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Macrozoobenthic zonation in relation to major environmental factors across the Archipelago Sea, northern Baltic Sea O'Brien, K.; Hänninen, J.; Kanerva, T.; Metsärinne, L.; Vuorinen, I. (2003). Macrozoobenthic zonation in relation to major environmental factors across the Archipelago Sea, northern Baltic Sea. Boreal Env. Res. 8(2): 159-170 In: Boreal Environment Research. Finnish Environment Institute: Helsinki. ISSN 1239-6095; e-ISSN 1797-2469, meer

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Trefwoorden

Aquatic communities > Benthos Aquatic communities > Benthos > Zoobenthos Composition > Community composition Environmental factors ANE, Baltic, Archipelago Sea [Marine Regions] Marien/Kust

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Auteurs		Top
O'Brien, K. Hänninen, J. Kanerva, T.	Metsärinne, L. Vuorinen, I., meer

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Abstract

Benthic macrofaunal assemblages from a series of samples taken between 1994 and 2000 across the Archipelago Sea are described, and community structure in relation to major environmental factors analysed. Results provided a clear division of the Archipelago Sea into three zones based on benthic species composition. Environmental factors which best explained the observed species distribution, i.e. temperature, salinity, dissolved oxygen, and sediment organic carbon were seen to operate along a cline of increasing depth. An east-west comparison of adjacent zones was also investigated. These closely resembled one another showing few significant differences. Local environmental factors were considered responsible where differences were observed. Evidence of a marked temporal difference in species composition in the middle parts of the archipelago was shown. The results, in line with ordination analysis, indicated a seawards shift of the more polluted/impacted zones. The predictive capabilities of the canonical ordination method of redundancy analysis (RDA) were discussed.

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