Picophytoplankton and nanophytoplankton abundance and distribution in the southeastern Beaufort Sea (Mackenzie Shelf and Amundsen Gulf) during Fall 2002

Autores
Schloss, Irene Ruth; Nozais, Christian; Mas, Sébastien; Van Hardenberg, Bon; Carmack, Eddy; Jean Éric Tremblay; Brugel, Sonia; Demers, Serge
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The distribution of picophytoplankton (0.2?2 μm) and nanophytoplankton (2?20 μm) in the Beaufort Sea?Mackenzie Shelf and Amundsen Gulf regions during autumn, 2002 is examined relative to their ambient water mass properties (salinity, temperature and nutrients: nitrate + nitrite, phosphate, and silicate) and to the ratio of variable to maximum fluorescence, Fv/Fm. Total phytoplankton and cell abundances (b20 μm) were mainly correlated with salinity. Significant differences in picophytoplankton cell numbers were found among waters near the mouth of the Mackenzie River, ice melt waters and the underlying halocline water masses of Pacific origin. Picophytoplankton was the most abundant phytoplankton fraction during the autumnal season, probably reflecting low nitrate concentrations (surface waters average ~0.65 μM). The ratio Fv/Fm averaged 0.44, indicating that cells were still physiologically active, even though their concentrations were low (max Chl a=0.9 mg m−3). No significant differences in Fv/ Fm were evident in the different water masses, indicating that rate limiting conditions for photosynthesis and growth were uniform across the whole system, which was in a pre-winter stage, and was probably already experiencing light limitation as a result of shortening day lengths.
Fil: Schloss, Irene Ruth. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Nozais, Christian. Université du Québec a Montreal; Canadá
Fil: Mas, Sébastien. Université Montpellier II; Francia
Fil: Van Hardenberg, Bon. Institute of Ocean Sciences; Canadá
Fil: Carmack, Eddy. Institute of Ocean Sciences; Canadá
Fil: Jean Éric Tremblay. Université du Québec a Montreal; Canadá
Fil: Brugel, Sonia. Institut des Sciences de la Mer de Rimouski; Canadá
Fil: Demers, Serge. Institut des Sciences de la Mer de Rimouski; Canadá
Materia
Plancton
Mar de Beaufort
Artico
hudrografía
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/244597
Acceder
id CONICETDig_a89dfbb345806818448d076d8a136122
oai_identifier_str oai:ri.conicet.gov.ar:11336/244597
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Picophytoplankton and nanophytoplankton abundance and distribution in the southeastern Beaufort Sea (Mackenzie Shelf and Amundsen Gulf) during Fall 2002Schloss, Irene RuthNozais, ChristianMas, SébastienVan Hardenberg, BonCarmack, EddyJean Éric TremblayBrugel, SoniaDemers, SergePlanctonMar de BeaufortArticohudrografíahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The distribution of picophytoplankton (0.2?2 μm) and nanophytoplankton (2?20 μm) in the Beaufort Sea?Mackenzie Shelf and Amundsen Gulf regions during autumn, 2002 is examined relative to their ambient water mass properties (salinity, temperature and nutrients: nitrate + nitrite, phosphate, and silicate) and to the ratio of variable to maximum fluorescence, Fv/Fm. Total phytoplankton and cell abundances (b20 μm) were mainly correlated with salinity. Significant differences in picophytoplankton cell numbers were found among waters near the mouth of the Mackenzie River, ice melt waters and the underlying halocline water masses of Pacific origin. Picophytoplankton was the most abundant phytoplankton fraction during the autumnal season, probably reflecting low nitrate concentrations (surface waters average ~0.65 μM). The ratio Fv/Fm averaged 0.44, indicating that cells were still physiologically active, even though their concentrations were low (max Chl a=0.9 mg m−3). No significant differences in Fv/ Fm were evident in the different water masses, indicating that rate limiting conditions for photosynthesis and growth were uniform across the whole system, which was in a pre-winter stage, and was probably already experiencing light limitation as a result of shortening day lengths.Fil: Schloss, Irene Ruth. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Nozais, Christian. Université du Québec a Montreal; CanadáFil: Mas, Sébastien. Université Montpellier II; FranciaFil: Van Hardenberg, Bon. Institute of Ocean Sciences; CanadáFil: Carmack, Eddy. Institute of Ocean Sciences; CanadáFil: Jean Éric Tremblay. Université du Québec a Montreal; CanadáFil: Brugel, Sonia. Institut des Sciences de la Mer de Rimouski; CanadáFil: Demers, Serge. Institut des Sciences de la Mer de Rimouski; CanadáElsevier Science2008-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/244597Schloss, Irene Ruth; Nozais, Christian; Mas, Sébastien; Van Hardenberg, Bon; Carmack, Eddy; et al.; Picophytoplankton and nanophytoplankton abundance and distribution in the southeastern Beaufort Sea (Mackenzie Shelf and Amundsen Gulf) during Fall 2002; Elsevier Science; Journal of Marine Systems; 74; 3-4; 12-2008; 978-9930924-7963CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S092479630800033Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jmarsys.2008.01.004info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:28:03Zoai:ri.conicet.gov.ar:11336/244597instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:28:04.156CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Picophytoplankton and nanophytoplankton abundance and distribution in the southeastern Beaufort Sea (Mackenzie Shelf and Amundsen Gulf) during Fall 2002
title Picophytoplankton and nanophytoplankton abundance and distribution in the southeastern Beaufort Sea (Mackenzie Shelf and Amundsen Gulf) during Fall 2002
spellingShingle Picophytoplankton and nanophytoplankton abundance and distribution in the southeastern Beaufort Sea (Mackenzie Shelf and Amundsen Gulf) during Fall 2002
Schloss, Irene Ruth
Plancton
Mar de Beaufort
Artico
hudrografía
title_short Picophytoplankton and nanophytoplankton abundance and distribution in the southeastern Beaufort Sea (Mackenzie Shelf and Amundsen Gulf) during Fall 2002
title_full Picophytoplankton and nanophytoplankton abundance and distribution in the southeastern Beaufort Sea (Mackenzie Shelf and Amundsen Gulf) during Fall 2002
title_fullStr Picophytoplankton and nanophytoplankton abundance and distribution in the southeastern Beaufort Sea (Mackenzie Shelf and Amundsen Gulf) during Fall 2002
title_full_unstemmed Picophytoplankton and nanophytoplankton abundance and distribution in the southeastern Beaufort Sea (Mackenzie Shelf and Amundsen Gulf) during Fall 2002
title_sort Picophytoplankton and nanophytoplankton abundance and distribution in the southeastern Beaufort Sea (Mackenzie Shelf and Amundsen Gulf) during Fall 2002
dc.creator.none.fl_str_mv Schloss, Irene Ruth
Nozais, Christian
Mas, Sébastien
Van Hardenberg, Bon
Carmack, Eddy
Jean Éric Tremblay
Brugel, Sonia
Demers, Serge
author Schloss, Irene Ruth
author_facet Schloss, Irene Ruth
Nozais, Christian
Mas, Sébastien
Van Hardenberg, Bon
Carmack, Eddy
Jean Éric Tremblay
Brugel, Sonia
Demers, Serge
author_role author
author2 Nozais, Christian
Mas, Sébastien
Van Hardenberg, Bon
Carmack, Eddy
Jean Éric Tremblay
Brugel, Sonia
Demers, Serge
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Plancton
Mar de Beaufort
Artico
hudrografía
topic Plancton
Mar de Beaufort
Artico
hudrografía
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The distribution of picophytoplankton (0.2?2 μm) and nanophytoplankton (2?20 μm) in the Beaufort Sea?Mackenzie Shelf and Amundsen Gulf regions during autumn, 2002 is examined relative to their ambient water mass properties (salinity, temperature and nutrients: nitrate + nitrite, phosphate, and silicate) and to the ratio of variable to maximum fluorescence, Fv/Fm. Total phytoplankton and cell abundances (b20 μm) were mainly correlated with salinity. Significant differences in picophytoplankton cell numbers were found among waters near the mouth of the Mackenzie River, ice melt waters and the underlying halocline water masses of Pacific origin. Picophytoplankton was the most abundant phytoplankton fraction during the autumnal season, probably reflecting low nitrate concentrations (surface waters average ~0.65 μM). The ratio Fv/Fm averaged 0.44, indicating that cells were still physiologically active, even though their concentrations were low (max Chl a=0.9 mg m−3). No significant differences in Fv/ Fm were evident in the different water masses, indicating that rate limiting conditions for photosynthesis and growth were uniform across the whole system, which was in a pre-winter stage, and was probably already experiencing light limitation as a result of shortening day lengths.
Fil: Schloss, Irene Ruth. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Nozais, Christian. Université du Québec a Montreal; Canadá
Fil: Mas, Sébastien. Université Montpellier II; Francia
Fil: Van Hardenberg, Bon. Institute of Ocean Sciences; Canadá
Fil: Carmack, Eddy. Institute of Ocean Sciences; Canadá
Fil: Jean Éric Tremblay. Université du Québec a Montreal; Canadá
Fil: Brugel, Sonia. Institut des Sciences de la Mer de Rimouski; Canadá
Fil: Demers, Serge. Institut des Sciences de la Mer de Rimouski; Canadá
description The distribution of picophytoplankton (0.2?2 μm) and nanophytoplankton (2?20 μm) in the Beaufort Sea?Mackenzie Shelf and Amundsen Gulf regions during autumn, 2002 is examined relative to their ambient water mass properties (salinity, temperature and nutrients: nitrate + nitrite, phosphate, and silicate) and to the ratio of variable to maximum fluorescence, Fv/Fm. Total phytoplankton and cell abundances (b20 μm) were mainly correlated with salinity. Significant differences in picophytoplankton cell numbers were found among waters near the mouth of the Mackenzie River, ice melt waters and the underlying halocline water masses of Pacific origin. Picophytoplankton was the most abundant phytoplankton fraction during the autumnal season, probably reflecting low nitrate concentrations (surface waters average ~0.65 μM). The ratio Fv/Fm averaged 0.44, indicating that cells were still physiologically active, even though their concentrations were low (max Chl a=0.9 mg m−3). No significant differences in Fv/ Fm were evident in the different water masses, indicating that rate limiting conditions for photosynthesis and growth were uniform across the whole system, which was in a pre-winter stage, and was probably already experiencing light limitation as a result of shortening day lengths.
publishDate 2008
dc.date.none.fl_str_mv 2008-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/244597
Schloss, Irene Ruth; Nozais, Christian; Mas, Sébastien; Van Hardenberg, Bon; Carmack, Eddy; et al.; Picophytoplankton and nanophytoplankton abundance and distribution in the southeastern Beaufort Sea (Mackenzie Shelf and Amundsen Gulf) during Fall 2002; Elsevier Science; Journal of Marine Systems; 74; 3-4; 12-2008; 978-993
0924-7963
CONICET Digital
CONICET
url http://hdl.handle.net/11336/244597
identifier_str_mv Schloss, Irene Ruth; Nozais, Christian; Mas, Sébastien; Van Hardenberg, Bon; Carmack, Eddy; et al.; Picophytoplankton and nanophytoplankton abundance and distribution in the southeastern Beaufort Sea (Mackenzie Shelf and Amundsen Gulf) during Fall 2002; Elsevier Science; Journal of Marine Systems; 74; 3-4; 12-2008; 978-993
0924-7963
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S092479630800033X
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jmarsys.2008.01.004
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846083421856595968
score 13.22299

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