Readings in Wildlife ConservationJames Allen Bailey, William Elder, Ted D. McKinney Wildlife Society, 1974 - Всего страниц: 722 |
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Стр. 237
... adult and no age ratios were calculated . The young - of- the - year were easily distinguished in July , when they ... Adult Male 23 11.2 1.56 Female 23 9.6 1.52 May , 1958 Yearlings Male 14 5.4 1.26 Female 2.8 0.67 Adult Male 12 4.8 ...
... adult and no age ratios were calculated . The young - of- the - year were easily distinguished in July , when they ... Adult Male 23 11.2 1.56 Female 23 9.6 1.52 May , 1958 Yearlings Male 14 5.4 1.26 Female 2.8 0.67 Adult Male 12 4.8 ...
Стр. 663
... adults . Since immatures in the example are twice as vulnerable to hunting , the band recovery rate for immatures would be twice that of adults , resulting in an immature - adult relative recovery rate of two . Since there are twice as ...
... adults . Since immatures in the example are twice as vulnerable to hunting , the band recovery rate for immatures would be twice that of adults , resulting in an immature - adult relative recovery rate of two . Since there are twice as ...
Стр. 675
... adult cows reproduced is not valid . If the herd was subjected to annual mortality rates of 10 percent for calves and 5 percent for older age classes , the herd could have grown to its observed size with annual pregnancy rates of 95 ...
... adult cows reproduced is not valid . If the herd was subjected to annual mortality rates of 10 percent for calves and 5 percent for older age classes , the herd could have grown to its observed size with annual pregnancy rates of 95 ...
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