Physical and Biogeochemical Controls of the Phytoplankton Blooms in North Western Mediterranean Sea: A Multiplatform Approach Over a Complete Annual Cycle (2012–2013 DEWEX Experiment).
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| Title: | Physical and Biogeochemical Controls of the Phytoplankton Blooms in North Western Mediterranean Sea: A Multiplatform Approach Over a Complete Annual Cycle (2012–2013 DEWEX Experiment). |
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| Authors: | Mayot, Nicolas1 nicolas.mayot@obs-vlfr.fr, D'Ortenzio, Fabrizio1 dortenzio@obs-vlfr.fr, Taillandier, Vincent1, Prieur, Louis1, de Fommervault, Orens Pasqueron1, Claustre, Hervé1, Bosse, Anthony2, Testor, Pierre2, Conan, Pascal3 |
| Source: | Journal of Geophysical Research. Oceans. Dec2017, Vol. 122 Issue 12, p9999-10019. 21p. |
| Abstract: | Abstract: The North Western Mediterranean Sea exhibits recurrent and significant autumnal and spring phytoplankton blooms. The existence of these two blooms coincides with typical temperate dynamics. To determine the potential control of physical and biogeochemical factors on these phytoplankton blooms, data from a multiplatform approach (combining ships, Argo and BGC‐Argo floats, and bio‐optical gliders) were analyzed in association with satellite observations in 2012–2013. The satellite framework allowed a simultaneous analysis over the whole annual cycle of in situ observations of mixed layer depth, photosynthetical available radiation, particle backscattering, nutrients (nitrate and silicate), and chlorophyll‐a concentrations. During the year 2012–2013, satellite ocean color observations, confirmed by in situ data, have revealed the existence of two areas (or bioregions) with comparable autumnal blooms but contrasting spring blooms. In both bioregions, the ratio of the euphotic zone (defined as the isolume 0.415 mol photons m−2 d−1, Z0.415) and the MLD identified the initiation of the autumnal bloom, as well as the maximal annual increase in [Chl‐a] in spring. In fact, the autumnal phytoplankton bloom might be initiated by mixing of the summer shallowing deep chlorophyll maximum, while the spring restratification (when Z0.415/MLD ratio became >1) might induce surface phytoplankton production that largely overcomes the losses. Finally, winter deep convection events that took place in one of the bioregions induced higher net accumulation rate of phytoplankton in spring associated with a diatom‐dominated phytoplankton community principally. We suggest that very deep winter MLD lead to an increase in surface silicates availability, which favored the development of diatoms. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Geophysical Research. Oceans is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: 8gh DbLabel: GreenFILE An: 127390181 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Physical and Biogeochemical Controls of the Phytoplankton Blooms in North Western Mediterranean Sea: A Multiplatform Approach Over a Complete Annual Cycle (2012–2013 DEWEX Experiment). – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Mayot%2C+Nicolas%22">Mayot, Nicolas</searchLink><relatesTo>1</relatesTo><i> nicolas.mayot@obs-vlfr.fr</i><br /><searchLink fieldCode="AR" term="%22D'Ortenzio%2C+Fabrizio%22">D'Ortenzio, Fabrizio</searchLink><relatesTo>1</relatesTo><i> dortenzio@obs-vlfr.fr</i><br /><searchLink fieldCode="AR" term="%22Taillandier%2C+Vincent%22">Taillandier, Vincent</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Prieur%2C+Louis%22">Prieur, Louis</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22de+Fommervault%2C+Orens+Pasqueron%22">de Fommervault, Orens Pasqueron</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Claustre%2C+Hervé%22">Claustre, Hervé</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Bosse%2C+Anthony%22">Bosse, Anthony</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Testor%2C+Pierre%22">Testor, Pierre</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Conan%2C+Pascal%22">Conan, Pascal</searchLink><relatesTo>3</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Geophysical+Research%2E+Oceans%22">Journal of Geophysical Research. Oceans</searchLink>. Dec2017, Vol. 122 Issue 12, p9999-10019. 21p. – Name: Abstract Label: Abstract Group: Ab Data: Abstract: The North Western Mediterranean Sea exhibits recurrent and significant autumnal and spring phytoplankton blooms. The existence of these two blooms coincides with typical temperate dynamics. To determine the potential control of physical and biogeochemical factors on these phytoplankton blooms, data from a multiplatform approach (combining ships, Argo and BGC‐Argo floats, and bio‐optical gliders) were analyzed in association with satellite observations in 2012–2013. The satellite framework allowed a simultaneous analysis over the whole annual cycle of in situ observations of mixed layer depth, photosynthetical available radiation, particle backscattering, nutrients (nitrate and silicate), and chlorophyll‐a concentrations. During the year 2012–2013, satellite ocean color observations, confirmed by in situ data, have revealed the existence of two areas (or bioregions) with comparable autumnal blooms but contrasting spring blooms. In both bioregions, the ratio of the euphotic zone (defined as the isolume 0.415 mol photons m−2 d−1, Z0.415) and the MLD identified the initiation of the autumnal bloom, as well as the maximal annual increase in [Chl‐a] in spring. In fact, the autumnal phytoplankton bloom might be initiated by mixing of the summer shallowing deep chlorophyll maximum, while the spring restratification (when Z0.415/MLD ratio became >1) might induce surface phytoplankton production that largely overcomes the losses. Finally, winter deep convection events that took place in one of the bioregions induced higher net accumulation rate of phytoplankton in spring associated with a diatom‐dominated phytoplankton community principally. We suggest that very deep winter MLD lead to an increase in surface silicates availability, which favored the development of diatoms. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Geophysical Research. Oceans is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1002/2016JC012052 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 21 StartPage: 9999 Titles: – TitleFull: Physical and Biogeochemical Controls of the Phytoplankton Blooms in North Western Mediterranean Sea: A Multiplatform Approach Over a Complete Annual Cycle (2012–2013 DEWEX Experiment). Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Mayot, Nicolas – PersonEntity: Name: NameFull: D'Ortenzio, Fabrizio – PersonEntity: Name: NameFull: Taillandier, Vincent – PersonEntity: Name: NameFull: Prieur, Louis – PersonEntity: Name: NameFull: de Fommervault, Orens Pasqueron – PersonEntity: Name: NameFull: Claustre, Hervé – PersonEntity: Name: NameFull: Bosse, Anthony – PersonEntity: Name: NameFull: Testor, Pierre – PersonEntity: Name: NameFull: Conan, Pascal IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 12 Text: Dec2017 Type: published Y: 2017 Identifiers: – Type: issn-print Value: 21699275 Numbering: – Type: volume Value: 122 – Type: issue Value: 12 Titles: – TitleFull: Journal of Geophysical Research. Oceans Type: main |
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