Chlorophyll a in Antarctic sea ice from historical ice core data
Identifieur interne : 002500 ( Istex/Corpus ); précédent : 002499; suivant : 002501Chlorophyll a in Antarctic sea ice from historical ice core data
Auteurs : K. M. Meiners ; M. Vancoppenolle ; S. Thanassekos ; G. S. Dieckmann ; D. N. Thomas ; J. Tison ; K. R. Arrigo ; D. L. Garrison ; A. Mcminn ; D. Lannuzel ; P. Van Der Merwe ; K. M. Swadling ; W. O. Smith Jr. ; I. Melnikov ; B. RaymondSource :
- Geophysical Research Letters [ 0094-8276 ] ; 2012-11.
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
Links to Exploration step
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<sourceDesc><biblStruct><analytic><title level="a" type="main">Chlorophyll <hi rend="italic">a</hi>
in Antarctic sea ice from historical ice core data</title>
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<affiliation><mods:affiliation>E-mail: klaus.meiners@aad.gov.au</mods:affiliation>
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<affiliation><mods:affiliation>E-mail: klaus.meiners@aad.gov.au</mods:affiliation>
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<author><name sortKey="Vancoppenolle, M" sort="Vancoppenolle, M" uniqKey="Vancoppenolle M" first="M." last="Vancoppenolle">M. Vancoppenolle</name>
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<author><name sortKey="Thanassekos, S" sort="Thanassekos, S" uniqKey="Thanassekos S" first="S." last="Thanassekos">S. Thanassekos</name>
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<author><name sortKey="Dieckmann, G S" sort="Dieckmann, G S" uniqKey="Dieckmann G" first="G. S." last="Dieckmann">G. S. Dieckmann</name>
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<author><name sortKey="Arrigo, K R" sort="Arrigo, K R" uniqKey="Arrigo K" first="K. R." last="Arrigo">K. R. Arrigo</name>
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<author><name sortKey="Garrison, D L" sort="Garrison, D L" uniqKey="Garrison D" first="D. L." last="Garrison">D. L. Garrison</name>
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<author><name sortKey="Lannuzel, D" sort="Lannuzel, D" uniqKey="Lannuzel D" first="D." last="Lannuzel">D. Lannuzel</name>
<affiliation><mods:affiliation>Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Australia</mods:affiliation>
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<affiliation><mods:affiliation>Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia</mods:affiliation>
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<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>
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<term>Thickness distribution</term>
<term>Total biomass</term>
<term>Vertical distribution</term>
<term>Weddell</term>
<term>Weddell seas</term>
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<term>Marine science</term>
<term>National science foundation</term>
<term>Ocean sciences</term>
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<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>
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<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>
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<titleGroup><title type="articleCategory">Oceans</title>
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<copyright ownership="thirdParty">©2012. American Geophysical Union. All Rights Reserved.</copyright>
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<correspondenceTo>Corresponding author: K. M. Meiners, Australian Antarctic Division, Department of Sustainability, Environment, Water, Population and Communities, Channel Highway, Kingston, TAS 7050, Australia. (<email>klaus.meiners@aad.gov.au</email>
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<subjectInfo><subject href="http://psi.agu.org/taxonomy5/0400">BIOGEOSCIENCES</subject>
<subjectInfo><subject href="http://psi.agu.org/taxonomy5/0414">Biogeochemical cycles, processes, and modeling</subject>
<subject href="http://psi.agu.org/taxonomy5/0434">Data sets</subject>
<subject href="http://psi.agu.org/taxonomy5/0442">Estuarine and nearshore processes</subject>
<subject role="crossTerm" href="http://psi.agu.org/taxonomy5/0412">Biogeochemical kinetics and reaction modeling</subject>
<subject role="crossTerm" href="http://psi.agu.org/taxonomy5/0412">Biogeochemical kinetics and reaction modeling</subject>
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<subject href="http://psi.agu.org/taxonomy5/0793">Biogeochemistry</subject>
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<subject role="crossTerm" href="http://psi.agu.org/taxonomy5/4800">OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL</subject>
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<abstractGroup><abstract type="main"><p xml:id="grl29738-para-0004" label="1">Sea ice core chlorophyll <i>a</i>
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 <i>a</i>
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<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.</abstract>
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<note type="content"> Auxiliary material for this article contains a text file with a table of voyages compiled in the ASPeCt – Bio database, a figure with three example cores from the Weddell Sea, and a figure of mean normalized chl‐a profiles. Auxiliary material files may require downloading to a local drive depending on platform, browser, configuration, and size. To open auxiliary materials in a browser, click on the label. To download, Right‐click and select “Save Target As…” (PC) or CTRL‐click and select “Download Link to Disk” (Mac). Additional file information is provided in the readme.txt. Auxiliary material for this article contains a text file with a table of voyages compiled in the ASPeCt – Bio database, a figure with three example cores from the Weddell Sea, and a figure of mean normalized chl‐a profiles. Auxiliary material files may require downloading to a local drive depending on platform, browser, configuration, and size. To open auxiliary materials in a browser, click on the label. To download, Right‐click and select “Save Target As…” (PC) or CTRL‐click and select “Download Link to Disk” (Mac). Additional file information is provided in the readme.txt. Auxiliary material for this article contains a text file with a table of voyages compiled in the ASPeCt – Bio database, a figure with three example cores from the Weddell Sea, and a figure of mean normalized chl‐a profiles. Auxiliary material files may require downloading to a local drive depending on platform, browser, configuration, and size. To open auxiliary materials in a browser, click on the label. To download, Right‐click and select “Save Target As…” (PC) or CTRL‐click and select “Download Link to Disk” (Mac). Additional file information is provided in the readme.txt.Supporting Info Item: readme.txt - Text S1. Description of methods used to create and , with Table S1. - Figure S1. Three example cores from the Weddell Sea. - Figure S2. Mean normalized chl‐a profiles for the complete dataset, profiles classified as surface type, profiles classified as internal type, and profiles classified as bottom type. - Tab‐delimited Table 1. - Tab‐delimited Table 2. - </note>
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<topic authorityURI="http://psi.agu.org/taxonomy5/0442">Estuarine and nearshore processes</topic>
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<topic authorityURI="http://psi.agu.org/taxonomy5/0412">Biogeochemical kinetics and reaction modeling</topic>
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<topic authorityURI="http://psi.agu.org/taxonomy5/0700">CRYOSPHERE</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/0750">Sea ice</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/0793">Biogeochemistry</topic>
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<topic authorityURI="http://psi.agu.org/taxonomy5/1600">GLOBAL CHANGE</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/1615">Biogeochemical cycles, processes, and modeling</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/1615">Biogeochemical cycles, processes, and modeling</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/4200">OCEANOGRAPHY: GENERAL</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/4235">Estuarine processes</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/4500">OCEANOGRAPHY: PHYSICAL</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/4540">Ice mechanics and air/sea/ice exchange processes</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/4800">OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/4805">Biogeochemical cycles, processes, and modeling</topic>
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<topic>Oceans</topic>
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<identifier type="ISSN">0094-8276</identifier>
<identifier type="eISSN">1944-8007</identifier>
<identifier type="DOI">10.1002/(ISSN)1944-8007</identifier>
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<part><date>2012</date>
<detail type="volume"><caption>vol.</caption>
<number>39</number>
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<detail type="issue"><caption>no.</caption>
<number>21</number>
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<identifier type="DOI">10.1029/2012GL053478</identifier>
<identifier type="ArticleID">2012GL053478</identifier>
<accessCondition type="use and reproduction" contentType="copyright">©2012. American Geophysical Union. All Rights Reserved.</accessCondition>
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