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dc.contributor.authorCollins, M
dc.contributor.authorFeistel, Susanne
dc.contributor.authorTurner, Lucy
dc.contributor.authorClark, MS
dc.contributor.authorSpicer, John
dc.contributor.authorTruebano, M
dc.date.accessioned2019-09-02T06:42:13Z
dc.date.issued2019-11-25
dc.identifier.issn0048-9697
dc.identifier.issn1879-1026
dc.identifier.other133444
dc.identifier.urihttp://hdl.handle.net/10026.1/14837
dc.description.abstract

Coastal ecosystems, including estuaries, are increasingly pressured by expanding hypoxic regions as a result of human activities such as increased release of nutrients and global warming. Hypoxia is often defined as oxygen concentrations below 2 mL O2 L-1. However, taxa vary markedly in their sensitivity to hypoxia and can be affected by a broad spectrum of low oxygen levels. To better understand how reduced oxygen availability impacts physiological and molecular processes in invertebrates, we investigated responses of an estuarine amphipod to an ecologically-relevant level of moderate hypoxia (~2.6 mL O2 L-1) or severe hypoxia (~1.3 mL O2 L-1). Moderate hypoxia elicited a reduction in aerobic scope, and widespread changes to gene expression, including upregulation of metabolic genes and stress proteins. Under severe hypoxia, a marked hyperventilatory response associated with maintenance of aerobic performance was accompanied by a muted transcriptional response. This included a return of metabolic genes to baseline levels of expression and downregulation of transcripts involved in protein synthesis, most of which indicate recourse to hypometabolism and/or physiological impairment. We conclude that adverse ecological effects may occur under moderate hypoxia through compromised individual performance and, therefore, even modest declines in future oxygen levels may pose a significant challenge to coastal ecosystems.

dc.format.extent133444-133444
dc.format.mediumPrint-Electronic
dc.languageen
dc.language.isoen
dc.publisherElsevier
dc.subjectHypoxia
dc.subjectEstuary
dc.subjectIntegrative
dc.subjectEcophysiology
dc.subjectCrustacea
dc.titleModerate reductions in dissolved oxygen may compromise performance in an ecologically-important estuarine invertebrate
dc.typejournal-article
dc.typeJournal Article
plymouth.author-urlhttps://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000489694700070&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008
plymouth.volume693
plymouth.publication-statusPublished
plymouth.journalScience of the Total Environment
dc.identifier.doi10.1016/j.scitotenv.2019.07.250
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Biological and Marine Sciences
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA07 Earth Systems and Environmental Sciences
plymouth.organisational-group/Plymouth/Research Groups
plymouth.organisational-group/Plymouth/Research Groups/Marine Institute
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
plymouth.organisational-group/Plymouth/Users by role/Researchers in ResearchFish submission
dc.publisher.placeNetherlands
dcterms.dateAccepted2019-07-16
dc.rights.embargodate2020-7-16
dc.identifier.eissn1879-1026
dc.rights.embargoperiodNot known
rioxxterms.versionAccepted Manuscript
rioxxterms.versionofrecord10.1016/j.scitotenv.2019.07.250
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2019-11-25
rioxxterms.typeJournal Article/Review


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