L. J. Davis

Habitat use and movements associated with changes in dissolved oxygen (DO) levels and hydrology for 20 radio-tagged largemouth bass {Micropterus salmoides) were studied in the Kissimmee River, Florida, in 1992 and 1993. River channel littoral vegetation, smartweed (Polygonum hydropiperoides) and spatterdock {Nuphar luteum), were habitat types bass most commonly used. Bass maintained home areas in remnant channels and the C-38 canal that had DO >2 ppm throughout the year. During summer when DO dropped slowly over several weeks, bass were frequently located in waters with DO between 1 and...

Density, biomass, and species composition of fish 6 em total length (TL) were determined in 4 aquatic plant communities in Lake Okeechobee, Florida, with 0.08-ha block nets and Wegener Rings (0.004 ha). Wegener Rings were placed within block nets prior to rotenone application. In Illinois pondweed (Potamogeton illinoensis), mean density and biomass estimates derived with the 2 gears were not significantly different. In eel-grass (Vallisineria americana) and hydrilla (Hydrilla verticillata) , mean density estimates derived with Wegener Rings were significantly higher than those derived with...