Readings in Wildlife ConservationJames Allen Bailey, William Elder, Ted D. McKinney Wildlife Society, 1974 - Всего страниц: 722 |
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Стр. 162
... Grouse ( Dendragapus ob- scurus ) , Sharp - tailed Grouse ( Pedioecetes phasianellus ) , and Ruffed Grouse all feed in the fall on a large assortment of berries and succulent , green leaves . On the basis of fall food habits Sage Grouse ...
... Grouse ( Dendragapus ob- scurus ) , Sharp - tailed Grouse ( Pedioecetes phasianellus ) , and Ruffed Grouse all feed in the fall on a large assortment of berries and succulent , green leaves . On the basis of fall food habits Sage Grouse ...
Стр. 164
... grouse populations as any other factor ( Gullion , 1964b ; Brander , 1965 ; Marshall , 1965 ) . On the Cloquet Forest Research Center in northern Minnesota the Ruffed Grouse popula- tion has continued to decline during the past decade ...
... grouse populations as any other factor ( Gullion , 1964b ; Brander , 1965 ; Marshall , 1965 ) . On the Cloquet Forest Research Center in northern Minnesota the Ruffed Grouse popula- tion has continued to decline during the past decade ...
Стр. 375
... grouse range . On the other hand , it is excellent for ruffed grouse , which population should reach an unprece- dented peak in the 1951-1953 period . These changes have increased in rapidity since about 1937 and with greater ...
... grouse range . On the other hand , it is excellent for ruffed grouse , which population should reach an unprece- dented peak in the 1951-1953 period . These changes have increased in rapidity since about 1937 and with greater ...
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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