Show simple item record

dc.contributor.authorCaswell, Bryony A
dc.contributor.authorFrid, Christopher LJ
dc.date.accessioned2018-10-31T01:31:27Z
dc.date.available2018-10-31T01:31:27Z
dc.date.issued2017
dc.identifier.issn0029-8549
dc.identifier.doi10.1007/s00442-016-3747-6
dc.identifier.urihttp://hdl.handle.net/10072/100578
dc.description.abstractGlobal warming during the Early Jurassic, and associated widespread ocean deoxygenation, was comparable in scale with the changes projected for the next century. This study quantifies the impact of severe global environmental change on the biological traits of marine communities that define the ecological roles and functions they deliver. We document centennial–millennial variability in the biological trait composition of Early Jurassic (Toarcian) seafloor communities and examine how this changed during the event using biological traits analysis. Environmental changes preceding the global oceanic anoxic event (OAE) produced an ecological shift leading to stressed benthic palaeocommunities with reduced resilience to the subsequent OAE. Changes in traits and ecological succession coincided with major environmental changes; and were of similar nature and magnitude to those in severely deoxygenated benthic communities today despite the very different timescales. Changes in community composition were linked to local redox conditions whereas changes in populations of opportunists were driven by primary productivity. Throughout most of the OAE substitutions by tolerant taxa conserved the trait composition and hence functioning, but periods of severe deoxygenation caused benthic defaunation that would have resulted in functional collapse. Following the OAE recovery was slow probably because the global nature of the event restricted opportunities for recruitment from outside the basin. Our findings suggest that future systems undergoing deoxygenation may initially show functional resilience, but severe global deoxygenation will impact traits and ecosystem functioning and, by limiting the species pool, will slow recovery rates.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofpagefrom1
dc.relation.ispartofpageto16
dc.relation.ispartofjournalOecologia
dc.subject.fieldofresearchEcology not elsewhere classified
dc.subject.fieldofresearchEcology
dc.subject.fieldofresearchcode060299
dc.subject.fieldofresearchcode0602
dc.titleMarine ecosystem resilience during extreme deoxygenation: the Early Jurassic oceanic anoxic event
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.facultyGriffith Sciences, Griffith School of Environment
gro.description.notepublicThis publication has been entered into Griffith Research Online as an Advanced Online Version.
gro.hasfulltextNo Full Text
gro.griffith.authorFrid, Chris L.
gro.griffith.authorCaswell, Bryony A.


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record