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dc.contributor.authorSchoenrock, Kathryn
dc.contributor.authorBacquet, Marion
dc.contributor.authorPearce, Danielle
dc.contributor.authorRea, Brice
dc.contributor.authorSchofield, J.Edward
dc.contributor.authorMair, Douglas
dc.contributor.authorKamenos, Nick
dc.date.accessioned2019-01-03T01:13:36Z
dc.date.available2019-01-03T01:13:36Z
dc.date.issued2018-10-05
dc.identifier.citationSchoenrock , K , Bacquet , M , Pearce , D , Rea , B , Schofield , J E , Mair , D & Kamenos , N 2018 , ' Influences of salinity on the physiology and distribution of the Arctic coralline algae, Lithothamnion glaciale (Corallinales, Rhodophyta) ' , Journal of Phycology , vol. 54 , no. 5 , pp. 690-702 . https://doi.org/10.1111/jpy.12774
dc.identifier.issn1529-8817
dc.identifier.otherPURE: 13395881
dc.identifier.otherPURE UUID: 73a41cbc-3e35-4f04-be94-4918ba79066d
dc.identifier.otherScopus: 85053421531
dc.identifier.otherORCID: /0000-0002-6889-224X/work/62752113
dc.identifier.urihttp://hdl.handle.net/2299/20903
dc.description.abstractIn Greenland, free-living red coralline algae contribute to and dominate marine habitats along the coastline. Lithothamnion glaciale dominates coralline algae beds in many regions of the Arctic, but never in Godthåbsfjord, Greenland, where Clathromorphum sp. is dominant. To investigate environmental impacts on coralline algae distribution, calcification and primary productivity were measured in situ during summers of 2015 and 2016, and annual patterns of productivity in L. glaciale were monitored in laboratory-based mesocosm experiments where temperature and salinity were manipulated to mimic high glacial melt. The results of field and cold-room measurements indicate that both L. glaciale and Clathromorphum sp. had low calcification and photosynthetic rates during the Greenland summer (2015 and 2016), with maximum of 1.225 ± 0.17 or 0.002 ± 0.023 μmol CaCO3 · g-1 · h-1 and -0.007 ±0.003 or -0.004 ± 0.001 mg O2 · L-1 · h-1 in each species respectively. Mesocosm experiments indicate L. glaciale is a seasonal responder; photosynthetic and calcification rates increase with annual light cycles. Furthermore, metabolic processes in L. glaciale were negatively influenced by low salinity; positive growth rates only occurred in marine treatments where individuals accumulated an average of 1.85 ± 1.73 mg · d-1 of biomass through summer. These results indicate high freshwater input to the Godthåbsfjord region may drive the low abundance of L. glaciale, and could decrease species distribution as climate change increases freshwater input to the Arctic marine system via enhanced ice sheet runoff and glacier calving.en
dc.format.extent13
dc.language.isoeng
dc.relation.ispartofJournal of Phycology
dc.rightsEmbargoed
dc.subjectArctic
dc.subjectClathromorphum sp.
dc.subjectGreenland ice sheet
dc.subjectLithothamnion glaciale
dc.subjectecophysiology
dc.subjectmaerl
dc.subjectpolar seaweeds
dc.subjectrhodolith
dc.subjectsalinity
dc.subjectAquatic Science
dc.subjectPlant Science
dc.titleInfluences of salinity on the physiology and distribution of the Arctic coralline algae, Lithothamnion glaciale (Corallinales, Rhodophyta)en
dc.contributor.institutionDepartment of Biological and Environmental Sciences
dc.contributor.institutionAgriculture and Environmental Management Research
dc.description.statusPeer reviewed
dc.date.embargoedUntil2019-08-05
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85053421531&partnerID=8YFLogxK
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2018-10-05
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1111/jpy.12774
rioxxterms.licenseref.uriOther
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeEmbargoed


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