Group 2i Isochrysidales produce characteristic alkenones reflecting sea ice distribution
dc.contributor.author | Wang, KJ | |
dc.contributor.author | Huang, Y | |
dc.contributor.author | Majaneva, M | |
dc.contributor.author | Belt, Simon | |
dc.contributor.author | Liao, S | |
dc.contributor.author | Novak, J | |
dc.contributor.author | Kartzinel, TR | |
dc.contributor.author | Herbert, TD | |
dc.contributor.author | Richter, N | |
dc.contributor.author | Cabedo-Sanz, P | |
dc.date.accessioned | 2021-01-05T18:04:00Z | |
dc.date.issued | 2021-01-04 | |
dc.identifier.issn | 2041-1723 | |
dc.identifier.issn | 2041-1723 | |
dc.identifier.other | 15 | |
dc.identifier.uri | http://hdl.handle.net/10026.1/16781 | |
dc.description.abstract |
<jats:title>Abstract</jats:title><jats:p>Alkenones are biomarkers produced solely by algae in the order Isochrysidales that have been used to reconstruct sea surface temperature (SST) since the 1980s. However, alkenone-based SST reconstructions in the northern high latitude oceans show significant bias towards warmer temperatures in core-tops, diverge from other SST proxies in down core records, and are often accompanied by anomalously high relative abundance of the C<jats:sub>37</jats:sub> tetra-unsaturated methyl alkenone (%C<jats:sub>37:4</jats:sub>). Elevated %C<jats:sub>37:4</jats:sub> is widely interpreted as an indicator of low sea surface salinity from polar water masses, but its biological source has thus far remained elusive. Here we identify a lineage of Isochrysidales that is responsible for elevated C<jats:sub>37:4</jats:sub> methyl alkenone in the northern high latitude oceans through next-generation sequencing and lab-culture experiments. This Isochrysidales lineage co-occurs widely with sea ice in marine environments and is distinct from other known marine alkenone-producers, namely <jats:italic>Emiliania huxleyi</jats:italic> and <jats:italic>Gephyrocapsa oceanica</jats:italic>. More importantly, the %C<jats:sub>37:4</jats:sub> in seawater filtered particulate organic matter and surface sediments is significantly correlated with annual mean sea ice concentrations. In sediment cores from the Svalbard region, the %C<jats:sub>37:4</jats:sub> concentration aligns with the Greenland temperature record and other qualitative regional sea ice records spanning the past 14 kyrs, reflecting sea ice concentrations quantitatively. Our findings imply that %C<jats:sub>37:4</jats:sub> is a powerful proxy for reconstructing sea ice conditions in the high latitude oceans on thousand- and, potentially, on million-year timescales.</jats:p> | |
dc.format.extent | 0-0 | |
dc.format.medium | Electronic | |
dc.language | en | |
dc.language.iso | en | |
dc.publisher | Springer Science and Business Media LLC | |
dc.title | Group 2i Isochrysidales produce characteristic alkenones reflecting sea ice distribution | |
dc.type | journal-article | |
dc.type | Journal Article | |
dc.type | Research Support, U.S. Gov't, Non-P.H.S. | |
dc.type | Research Support, Non-U.S. Gov't | |
plymouth.author-url | https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000665625900012&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008 | |
plymouth.issue | 1 | |
plymouth.volume | 12 | |
plymouth.publisher-url | https://www.nature.com/articles/s41467-020-20187-z | |
plymouth.publication-status | Published online | |
plymouth.journal | Nature Communications | |
dc.identifier.doi | 10.1038/s41467-020-20187-z | |
plymouth.organisational-group | /Plymouth | |
plymouth.organisational-group | /Plymouth/Faculty of Science and Engineering | |
plymouth.organisational-group | /Plymouth/Faculty of Science and Engineering/School of Geography, Earth and Environmental 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.place | England | |
dcterms.dateAccepted | 2020-11-12 | |
dc.rights.embargodate | 2021-1-7 | |
dc.identifier.eissn | 2041-1723 | |
dc.rights.embargoperiod | Not known | |
rioxxterms.versionofrecord | 10.1038/s41467-020-20187-z | |
rioxxterms.licenseref.uri | http://www.rioxx.net/licenses/all-rights-reserved | |
rioxxterms.licenseref.startdate | 2021-01-04 | |
rioxxterms.type | Journal Article/Review |