Variability of phytoplankton light absorption in Canadian Arctic seas
Identifieur interne : 001C06 ( Istex/Corpus ); précédent : 001C05; suivant : 001C07Variability of phytoplankton light absorption in Canadian Arctic seas
Auteurs : Corinne B. Brunelle ; Pierre Larouche ; Michel GosselinSource :
- Journal of Geophysical Research: Oceans [ 0148-0227 ] ; 2012-09.
Abstract
Phytoplankton light absorption spectra (aϕ(λ)) were measured in the Canadian Arctic (i.e., the Amundsen Gulf, Canadian Arctic Archipelago, northern Baffin Bay and the Hudson Bay system) to improve algorithms used in remote‐sensing models of primary production. The absorption by algae, dominated by picophytoplankton (<5 μm), was not the major light absorption factor in the four provinces; the colored dissolved organic matter (CDOM) contributed up to 70% of total light absorption. During the fall, the low total chlorophyll a‐specific aϕ*(443) (aϕ(443)/TChl a) coefficients of the Canadian High Arctic were associated with photoacclimation processes (i.e., the package effect) occurring in light‐limited environments. Low light availability and high proportion of CDOM (absorbing strongly the ultraviolet) seem to allow the growth of phytoplankton with accessory pigments absorbing light at longer wavelengths. The ratio of photoprotective and photosynthetic carotenoids (PPC:PSC) was inversely proportional with the salinity and the cell size, and mostly decreases throughout the Canadian High Arctic during fall. In return, the highest TChla‐specific phytoplankton light absorption coefficients at the blue peak (aϕ*(443)) were observed in the Hudson Bay system from September to October (i.e., fall) as well as in the Amundsen Gulf from May to July (i.e., spring/summer). These results will ultimately allow the accurate monitoring of phytoplankton biomass and productivity evolution that is likely to take place as a result of the fast‐changing Arctic environment.
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DOI: 10.1029/2011JC007345
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Brunelle</name><affiliation><mods:affiliation>Institut des Sciences de la Mer (ISMER), Université du Québec à Rimouski, Rimouski, Québec, Canada</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: corinne.bourgaultbrunelle@uqar.qc.ca</mods:affiliation></affiliation></author><author><name sortKey="Larouche, Pierre" sort="Larouche, Pierre" uniqKey="Larouche P" first="Pierre" last="Larouche">Pierre Larouche</name><affiliation><mods:affiliation>Institut Maurice-Lamontagne, Fisheries and Oceans Canada, Mont-Joli, Québec, Canada</mods:affiliation></affiliation></author><author><name sortKey="Gosselin, Michel" sort="Gosselin, Michel" uniqKey="Gosselin M" first="Michel" last="Gosselin">Michel Gosselin</name><affiliation><mods:affiliation>Institut des Sciences de la Mer (ISMER), Université du Québec à Rimouski, Rimouski, Québec, Canada</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:7BE1EAA5F6F362FB79EE53E2FECA82D2CD6435C8</idno><date when="2012" year="2012">2012</date><idno type="doi">10.1029/2011JC007345</idno><idno type="url">https://api-v5.istex.fr/document/7BE1EAA5F6F362FB79EE53E2FECA82D2CD6435C8/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">001C06</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001C06</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Variability of phytoplankton light absorption in Canadian Arctic seas</title><author><name sortKey="Brunelle, Corinne B" sort="Brunelle, Corinne B" uniqKey="Brunelle C" first="Corinne B." last="Brunelle">Corinne B. Brunelle</name><affiliation><mods:affiliation>Institut des Sciences de la Mer (ISMER), Université du Québec à Rimouski, Rimouski, Québec, Canada</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: corinne.bourgaultbrunelle@uqar.qc.ca</mods:affiliation></affiliation></author><author><name sortKey="Larouche, Pierre" sort="Larouche, Pierre" uniqKey="Larouche P" first="Pierre" last="Larouche">Pierre Larouche</name><affiliation><mods:affiliation>Institut Maurice-Lamontagne, Fisheries and Oceans Canada, Mont-Joli, Québec, Canada</mods:affiliation></affiliation></author><author><name sortKey="Gosselin, Michel" sort="Gosselin, Michel" uniqKey="Gosselin M" first="Michel" last="Gosselin">Michel Gosselin</name><affiliation><mods:affiliation>Institut des Sciences de la Mer (ISMER), Université du Québec à Rimouski, Rimouski, Québec, Canada</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Geophysical Research: Oceans</title><title level="j" type="abbrev">J. Geophys. Res.</title><idno type="ISSN">0148-0227</idno><idno type="eISSN">2156-2202</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><date type="published" when="2012-09">2012-09</date><biblScope unit="volume">117</biblScope><biblScope unit="issue">C9</biblScope><biblScope unit="page" from="/">n/a</biblScope><biblScope unit="page" to="/">n/a</biblScope></imprint><idno type="ISSN">0148-0227</idno></series><idno type="istex">7BE1EAA5F6F362FB79EE53E2FECA82D2CD6435C8</idno><idno type="DOI">10.1029/2011JC007345</idno><idno type="ArticleID">2011JC007345</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0148-0227</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Phytoplankton light absorption spectra (aϕ(λ)) were measured in the Canadian Arctic (i.e., the Amundsen Gulf, Canadian Arctic Archipelago, northern Baffin Bay and the Hudson Bay system) to improve algorithms used in remote‐sensing models of primary production. The absorption by algae, dominated by picophytoplankton (<5 μm), was not the major light absorption factor in the four provinces; the colored dissolved organic matter (CDOM) contributed up to 70% of total light absorption. During the fall, the low total chlorophyll a‐specific aϕ*(443) (aϕ(443)/TChl a) coefficients of the Canadian High Arctic were associated with photoacclimation processes (i.e., the package effect) occurring in light‐limited environments. Low light availability and high proportion of CDOM (absorbing strongly the ultraviolet) seem to allow the growth of phytoplankton with accessory pigments absorbing light at longer wavelengths. The ratio of photoprotective and photosynthetic carotenoids (PPC:PSC) was inversely proportional with the salinity and the cell size, and mostly decreases throughout the Canadian High Arctic during fall. In return, the highest TChla‐specific phytoplankton light absorption coefficients at the blue peak (aϕ*(443)) were observed in the Hudson Bay system from September to October (i.e., fall) as well as in the Amundsen Gulf from May to July (i.e., spring/summer). These results will ultimately allow the accurate monitoring of phytoplankton biomass and productivity evolution that is likely to take place as a result of the fast‐changing Arctic environment.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>Corinne B. Brunelle</name><affiliations><json:string>Institut des Sciences de la Mer (ISMER), Université du Québec à Rimouski, Rimouski, Québec, Canada</json:string><json:string>E-mail: corinne.bourgaultbrunelle@uqar.qc.ca</json:string></affiliations></json:item><json:item><name>Pierre Larouche</name><affiliations><json:string>Institut Maurice-Lamontagne, Fisheries and Oceans Canada, Mont-Joli, Québec, Canada</json:string></affiliations></json:item><json:item><name>Michel Gosselin</name><affiliations><json:string>Institut des Sciences de la Mer (ISMER), Université du Québec à Rimouski, Rimouski, Québec, Canada</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>Arctic seas</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>photoacclimation</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>phytoplankton</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>pigments</value></json:item></subject><articleId><json:string>2011JC007345</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><qualityIndicators><score>9.164</score><pdfVersion>1.6</pdfVersion><pdfPageSize>612 x 792 pts (letter)</pdfPageSize><refBibsNative>true</refBibsNative><abstractCharCount>1571</abstractCharCount><pdfWordCount>9588</pdfWordCount><pdfCharCount>61784</pdfCharCount><pdfPageCount>17</pdfPageCount><abstractWordCount>222</abstractWordCount></qualityIndicators><title>Variability of phytoplankton light absorption in Canadian Arctic seas</title><genre><json:string>article</json:string></genre><host><title>Journal of Geophysical Research: Oceans</title><language><json:string>unknown</json:string></language><doi><json:string>10.1002/(ISSN)2156-2202c</json:string></doi><issn><json:string>0148-0227</json:string></issn><eissn><json:string>2156-2202</json:string></eissn><publisherId><json:string>JGRC</json:string></publisherId><volume>117</volume><issue>C9</issue><pages><first>n/a</first><last>n/a</last><total>17</total></pages><genre><json:string>journal</json:string></genre><subject><json:item><value>The IPY Circumpolar Flaw Lead and Arctic SOLAS Experiments: Oceanography, Geophysics, and Biogeochemistry of the Amundsen Gulf and Southern Beaufort Sea During a Year of Unprecedented Sea Ice Minima</value></json:item><json:item><value>BIOGEOSCIENCES</value></json:item><json:item><value>Bio‐optics</value></json:item><json:item><value>ELECTROMAGNETICS</value></json:item><json:item><value>Optics</value></json:item><json:item><value>OCEANOGRAPHY: GENERAL</value></json:item><json:item><value>Arctic and Antarctic oceanography</value></json:item><json:item><value>Ocean optics</value></json:item><json:item><value>OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL</value></json:item><json:item><value>Phytoplankton</value></json:item><json:item><value>GEOGRAPHIC LOCATION</value></json:item><json:item><value>Antarctica</value></json:item><json:item><value>Arctic region</value></json:item></subject></host><categories><wos><json:string>science</json:string><json:string>geosciences, multidisciplinary</json:string></wos><scienceMetrix><json:string>natural sciences</json:string><json:string>earth & environmental sciences</json:string><json:string>meteorology & atmospheric sciences</json:string></scienceMetrix></categories><publicationDate>2012</publicationDate><copyrightDate>2012</copyrightDate><doi><json:string>10.1029/2011JC007345</json:string></doi><id>7BE1EAA5F6F362FB79EE53E2FECA82D2CD6435C8</id><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api-v5.istex.fr/document/7BE1EAA5F6F362FB79EE53E2FECA82D2CD6435C8/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api-v5.istex.fr/document/7BE1EAA5F6F362FB79EE53E2FECA82D2CD6435C8/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api-v5.istex.fr/document/7BE1EAA5F6F362FB79EE53E2FECA82D2CD6435C8/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main" xml:lang="en">Variability of phytoplankton light absorption in Canadian Arctic seas</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Blackwell Publishing Ltd</publisher><availability><p>©2012. American Geophysical Union. All Rights Reserved.</p></availability><date>2012</date></publicationStmt><notesStmt><note>Tab‐delimited Table 1.Tab‐delimited Table 2.Tab‐delimited Table 3.</note></notesStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a" type="main" xml:lang="en">Variability of phytoplankton light absorption in Canadian Arctic seas</title><author xml:id="author-1"><persName><forename type="first">Corinne B.</forename><surname>Brunelle</surname></persName><email>corinne.bourgaultbrunelle@uqar.qc.ca</email><affiliation>Institut des Sciences de la Mer (ISMER), Université du Québec à Rimouski, Rimouski, Québec, Canada</affiliation></author><author xml:id="author-2"><persName><forename type="first">Pierre</forename><surname>Larouche</surname></persName><affiliation>Institut Maurice-Lamontagne, Fisheries and Oceans Canada, Mont-Joli, Québec, Canada</affiliation></author><author xml:id="author-3"><persName><forename type="first">Michel</forename><surname>Gosselin</surname></persName><affiliation>Institut des Sciences de la Mer (ISMER), Université du Québec à Rimouski, Rimouski, Québec, Canada</affiliation></author></analytic><monogr><title level="j">Journal of Geophysical Research: Oceans</title><title level="j" type="abbrev">J. Geophys. Res.</title><idno type="pISSN">0148-0227</idno><idno type="eISSN">2156-2202</idno><idno type="DOI">10.1002/(ISSN)2156-2202c</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><date type="published" when="2012-09"></date><biblScope unit="volume">117</biblScope><biblScope unit="issue">C9</biblScope><biblScope unit="page" from="/">n/a</biblScope><biblScope unit="page" to="/">n/a</biblScope></imprint></monogr><idno type="istex">7BE1EAA5F6F362FB79EE53E2FECA82D2CD6435C8</idno><idno type="DOI">10.1029/2011JC007345</idno><idno type="ArticleID">2011JC007345</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>2012</date></creation><langUsage><language ident="en">en</language></langUsage><abstract><p>Phytoplankton light absorption spectra (aϕ(λ)) were measured in the Canadian Arctic (i.e., the Amundsen Gulf, Canadian Arctic Archipelago, northern Baffin Bay and the Hudson Bay system) to improve algorithms used in remote‐sensing models of primary production. The absorption by algae, dominated by picophytoplankton (<5 μm), was not the major light absorption factor in the four provinces; the colored dissolved organic matter (CDOM) contributed up to 70% of total light absorption. During the fall, the low total chlorophyll a‐specific aϕ*(443) (aϕ(443)/TChl a) coefficients of the Canadian High Arctic were associated with photoacclimation processes (i.e., the package effect) occurring in light‐limited environments. Low light availability and high proportion of CDOM (absorbing strongly the ultraviolet) seem to allow the growth of phytoplankton with accessory pigments absorbing light at longer wavelengths. The ratio of photoprotective and photosynthetic carotenoids (PPC:PSC) was inversely proportional with the salinity and the cell size, and mostly decreases throughout the Canadian High Arctic during fall. In return, the highest TChla‐specific phytoplankton light absorption coefficients at the blue peak (aϕ*(443)) were observed in the Hudson Bay system from September to October (i.e., fall) as well as in the Amundsen Gulf from May to July (i.e., spring/summer). These results will ultimately allow the accurate monitoring of phytoplankton biomass and productivity evolution that is likely to take place as a result of the fast‐changing Arctic environment.</p></abstract><abstract style="short"><p>Characterize spatial and temporal variations of phytoplankton light absorption Determine the main sources of variability</p></abstract><textClass><keywords scheme="keyword"><list><head>keywords</head><item><term>Arctic seas</term></item><item><term>photoacclimation</term></item><item><term>phytoplankton</term></item><item><term>pigments</term></item></list></keywords></textClass><textClass><keywords scheme="Journal Subject"><list><head>index-terms</head><item><term>The IPY Circumpolar Flaw Lead and Arctic SOLAS Experiments: Oceanography, Geophysics, and Biogeochemistry of the Amundsen Gulf and Southern Beaufort Sea During a Year of Unprecedented Sea Ice Minima</term></item><item><term>BIOGEOSCIENCES</term></item><item><term>Bio‐optics</term></item><item><term>ELECTROMAGNETICS</term></item><item><term>Optics</term></item><item><term>OCEANOGRAPHY: GENERAL</term></item><item><term>Arctic and Antarctic oceanography</term></item><item><term>Ocean optics</term></item><item><term>OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL</term></item><item><term>Phytoplankton</term></item><item><term>GEOGRAPHIC LOCATION</term></item><item><term>Antarctica</term></item><item><term>Arctic region</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="2011-06-01">Received</change><change when="2012-06-24">Registration</change><change when="2012-09">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api-v5.istex.fr/document/7BE1EAA5F6F362FB79EE53E2FECA82D2CD6435C8/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component type="serialArticle" version="2.0" xml:lang="en" xml:id="jgrc12236"><header><publicationMeta level="product"><doi>10.1002/(ISSN)2156-2202c</doi><issn type="print">0148-0227</issn><issn type="electronic">2156-2202</issn><idGroup><id type="product" value="JGRC"></id><id type="coden" value="JGREA2"></id></idGroup><titleGroup><title type="main" xml:lang="en" sort="JOURNAL OF GEOPHYSICAL RESEARCH: OCEANS">Journal of Geophysical Research: Oceans</title><title type="short">J. 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All Rights Reserved.</copyright><eventGroup><event type="manuscriptReceived" date="2011-06-01"></event><event type="manuscriptRevised" date="2012-06-12"></event><event type="manuscriptAccepted" date="2012-06-24"></event><event type="firstOnline" date="2012-08-03"></event><event type="publishedOnlineFinalForm" date="2012-08-03"></event><event type="xmlConverted" agent="SPi Global Converter:AGUv5.2_TO_WileyML3Gv1.0.3 version:1.3; WileyML 3G Packaging Tool v1.0" date="2013-02-18"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.2.9 mode:FullText" date="2014-01-07"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.3.4 mode:FullText" date="2015-02-25"></event></eventGroup><numberingGroup><numbering type="pageFirst">n/a</numbering><numbering type="pageLast">n/a</numbering></numberingGroup><correspondenceTo>Corresponding author: C. B. Brunelle, Institut des Sciences de la Mer (ISMER), Université du Québec à Rimouski, 310 Allée des Ursulines, Rimouski, QC G5L 3A1, Canada. (<email>corinne.bourgaultbrunelle@uqar.qc.ca</email>)</correspondenceTo><subjectInfo><subject href="http://psi.agu.org/specialSection/IPYCFLEXP1">The IPY Circumpolar Flaw Lead and Arctic SOLAS Experiments: Oceanography, Geophysics, and Biogeochemistry of the Amundsen Gulf and Southern Beaufort Sea During a Year of Unprecedented Sea Ice Minima</subject><subject href="http://psi.agu.org/taxonomy5/0400">BIOGEOSCIENCES</subject><subjectInfo><subject href="http://psi.agu.org/taxonomy5/0422">Bio‐optics</subject></subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/0600">ELECTROMAGNETICS</subject><subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/0649">Optics</subject></subjectInfo><subject href="http://psi.agu.org/taxonomy5/4200">OCEANOGRAPHY: GENERAL</subject><subjectInfo><subject href="http://psi.agu.org/taxonomy5/4207">Arctic and Antarctic oceanography</subject><subject href="http://psi.agu.org/taxonomy5/4264">Ocean optics</subject></subjectInfo><subject href="http://psi.agu.org/taxonomy5/4800">OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL</subject><subjectInfo><subject href="http://psi.agu.org/taxonomy5/4855">Phytoplankton</subject></subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/9300">GEOGRAPHIC LOCATION</subject><subjectInfo><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/9310">Antarctica</subject><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/9315">Arctic region</subject></subjectInfo></subjectInfo><selfCitationGroup><citation xml:id="jgrc12236-cit-0000" type="self"><author><familyName>Brunelle</familyName>, <givenNames>C. B.</givenNames></author>, <author><givenNames>P.</givenNames> <familyName>Larouche</familyName></author>, and <author><givenNames>M.</givenNames> <familyName>Gosselin</familyName></author> (<pubYear year="2012">2012</pubYear>), <articleTitle>Variability of phytoplankton light absorption in Canadian Arctic seas</articleTitle>, <journalTitle>J. Geophys. Res.</journalTitle>, <vol>117</vol>, C00G17, doi:<accessionId ref="info:doi/10.1029/2011JC007345">10.1029/2011JC007345</accessionId>.</citation></selfCitationGroup><linkGroup><link type="toTypesetVersion" href="file:JGRC.JGRC12236.pdf"></link></linkGroup></publicationMeta><contentMeta><countGroup><count type="wordTotal" number="10900"></count><count type="figureTotal" number="7"></count><count type="tableTotal" number="3"></count></countGroup><titleGroup><title type="main">Variability of phytoplankton light absorption in Canadian Arctic seas</title><title type="shortAuthors">BRUNELLE ET AL.</title><title type="short">PHYTOPLANKTON LIGHT ABSORPTION SPECTRA</title></titleGroup><creators><creator xml:id="jgrc12236-cr-0001" creatorRole="author" affiliationRef="#jgrc12236-aff-0001" corresponding="yes"><personName><givenNames>Corinne B.</givenNames><familyName>Brunelle</familyName></personName><contactDetails><email>corinne.bourgaultbrunelle@uqar.qc.ca</email></contactDetails></creator><creator xml:id="jgrc12236-cr-0002" creatorRole="author" affiliationRef="#jgrc12236-aff-0002"><personName><givenNames>Pierre</givenNames><familyName>Larouche</familyName></personName></creator><creator xml:id="jgrc12236-cr-0003" creatorRole="author" affiliationRef="#jgrc12236-aff-0001"><personName><givenNames>Michel</givenNames><familyName>Gosselin</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="jgrc12236-aff-0001" countryCode="CA" type="organization"><unparsedAffiliation>Institut des Sciences de la Mer (ISMER), Université du Québec à Rimouski, Rimouski, Québec, Canada</unparsedAffiliation></affiliation><affiliation xml:id="jgrc12236-aff-0002" countryCode="CA" type="organization"><unparsedAffiliation>Institut Maurice-Lamontagne, Fisheries and Oceans Canada, Mont-Joli, Québec, Canada</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup type="author"><keyword xml:id="jgrc12236-kwd-0001">Arctic seas</keyword><keyword xml:id="jgrc12236-kwd-0002">photoacclimation</keyword><keyword xml:id="jgrc12236-kwd-0003">phytoplankton</keyword><keyword xml:id="jgrc12236-kwd-0004">pigments</keyword></keywordGroup><supportingInformation><supportingInfoItem><mediaResource alt="supplementary data" mimeType="text/plain" href="urn-x:wiley:01480227:media:jgrc12236:jgrc12236-sup-0001-t01"></mediaResource><caption>Tab‐delimited Table 1.</caption></supportingInfoItem><supportingInfoItem><mediaResource alt="supplementary data" mimeType="text/plain" href="urn-x:wiley:01480227:media:jgrc12236:jgrc12236-sup-0002-t02"></mediaResource><caption>Tab‐delimited Table 2.</caption></supportingInfoItem><supportingInfoItem><mediaResource alt="supplementary data" mimeType="text/plain" href="urn-x:wiley:01480227:media:jgrc12236:jgrc12236-sup-0003-t03"></mediaResource><caption>Tab‐delimited Table 3.</caption></supportingInfoItem></supportingInformation><abstractGroup><abstract type="main"><p xml:id="jgrc12236-para-0001" label="1">Phytoplankton light absorption spectra (a<sub><i>ϕ</i></sub>(<i>λ</i>)) were measured in the Canadian Arctic (i.e., the Amundsen Gulf, Canadian Arctic Archipelago, northern Baffin Bay and the Hudson Bay system) to improve algorithms used in remote‐sensing models of primary production. The absorption by algae, dominated by picophytoplankton (<5 <i>μ</i>m), was not the major light absorption factor in the four provinces; the colored dissolved organic matter (CDOM) contributed up to 70% of total light absorption. During the fall, the low total chlorophyll <i>a</i>‐specific a<sub><span cssStyle="text-decoration:underline"><i>ϕ</i></span></sub>*(443) (a<sub><i>ϕ</i></sub>(443)/TChl <i>a</i>) coefficients of the Canadian High Arctic were associated with photoacclimation processes (i.e., the <i>package effect</i>) occurring in light‐limited environments. Low light availability and high proportion of CDOM (absorbing strongly the ultraviolet) seem to allow the growth of phytoplankton with accessory pigments absorbing light at longer wavelengths. The ratio of photoprotective and photosynthetic carotenoids (PPC:PSC) was inversely proportional with the salinity and the cell size, and mostly decreases throughout the Canadian High Arctic during fall. In return, the highest TChl<i>a</i>‐specific phytoplankton light absorption coefficients at the blue peak (a<sub><i>ϕ</i></sub>*(443)) were observed in the Hudson Bay system from September to October (i.e., fall) as well as in the Amundsen Gulf from May to July (i.e., spring/summer). These results will ultimately allow the accurate monitoring of phytoplankton biomass and productivity evolution that is likely to take place as a result of the fast‐changing Arctic environment.</p></abstract><abstract type="short"><title type="main">Key Points</title><p xml:id="jgrc12236-para-0002"><list style="bulleted"><listItem>Characterize spatial and temporal variations of phytoplankton light absorption</listItem><listItem>Determine the main sources of variability</listItem></list></p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Variability of phytoplankton light absorption in Canadian Arctic seas</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>PHYTOPLANKTON LIGHT ABSORPTION SPECTRA</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Variability of phytoplankton light absorption in Canadian Arctic seas</title></titleInfo><name type="personal"><namePart type="given">Corinne B.</namePart><namePart type="family">Brunelle</namePart><affiliation>Institut des Sciences de la Mer (ISMER), Université du Québec à Rimouski, Rimouski, Québec, Canada</affiliation><affiliation>E-mail: corinne.bourgaultbrunelle@uqar.qc.ca</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Pierre</namePart><namePart type="family">Larouche</namePart><affiliation>Institut Maurice-Lamontagne, Fisheries and Oceans Canada, Mont-Joli, Québec, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Michel</namePart><namePart type="family">Gosselin</namePart><affiliation>Institut des Sciences de la Mer (ISMER), Université du Québec à Rimouski, Rimouski, Québec, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><dateIssued encoding="w3cdtf">2012-09</dateIssued><dateCaptured encoding="w3cdtf">2011-06-01</dateCaptured><dateValid encoding="w3cdtf">2012-06-24</dateValid><edition>Brunelle, C. B., P. Larouche, and M. Gosselin (2012), Variability of phytoplankton light absorption in Canadian Arctic seas, J. Geophys. Res., 117, C00G17, doi:10.1029/2011JC007345.</edition><copyrightDate encoding="w3cdtf">2012</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="figures">7</extent><extent unit="tables">3</extent><extent unit="words">10900</extent></physicalDescription><abstract>Phytoplankton light absorption spectra (aϕ(λ)) were measured in the Canadian Arctic (i.e., the Amundsen Gulf, Canadian Arctic Archipelago, northern Baffin Bay and the Hudson Bay system) to improve algorithms used in remote‐sensing models of primary production. The absorption by algae, dominated by picophytoplankton (<5 μm), was not the major light absorption factor in the four provinces; the colored dissolved organic matter (CDOM) contributed up to 70% of total light absorption. During the fall, the low total chlorophyll a‐specific aϕ*(443) (aϕ(443)/TChl a) coefficients of the Canadian High Arctic were associated with photoacclimation processes (i.e., the package effect) occurring in light‐limited environments. Low light availability and high proportion of CDOM (absorbing strongly the ultraviolet) seem to allow the growth of phytoplankton with accessory pigments absorbing light at longer wavelengths. The ratio of photoprotective and photosynthetic carotenoids (PPC:PSC) was inversely proportional with the salinity and the cell size, and mostly decreases throughout the Canadian High Arctic during fall. In return, the highest TChla‐specific phytoplankton light absorption coefficients at the blue peak (aϕ*(443)) were observed in the Hudson Bay system from September to October (i.e., fall) as well as in the Amundsen Gulf from May to July (i.e., spring/summer). These results will ultimately allow the accurate monitoring of phytoplankton biomass and productivity evolution that is likely to take place as a result of the fast‐changing Arctic environment.</abstract><abstract type="short">Characterize spatial and temporal variations of phytoplankton light absorption Determine the main sources of variability</abstract><note type="additional physical form">Tab‐delimited Table 1.Tab‐delimited Table 2.Tab‐delimited Table 3.</note><subject><genre>keywords</genre><topic>Arctic seas</topic><topic>photoacclimation</topic><topic>phytoplankton</topic><topic>pigments</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Geophysical Research: Oceans</title></titleInfo><titleInfo type="abbreviated"><title>J. Geophys. Res.</title></titleInfo><genre type="journal">journal</genre><subject><genre>index-terms</genre><topic authorityURI="http://psi.agu.org/specialSection/IPYCFLEXP1">The IPY Circumpolar Flaw Lead and Arctic SOLAS Experiments: Oceanography, Geophysics, and Biogeochemistry of the Amundsen Gulf and Southern Beaufort Sea During a Year of Unprecedented Sea Ice Minima</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0400">BIOGEOSCIENCES</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0422">Bio‐optics</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0600">ELECTROMAGNETICS</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0649">Optics</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4200">OCEANOGRAPHY: GENERAL</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4207">Arctic and Antarctic oceanography</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4264">Ocean optics</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4800">OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4855">Phytoplankton</topic><topic authorityURI="http://psi.agu.org/taxonomy5/9300">GEOGRAPHIC LOCATION</topic><topic authorityURI="http://psi.agu.org/taxonomy5/9310">Antarctica</topic><topic authorityURI="http://psi.agu.org/taxonomy5/9315">Arctic region</topic></subject><identifier type="ISSN">0148-0227</identifier><identifier type="eISSN">2156-2202</identifier><identifier type="DOI">10.1002/(ISSN)2156-2202c</identifier><identifier type="CODEN">JGREA2</identifier><identifier type="PublisherID">JGRC</identifier><part><date>2012</date><detail type="volume"><caption>vol.</caption><number>117</number></detail><detail type="issue"><caption>no.</caption><number>C9</number></detail><extent unit="pages"><start>n/a</start><end>n/a</end><total>17</total></extent></part></relatedItem><identifier type="istex">7BE1EAA5F6F362FB79EE53E2FECA82D2CD6435C8</identifier><identifier type="DOI">10.1029/2011JC007345</identifier><identifier type="ArticleID">2011JC007345</identifier><accessCondition type="use and reproduction" contentType="copyright">©2012. 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