Readings in Wildlife ConservationJames Allen Bailey, William Elder, Ted D. McKinney Wildlife Society, 1974 - Всего страниц: 722 |
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Стр. 203
... possible . The extent to which one of these growth phenomena may be enhanced through the partial suppression of the others raises the problem of value systems . Population density may be intensified at the expense of reduction in ...
... possible . The extent to which one of these growth phenomena may be enhanced through the partial suppression of the others raises the problem of value systems . Population density may be intensified at the expense of reduction in ...
Стр. 577
... possible under political or economic restraints . Most , if not all , wildlife managers , having limited information and faced with these restraints , practice Lindblom's method of successive limited comparisons in their management ...
... possible under political or economic restraints . Most , if not all , wildlife managers , having limited information and faced with these restraints , practice Lindblom's method of successive limited comparisons in their management ...
Стр. 584
... possible policies . He cannot even comprehend one policy entirely . In planning a soil bank program , he cannot successfully anticipate the impact of higher or lower farm income on , say , urbanization - the possible consequent ...
... possible policies . He cannot even comprehend one policy entirely . In planning a soil bank program , he cannot successfully anticipate the impact of higher or lower farm income on , say , urbanization - the possible consequent ...
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