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Native Woodlands and Birds of South Dakota
Mark A. Rumble
其他書名
Past and Present
出版U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, 1998
URLhttp://books.google.com.hk/books?id=IdrLD-aNErkC&hl=&source=gbs_api
EBookFULL_PUBLIC_DOMAIN
註釋Eighty-four percent of the upland bird species in present-day bird counts along the Missouri River were included in bird species lists 150 years ago. Eighty-three percent of upland bird species in the Slim Buttes area also occurred 80 to 120 years ago. Historical photographs show native woodlands were part of the presettlement landscape. Expansion of the ranges of blue jays, common grackles, and eastern phoebes in western South Dakota can be attributed to tree plantings, cultivation, and urbanization rather than expanded native woodlands.