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1000 Titel
  • Technical note: A comparison of methods for estimating coccolith mass
1000 Autor/in
  1. Valença, Celina Rebeca |
  2. Beaufort, Luc |
  3. Hallegraeff, Gustaaf Marinus |
  4. Müller, Marius Nils |
1000 Verlag
  • Copernicus Publications
1000 Erscheinungsjahr 2024
1000 Publikationstyp
  1. Artikel |
1000 Online veröffentlicht
  • 2024-03-28
1000 Erschienen in
1000 Quellenangabe
  • 21(6):1601-1611
1000 Copyrightjahr
  • 2024
1000 Lizenz
1000 Verlagsversion
  • https://doi.org/10.5194/bg-21-1601-2024 |
1000 Publikationsstatus
1000 Begutachtungsstatus
1000 Sprache der Publikation
1000 Abstract/Summary
  • <jats:p>Abstract. The fossil record of coccolithophores dates back approximately 225 million years, and the production of their calcite platelets (coccoliths) contributes to the global carbon cycle over short and geological timescales. Variations in coccolithophore parameters (e.g. community composition, morphology, size and coccolith mass) are a key factor for ocean biogeochemical dynamics (e.g. biological carbon pump) and have been used as a palaeoproxy to understand past oceanographic conditions. Coccolith mass has been frequently estimated with different methods with electron microscopy being the most applied. Here, we compared the electron microscopy (EM) method with the Coulter multisizer (CM) (i.e. electric field disturbance) and bidirectional circular polarization (BCP) methods to estimate coccolith masses (pg CaCO3) in controlled laboratory experiments with two ecotypes of Emiliania huxleyi. Average coccolith mass estimates were in good agreement with literature data. However, mass estimates from the CM were slightly overestimated compared to EM and BCP estimates, and a correction factor (cf=0.8) is suggested to compensate for this discrepancy. The relative change in coccolith mass triggered by morphotype-specific structures and environmental parameters (i.e. seawater carbonate chemistry) was suitably captured by each of the three techniques. </jats:p>
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  1. Australian Research Council |
  2. Conselho Nacional de Desenvolvimento Científico e Tecnológico |
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  2. -
1000 Dateien
1000 Förderung
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    1000 Förderer Australian Research Council |
    1000 Förderprogramm -
    1000 Fördernummer -
  2. 1000 joinedFunding-child
    1000 Förderer Conselho Nacional de Desenvolvimento Científico e Tecnológico |
    1000 Förderprogramm -
    1000 Fördernummer -
1000 Objektart article
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1000 @id frl:6482529.rdf
1000 Erstellt am 2024-05-24T05:48:26.250+0200
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1000 Zuletzt bearbeitet Mon May 27 12:08:00 CEST 2024
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