title: Effects of CO2 on benthic biota: an in situ benthic chamber experiment in Storfjorden (Norway).
abstract: Carbon capture and storage (CCS) methods, either sub-seabed or in ocean depths, introduces risk of CO2 leakage and subsequent interaction with the ecosystem. It is therefore important to obtain information on possible effects of CO2. In situ CO2 exposure experiments were carried out twice for 10 days during 2005 using a Benthic Chamber system at 400 m depth in Storfjorden, Norway. pCO2 in the water above the sediment in the chambers was controlled at approximately 500, 5000 and 20,000 μatm, respectively. This article describes the experiment and the results from measured the biological responses within the chamber sediments. The results show effects of elevated CO2 concentrations on biological processes such as increased nanobenthos density. Methane production and sulphate reduction was enhanced in the approximately 5000 μatm chamber.
authors: General Environmental Technos Co., Ltd., Tokyo 101-0042, Japan. Electronic address: ishida_hiroshi@kanso.co.jp.
authors: Hiroshi
authors: H
authors: Ishida
authors: Lars G
authors: LG
authors: Golmen
authors: Julia
authors: J
authors: West
authors: Martin
authors: M
authors: Krüger
authors: Patricia
authors: P
authors: Coombs
authors: John Arthur
authors: JA
authors: Berge
authors: Tastuo
authors: T
authors: Fukuhara
authors: Michimasa
authors: M
authors: Magi
authors: Jun
authors: J
authors: Kita
mesh_terms: D000818:Animals; D058448:Biota; D002245:Carbon Dioxide / Q000633:toxicity*; D057965:Carbon Sequestration; D052918:Environmental Restoration and Remediation; D019015:Geologic Sediments / Q000737:chemistry*; D007448:Invertebrates / Q000502:physiology*; D009664:Norway; D014874:Water Pollutants, Chemical / Q000633:toxicity*
chemical_list: D014874:Water Pollutants, Chemical; D002245:Carbon Dioxide
keywords: CCS; CO(2) leakage; CO(2) storage; Climatic change; Field experiments