Readings in Wildlife ConservationJames Allen Bailey, William Elder, Ted D. McKinney Wildlife Society, 1974 - Всего страниц: 722 |
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Стр. 319
... example of a stress - induced pest irruption occurred at Brookhaven National Laboratory , where oaks became vulner- able to aphids when translocation of sugars and amino acids was impaired by continuing gamma irradiation.15 Radionuclide ...
... example of a stress - induced pest irruption occurred at Brookhaven National Laboratory , where oaks became vulner- able to aphids when translocation of sugars and amino acids was impaired by continuing gamma irradiation.15 Radionuclide ...
Стр. 321
... example of a stress - induced pest irruption occurred at Brookhaven National Laboratory , where oaks became vulner- able to aphids when translocation of sugars and amino acids was impaired by continuing gamma irradiation . 15 ...
... example of a stress - induced pest irruption occurred at Brookhaven National Laboratory , where oaks became vulner- able to aphids when translocation of sugars and amino acids was impaired by continuing gamma irradiation . 15 ...
Стр. 403
... example , the worker might state his specific problem to be the improvement of natural range vegetation in the ponderosa pine forests of the Blue Mountains in Oregon , through better grazing management . When he has defined his special ...
... example , the worker might state his specific problem to be the improvement of natural range vegetation in the ponderosa pine forests of the Blue Mountains in Oregon , through better grazing management . When he has defined his special ...
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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