Cold-water coral ecosystem (Tisler Reef, Norwegian Shelf) may be a hotspot for carbon cycling

Marine Ecology Progress Series

Marc Lavaleye¹  George A. Wolff¹  Kostas Kiriakoulakis¹  Tomas Lundälv¹  Gerard Duineveld¹  Damien Guihen¹  Martin White¹ 

关键词: Benthic community respiration;    Cold-water corals;    Lophelia pertusa;    Carbon cycling;   

DOI  :  10.3354/meps09888

学科分类：海洋学与技术

来源: Inter-Research

【 摘 要 】

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.

【 授权许可】

Unknown