subject to law - proposal to translocate aquatic resources into and within South Australia must comply with relevant State and Commonwealth laws. A species will only be considered as a candidate for translocation if possession of the species does not conflict with the restrictions imposed under the ...
... Subject to law - proposal to translocate aquatic resources into and within South Australia must comply with relevant State and Commonwealth laws. A species will only be considered as a candidate for translocation if possession of the species does not conflict with the restrictions imposed under the ...
BCS311 Module 5
... producers than plants and algae, many ecologists prefer to use the synonyms primary consumer or first order consumer. Similarly, the term carnivore, which means “meat eater” may be substituted by secondary consumer. However, some carnivores hunt herbivores while some hunt other carnivores. That is w ...
... producers than plants and algae, many ecologists prefer to use the synonyms primary consumer or first order consumer. Similarly, the term carnivore, which means “meat eater” may be substituted by secondary consumer. However, some carnivores hunt herbivores while some hunt other carnivores. That is w ...
Scholarship Biology (93101) 2013
... pigs, sheep, and horses, though they will also feed on the bodies of smaller mammals such as rabbits and coyotes. ...
... pigs, sheep, and horses, though they will also feed on the bodies of smaller mammals such as rabbits and coyotes. ...
What is Biodiversity?
... Rice fields and irrigation ponds have been habitats for plants and animals that favor wetlands and waterfronts. Trees cleared to make charcoal or firewood left room for organisms that thrive in sunlight. This interaction between human and nature created a habitat called satoyama that has been home t ...
... Rice fields and irrigation ponds have been habitats for plants and animals that favor wetlands and waterfronts. Trees cleared to make charcoal or firewood left room for organisms that thrive in sunlight. This interaction between human and nature created a habitat called satoyama that has been home t ...
Biological Goals and Objectives
... biological goals and objectives can be used to measure how well BDCP is meeting the goal of ecosystem restoration. Biological goals articulate the broad, intended outcomes of the plan. Biological objectives are specific, measurable outcomes expected as a result of the Plan. Conservation Measures are ...
... biological goals and objectives can be used to measure how well BDCP is meeting the goal of ecosystem restoration. Biological goals articulate the broad, intended outcomes of the plan. Biological objectives are specific, measurable outcomes expected as a result of the Plan. Conservation Measures are ...
Indicators of Biodiversity for Ecologically Sustainable Forest
... There are differences among species in diet, body size, habitat requirements, nest tree use, mating system, and other life-history characteristics (Lindenmayer 1997). One of the key habitat requirements for virtually all species of arboreal marsupials is hollow trees, which are used as nest and den ...
... There are differences among species in diet, body size, habitat requirements, nest tree use, mating system, and other life-history characteristics (Lindenmayer 1997). One of the key habitat requirements for virtually all species of arboreal marsupials is hollow trees, which are used as nest and den ...
Endangered Species Act Basics – with a Focus on Kentucky
... shoot, wound, kill, trap, capture, or collect or attempt to engage in any such conduct.” Through regulation, the term “harm” was later defined as “an act which actually kills or injures wildlife. Such an act may include significant habitat modification or degradation where it actually kills or injur ...
... shoot, wound, kill, trap, capture, or collect or attempt to engage in any such conduct.” Through regulation, the term “harm” was later defined as “an act which actually kills or injures wildlife. Such an act may include significant habitat modification or degradation where it actually kills or injur ...
Jaguar Population Dynamics
... if a jaguar attacks one a farmer will shoot it on the stop making it become the predator. Jaguars interact a lot with the species below it in the food chain. However if a population below it changes it will severely affect the populations at the top being the jaguar. One of the biggest influences fr ...
... if a jaguar attacks one a farmer will shoot it on the stop making it become the predator. Jaguars interact a lot with the species below it in the food chain. However if a population below it changes it will severely affect the populations at the top being the jaguar. One of the biggest influences fr ...
Overexploitation
Overexploitation, also called overharvesting, refers to harvesting a renewable resource to the point of diminishing returns. Sustained overexploitation can lead to the destruction of the resource. The term applies to natural resources such as: wild medicinal plants, grazing pastures, game animals, fish stocks, forests, and water aquifers.In ecology, overexploitation describes one of the five main activities threatening global biodiversity. Ecologists use the term to describe populations that are harvested at a rate that is unsustainable, given their natural rates of mortality and capacities for reproduction. This can result in extinction at the population level and even extinction of whole species. In conservation biology the term is usually used in the context of human economic activity that involves the taking of biological resources, or organisms, in larger numbers than their populations can withstand. The term is also used and defined somewhat differently in fisheries, hydrology and natural resource management.Overexploitation can lead to resource destruction, including extinctions. However it is also possible for overexploitation to be sustainable, as discussed below in the section on fisheries. In the context of fishing, the term overfishing can be used instead of overexploitation, as can overgrazing in stock management, overlogging in forest management, overdrafting in aquifer management, and endangered species in species monitoring. Overexploitation is not an activity limited to humans. Introduced predators and herbivores, for example, can overexploit native flora and fauna.