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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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Effects of eelgrass (Zostera marina) canopy removal and sediment addition on sediment characteristics and benthic communities in the Northern Baltic Sea Herkül, K.; Kotta, J. (2009). Effects of eelgrass (Zostera marina) canopy removal and sediment addition on sediment characteristics and benthic communities in the Northern Baltic Sea. Mar. Ecol. (Berl.) 30(s1): 74-82. https://dx.doi.org/10.1111/j.1439-0485.2009.00307.x In: Marine Ecology (Berlin). Blackwell: Berlin. ISSN 0173-9565; e-ISSN 1439-0485, meer Ook verschenen in: (2009). Proceedings of the 43rd European Marine Biology Symposium, The Azores Islands (Portugal), 8-12 September 2008. European Marine Biology Symposia, 43. Marine Ecology (Berlin), 30(Suppl. 1). 202 pp., meer

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Beschikbaar in	Auteurs
VLIZ: Open access 225777 [ download pdf ]

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Trefwoorden

Hydrocharitaceae Jussieu [WoRMS]; Zostera subg. Zostera marina Linnaeus, 1753 [WoRMS] Marien/Kust

Author keywords

Baltic Sea; benthic community; disturbance; oxygen flux; seagrass; sedimentation; Zostera marina

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Auteurs		Top
Herkül, K. Kotta, J., meer

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Abstract

The eelgrass Zostera marina is a key structural and functional species across the European coastline. The separate and interactive effects of eelgrass canopy removal and sediment addition on the sediment characteristics and the structure of benthic communities were studied in a factorial field experiment in the Northern Baltic Sea in July–August 2006. The removal of eelgrass canopy temporarily increased the sediment oxygen consumption, reduced the content of fine particles (<100 µm) and organic matter in the sediment, and increased the share of sand fraction (250–500 µm). Sediment addition increased the content of fine particles (<100 µm) and reduced the share of sand fraction (250–1000 µm). The effects were strongest in the presence of eelgrass canopy. Benthic invertebrates and macroalgae were affected by eelgrass canopy removal but not by sediment addition. The removal of eelgrass canopy significantly decreased benthic species richness and invertebrate and macroalgal densities. To conclude, our experiment demonstrates that Z. marina defines the patterns of benthic macroalgae and invertebrates but has moderate effects on sediment structure and metabolism in the Northern Baltic Sea.

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