Readings in Wildlife ConservationJames Allen Bailey, William Elder, Ted D. McKinney Wildlife Society, 1974 - Всего страниц: 722 |
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Стр. 168
... habitat niches for a species are often too elusive for human perception . The main criterion for judgment may be the behavior of the species , itself , considered over sufficiently long periods of time to be meaningful . Svärdson ...
... habitat niches for a species are often too elusive for human perception . The main criterion for judgment may be the behavior of the species , itself , considered over sufficiently long periods of time to be meaningful . Svärdson ...
Стр. 478
... habitat on private lands with state funds - have failed to counterbalance the steady deterioration of wildlife habitat on private lands . Consequently the states , in licensing hunters , are selling them the right to pursue an ever ...
... habitat on private lands with state funds - have failed to counterbalance the steady deterioration of wildlife habitat on private lands . Consequently the states , in licensing hunters , are selling them the right to pursue an ever ...
Стр. 656
... habitat will continue to be " civilized . " If we save teal habitat , we will end up with teal ; if mallard habitat , then mallards ; and so on . Broadly speaking , regulations , and all that goes into them , have an immediate effect on ...
... habitat will continue to be " civilized . " If we save teal habitat , we will end up with teal ; if mallard habitat , then mallards ; and so on . Broadly speaking , regulations , and all that goes into them , have an immediate effect on ...
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