Readings in Wildlife ConservationJames Allen Bailey, William Elder, Ted D. McKinney Wildlife Society, 1974 - Всего страниц: 722 |
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Стр. 316
... occurring most rapidly at the beginning , but bimodal or cyclic patterns may also occur . Bioenergetics of Ecosystem Development Attributes 1 through 5 in Table 1 represent the bioenergetics of the ecosystem . In the early stages of ...
... occurring most rapidly at the beginning , but bimodal or cyclic patterns may also occur . Bioenergetics of Ecosystem Development Attributes 1 through 5 in Table 1 represent the bioenergetics of the ecosystem . In the early stages of ...
Стр. 489
... occur in mountains near the western boundary ; a small band of antelope has been reported near the eastern boundary ; small bands of mustangs and wild burros range over the area . The State , itself , has scattered populations of the ...
... occur in mountains near the western boundary ; a small band of antelope has been reported near the eastern boundary ; small bands of mustangs and wild burros range over the area . The State , itself , has scattered populations of the ...
Стр. 672
... occur in the birth- and death - rate curves , and only small changes occur in net production per unit of breeding stock . Thus , the net number of young produced by the population ( the product of net individual pro- duction times ...
... occur in the birth- and death - rate curves , and only small changes occur in net production per unit of breeding stock . Thus , the net number of young produced by the population ( the product of net individual pro- duction times ...
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 |
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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