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The Ecology of Pools 19 and 20, Upper Mississippi River

其他書名	A Community Profile
出版	U.S. Fish and Wildlife Service, 1986
URL	http://books.google.com.hk/books?id=syalkdvTaigC&hl=&source=gbs_api

註釋To accommodate navigation, the Upper Mississippi River has been extensively modified by the dredging of navigation channels and the construction of a series of lock and dam structures. Each lock and dam creates a pool on the river. This document reviews ecological information and data on navigation pools 19 and 20 of the Upper Mississippi River, extending from near Keokuk, IA, southward to Canton, MO, and Meyer, IL. This report reviews the geologic history and present physiographic conditions of the pools. Biological populations inhabiting or associated with the pools are described, followed by a section on community functions which includes a discussion of production and trophic interactions. The final chapter describes human impacts on this section of the river.