Depression of primary productivity by Aroclor 1232 in an interspecific lentic algal assembledge

Kricher, John; Bayer, C.

doi:10.1007/bf01686298

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…13 A total of eight experiments were performed between 18 July and 18 August, 1976. Of the eight experiments, five concerned Norton Reservoir and three concerned Stony Brook Pond.…”

Section: Methodsmentioning

confidence: 99%

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Effects of two Aroclor fractions on the productivity and diversity of algae from two lentic ecosystems

Kricher

Bayer

Martin

1979

International Journal of Environmental Studies

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During the summer of 1976, samples of the algal communities from Stony Brook Pond, Norfolk, Ma. and Norton Reservoir, Norton, Ma. were exposed in laboratory culture to various concentrations of Aroclor 1232 and 1254. Although the algal communities of the two systems were quite different in composition, the Aroclors exerted some similar effects upon both. Aroclor 1232 caused a significantly greater reduction in primary productivity than 1254 and the reduction, with both Aroclor fractions, was dose related. Algal populations were differentially affected by Aroclor exposure.

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“…13 A total of eight experiments were performed between 18 July and 18 August, 1976. Of the eight experiments, five concerned Norton Reservoir and three concerned Stony Brook Pond.…”

Section: Methodsmentioning

confidence: 99%

“…Bottles were incubated at 25°C under 30 foot candles fluorescent light for 24 hours. 13 At 24 hours, ten light and three dark bottles were established for each series and all samples were innoculated with 1/u. Ci of C 14 bicarbonate.…”

Section: Methodsmentioning

confidence: 99%

Effects of two Aroclor fractions on the productivity and diversity of algae from two lentic ecosystems

Kricher

Bayer

Martin

1979

International Journal of Environmental Studies

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“…umented, little information exists concerning their impact on biogeochemical processes. PCBs have a significant impact on algal photosynthesis (9,10,13,14,18). In addition, stimulatory and inhibitory effects of PCBs on heterotrophic mit Present address: Department of Biology, University of Massachusetts, Boston, MA 02125. crobial populations have been reported (5,6,17,20,22).…”

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confidence: 99%

Effects of polychlorinated biphenyls and environmental biotransformation products on aquatic nitrification

Sayler¹,

Shiaris²,

Beck³

et al. 1982

Appl Environ Microbiol

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The effects of polychlorinated biphenyls (PCBs) on nitrification were examined for pure cultures and natural reservoir samples. PCBs at concentrations greater than 10 ,ug liter-' inhibited nitrification, principally ammonium oxidation, in one of two natural reservoir environments. However, this inhibition could not be reproduced in pure high-cell-density cultures or in previously contaminated reservoir waters. A PCB environmental biotransformation product, p-chlorophenylglyoxylic acid, and p-chloromandelic acid had no effect on nitrification. Polychlorinated biphenyls (PCBs) are recognized as toxic environmental contaminants with near global distribution (16). PCBs are dispersed in the environment principally through industrial use, manufacturing, product and waste disposal, accidential spills, and deliberate discharge. These industrial chemicals, manufactured under the trade name Aroclor (Monsanto Industrial Chemicals Co.) in the United States, are complex mixtures of various chlorinated biphenyl congeners. Because of the environmental distribution, stability of the chlorinated biphenylic ring system (resistance to physical, chemical, and biological degradation), bioaccumulation, toxicity, and mutagenic properties, a federal ban has been placed on their manufacture and use in open-system applications. Evidence indicates that PCBs are subject to microbial biotransformation and metabolism (1, 4, 7, 8, 11, 22, 24, 25; Shiaris and Sayler, Environ. Sci. Technol., in press). We have demonstrated that environmental biotransformation of the lesser chlorinated biphenyls results in the accumulation of chlorobenzoic acids and chlorophenylglyoxylic acid (CPGA) in the environment (Shiaris and Sayler, Environ. Sci. Technol., in press). These chlorinated biotransformation products lack the apparent mutagenicity of the parent PCB residue (Sayler et al., Arch. Environ. Contam. Toxicol., in press). Although PCB toxicity to animal populations and movement in the environment are well doc

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DDE inhibition of marine algal cell division and photosynthesis per cell

Powers¹,

Wurster²,

Rowland³

1979

Pesticide Biochemistry and Physiology

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Depression of primary productivity by Aroclor 1232 in an interspecific lentic algal assembledge

Cited by 4 publications

References 5 publications

Effects of two Aroclor fractions on the productivity and diversity of algae from two lentic ecosystems

Effects of two Aroclor fractions on the productivity and diversity of algae from two lentic ecosystems

Effects of polychlorinated biphenyls and environmental biotransformation products on aquatic nitrification

DDE inhibition of marine algal cell division and photosynthesis per cell

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