A creel survey of walleye was conducted in Pool 9 of the Upper Mississippi River from June 1, 1983 through May 31, 1984 to assess the walleye harvest and to estimate the economic impact of the walleye fishery to the area. ...

Vallisneria americana Michx. (wild celery) was studied to determine biomass, productivity, and the nutritive potential of all morphological structures. The study area was located in the southern portion of Navigation Pool ...

A study was conducted in Navigation Pool No. 9 of the Upper Mississippi River to determine the impact of the thermal effluent from Dairyland Power Cooperative's Genoa, Wisconsin electric generating facility on the ...

Phytoplankton community structure and primary production were studied in main channel, side channel, and backwater habitats of Navigation Pool No. 8 of the Upper Mississippi River from 14 June to 1 November 1986. Community ...

Eggs, larvae, and juveniles of six species of darters inhabiting the Upper Mississippi River are described. Attention to meristic, morphometric, pigment, and morphological characters which were readily apparent were employed ...