Readings in Wildlife ConservationJames Allen Bailey, William Elder, Ted D. McKinney Wildlife Society, 1974 - Всего страниц: 722 |
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Стр. 119
... ECONOMIC VALUE ON FISH AND WILDLIFE ? ( 1965 ) James Crutchfield I would like to discuss three questions : First , should we actually use economic evaluations as a sole or major basis for investment in outdoor recreation ? Second , can ...
... ECONOMIC VALUE ON FISH AND WILDLIFE ? ( 1965 ) James Crutchfield I would like to discuss three questions : First , should we actually use economic evaluations as a sole or major basis for investment in outdoor recreation ? Second , can ...
Стр. 122
... economic question . These are natural resources used by , and essentially belonging to , the people of the state . And the question is which use or which combination of uses brings the greater benefits . I don't think you can do this ...
... economic question . These are natural resources used by , and essentially belonging to , the people of the state . And the question is which use or which combination of uses brings the greater benefits . I don't think you can do this ...
Стр. 307
... economic biology would be inadequate to sustain a conservation movement and noted that the whole of an ecosystem is ... economic entomology , division of economic mammalogy , chief of food habits research , professor of economic ...
... economic biology would be inadequate to sustain a conservation movement and noted that the whole of an ecosystem is ... economic entomology , division of economic mammalogy , chief of food habits research , professor of economic ...
Содержание
PERSPECTIVES | 1 |
Thinking like a mountain | 9 |
Lost margins in the abandoned farm | 19 |
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Readings in Wildlife Conservation James Allen Bailey,William Elder,Ted D. McKinney Просмотр фрагмента - 1974 |
Часто встречающиеся слова и выражения
acres adult agencies animals annual areas Barbary sheep behavior big game biological biologists birds black-tailed deer breeding burning Canada Canada geese caribou carrying capacity changes chaparral conservation cost crop Dall sheep diversity ecological economic ecosystem effects environment example exotic experience factors farm fertility Fish and Game fish and wildlife forage forest game management geese goose groups grouse growth habitat harvest herd hunters hunting important increase individual kill land Leopold limited living mallards marshes ment method Mississippi Flyway moose mortality muskrats National Park natural organic Park Service percent plants population density prairie predation problem production quail recreation refuge reproductive result ruffed grouse season seed sharecropping shrubland social soil species sport square miles succession territory tion types ungulates unit vegetation waterfowl white-tailed deer wild Wildl wildlife management wildlife resources winter range wolf wolves