J. W. Foltz

Radiotelemetry which employed temperature-sensitive transmitters was used to monitor spring movement and summer habitat selection of 19 adult striped bass (Marone saxatilis) in the Santee-Cooper reservoirs, South Carolina. Nine fish were followed for 63 days during the late spring and summer 1985. Of the 61 recorded locations, 9 were fish which had utilized a thermal refuge. Mean water column temperature (28.1 0 C) and average thermal selection (27.80 C) did not differ significantly in observations where fish did not use thermal refuges. Average water column temperature was 29.00 C when...

Upper thermal tolerance limits (TL50's) for early life stages of Par Pond and Florida stocks of largemouth bass (Micropterus salmoides intergrade and M. s. loridanus) were determined. Comparisons were made between 3 stages (non-feeding and feeding pro-larvae, and post-larvae), 2 initial temperatures (18° and 23° C), and instant vs. gradual (5° C/day) exposures to test temperatures between 18° and 38° C. Upper thermal tolerance limits did not differ between largemouth bass stocks, life stages, or initial temperatures. Ninety-six hour TL50 was 32.8° C for instant exposures and 34.1° C for...

Concentrations of chlorophyll a, soluble orthophosphate, dissolved nitrate and nitrite, and associated water quality parameters were measured biweekly from May 1979 to May 1980 in 3 sequential ponds located on a dairy farm. Pond number 1 was located in the immediate vicinity of the barn and feedlot, and demonstrated limnological characteristics of a sewage settling pond Chlorophyll a and soluble orthophosphate averaged 298 mg/m3 and 10.1 mg/l respectively. Dissolved oxygen in pond 1 averaged 3.4 mg/l at the surface but was never present at a depth of 1 m. The presence of a settling pond as...