Readings in Wildlife ConservationJames Allen Bailey, William Elder, Ted D. McKinney Wildlife Society, 1974 - Всего страниц: 722 |
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Стр. 338
... limited numbers or not at all . This fact , that extensive environments apparently containing every food and cover requirement are frequently totally devoid of certain species or support only very limited populations of these species ...
... limited numbers or not at all . This fact , that extensive environments apparently containing every food and cover requirement are frequently totally devoid of certain species or support only very limited populations of these species ...
Стр. 577
... limited or slow changes in management practices are possible under political or economic restraints . Most , if not all , wildlife managers , having limited information and faced with these restraints , practice Lindblom's method of ...
... limited or slow changes in management practices are possible under political or economic restraints . Most , if not all , wildlife managers , having limited information and faced with these restraints , practice Lindblom's method of ...
Стр. 580
... limited comparisons . Successive Limited Comparisons ( Branch ) lb. Selection of value goals and empirical analysis of the needed action . are not distinct from one another but are closely intertwined . 2b . Since means and ends are not ...
... limited comparisons . Successive Limited Comparisons ( Branch ) lb. Selection of value goals and empirical analysis of the needed action . are not distinct from one another but are closely intertwined . 2b . Since means and ends are not ...
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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 |
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