33 pages matching ecosystem in this book
Results 1-3 of 33
What people are saying - Write a review
We haven't found any reviews in the usual places.
Lost margins in the abandoned farm
The value of diversity
39 other sections not shown
acres adult agencies Aldo Leopold animals annual areas Barbary sheep behavior big game biological biologists birds black-tailed deer breeding burning Canada geese caribou carrying capacity changes chaparral conservation crop ducks ecological economic ecosystem effects environment example exotic experience factors farm feeding fertility Fish and Game fish and wildlife forage forest goose groups grouse growth habitat harvest herd Horicon 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 public relations quail range recreation refuge reproductive result ruffed grouse season seed sharecropping shrubland social soil species sport square miles succession territory tion types ungulates vegetation waterfowl white-tailed deer wild Wildl wildlife management wildlife resources winter wolf wolves young