. Inverkehrbringen American wildlife management in der Perspektive. Wildlife Management. Habitat-Population Beziehungen das Potenzial für die Erhöhung der Wildtierpopulationen in idealer Lebensraum fast Glauben herausfordert. Im Jahr 1900 gab es praktisch keine wilden Hirsche in Pennsylvania. Original Rotwild Herde des Staates wurde zu Beginn des 19. Jahrhunderts von landclearing für Landwirtschaft, Überweidung, zerstört durch destruc- Holz schneiden durch wildes Feuer gefolgt, und durch ungeregelte schießen. Nach dem Bürgerkrieg, mit zunehmender Industrialisierung und der Eröffnung der West, Tausende von Bauern verließen ihre Rn.

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. Placing American wildlife management in perspective . Wildlife management. Habitat-Population Relationships The potential for increase in wildlife populations in ideal habitat almost defies belief. In 1900, there were virtually no wild deer left in Pennsylvania. The state's original deer herd had been destroyed early in the 19th century by landclearing for agriculture, overgrazing, by destruc- tive timber cutting followed by wild fire, and by unregulated shooting. After the Civil War, with increased industrialization and the opening of the West, thousands of farmers abandoned their marginal lands to move to towns, gold fields, or fertile soils beyond the Mississippi. Behind them, the forests, under protection from wild fire, gradually began to reoccupy abandoned fields and homesites, creating the early-growth forests favored by deer. Around the turn of the century, sportmen's organizations and the Pennsylvania Game Commission purchased a relatively few deer from other states and from private dealers, had laws passed to protect them, and released them into habitat that changing land use had made ideal for deer. Twenty-five years later, Penn's Woods held nearly a million whitetails, almost twice as many as the available range could support through winter. Potentially, a deer population can more than double every second year. One doe can produce 15 or more fawns in an average life span of eight years. If all her young and theirs survive to the same age and breed as successfully, they would number 150 or more before her death. Many animals — songbirds, rabbits, squirrels, quail and ducks, for example — can increase at even greater rates.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Wildlife Management Institute. Washington : The Institute

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