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Science 25 August 1978:
Vol. 201. no. 4357, pp. 737 - 739
DOI: 10.1126/science.97784
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Articles

Science, Vol 201, Issue 4357, 737-739
Copyright © 1978 by American Association for the Advancement of Science

articles

Polychlorinated biphenyls may alter marine trophic pathways by reducing phytoplankton size and production

HB O'Connors Jr, CF Wurster, CD Powers, DC Biggs, and RG Rowland

Polychlorinated biphenyls at concentrations of 1 to 10 micrograms per liter reduced phytoplankton biomass and size in natural estuarine phytoplankton communities grown within dialysis bags in situ in an estuarine marsh. In polychlorinated biphenyls-contaminated waters, these changes could increase the number of trophic levels and divert the flow of biomass from harvestable fish to jellyfish and other gelatinous predators.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)