ABSTRACT: Cold-water coral (CWC) reefs are recognised as an important marine benthic ecosystem at continental margins. Where abundant, they most likely play a role both in the maintenance of biodiversity and in the provision of ecosystem services provided by shelf seas. Here, we directly measure the community respiration of a CWC reef on the Norwegian shelf and show that rates of oxygen uptake are high in summer (25−88 mmol O2 m−2 d−1), with lower spring values (7.5−9 mmol O2 m−2 d−1). Spring uptake rates are comparable to values at shelf sediments at similar water depths, while summer values are much higher. We calculate that with such high respiration rates, CWC reef ecosystems potentially turnover a significant proportion (~25%) of the annual shelf carbon export in the Norwegian Sea, where CWC reefs are abundant. The loss of CWCs through physical destruction or ocean acidification may have a significant impact on local carbon cycling in the mid- to high-latitude North Atlantic Ocean.
KEY WORDS: Benthic community respiration · Cold-water corals · Lophelia pertusa · Carbon cycling
Full text in pdf format | Cite this article as: White M, Wolff GA, Lundälv T, Guihen D, Kiriakoulakis K, Lavaleye M, Duineveld G
(2012) Cold-water coral ecosystem (Tisler Reef, Norwegian Shelf) may be a hotspot for carbon cycling. Mar Ecol Prog Ser 465:11-23. https://doi.org/10.3354/meps09888
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