Contribution of under‐ice primary production to an ice‐edge upwelling phytoplankton bloom in the Canadian Beaufort Sea
Identifieur interne : 002027 ( Main/Exploration ); précédent : 002026; suivant : 002028Contribution of under‐ice primary production to an ice‐edge upwelling phytoplankton bloom in the Canadian Beaufort Sea
Auteurs : C. J. Mundy [Canada] ; Michel Gosselin [Canada] ; Jens Ehn [France] ; Yves Gratton [Canada] ; Andrea Rossnagel [Canada] ; David G. Barber [Canada] ; Johannie Martin [Canada] ; Jean-Éric Tremblay [Canada] ; Molly Palmer [États-Unis] ; Kevin R. Arrigo [États-Unis] ; Gérald Darnis [Canada] ; Louis Fortier [Canada] ; Brent Else [Canada] ; Tim Papakyriakou [Canada]Source :
- Geophysical Research Letters [ 0094-8276 ] ; 2009-09.
Abstract
The Canadian Beaufort Sea has been categorized as an oligotrophic system with the potential for enhanced production due to a nutrient‐rich intermediate layer of Pacific‐origin waters. Using under‐ice hydrographic data collected near the ice‐edge of a shallow Arctic bay, we documented an ice‐edge upwelling event that brought nutrient‐rich waters to the surface during June 2008. The event resulted in a 3‐week long phytoplankton bloom that produced an estimated 31 g C m−2 of new production. This value was approximately twice that of previous estimates for annual production in the region, demonstrating the importance of ice‐edge upwelling to the local marine ecosystem. Under‐ice primary production estimates of up to 0.31 g C m−2 d−1 showed that this production was not negligible, contributing up to 22% of the daily averaged production of the ice‐edge bloom. It is suggested that under‐ice blooms are a widespread yet under‐documented phenomenon in polar regions, which could increase in importance with the Arctic's thinning ice cover and subsequent increase in transmitted irradiance to the under‐ice environment.
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DOI: 10.1029/2009GL038837
Affiliations:
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Res. Lett.</title><idno type="ISSN">0094-8276</idno><idno type="eISSN">1944-8007</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><date type="published" when="2009-09">2009-09</date><biblScope unit="volume">36</biblScope><biblScope unit="issue">17</biblScope><biblScope unit="page" from="/">n/a</biblScope><biblScope unit="page" to="/">n/a</biblScope></imprint><idno type="ISSN">0094-8276</idno></series><idno type="istex">D9E894C27A8EC483978014716BA1675CE1FFFFE7</idno><idno type="DOI">10.1029/2009GL038837</idno><idno type="ArticleID">2009GL038837</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0094-8276</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">The Canadian Beaufort Sea has been categorized as an oligotrophic system with the potential for enhanced production due to a nutrient‐rich intermediate layer of Pacific‐origin waters. Using under‐ice hydrographic data collected near the ice‐edge of a shallow Arctic bay, we documented an ice‐edge upwelling event that brought nutrient‐rich waters to the surface during June 2008. The event resulted in a 3‐week long phytoplankton bloom that produced an estimated 31 g C m−2 of new production. This value was approximately twice that of previous estimates for annual production in the region, demonstrating the importance of ice‐edge upwelling to the local marine ecosystem. Under‐ice primary production estimates of up to 0.31 g C m−2 d−1 showed that this production was not negligible, contributing up to 22% of the daily averaged production of the ice‐edge bloom. It is suggested that under‐ice blooms are a widespread yet under‐documented phenomenon in polar regions, which could increase in importance with the Arctic's thinning ice cover and subsequent increase in transmitted irradiance to the under‐ice environment.</div></front></TEI><affiliations><list><country><li>Canada</li><li>France</li><li>États-Unis</li></country><region><li>Manitoba</li></region><settlement><li>Winnipeg</li></settlement><orgName><li>Université du Manitoba</li></orgName></list><tree><country name="Canada"><noRegion><name sortKey="Mundy, C J" sort="Mundy, C J" uniqKey="Mundy C" first="C. J." last="Mundy">C. J. Mundy</name></noRegion><name sortKey="Barber, David G" sort="Barber, David G" uniqKey="Barber D" first="David G." last="Barber">David G. Barber</name><name sortKey="Darnis, Gerald" sort="Darnis, Gerald" uniqKey="Darnis G" first="Gérald" last="Darnis">Gérald Darnis</name><name sortKey="Else, Brent" sort="Else, Brent" uniqKey="Else B" first="Brent" last="Else">Brent Else</name><name sortKey="Fortier, Louis" sort="Fortier, Louis" uniqKey="Fortier L" first="Louis" last="Fortier">Louis Fortier</name><name sortKey="Gosselin, Michel" sort="Gosselin, Michel" uniqKey="Gosselin M" first="Michel" last="Gosselin">Michel Gosselin</name><name sortKey="Gratton, Yves" sort="Gratton, Yves" uniqKey="Gratton Y" first="Yves" last="Gratton">Yves Gratton</name><name sortKey="Martin, Johannie" sort="Martin, Johannie" uniqKey="Martin J" first="Johannie" last="Martin">Johannie Martin</name><name sortKey="Mundy, C J" sort="Mundy, C J" uniqKey="Mundy C" first="C. J." last="Mundy">C. J. Mundy</name><name sortKey="Papakyriakou, Tim" sort="Papakyriakou, Tim" uniqKey="Papakyriakou T" first="Tim" last="Papakyriakou">Tim Papakyriakou</name><name sortKey="Rossnagel, Andrea" sort="Rossnagel, Andrea" uniqKey="Rossnagel A" first="Andrea" last="Rossnagel">Andrea Rossnagel</name><name sortKey="Tremblay, Jean Ic" sort="Tremblay, Jean Ic" uniqKey="Tremblay J" first="Jean-Éric" last="Tremblay">Jean-Éric Tremblay</name></country><country name="France"><noRegion><name sortKey="Ehn, Jens" sort="Ehn, Jens" uniqKey="Ehn J" first="Jens" last="Ehn">Jens Ehn</name></noRegion></country><country name="États-Unis"><noRegion><name sortKey="Palmer, Molly" sort="Palmer, Molly" uniqKey="Palmer M" first="Molly" last="Palmer">Molly Palmer</name></noRegion><name sortKey="Arrigo, Kevin R" sort="Arrigo, Kevin R" uniqKey="Arrigo K" first="Kevin R." last="Arrigo">Kevin R. Arrigo</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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