| The history of cyanobacterial blooms in the Baltic Sea. | |
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MedLine Citation:
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PMID: 11697246 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Long-term information on possible changes in cyanobacterial blooms in the Baltic Sea, formed mainly by Nodularia spumigena and Aphanizomenon sp., was sought in published records in historical (years 1887-1938) and modern (years 1974-1998) phytoplankton data sets. Old and new sampling methods and fixatives were tested to improve the comparison of data that had been collected and analyzed in different ways. A hundred years ago, plankton was mainly of interest as a source of fish food; eutrophication problems were only locally reported from the coast, mainly in southern haffs and the receiving waters of larger cities. There were few recordings of open-sea blooms before World War II. Abundances of Nodularia spumigena and Aphanizomenon sp. were low in the old material, and 137 summer samples from 1887-1938 showed no peak abundance. High abundances are common in the new material, and the range of the numbers of both taxa has increased markedly relative to the old material. Since the 1960s, cyanobacterial blooms have been common in the open sea in both the Baltic proper and the Gulf of Finland, indicating high availability of nutrients. |
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Authors:
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T Finni; K Kononen; R Olsonen; K Wallström |
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Publication Detail:
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Type: Historical Article; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Ambio Volume: 30 ISSN: 0044-7447 ISO Abbreviation: Ambio Publication Date: 2001 Aug |
Date Detail:
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Created Date: 2001-11-07 Completed Date: 2002-02-26 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0364220 Medline TA: Ambio Country: Sweden |
Other Details:
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Languages: eng Pagination: 172-8 Citation Subset: IM |
Affiliation:
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Maj and Tor Nessling Foundation, Fredrikink. 20 B 16, FIN-00120 Helsinki, Finland. finni@mbnet.fi |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Baltic States Cyanobacteria* Environmental Monitoring / history* Eutrophication* History, 19th Century History, 20th Century Nitrogen / analysis, history Phosphorus / analysis, history Population Dynamics |
| Chemical | |
Reg. No./Substance:
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7723-14-0/Phosphorus; 7727-37-9/Nitrogen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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