dc.contributor.author
Hetzinger, S.
dc.contributor.author
Pfeiffer, M.
dc.contributor.author
Dullo, W. -Chr.
dc.contributor.author
Zinke, J.
dc.contributor.author
Garbe-Schoenberg, D.
dc.date.accessioned
2018-06-08T03:47:06Z
dc.date.available
2016-10-10T11:29:53.132Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/15909
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-20096
dc.description.abstract
Coral reefs are biologically diverse ecosystems threatened with effective
collapse under rapid climate change, in particular by recent increases in
ocean temperatures. Coral bleaching has occurred during major El Niño warming
events, at times leading to the die-off of entire coral reefs. Here we present
records of stable isotopic composition, Sr/Ca ratios and extension rate
(1940–2004) in coral aragonite from a northern Venezuelan site, where reefs
were strongly impacted by bleaching following the 1997–98 El Niño. We assess
the impact of past warming events on coral extension rates and geochemical
proxies. A marked decrease in coral (Pseudodiploria strigosa) extension rates
coincides with a baseline shift to more negative values in oxygen and carbon
isotopic composition after 1997–98, while a neighboring coral (Siderastrea
siderea) recovered to pre-bleaching extension rates simultaneously. However,
other stressors, besides high temperature, might also have influenced coral
physiology and geochemistry. Coastal Venezuelan reefs were exposed to a series
of extreme environmental fluctuations since the mid-1990s, i.e. upwelling,
extreme rainfall and sediment input from landslides. This work provides
important new data on the potential impacts of multiple regional stress events
on coral isotopic compositions and raises questions about the long-term
influence on coral-based paleoclimate reconstructions.
en
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Environmental impact
dc.subject
Marine biology
dc.subject
Palaeoceanography
dc.subject
Stable isotope analysis
dc.subject.ddc
500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie
dc.title
A change in coral extension rates and stable isotopes after El Niño-induced
coral bleaching and regional stress events
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation
Scientific Reports. - 6 (2016), Artikel Nr. 32879
dcterms.bibliographicCitation.doi
10.1038/srep32879
dcterms.bibliographicCitation.url
http://www.nature.com/articles/srep32879
refubium.affiliation
Geowissenschaften
de
refubium.mycore.fudocsId
FUDOCS_document_000000025526
refubium.note.author
Der Artikel wurde in einer Open-Access-Zeitschrift publiziert.
refubium.resourceType.isindependentpub
no
refubium.mycore.derivateId
FUDOCS_derivate_000000007201
dcterms.accessRights.openaire
open access