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THE EFFECTS OF AGE AND WATER FLUCTUATIONS ON FISH POPULATIONS 1
Author(s) -
Lorio Wendell J.,
Teels Billy M.,
Norwood Earl D.
Publication year - 1972
Publication title -
jawra journal of the american water resources association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.957
H-Index - 105
eISSN - 1752-1688
pISSN - 1093-474X
DOI - 10.1111/j.1752-1688.1972.tb05172.x
Subject(s) - plankton , benthic zone , bluff , environmental science , benthos , population , water level , hydrology (agriculture) , fishery , range (aeronautics) , population dynamics of fisheries , ecology , fish <actinopterygii> , biology , geography , geology , materials science , demography , cartography , geotechnical engineering , sociology , economics , composite material , microeconomics
Two lakes having similar soil types were studied to determine the effects of age and water fluctuations on plankton, benthos and fish populations. Bluff Lake is an older man‐made lake which is drawn down in the mid‐summer. Oktibbeha County Lake is a young lake and the water levels are maintained. Chemistry data from the two lakes indicate that their chemical properties are very similar. Neither lake would be considered very fertile. Net plankton populations in Bluff Lake and Oktibbeha County Lake were comparable when analyzed on a number of organisms per liter basis. Fluctuations of water levels did not seem to have an effect on the net plankton populations. The benthic population in Bluff Lake is slightly higher than that found in Oktibbeha County Lake. This is true for both numbers and weight per square meter. The species composition of benthic organisms in the two lakes were similar. Based on one‐acre samples from each lake, Bluff Lake has a more balanced fish population than does Oktibbeha County Lake. Neither, however, seems to support populations of game fish in which a high percentage of these are in the available or harvestable range. Both lakes contain high populations of gizzard shad.