Readings in Wildlife ConservationJames Allen Bailey, William Elder, Ted D. McKinney Wildlife Society, 1974 - Всего страниц: 722 |
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Стр. 144
... percent of the value , hunting 18 percent , camping and picnicking 15 percent , relaxation and driving 14 percent , wildlife observation and photography 12 percent , and all other recreational uses lesser amounts . This type of analysis ...
... percent of the value , hunting 18 percent , camping and picnicking 15 percent , relaxation and driving 14 percent , wildlife observation and photography 12 percent , and all other recreational uses lesser amounts . This type of analysis ...
Стр. 145
... percent of the value , hunting 18 percent , camping and picnicking 15 percent , relaxation and driving 14 percent , wildlife observation and photography 12 percent , and all other recreational uses lesser amounts . This type of analysis ...
... percent of the value , hunting 18 percent , camping and picnicking 15 percent , relaxation and driving 14 percent , wildlife observation and photography 12 percent , and all other recreational uses lesser amounts . This type of analysis ...
Стр. 675
... percent for calves and 5 percent for older age classes , the herd could have grown to its observed size with annual pregnancy rates of 95 percent in adult cows and 60 percent in yearling cows . Even if the mortality - rate estimates are ...
... percent for calves and 5 percent for older age classes , the herd could have grown to its observed size with annual pregnancy rates of 95 percent in adult cows and 60 percent in yearling cows . Even if the mortality - rate estimates are ...
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 |
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