Readings in Wildlife ConservationJames Allen Bailey, William Elder, Ted D. McKinney Wildlife Society, 1974 - Всего страниц: 722 |
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Стр. 57
... natural objects . Have we made any headway in developing a refined taste in natural objects " ? In the northern parts of the lake states we have a few wolves left . Each state offers a bounty on wolves . In addition , it may invoke the ...
... natural objects . Have we made any headway in developing a refined taste in natural objects " ? In the northern parts of the lake states we have a few wolves left . Each state offers a bounty on wolves . In addition , it may invoke the ...
Стр. 475
... natural resource of at least potential significance . We believe that there are four interrelated problems in the use of fish and wildlife as natural resources in the United States : ownership , habitat , cropping , and husbandry ...
... natural resource of at least potential significance . We believe that there are four interrelated problems in the use of fish and wildlife as natural resources in the United States : ownership , habitat , cropping , and husbandry ...
Стр. 540
... natural channels . Also , a study of channelization in the Little Sioux River in Iowa revealed that the channeled portions carried far fewer game fish than the natural channel ( Welker , 1967 ) . As we presented the results of the ...
... natural channels . Also , a study of channelization in the Little Sioux River in Iowa revealed that the channeled portions carried far fewer game fish than the natural channel ( Welker , 1967 ) . As we presented the results of the ...
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