Simulation of an artificial upwelling using immersed in situ phytoplankton microcosms
00000 ăWOS:000369212600010 International audience The inflow of deep seawater in the surface layer by an Ocean Thermal Energy Conversion (OTEC) plant will generate artificial upwelling. In order to study the potential impact on biogeochemical processes that could result, in situ microcosms were desi...
Published in: | Journal of Experimental Marine Biology and Ecology |
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Main Authors: | , , , , |
Other Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2016
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Online Access: | https://hal.science/hal-01483213 https://doi.org/10.1016/j.jembe.2015.11.006 |
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ftunivbrest:oai:HAL:hal-01483213v1 |
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openpolar |
institution |
Open Polar |
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Université de Bretagne Occidentale: HAL |
op_collection_id |
ftunivbrest |
language |
English |
topic |
ACL Artificial upwelling atlantic-ocean coastal waters diatom blooms Food web growth Incubation experiment Intertropical area Microcosms north-atlantic nutrient Ocean Thermal Energy Conversion pacific Phytoplankton prochlorococcus surface waters [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
ACL Artificial upwelling atlantic-ocean coastal waters diatom blooms Food web growth Incubation experiment Intertropical area Microcosms north-atlantic nutrient Ocean Thermal Energy Conversion pacific Phytoplankton prochlorococcus surface waters [SDE.BE]Environmental Sciences/Biodiversity and Ecology Giraud, Mélanie Boye, Marie Garcon, Veronique Donval, Anne de La Broise, Denis Simulation of an artificial upwelling using immersed in situ phytoplankton microcosms |
topic_facet |
ACL Artificial upwelling atlantic-ocean coastal waters diatom blooms Food web growth Incubation experiment Intertropical area Microcosms north-atlantic nutrient Ocean Thermal Energy Conversion pacific Phytoplankton prochlorococcus surface waters [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
00000 ăWOS:000369212600010 International audience The inflow of deep seawater in the surface layer by an Ocean Thermal Energy Conversion (OTEC) plant will generate artificial upwelling. In order to study the potential impact on biogeochemical processes that could result, in situ microcosms were designed to simulate seawater plant discharge and these were deployed off the Caribbean coast of Martinique. Seawater was collected in ultra-clean conditions at maximum chlorophyll a concentrations (45 m depth). The water was then mixed with either 2% or 10% deep seawater (1100 m depth) and put in 2.3 L polycarbonate bottles. These microcosms were immersed for 6 days at 45 m depth on a 220 m mooring. Samples from the surrounding environment and from the microcosms were analyzed by pigment quantification, counting of picophytoplankton groups and macronutrient analyses. Similar trends in the evolutions of the phytoplankton populations were observed over time between the control microcosms (without addition of deep seawater) and the surrounding environment, suggesting that these microcosms can be used as a realistic representation of the natural surrounding waters over a 6-day incubation period. Microcosm enrichment with 10% deep seawater induced a shift in the phytoplankton assemblage towards the development of diatoms, haptophytes, and Prochlorococcus, whereas 2% enrichment only led to an increase in the Prochlorococcus population. |
author2 |
Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) France Energies Marines Brest |
format |
Article in Journal/Newspaper |
author |
Giraud, Mélanie Boye, Marie Garcon, Veronique Donval, Anne de La Broise, Denis |
author_facet |
Giraud, Mélanie Boye, Marie Garcon, Veronique Donval, Anne de La Broise, Denis |
author_sort |
Giraud, Mélanie |
title |
Simulation of an artificial upwelling using immersed in situ phytoplankton microcosms |
title_short |
Simulation of an artificial upwelling using immersed in situ phytoplankton microcosms |
title_full |
Simulation of an artificial upwelling using immersed in situ phytoplankton microcosms |
title_fullStr |
Simulation of an artificial upwelling using immersed in situ phytoplankton microcosms |
title_full_unstemmed |
Simulation of an artificial upwelling using immersed in situ phytoplankton microcosms |
title_sort |
simulation of an artificial upwelling using immersed in situ phytoplankton microcosms |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.science/hal-01483213 https://doi.org/10.1016/j.jembe.2015.11.006 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0022-0981 Journal of Experimental Marine Biology and Ecology https://hal.science/hal-01483213 Journal of Experimental Marine Biology and Ecology, 2016, 475, pp.80-88. ⟨10.1016/j.jembe.2015.11.006⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jembe.2015.11.006 hal-01483213 https://hal.science/hal-01483213 doi:10.1016/j.jembe.2015.11.006 |
op_doi |
https://doi.org/10.1016/j.jembe.2015.11.006 |
container_title |
Journal of Experimental Marine Biology and Ecology |
container_volume |
475 |
container_start_page |
80 |
op_container_end_page |
88 |
_version_ |
1802647678850433024 |
spelling |
ftunivbrest:oai:HAL:hal-01483213v1 2024-06-23T07:55:12+00:00 Simulation of an artificial upwelling using immersed in situ phytoplankton microcosms Giraud, Mélanie Boye, Marie Garcon, Veronique Donval, Anne de La Broise, Denis Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) France Energies Marines Brest 2016-02 https://hal.science/hal-01483213 https://doi.org/10.1016/j.jembe.2015.11.006 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jembe.2015.11.006 hal-01483213 https://hal.science/hal-01483213 doi:10.1016/j.jembe.2015.11.006 ISSN: 0022-0981 Journal of Experimental Marine Biology and Ecology https://hal.science/hal-01483213 Journal of Experimental Marine Biology and Ecology, 2016, 475, pp.80-88. ⟨10.1016/j.jembe.2015.11.006⟩ ACL Artificial upwelling atlantic-ocean coastal waters diatom blooms Food web growth Incubation experiment Intertropical area Microcosms north-atlantic nutrient Ocean Thermal Energy Conversion pacific Phytoplankton prochlorococcus surface waters [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2016 ftunivbrest https://doi.org/10.1016/j.jembe.2015.11.006 2024-06-03T23:59:41Z 00000 ăWOS:000369212600010 International audience The inflow of deep seawater in the surface layer by an Ocean Thermal Energy Conversion (OTEC) plant will generate artificial upwelling. In order to study the potential impact on biogeochemical processes that could result, in situ microcosms were designed to simulate seawater plant discharge and these were deployed off the Caribbean coast of Martinique. Seawater was collected in ultra-clean conditions at maximum chlorophyll a concentrations (45 m depth). The water was then mixed with either 2% or 10% deep seawater (1100 m depth) and put in 2.3 L polycarbonate bottles. These microcosms were immersed for 6 days at 45 m depth on a 220 m mooring. Samples from the surrounding environment and from the microcosms were analyzed by pigment quantification, counting of picophytoplankton groups and macronutrient analyses. Similar trends in the evolutions of the phytoplankton populations were observed over time between the control microcosms (without addition of deep seawater) and the surrounding environment, suggesting that these microcosms can be used as a realistic representation of the natural surrounding waters over a 6-day incubation period. Microcosm enrichment with 10% deep seawater induced a shift in the phytoplankton assemblage towards the development of diatoms, haptophytes, and Prochlorococcus, whereas 2% enrichment only led to an increase in the Prochlorococcus population. Article in Journal/Newspaper North Atlantic Université de Bretagne Occidentale: HAL Pacific Journal of Experimental Marine Biology and Ecology 475 80 88 |