Show simple item record

dc.contributor.authorKarl, David M.
dc.contributor.authorFollett, Christopher L
dc.contributor.authorDutkiewicz, Stephanie
dc.contributor.authorInomura, Keisuke
dc.contributor.authorFollows, Michael J
dc.date.accessioned2018-10-03T17:47:56Z
dc.date.available2018-10-03T17:47:56Z
dc.date.issued2018-02
dc.date.submitted2017-10
dc.identifier.issn1751-7362
dc.identifier.issn1751-7370
dc.identifier.urihttp://hdl.handle.net/1721.1/118343
dc.description.abstractIn the North Pacific Subtropical Gyre (NPSG), an annual pulse of sinking organic carbon is observed at 4000 m between July and August, driven by large diatoms found in association with nitrogen fixing, heterocystous, cyanobacteria: Diatom-Diazotroph Associations (DDAs). Here we ask what drives the bloom of DDAs and present a simplified trait-based model of subtropical phototroph populations driven by observed, monthly averaged, environmental characteristics. The ratio of resource supply rates favors nitrogen fixation year round. The relative fitness of DDA traits is most competitive in early summer when the mixed layer is shallow, solar irradiance is high, and phosphorus and iron are relatively abundant. Later in the season, as light intensity drops and phosphorus is depleted, the traits of small unicellular diazotrophs become more competitive. The competitive transition happens in August, at the time when the DDA export event occurs. This seasonal dynamic is maintained when embedded in a more complex, global-scale, ecological model, and provides predictions for the extent of the North Pacific DDA bloom. The model provides a parsimonious and testable hypothesis for the stimulation of DDA blooms.en_US
dc.description.sponsorshipSimons Foundation (Award 329108)en_US
dc.description.sponsorshipNational Science Foundation (U.S.) (Grant OCE-1434007)en_US
dc.description.sponsorshipGordon and Betty Moore Foundation (Grant GBMF3778)en_US
dc.description.sponsorshipGordon and Betty Moore Foundation (Grant GBMF3794)en_US
dc.publisherNature Publishing Groupen_US
dc.relation.isversionofhttp://dx.doi.org/10.1038/S41396-017-0012-Xen_US
dc.rightsCreative Commons Attribution-Noncommercial-Share Alikeen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/en_US
dc.sourceNatureen_US
dc.titleSeasonal resource conditions favor a summertime increase in North Pacific diatom–diazotroph associationsen_US
dc.typeArticleen_US
dc.identifier.citationFollett, Christopher L., Stephanie Dutkiewicz, David M. Karl, Keisuke Inomura, and Michael J. Follows. “Seasonal Resource Conditions Favor a Summertime Increase in North Pacific Diatom–diazotroph Associations.” The ISME Journal 12, 6 (February 2018): 1543–1557 © 2018 The Author(s)en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciencesen_US
dc.contributor.mitauthorFollett, Christopher L
dc.contributor.mitauthorDutkiewicz, Stephanie
dc.contributor.mitauthorInomura, Keisuke
dc.contributor.mitauthorFollows, Michael J
dc.relation.journalISME Journalen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2018-09-24T16:56:27Z
dspace.orderedauthorsFollett, Christopher L.; Dutkiewicz, Stephanie; Karl, David M.; Inomura, Keisuke; Follows, Michael J.en_US
dspace.embargo.termsNen_US
dc.identifier.orcidhttps://orcid.org/0000-0002-7164-1660
dc.identifier.orcidhttps://orcid.org/0000-0002-1627-2014
dc.identifier.orcidhttps://orcid.org/0000-0002-3102-0341
mit.licensePUBLISHER_CCen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record