Ecosystem impacts of hypoxia: thresholds of hypoxia and pathways to recovery

Show simple item record Steckbauer, A. Duarte Quesada, Carlos M. Carstensen, J. Vaquer-Sunyer, Raquel Conley, D.J. 2015-09-21T11:18:22Z 2015-09-21T11:18:22Z 2011-04
dc.identifier.citation 1748-9326
dc.description.abstract Coastal hypoxia is increasing in the global coastal zone, where it is recognized as a major threat to biota. Managerial efforts to prevent hypoxia and achieve recovery of ecosystems already affected by hypoxia are largely based on nutrient reduction plans. However, these managerial efforts need to be informed by predictions on the thresholds of hypoxia (i.e. the oxygen levels required to conserve biodiversity) as well as the timescales for the recovery of ecosystems already affected by hypoxia. The thresholds for hypoxia in coastal ecosystems are higher than previously thought and are not static, but regulated by local and global processes, being particularly sensitive to warming. The examination of recovery processes in a number of coastal areas managed for reducing nutrient inputs and, thus, hypoxia (Northern Adriatic; Black Sea; Baltic Sea; Delaware Bay; and Danish Coastal Areas) reveals that recovery timescales following the return to normal oxygen conditions are much longer than those of loss following the onset of hypoxia, and typically involve decadal timescales. The extended lag time for ecosystem recovery from hypoxia results in non-linear pathways of recovery due to hysteresis and the shift in baselines, affecting the oxygen thresholds for hypoxia through time.
dc.publisher IOP Publishing Ltd
dc.relation.isformatof Reproducció del document publicat a: 10.1088/1748-9326/6/2/025003
dc.relation.ispartof Environmental Research Letters, 2011, vol. 6, num. 2
dc.rights cc-by-nc-sa (c) IOP Publishing Ltd, 2011
dc.title Ecosystem impacts of hypoxia: thresholds of hypoxia and pathways to recovery
dc.type info:eu-repo/semantics/article
dc.type info:eu-repo/semantics/publishedVersion 2015-09-21T11:18:23Z
dc.subject.keywords hypoxia
dc.subject.keywords recovery
dc.subject.keywords coastal ocean
dc.subject.keywords eutrophication
dc.subject.keywords oxygen
dc.rights.accessRights info:eu-repo/semantics/openAccess

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