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RECORD NUMBER: 62 OF 242

OLS Field Name OLS Field Data
Main Title Energetics of 'Daphnia Ambigua'.
Author Armitag, Kenneth B. ;
CORP Author Kansas Water Resources Research Inst., Manhattan.
Year Published 1973
Report Number Contrib-129; DI-14-31-0001-3516; OWRR-A-043-KAN; 06831,; A-043-KAN(1)
Stock Number PB-231 356
Additional Subjects Zooplankton ; Growth ; Plant ecology ; Ponds ; Metabolism ; Acclimatization ; Chlorophylls ; Oxygen consumption ; Photosynthesis ; Phosphorus inorganic acids ; Nitrogen ; Alkalinity ; Daphnia ambigua ; Daphnids
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NTIS  PB-231 356 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 33p
Abstract The population cycle of the zooplankton D. ambigua was followed in a one hectare pond at the University of Kansas. D. parvula and D. pulex also occur in the same pond. D. ambigua predominates during the colder season from November through early June when water temperatures are below 20C. The population peak of D. ambigua in May is followed by that of D. pulex and then D. parvula. Growth of D. ambigua was measured under field and laboratory conditions. Both the time of egg development to hatching and of first instar to adult were slower at lower environmental temperatures. Gross photosynthetic rate, seston concentration, and chlorophyll a concentration were determined as measures of food available to the daphnid populations.
NTIS Title Notes Project completion rept..
PUB Date Free Form Dec 73,
Category Codes 6F; 57H
NTIS Prices PC A03/MF A01
Document Type NT
Cataloging Source NTIS/MT
Control Number 326588722
Origin NTIS
Type CAT