Accession Number : ADA323368

Title :   The Ecology of Pools 19 and 20, of the Upper Mississippi River: A Community Profile.

Descriptive Note : Biological rept.,

Corporate Author : NATIONAL WETLANDS RESEARCH CENTER SLIDELL LA

Personal Author(s) : Jahn, Larry A. ; Anderson, Richard V.

PDF Url : ADA323368

Report Date : SEP 1986

Pagination or Media Count : 155

Abstract : 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 in 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.

Descriptors :   *MISSISSIPPI RIVER, *ECOLOGY, MAMMALS, NUTRIENTS, POPULATION, GEOLOGY, NAVIGATION, PRODUCTIVITY, RIVERS, INVERTEBRATES, DREDGING, FISHES, AQUATIC PLANTS, DAMS, LOCKS(WATERWAYS), WATERFOWL.

Subject Categories : Ecology

Distribution Statement : APPROVED FOR PUBLIC RELEASE