Calcium isotope fractionation during coccolith formation in Emiliania huxleyi

Recently, calcium isotope fractionation in the coccolithophore Emiliania huxleyi was shown to exhibit a significant temperature dependency. An important subsequent question in this context is whether the observed fractionation patterns are caused by temperature itself or related growth rate changes....

Descripción completa

Detalles Bibliográficos
Autores: Langer, Gerald|||0000-0002-7211-4889, Gussone, Nikolaus, Nehrke, Gernot|||0000-0002-2851-3049, Riebesell, Ulf, Eisenhauer, Anton, Thoms, Silke
Tipo de recurso: artículo
Fecha de publicación:2007
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:293581
Acceso en línea:https://ddd.uab.cat/record/293581
https://dx.doi.org/urn:doi:10.1029/2006GC001422
Access Level:acceso abierto
Palabra clave:Calcification rate
Calcium isotopes
Emiliania huxleyi
SDG 14 - Life Below Water
id ES_b7c1be7634fcecc498d7ca1a35948dd3
oai_identifier_str oai:ddd.uab.cat:293581
network_acronym_str ES
network_name_str España
repository_id_str
spelling Calcium isotope fractionation during coccolith formation in Emiliania huxleyiIndependence of growth and calcification rateLanger, Gerald|||0000-0002-7211-4889Gussone, NikolausNehrke, Gernot|||0000-0002-2851-3049Riebesell, UlfEisenhauer, AntonThoms, SilkeCalcification rateCalcium isotopesEmiliania huxleyiSDG 14 - Life Below WaterRecently, calcium isotope fractionation in the coccolithophore Emiliania huxleyi was shown to exhibit a significant temperature dependency. An important subsequent question in this context is whether the observed fractionation patterns are caused by temperature itself or related growth rate changes. In order to separate growth and calcification rate effects from direct temperature effects, batch culture experiments with the coccolithophore E. huxleyi were conducted under varying light intensities. Despite large changes in cellular growth and calcification rates, calcium isotope fractionation remained constant. Independence of calcium isotope fractionation on growth and calcification was also obtained in two additional sets of experiments in which growth rates changed in response to varying calcium concentration and seawater salinity. These experiments also showed no direct effects of calcium concentration and salinity on calcium isotope fractionation. Values for calcium isotope fractionation of E. huxleyi coccoliths fell within a range of -1.0 to -1.6 (1000 lna), confirming earlier results. This range is similar to that observed in several foraminiferal species and coccolith oozes, suggesting a rather homogeneous calcium isotopic composition in marine biogenic calcite. Our data further show that the calcium isotope fractionation does not change with changing isotopic composition of seawater. This is a basic requirement for reconstructing the calcium isotopic composition of the ocean over time. 22007-01-0120072007-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/293581https://dx.doi.org/urn:doi:10.1029/2006GC001422reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengEuropean Commission https://doi.org/10.13039/501100000780 980409open accesshttp://purl.org/coar/access_right/c_abf2Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.https://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2935812026-06-06T12:50:31Z
dc.title.none.fl_str_mv Calcium isotope fractionation during coccolith formation in Emiliania huxleyi
Independence of growth and calcification rate
title Calcium isotope fractionation during coccolith formation in Emiliania huxleyi
spellingShingle Calcium isotope fractionation during coccolith formation in Emiliania huxleyi
Langer, Gerald|||0000-0002-7211-4889
Calcification rate
Calcium isotopes
Emiliania huxleyi
SDG 14 - Life Below Water
title_short Calcium isotope fractionation during coccolith formation in Emiliania huxleyi
title_full Calcium isotope fractionation during coccolith formation in Emiliania huxleyi
title_fullStr Calcium isotope fractionation during coccolith formation in Emiliania huxleyi
title_full_unstemmed Calcium isotope fractionation during coccolith formation in Emiliania huxleyi
title_sort Calcium isotope fractionation during coccolith formation in Emiliania huxleyi
dc.creator.none.fl_str_mv Langer, Gerald|||0000-0002-7211-4889
Gussone, Nikolaus
Nehrke, Gernot|||0000-0002-2851-3049
Riebesell, Ulf
Eisenhauer, Anton
Thoms, Silke
author Langer, Gerald|||0000-0002-7211-4889
author_facet Langer, Gerald|||0000-0002-7211-4889
Gussone, Nikolaus
Nehrke, Gernot|||0000-0002-2851-3049
Riebesell, Ulf
Eisenhauer, Anton
Thoms, Silke
author_role author
author2 Gussone, Nikolaus
Nehrke, Gernot|||0000-0002-2851-3049
Riebesell, Ulf
Eisenhauer, Anton
Thoms, Silke
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Calcification rate
Calcium isotopes
Emiliania huxleyi
SDG 14 - Life Below Water
topic Calcification rate
Calcium isotopes
Emiliania huxleyi
SDG 14 - Life Below Water
description Recently, calcium isotope fractionation in the coccolithophore Emiliania huxleyi was shown to exhibit a significant temperature dependency. An important subsequent question in this context is whether the observed fractionation patterns are caused by temperature itself or related growth rate changes. In order to separate growth and calcification rate effects from direct temperature effects, batch culture experiments with the coccolithophore E. huxleyi were conducted under varying light intensities. Despite large changes in cellular growth and calcification rates, calcium isotope fractionation remained constant. Independence of calcium isotope fractionation on growth and calcification was also obtained in two additional sets of experiments in which growth rates changed in response to varying calcium concentration and seawater salinity. These experiments also showed no direct effects of calcium concentration and salinity on calcium isotope fractionation. Values for calcium isotope fractionation of E. huxleyi coccoliths fell within a range of -1.0 to -1.6 (1000 lna), confirming earlier results. This range is similar to that observed in several foraminiferal species and coccolith oozes, suggesting a rather homogeneous calcium isotopic composition in marine biogenic calcite. Our data further show that the calcium isotope fractionation does not change with changing isotopic composition of seawater. This is a basic requirement for reconstructing the calcium isotopic composition of the ocean over time.
publishDate 2007
dc.date.none.fl_str_mv 2
2007-01-01
2007
2007-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/293581
https://dx.doi.org/urn:doi:10.1029/2006GC001422
url https://ddd.uab.cat/record/293581
https://dx.doi.org/urn:doi:10.1029/2006GC001422
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv European Commission https://doi.org/10.13039/501100000780 980409
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://rightsstatements.org/vocab/InC/1.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://rightsstatements.org/vocab/InC/1.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869417555315130368
score 15.811543

Similares en LA Referencia