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ZOOPLANKTON STANDING CROPS IN A NEW AND AN OLD OZARK RESERVOIR
Author(s) -
Applegate Richard L.,
Mullan James W.
Publication year - 1967
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1967.12.4.0592
Subject(s) - standing crop , zooplankton , spring (device) , shoal , ecology , water reservoir , environmental science , hydrology (agriculture) , biology , geography , oceanography , geology , mechanical engineering , biomass (ecology) , geotechnical engineering , petroleum engineering , engineering
The zooplankton populations (April 1964 through June 1966) of Beaver Reservoir before full impoundment are compared with those of 14‐year‐old Bull Shoals Reservoir, both on the White River in the Arkansas‐Missouri Ozarks. Seasonal standing crop estimates show a unimodal curve in the old reservoir and a bimodal curve in the new reservoir. Significant seasonal differences between the reservoirs occurred in densities, species composition of cladoceran communities, and horizontal distribution. An increase in the standing crop in the new reservoir in spring 1966 was associated with species changes within the genus Daphnia. Mean annual standing crops of entomostracans and rotifers were similar in the two impoundments.