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12 Cards in this Set
- Front
- Back
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Biological Extinction
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is forever and represents an irreversible loss of nature capital
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Background Extinction Rate
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Normal extinction of various species as a result of changes in local environmental conditions
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Extinction Rate
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Percentage of number of species that go extinct within a period of time such as a year
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Mass Extinction
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The extinction of many species in a relatively short period of geological time
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Endangered Species
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Wild species with so few individuals left that the species could soon become extinct in all or most of its natural range
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Threatened Species
(or Vulnerable Species) |
Wild species that is still abundant in its natural range but is likely to become endangered species because of a decline in numbers
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HIPPCO
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Acronym used by conservation biologists for the six most important secondary causes of premature extinction: Habitat Destruction, Degradation, and Fragmentation; Invasive (nonnative) species; Population growth and increasing use of resources; Pollution; Climate change; Overxploitation
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Habitat Fragmentation
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Breakup of a habitat into smaller pieces, usually as a result of human activities
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Precautionary Principle
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When there is significant uncertainty about potentially serious harm from chemicals or technologies, decision makers should prevent harem to humans and the enviorment
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Economic Services
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Those services that support our economies. Ex: Various plant species provide economic value as food crops, fuelwood and lumber, paper, and medicine
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Bioprospectors
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They search tropical forests and other ecosystems to find plants and animals that scientists can use to make medicinal drugs
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Ecotourism
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Species diversity also provides economic benefits from wildlife tourism
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