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dc.date.accessioned2020-11-27T20:33:00Z
dc.date.available2020-11-27T20:33:00Z
dc.date.created2020-11-18T10:42:26Z
dc.date.issued2020
dc.identifier.citationHuser, Brian J. Futter, Martyn N. Bogan, Daniel Brittain, John Edward Culp, Joseph M Goedkoop, Willem Gribovskaya, Iliada Karlsson, Jan Lau, Danny C.P. Ruhland, Kathleen M Schartau, Ann Kristin Shaftel, Rebecca Smol, John P. Vrede, Tobias Lento, Jennifer . Spatial and temporal variation in Arctic freshwater chemistry— Reflecting climate-induced landscape alterations and a changing template for biodiversity. Freshwater Biology. 2020
dc.identifier.urihttp://hdl.handle.net/10852/81187
dc.description.abstract1. Freshwater chemistry across the circumpolar region was characterised using a pan-Arctic data set from 1,032 lake and 482 river stations. Temporal trends were estimated for Early (1970–1985), Middle (1986–2000), and Late (2001–2015) periods. Spatial patterns were assessed using data collected since 2001. 2. Alkalinity, pH, conductivity, sulfate, chloride, sodium, calcium, and magnesium (major ions) were generally higher in the northern-most Arctic regions than in the Near Arctic (southern-most) region. In particular, spatial patterns in pH, alkalinity, calcium, and magnesium appeared to reflect underlying geology, with more alkaline waters in the High Arctic and Sub Arctic, where sedimentary bedrock dominated. 3. Carbon and nutrients displayed latitudinal trends, with lower levels of dissolved organic carbon (DOC), total nitrogen, and (to a lesser extent) total phosphorus (TP) in the High and Low Arctic than at lower latitudes. Significantly higher nutrient levels were observed in systems impacted by permafrost thaw slumps. 4. Bulk temporal trends indicated that TP was higher during the Late period in the High Arctic, whereas it was lower in the Near Arctic. In contrast, DOC and total nitrogen were both lower during the Late period in the High Arctic sites. Major ion concentrations were higher in the Near, Sub, and Low Arctic during the Late period, but the opposite bulk trend was found in the High Arctic. 5. Significant pan-Arctic temporal trends were detected for all variables, with the most prevalent being negative TP trends in the Near and Sub Arctic, and positive trends in the High and Low Arctic (mean trends ranged from +0.57%/year in the High/Low Arctic to −2.2%/year in the Near Arctic), indicating widespread nutrient enrichment at higher latitudes and oligotrophication at lower latitudes. 6. The divergent P trends across regions may be explained by changes in deposition and climate, causing decreased catchment transport of P in the south (e.g. increased soil binding and trapping in terrestrial vegetation) and increased P availability in the north (deepening of the active layer of the permafrost and soil/sediment sloughing). Other changes in concentrations of major ions and DOC were consistent with projected effects of ongoing climate change. Given the ongoing warming across the Arctic, these region-specific changes are likely to have even greater effects on Arctic water quality, biota, ecosystem function and services, and human well-being in the future. biogeochemistry, eutrophication, lakes, oligotrophication, rivers
dc.languageEN
dc.publisherBlackwell Science Ltd.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleSpatial and temporal variation in Arctic freshwater chemistry— Reflecting climate-induced landscape alterations and a changing template for biodiversity
dc.typeJournal article
dc.creator.authorHuser, Brian J.
dc.creator.authorFutter, Martyn N.
dc.creator.authorBogan, Daniel
dc.creator.authorBrittain, John Edward
dc.creator.authorCulp, Joseph M
dc.creator.authorGoedkoop, Willem
dc.creator.authorGribovskaya, Iliada
dc.creator.authorKarlsson, Jan
dc.creator.authorLau, Danny C.P.
dc.creator.authorRuhland, Kathleen M
dc.creator.authorSchartau, Ann Kristin
dc.creator.authorShaftel, Rebecca
dc.creator.authorSmol, John P.
dc.creator.authorVrede, Tobias
dc.creator.authorLento, Jennifer
cristin.unitcode185,28,8,4
cristin.unitnameFerskvannsøkologi - entomologi
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1
dc.identifier.cristin1849137
dc.identifier.bibliographiccitationinfo:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Freshwater Biology&rft.volume=&rft.spage=&rft.date=2020
dc.identifier.jtitleFreshwater Biology
dc.identifier.doihttps://doi.org/10.1111/fwb.13645
dc.identifier.urnURN:NBN:no-84284
dc.subject.nviVDP::Zoologiske og botaniske fag: 480
dc.type.documentTidsskriftartikkel
dc.type.peerreviewedPeer reviewed
dc.source.issn0046-5070
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/81187/2/SchartauSpatialFreshwaterBiology2020hybrid.pdf
dc.type.versionPublishedVersion
cristin.articleidfwb.13645


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