Readings in Wildlife ConservationJames Allen Bailey, William Elder, Ted D. McKinney Wildlife Society, 1974 - Всего страниц: 722 |
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Стр. 203
... growth processes are closely interrelated : ( 1 ) the rate of physical growth and skeletal maturation in the individual , ( 2 ) the level of mature growth of the individual , ( 3 ) the level of sexual and behavioral maturity in the ...
... growth processes are closely interrelated : ( 1 ) the rate of physical growth and skeletal maturation in the individual , ( 2 ) the level of mature growth of the individual , ( 3 ) the level of sexual and behavioral maturity in the ...
Стр. 672
... growth curve . Conversely , if population growth follows an S - shaped form , the population must have an associated dome - shaped yield curve . The shape of the birth- and death - rate curves need not conform pre- cisely to those in ...
... growth curve . Conversely , if population growth follows an S - shaped form , the population must have an associated dome - shaped yield curve . The shape of the birth- and death - rate curves need not conform pre- cisely to those in ...
Стр. 675
... growth , and by assuming an annual calf mortality rate of 10 percent as in the Tyson Park simulation , the Wichita herd could have increased to its observed population size with an annual pregnancy rate of 95 percent in adult cows and ...
... growth , and by assuming an annual calf mortality rate of 10 percent as in the Tyson Park simulation , the Wichita herd could have increased to its observed population size with an annual pregnancy rate of 95 percent in adult cows and ...
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