Chlorophyll a in Antarctic sea ice from historical ice core data
Identifieur interne : 002500 ( Istex/Curation ); précédent : 002499; suivant : 002501Chlorophyll a in Antarctic sea ice from historical ice core data
Auteurs : K. M. Meiners [Australie] ; M. Vancoppenolle [France] ; S. Thanassekos [Australie] ; G. S. Dieckmann [Allemagne] ; D. N. Thomas [Royaume-Uni, Finlande, Danemark] ; J. Tison [Belgique] ; K. R. Arrigo [États-Unis] ; D. L. Garrison [États-Unis] ; A. Mcminn [Australie] ; D. Lannuzel [Australie] ; P. Van Der Merwe [Australie] ; K. M. Swadling [Australie] ; W. O. Smith Jr. [États-Unis] ; I. Melnikov [Russie] ; B. Raymond [Australie]Source :
- Geophysical Research Letters [ 0094-8276 ] ; 2012-11.
Descripteurs français
- Wicri :
- topic : Biomasse.
English descriptors
- KwdEn :
- Ackley, Algal, Algal biomass, Algal distribution, Antarctic, Antarctic climate, Antarctic marine, Arrigo, Assemblage type, Australian antarctic division, Auxiliary material, Biomass, Bottom communities, Bottom layers, Brine, Chlorophyll, Core data, Core length, Core length categories, Core length class, Core sections, Dataset, Dieckmann, Early spring, Eumetsat osisaf, Geophys, Indian sector, Interior communities, Marine science, National science foundation, Ocean sciences, Physical aspect climatology, Primary production, Profile shape, Regional differences, Relative contribution, Research centre, Scientific committee, Seasonal cycle, Snow loading, Southern ocean, Standard deviation, Surface communities, Thickness distribution, Total biomass, Vertical distribution, Weddell, Weddell seas, West weddell, Western weddell, Worby.
- Teeft :
- Ackley, Algal, Algal biomass, Algal distribution, Antarctic, Antarctic climate, Antarctic marine, Arrigo, Assemblage type, Australian antarctic division, Auxiliary material, Biomass, Bottom communities, Bottom layers, Brine, Chlorophyll, Core data, Core length, Core length categories, Core length class, Core sections, Dataset, Dieckmann, Early spring, Eumetsat osisaf, Geophys, Indian sector, Interior communities, Marine science, National science foundation, Ocean sciences, Physical aspect climatology, Primary production, Profile shape, Regional differences, Relative contribution, Research centre, Scientific committee, Seasonal cycle, Snow loading, Southern ocean, Standard deviation, Surface communities, Thickness distribution, Total biomass, Vertical distribution, Weddell, Weddell seas, West weddell, Western weddell, Worby.
Abstract
Sea ice core chlorophyll a data are used to describe the seasonal, regional and vertical distribution of algal biomass in Southern Ocean pack ice. The Antarctic Sea Ice Processes and Climate – Biology (ASPeCt – Bio) circumpolar dataset consists of 1300 ice cores collected during 32 cruises over a period of 25 years. The analyses show that integrated sea ice chlorophyll apeaks in early spring and late austral summer, which is consistent with theories on light and nutrient limitation. The results indicate that on a circum‐Antarctic scale, surface, internal and bottom sea ice layers contribute equally to integrated biomass, but vertical distribution shows distinct differences among six regions around the continent. The vertical distribution of sea ice algal biomass depends on sea ice thickness, with surface communities most commonly associated with thin ice (<0.4 m), and ice of moderate thickness (0.4–1.0 m) having the highest probability of forming bottom communities.
Url:
DOI: 10.1029/2012GL053478
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M." last="Meiners">K. M. Meiners</name><affiliation wicri:level="1"><mods:affiliation>Australian Antarctic Division, Department of Sustainability, Environment, Water, Population and Communities, Kingston, Tasmania, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Australian Antarctic Division, Department of Sustainability, Environment, Water, Population and Communities, Kingston, Tasmania</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Tasmania</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: klaus.meiners@aad.gov.au</mods:affiliation><country wicri:rule="url">Australie</country></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: klaus.meiners@aad.gov.au</mods:affiliation><country wicri:rule="url">Australie</country></affiliation></author><author><name sortKey="Vancoppenolle, M" sort="Vancoppenolle, M" uniqKey="Vancoppenolle M" first="M." last="Vancoppenolle">M. Vancoppenolle</name><affiliation wicri:level="1"><mods:affiliation>Laboratoire d'Océanographie et du Climat (CNRS/UPMC/IRD/MNHN), IPSL, Paris, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire d'Océanographie et du Climat (CNRS/UPMC/IRD/MNHN), IPSL, Paris</wicri:regionArea></affiliation></author><author><name sortKey="Thanassekos, S" sort="Thanassekos, S" uniqKey="Thanassekos S" first="S." last="Thanassekos">S. Thanassekos</name><affiliation wicri:level="1"><mods:affiliation>Commission for the Conservation of Antarctic Marine Living Resources, Hobart, Tasmania, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Commission for the Conservation of Antarctic Marine Living Resources, Hobart, Tasmania</wicri:regionArea></affiliation></author><author><name sortKey="Dieckmann, G S" sort="Dieckmann, G S" uniqKey="Dieckmann G" first="G. S." last="Dieckmann">G. S. Dieckmann</name><affiliation wicri:level="1"><mods:affiliation>Alfred Wegener Institute for Polar and Marine Science, Bremerhaven, Germany</mods:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Alfred Wegener Institute for Polar and Marine Science, Bremerhaven</wicri:regionArea></affiliation></author><author><name sortKey="Thomas, D N" sort="Thomas, D N" uniqKey="Thomas D" first="D. N." last="Thomas">D. N. Thomas</name><affiliation wicri:level="1"><mods:affiliation>School of Ocean Sciences, Bangor University, Anglesey, UK</mods:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>School of Ocean Sciences, Bangor University, Anglesey</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Finnish Environment Institute, Helsinki, Finland</mods:affiliation><country xml:lang="fr">Finlande</country><wicri:regionArea>Finnish Environment Institute, Helsinki</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Arctic Centre, Aarhus University, Aarhus, Denmark</mods:affiliation><country xml:lang="fr">Danemark</country><wicri:regionArea>Arctic Centre, Aarhus University, Aarhus</wicri:regionArea></affiliation></author><author><name sortKey="Tison, J" sort="Tison, J" uniqKey="Tison J" first="J." last="Tison">J. Tison</name><affiliation wicri:level="1"><mods:affiliation>Laboratoire de Glaciologie, Université Libre de Bruxelles, Brussels, Belgium</mods:affiliation><country xml:lang="fr">Belgique</country><wicri:regionArea>Laboratoire de Glaciologie, Université Libre de Bruxelles, Brussels</wicri:regionArea></affiliation></author><author><name sortKey="Arrigo, K R" sort="Arrigo, K R" uniqKey="Arrigo K" first="K. R." last="Arrigo">K. R. Arrigo</name><affiliation wicri:level="1"><mods:affiliation>Department of Environmental Earth System Science, Stanford University, Stanford, California, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Environmental Earth System Science, Stanford University, Stanford, California</wicri:regionArea></affiliation></author><author><name sortKey="Garrison, D L" sort="Garrison, D L" uniqKey="Garrison D" first="D. L." last="Garrison">D. L. Garrison</name><affiliation wicri:level="1"><mods:affiliation>Biological Oceanography Program, Division of Ocean Sciences, National Science Foundation, Arlington, Virginia, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Biological Oceanography Program, Division of Ocean Sciences, National Science Foundation, Arlington, Virginia</wicri:regionArea></affiliation></author><author><name sortKey="Mcminn, A" sort="Mcminn, A" uniqKey="Mcminn A" first="A." last="Mcminn">A. Mcminn</name><affiliation wicri:level="1"><mods:affiliation>Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania</wicri:regionArea></affiliation></author><author><name sortKey="Lannuzel, D" sort="Lannuzel, D" uniqKey="Lannuzel D" first="D." last="Lannuzel">D. Lannuzel</name><affiliation wicri:level="1"><mods:affiliation>Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Tasmania</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania</wicri:regionArea></affiliation></author><author><name sortKey="Van Der Merwe, P" sort="Van Der Merwe, P" uniqKey="Van Der Merwe P" first="P." last="Van Der Merwe">P. Van Der Merwe</name><affiliation wicri:level="1"><mods:affiliation>Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Tasmania</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania</wicri:regionArea></affiliation></author><author><name sortKey="Swadling, K M" sort="Swadling, K M" uniqKey="Swadling K" first="K. M." last="Swadling">K. M. Swadling</name><affiliation wicri:level="1"><mods:affiliation>Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania</wicri:regionArea></affiliation></author><author><name sortKey="Smith Jr, W O" sort="Smith Jr, W O" uniqKey="Smith Jr W" first="W. O." last="Smith Jr.">W. O. Smith Jr.</name><affiliation wicri:level="1"><mods:affiliation>Virginia Institute of Marine Science, College of William and Mary, Gloucester Point, Virginia, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Virginia Institute of Marine Science, College of William and Mary, Gloucester Point, Virginia</wicri:regionArea></affiliation></author><author><name sortKey="Melnikov, I" sort="Melnikov, I" uniqKey="Melnikov I" first="I." last="Melnikov">I. Melnikov</name><affiliation wicri:level="1"><mods:affiliation>P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia</mods:affiliation><country xml:lang="fr">Russie</country><wicri:regionArea>P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow</wicri:regionArea></affiliation></author><author><name sortKey="Raymond, B" sort="Raymond, B" uniqKey="Raymond B" first="B." last="Raymond">B. Raymond</name><affiliation wicri:level="1"><mods:affiliation>Australian Antarctic Division, Department of Sustainability, Environment, Water, Population and Communities, Kingston, Tasmania, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Australian Antarctic Division, Department of Sustainability, Environment, Water, Population and Communities, Kingston, Tasmania</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Tasmania</wicri:regionArea></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Geophysical Research Letters</title><title level="j" type="alt">GEOPHYSICAL RESEARCH LETTERS</title><idno type="ISSN">0094-8276</idno><idno type="eISSN">1944-8007</idno><imprint><biblScope unit="vol">39</biblScope><biblScope unit="issue">21</biblScope><biblScope unit="page-count">5</biblScope><date type="published" when="2012-11">2012-11</date></imprint><idno type="ISSN">0094-8276</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0094-8276</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Ackley</term><term>Algal</term><term>Algal biomass</term><term>Algal distribution</term><term>Antarctic</term><term>Antarctic climate</term><term>Antarctic marine</term><term>Arrigo</term><term>Assemblage type</term><term>Australian antarctic division</term><term>Auxiliary material</term><term>Biomass</term><term>Bottom communities</term><term>Bottom layers</term><term>Brine</term><term>Chlorophyll</term><term>Core data</term><term>Core length</term><term>Core length categories</term><term>Core length class</term><term>Core sections</term><term>Dataset</term><term>Dieckmann</term><term>Early spring</term><term>Eumetsat osisaf</term><term>Geophys</term><term>Indian sector</term><term>Interior communities</term><term>Marine science</term><term>National science foundation</term><term>Ocean sciences</term><term>Physical aspect climatology</term><term>Primary production</term><term>Profile shape</term><term>Regional differences</term><term>Relative contribution</term><term>Research centre</term><term>Scientific committee</term><term>Seasonal cycle</term><term>Snow loading</term><term>Southern ocean</term><term>Standard deviation</term><term>Surface communities</term><term>Thickness distribution</term><term>Total biomass</term><term>Vertical distribution</term><term>Weddell</term><term>Weddell seas</term><term>West weddell</term><term>Western weddell</term><term>Worby</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Ackley</term><term>Algal</term><term>Algal biomass</term><term>Algal distribution</term><term>Antarctic</term><term>Antarctic climate</term><term>Antarctic marine</term><term>Arrigo</term><term>Assemblage type</term><term>Australian antarctic division</term><term>Auxiliary material</term><term>Biomass</term><term>Bottom communities</term><term>Bottom layers</term><term>Brine</term><term>Chlorophyll</term><term>Core data</term><term>Core length</term><term>Core length categories</term><term>Core length class</term><term>Core sections</term><term>Dataset</term><term>Dieckmann</term><term>Early spring</term><term>Eumetsat osisaf</term><term>Geophys</term><term>Indian sector</term><term>Interior communities</term><term>Marine science</term><term>National science foundation</term><term>Ocean sciences</term><term>Physical aspect climatology</term><term>Primary production</term><term>Profile shape</term><term>Regional differences</term><term>Relative contribution</term><term>Research centre</term><term>Scientific committee</term><term>Seasonal cycle</term><term>Snow loading</term><term>Southern ocean</term><term>Standard deviation</term><term>Surface communities</term><term>Thickness distribution</term><term>Total biomass</term><term>Vertical distribution</term><term>Weddell</term><term>Weddell seas</term><term>West weddell</term><term>Western weddell</term><term>Worby</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Biomasse</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract">Sea ice core chlorophyll a data are used to describe the seasonal, regional and vertical distribution of algal biomass in Southern Ocean pack ice. The Antarctic Sea Ice Processes and Climate – Biology (ASPeCt – Bio) circumpolar dataset consists of 1300 ice cores collected during 32 cruises over a period of 25 years. The analyses show that integrated sea ice chlorophyll apeaks in early spring and late austral summer, which is consistent with theories on light and nutrient limitation. The results indicate that on a circum‐Antarctic scale, surface, internal and bottom sea ice layers contribute equally to integrated biomass, but vertical distribution shows distinct differences among six regions around the continent. The vertical distribution of sea ice algal biomass depends on sea ice thickness, with surface communities most commonly associated with thin ice (<0.4 m), and ice of moderate thickness (0.4–1.0 m) having the highest probability of forming bottom communities.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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