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| Review the formula for effective population size. Imagine a population of 1,000 small rodents. Of these, 300 are breeding females, 300 are breeding males, and 400 are non-breeding juveniles. What is the effective population size. |
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| The discipline that applies ecological principles to returning degraded ecosystems to more natural states is known as... |
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| To date, scientists have roughly how many different organisms? |
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| Which of the following conditions is the most likely indicator of a population in an extinction vortex? |
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Definition
| genetic measurements indicate a continuing loss of a genetic variation |
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| Which of the following is not one of the levels of biodiversity? |
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| human use of prokaryotic organisms to help detoxify a polluted wetland would be an example of |
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| which of the following strategies would most rapidly increase the genetic diversity of a population in an extinction vortex |
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| introduce new individuals transported from other populations of the same species |
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| which of the following terms includes species diversity, genetic diversity, ecosystem diversity and species richness |
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| what integrates ecology, physiology, molecular biology, genetics and evolutionary biology to conserve biological diversity at all levels |
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| according to the small-population approach, what would be the best strategy for saving a population that is in an extinction vortex |
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Definition
| introducing individuals from other populations to increase genetic variation |
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Definition
| unites otherwise isolated patches of quality habitat |
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| estimates of current rates of extinction |
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| indicate that rates may be greater than the mass extinctions at the close of the Cretaceous period |
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| which of the following statements about biodiversity hot spots for plants is correct |
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Definition
| they are locations that have high concentrations of endemic species |
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| what is the estimated number of extant species on Earth |
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Definition
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| one chief area of concern among biologists who use the small-population approach is |
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| approximately what percent of the world's land area has been established as reserves to protect biodiversity |
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| one characteristic that distinguishes a population in an extinction vortex from most other populations is that |
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| its genetic diversity is very low |
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| according to the US endangered Species Act, the difference between an endangered species and a threatened one is that |
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| an endangered species is closer to extinction |
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| overexploitation encourages extinction and is most likely to affect |
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| large animals with low intrinsic reproductive rates |
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| the most serious consequence of a loss in ecosystem biodiversity would be the |
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Definition
| loss of ecosystem services on which people depend |
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| extinction is a natural phenomenon. it is estimated that 99% of all species that ever lived are now extinct. why then do we say that we are now in a biodiversity crisis? |
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| the current rate of extinction is high and human activities threaten biodiversity at all levels |
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| modern conservation science increasingly aims at |
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Definition
| sustaining biodiversity of entire ecosystems and communities |
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| which of the following would be considered an example of bioremediation |
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Definition
| adding seeds of chromium-accumulating plant to soil contaminated by chromium |
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| which of the following would be considered an example of bioremediation |
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| adding seeds of chromium-accumulating plant to soil contaminated by chromium |
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| correct about landscape ecology |
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Definition
| it is the application of ecological principles to land-use planning |
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| modern conservation science increasingly aims at |
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Definition
| sustaining biodiversity of entire ecosystems and communitites |
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| the primary difference between the small-population approach and the declining-population approach to biodiversity recovery is |
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Definition
| S-PA is interested in bolstering the genetic diversity of a threatened population rather than the environmental factors that caused the population's decline |
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