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Maximum Sustainable Yield
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Definition
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•the largest amount of harvesting which allows ecosystems/species to replenish itself before the next harvest
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Term
| Totally Allowable Catch (TAC) |
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Definition
| In fisheries management, a yearly quota set for the harvest of a species by managers of fisheries |
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Term
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Definition
| A system of fishery management wherein a quota is set & individual fishers are given or sold the right to harvest some proportion of the quota. also called catch shares |
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Term
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Definition
| the food, fuel, wood, fibers, oils, alcohols, & the like derived from the natural world, on which the world economy and human well-being depend |
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Term
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Definition
| functions performed free of charged by natural ecosystems, such as control of runoff & erosion, absorption of nutrients, & assimilation of air pollutants |
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Term
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Definition
| features of natural ecosystems and species that are of economic value and that may be exploited. Also, features of particular segments of ecosystems, such as air, water, soil, and minerals |
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Term
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Definition
| Biological resources, such as trees, that may be renewed by reporduction and regrowth. Conservation to prevent overcutting and to protect the enviroment is still required. |
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Term
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Definition
| The management of a resource in such a way as to asssure that it will continue to provide maximum benefit to humans over the long run. |
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Term
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Definition
| In protecting natural areas, the objective ofpreservation is to ensure the continuity of a species and ecosystems, reguardless of their potential utility |
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Term
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Definition
| The harvesting of natural resources in order to provide for peoples immediate needs for food, shelter, fuel, and clothing |
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Term
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Definition
| The exploition of ecosystems resources for economic gain |
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Term
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Definition
| The population of a harvested biological resource that yields the greatest harvest for exploitation; according to maximum-sustained-yeild equations, the optimal population is half the carrying capacity. |
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Term
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Definition
| the principle that says that where are threats of serious or irrreversible damage, the absense of scientific certainy shall not be used as a reason for post-poning cost-effective measures to prevent environmental degration. |
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Term
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Definition
| resources owned by many people in common or, as in the case of the air or open oceans, owned by no one but open to the exploitation |
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Term
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Definition
| the management paradigm, adopted by all federal agencies managing public lands, that invovles a longterm stewardship approach to maintaining the lands in their natural state. |
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Term
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Definition
| The sum of goods and services provided by natural and managed ecosystems, both free of charge and essential to human life and well-being |
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