Readings in Wildlife ConservationJames Allen Bailey, William Elder, Ted D. McKinney Wildlife Society, 1974 - Всего страниц: 722 |
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Стр. 92
... organic cycle is inadequate . The reluctance to accept death , evidently a predominant Schweitzer characteristic ( Russell , 1941 ) , reveals an unseeing devotion to the vital spark . It is death that makes it glow , measure for measure ...
... organic cycle is inadequate . The reluctance to accept death , evidently a predominant Schweitzer characteristic ( Russell , 1941 ) , reveals an unseeing devotion to the vital spark . It is death that makes it glow , measure for measure ...
Стр. 322
... organic to organic ( Table 1 , item 7 ) . In a mineral nutrient - rich environment , small size is of selective advantage , especially to autotrophs , because of the greater surface - to - volume ratio . As the ecosystem develops ...
... organic to organic ( Table 1 , item 7 ) . In a mineral nutrient - rich environment , small size is of selective advantage , especially to autotrophs , because of the greater surface - to - volume ratio . As the ecosystem develops ...
Стр. 333
... organic soil and a rich organic soil causes high production ? This kind of reasoning leads up a blind alley . We are dealing with the different dependent properties of the same sys- tem . Only things outside the system can cause ...
... organic soil and a rich organic soil causes high production ? This kind of reasoning leads up a blind alley . We are dealing with the different dependent properties of the same sys- tem . Only things outside the system can cause ...
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