Extreme oxygen dynamics in shallow water of a fully marine Irish sea lough

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dc.contributor.author Trowbridge, Cynthia D.
dc.contributor.author Davenport, John
dc.contributor.author Cottrell, Dylan M.
dc.contributor.author Harman, Luke
dc.contributor.author Plowman, Caitlin Q.
dc.contributor.author Little, Colin
dc.contributor.author McAllen, Rob
dc.date.accessioned 2017-08-17T12:10:47Z
dc.date.available 2017-08-17T12:10:47Z
dc.date.issued 2017-02-02
dc.identifier.citation Trowbridge, C. D., Davenport, J., Cottrell, D. M., Harman, L., Plowman, C. Q., Little, C. and McAllen, R. (2017) 'Extreme oxygen dynamics in shallow water of a fully marine Irish sea lough', Regional Studies in Marine Science, 11, pp. 9-16. doi:10.1016/j.rsma.2017.01.008 en
dc.identifier.volume 11 en
dc.identifier.startpage 9 en
dc.identifier.endpage 16 en
dc.identifier.issn 2352-4855
dc.identifier.uri http://hdl.handle.net/10468/4466
dc.identifier.doi 10.1016/j.rsma.2017.01.008
dc.description.abstract The benthos of Lough Hyne (Europe’s first marine reserve) in SW Ireland has changed dramatically in the past decade with declining invertebrate communities and proliferating ephemeral macroalgae. In summer 2011 and 2012, we measured dissolved oxygen (DO) levels on shallow subtidal rocky shores of the lough and recorded both benthic hypoxia (<2 mg O2 L−1) and hyperoxia (∼10–16 mg O2 L−1). In late summer 2013, we systematically characterized the spatial and temporal patterns of DO in the lough seawater. Daytime DO levels were hyperoxic either at or near the rocky shore, declined with increased distance for the first 5 m offshore, then stabilized at normoxic levels (∼8 mg O2 L−1). DO levels above and below rocks were variable and often showed large differences (max. difference of 15.6 mg O2 L−1), particularly at rocky shore sites with low current flow. At night, the DO in shallow water declined, becoming hypoxic to anoxic during calm weather. These extreme oxygen fluctuations (i) are amongst the first records to report severe conditions within Irish coastal waters and (ii) could contribute to the known recent decline in benthic invertebrate diversity within the marine reserve. en
dc.description.sponsorship National Science Foundation (Grant INT-1130978) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Elsevier Ltd en
dc.rights © 2017 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license. en
dc.rights.uri https://creativecommons.org/licenses/by/4.0/ en
dc.subject Hyperoxia en
dc.subject Hypoxia en
dc.subject Oxygen fluctuations en
dc.subject Lough Hyne en
dc.subject Ireland en
dc.subject Marine reserve en
dc.title Extreme oxygen dynamics in shallow water of a fully marine Irish sea lough en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother John Davenport, Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland. +353-21-490-3000 Email: j.davenport@ucc.ie en
dc.internal.availability Full text available en
dc.check.info Access to this article is restricted until 24 months after publication by request of the publisher. en
dc.check.date 2019-02-02
dc.date.updated 2017-08-17T12:01:47Z
dc.description.version Accepted Version en
dc.internal.rssid 407339319
dc.contributor.funder National Science Foundation en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Regional Studies in Marine Science en
dc.internal.copyrightchecked Yes en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress j.davenport@ucc.ie en
dc.internal.IRISemailaddress r.mcallen@ucc.ie en
dc.internal.IRISemailaddress l.harman@ucc.ie en


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© 2017 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license. Except where otherwise noted, this item's license is described as © 2017 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.
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