Robert M. Jenkins

Prey-Predator Relations in the Predator-Stocking-Evaluation Reservoirs

The method advanced for estimating prey-predator relations in reservoirs is based on fish standing crop data derived from samples collected in rotenone-treated coves in 23 reservoirs. The sampling, in August 1972 and 1973, was part of a cooperative study conducted under the auspices of the Reservoir Committee, Southern Division of the American Fisheries Society. Estimates were made of sizes ofprey species which predators with various mouth sizes could swallow; lengths ofall species ofpredators were then adjusted to equal the lengths of largemouth bass of equivalent predatory capability;...

Reservoir Management Prognosis: Migraines or Miracles

There are about 500 reservoirs (larger than 500 acres), totaling 4.3 million acres, in the 14 States of the Southern Division. Angling demand is predicted to double on Southern waters by the year 2000, and most of the increase is expected to be satisfied by man-made lakes. Southern reservoirs are typically below average in basic fertility, but long growing seasons foster high annual production rates, resulting in above average sport fish yield potentials. The steady accumulation of reservoir environmental and biological data during the past quarter century has greatly increased our...