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Connection between trace metals, chelators and red tide blooms in the Laholm Bay, SE Kattegat - An experimental approach
Department of Marine Botany, University of Lund, Box 124, S-221 00 Lund, Sweden.
1986 (English)In: Marine Environmental Research, ISSN 0141-1136, E-ISSN 1879-0291, Vol. 18, no 1, p. 61-78Article in journal (Refereed) Published
Abstract [en]

The influence of the trace metals, copper, aluminum and iron, and of the strong complexing agents, EDTA and NTA, on phytoplankton growth in water from a brackish water bay was investigated through bioassay experiments. A diatom (Skeletonema costatum (Grev.) Cleve) and a dinoflagellate (Prorocentrum minimum (Pav.) J. Schiller) were used as test organisms. The growth of both phytoplankton species was strongly inhibited by copper. This inhibition was generally eliminated by EDTA and NTA. Both phytoplankton species were considerably less inhibited by aluminum than by copper at the same total metal concentration. While S. costatum responded to copper and chelator additions in the same way in sea water samples from different seasons, the growth of P. minimum exhibited pronounced seasonal variation. Other parameters than the values of pCu must be considered in order to account for the experimental results. This work supports the theory that alterations in contents of trace metals and natural chelators in sea water are important factors behind shifts in phytoplankton species composition. 

Place, publisher, year, edition, pages
1986. Vol. 18, no 1, p. 61-78
National Category
Ecology
Research subject
Ecology, Aquatic Ecology
Identifiers
URN: urn:nbn:se:lnu:diva-823DOI: 10.1016/0141-1136(86)90009-7OAI: oai:DiVA.org:lnu-823DiVA, id: diva2:307561
Available from: 2010-04-01 Created: 2010-04-01 Last updated: 2017-12-12Bibliographically approved

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Granéli, Edna

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