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RECORD NUMBER: 23 OF 41

OLS Field Name OLS Field Data
Main Title Possible Effects of Organochlorine Pesticides on Primary Productivity and Skeletogenesis of New England Estuarine and Coastal Marine Algae.
Author Sear, James R. ; Yentsc, Charles ;
CORP Author Massachusetts Univ., Amherst. Water Resources Research Center.
Year Published 1972
Report Number DI-14-31-0001-3221; OWRR-A-035-MASS; 09653,; A-035-MASS(1)
Stock Number PB-210 146
Additional Subjects ( Algae ; Ecology) ; ( Chlorine organic compounds ; Ecology) ; ( Photosynthesis ; Algae) ; ( Water pollution ; Chlorine organic ompounds) ; Estuaries ; DDT ; Pesticides ; Primary biological productivity ; Tracer studies ; Labeled substances ; Carbon 14 ; Water flow ; Ulva ; Rhodymenia ; Fucus ; Water pollution effects(Plants)
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NTIS  PB-210 146 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 14p
Abstract Techniques have been developed to estimate rates of photosynthesis in macroscopic marine algae by monitoring oxygen production. Attempts to use 14C techniques were unsuccessful, because of the difficulty of recovering assimilated 14C by maceration, acid hydrolysis and strong base solubilization of thalli. Photosynthesis by macroscopic algae was strongly influenced by water movement. Under conditions of standing water, oxygen production decreased to a fraction of oxygen production in a stirred system. The effect of DDT on photosynthesis of Rhodymenia, Fucus and Ulva could not be consistently demonstrated. If any effect did occur, its magnitude was below the level of detection because of the photosynthetic variability among plants. These findings are in contrast to the pronounced effects of DDT on phytoplankton photosynthesis reported previously.
NTIS Title Notes Project completion rept., Sep 70-30 Jun 71.
PUB Date Free Form 14 Feb 72,
Category Codes 6F; 8A; 13B; 57H; 78A; 68D
NTIS Prices PC A02/MF A01
Document Type NT
Cataloging Source NTIS/MT
Control Number 326530053
Origin NTIS
Type CAT