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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Biotic couplings on shallow water soft bottoms: examples from the northern Baltic Sea Bonsdorff, E.; Blomqvist, E.M. (1993). Biotic couplings on shallow water soft bottoms: examples from the northern Baltic Sea, in: Ansell, A.D. et al. Oceanogr. Mar. Biol. Ann. Rev. 31. Oceanography and Marine Biology: An Annual Review, 31: pp. 153-176 In: Ansell, A.D.; Gibson, R.N.; Barnes, M. (Ed.) (1993). Oceanogr. Mar. Biol. Ann. Rev. 31. Oceanography and Marine Biology: An Annual Review, 31. UCL Press: London. ISBN 1-85728-085-7; e-ISBN 0-203-49904-2. V, 630 pp., meer In: Oceanography and Marine Biology: An Annual Review. Aberdeen University Press/Allen & Unwin: London. ISSN 0078-3218; e-ISSN 2154-9125, meer

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Beschikbaar in	Auteurs
VLIZ: Non-open access 281589 [ aanvragen ]

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Trefwoorden

Aquatic communities > Benthos Environmental factors > Biotic factors Motion > Water motion > Circulation > Water circulation > Shelf dynamics ANE, Northern Baltic [Marine Regions] Marien/Kust; Brak water

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Auteurs		Top
Bonsdorff, E., meer Blomqvist, E.M.

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Abstract

Biotic couplings in brackish shallow water systems have been studied extensively in the northern Baltic Sea. The non-tidal Baltic is characterised by steep horizontal and vertical, local and basin-wide environmental gradients (salinity, temperature, oxygen, exposure, sediment quality, archipelago systems) ranging from almost limnic, sheltered inner bays to brackish 'marine' conditions in the exposed open coastal zone. The species number of zoobenthos and fish is generally low, and most species live at the border of their physiological tolerance. Despite the physiological pressure on the organisms, biotic interactions (intra- and interspecific; within- and between trophic levels and functional groups) are significant in establishing the community organisation recorded in any local habitat at any given moment. Due to the salinity-stress, few epibenthic invertebrate predators occur in the Baltic, and benthivorous fish are important in the regulation of the infauna of the shallow (0-5 m) archipelago waters. Fish, however, mainly utilise these habitats in the summer season, whereas zoobenthos have a less marked seasonal variability in terms of biomass and species composition. As the number of key species is low, the ecosystem is highly vulnerable to unexpected catastrophic events, or man-made stress, such as eutrophication, but simultaneously the recovery potential of the biota is high.

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