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Cold-water coral reefs and adjacent sponge grounds: hotspots of benthic respiration and organic carbon cycling in the deep sea
Provedor de dados: 5
Autores: Cathalot, Cecile; Van Oevelen, Dick; Cox, Tom J.s.; Kutti, Tina; Lavaleye, Marc S. S.; Duineveld, Gca; Meysman, Filip J. R.
Cold-water coral reefs and adjacent sponge grounds are distributed widely in the deep ocean, where only a small fraction of the surface productivity reaches the seafloor as detritus. It remains elusive how these hotspots of biodiversity can thrive in such a food-limited environment, as data on energy flow and organic carbon utilization are critically lacking. Here we report in situ community respiration rates for cold-water coral and sponge ecosystems obtained by the non-invasive aquatic Eddy Correlation technique. Oxygen uptake rates over coral reefs and adjacent sponge grounds in the Træna Coral Field (Norway) were 9–20 times higher than those of the surrounding soft sediments. These high respiration rates indicate strong organic matter consumption, and...
Tipo: Text
Palavras-chave: Deep-seaecosystems; Cold-watercorals; Sponges; Respiration; Energyflow.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00275/38574/37099.pdf