QICS Paper: Response of the ammonia oxidation activity of microorganisms in surface sediment to a controlled sub-seabed release of CO2
The impact of a sub-seabed CO2 leak from geological sequestration on the microbial process of ammonia oxidation was investigated in the field. Sediment samples were taken before, during and after a controlled sub-seabed CO2 leak at four zones differing in proximity to the CO2 source (epicentre, and 25 m, 75 m, and 450 m distant). The impact of CO2 release on benthic microbial ATP levels was compared to ammonia oxidation rates and the abundance of bacterial and archaeal ammonia amoA genes and transcripts, and also to the abundance of nitrite oxidizer (nirS) and anammox hydrazine oxidoreductase (hzo) genes and transcripts. The major factor influencing measurements was seasonal: only minor differences were detected at the zones impacted by CO2 (epicentre and 25 m distant). This included a small increase to ammonia oxidation after 37 days of CO2 release which was linked to an increase in ammonia availability as a result of mineral dissolution. A CO2 leak on the scale used within this study (<1 tonne day-1) would have very little impact to ammonia oxidation within coastal sediments. However, seawater containing 5% CO2 did reduce rates of ammonia oxidation. This was linked to the buffering capacity of the sediment, suggesting that the impact of a sub-seabed leak of stored CO2 on ammonia oxidation would be dependent on both the scale of the CO2 release and sediment type. This is a publication in QICS Special Issue - International Journal of Greenhouse Gas Control, Yuji Watanabe et. al. Doi:10.1016/j.ijggc.2014.11.013.
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http://www.sciencedirect.com/science/article/pii/S1750583614003491
description: Published as an open access journal article Doi:10.1016/j.ijggc.2014.11.013
function: download
http://www.bgs.ac.uk/ukccs/accessions/index.html#item78174
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http://data.bgs.ac.uk/id/dataHolding/13606650
eng
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publication
2008-06-01
Carbon capture and storage
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2011
NERC_DDC
2010-05
2014-12-12
publication
2014-12
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See the journal publication for details
publication
2011
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See the referenced specification
publication
2010-12-08
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See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
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