Bloom dynamics in early opening waters of the Arctic Ocean
2006; Wiley; Volume: 51; Issue: 2 Linguagem: Inglês
10.4319/lo.2006.51.2.0900
ISSN1939-5604
AutoresJean‐Éric Tremblay, Christine Michel, Keith A. Hobson, Michel Gosselin, Neil M. Price,
Tópico(s)Methane Hydrates and Related Phenomena
ResumoLimnology and OceanographyVolume 51, Issue 2 p. 900-912 ArticleFree Access Bloom dynamics in early opening waters of the Arctic Ocean Jean-Éric Tremblay, Corresponding Author Jean-Éric Tremblay Department of Biology, McGill University, 1205 Dr. Penfield, Montréal, Québec H3A 1B1, CanadaPresent address: Département de biologie, Université Laval, Québec, Qué– bec G1K 7P4, Canada.Corresponding author ([email protected]).Search for more papers by this authorChristine Michel, Christine Michel Freshwater Institute, Fisheries and Oceans Canada, 501 University Crescent, Winnipeg, Manitoba R3T 2N6, CanadaSearch for more papers by this authorKeith A. Hobson, Keith A. Hobson Prairie and Northern Wildlife Research Center, Canadian Wildlife Service, Saskatoon, Saskatchewan S7N OX4, CanadaSearch for more papers by this authorMichel Gosselin, Michel Gosselin Institut des sciences de la mer (ISMER), Université du Québec á Rimouski, 310 allée des Ursulines, Rimouski, Québec G5L 3A1, CanadaSearch for more papers by this authorNeil M. Price, Neil M. Price Department of Biology, McGill University, 1205 Dr. Penfield, Montréal, Québec H3A 1B1, CanadaSearch for more papers by this author Jean-Éric Tremblay, Corresponding Author Jean-Éric Tremblay Department of Biology, McGill University, 1205 Dr. Penfield, Montréal, Québec H3A 1B1, CanadaPresent address: Département de biologie, Université Laval, Québec, Qué– bec G1K 7P4, Canada.Corresponding author ([email protected]).Search for more papers by this authorChristine Michel, Christine Michel Freshwater Institute, Fisheries and Oceans Canada, 501 University Crescent, Winnipeg, Manitoba R3T 2N6, CanadaSearch for more papers by this authorKeith A. Hobson, Keith A. Hobson Prairie and Northern Wildlife Research Center, Canadian Wildlife Service, Saskatoon, Saskatchewan S7N OX4, CanadaSearch for more papers by this authorMichel Gosselin, Michel Gosselin Institut des sciences de la mer (ISMER), Université du Québec á Rimouski, 310 allée des Ursulines, Rimouski, Québec G5L 3A1, CanadaSearch for more papers by this authorNeil M. Price, Neil M. Price Department of Biology, McGill University, 1205 Dr. Penfield, Montréal, Québec H3A 1B1, CanadaSearch for more papers by this author First published: 10 March 2006 https://doi.org/10.4319/lo.2006.51.2.0900Citations: 159 AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract We measured the isotopic composition and accumulation of particulate organic matter (POM) and the uptake of carbon (C) and nitrogen (N) in an early bloom of the most productive recurring polynya of the Arctic Ocean. The estimated compensation irradiance at the onset of the bloom was similar to the average for the North Atlantic Ocean, implying that shallow mixing was of critical importance for the bloomÂs early initiation. Planktonic POM had a much lower δ13C than ice POM, suggesting that ice-algae contributed little to the pelagic biomass. The overall isotopic fractionation of pelagic N during bloom development was consistent with in situ diatom growth under saturating irradiance and limiting NO3-. Soon after the ice cleared, rapid physiological changes induced an order of magnitude increase in the C and NO3- uptake capacity of diatoms, leading to very high f ratios (NO3- uptake : total N uptake). Most of the NO3- taken up appeared in the POM, so that little net release of reduced N occurred during the period of active growth. Given the tight coupling between photosynthesis and NO3- uptake under N limitation, the magnitude of primary production in the Arctic Ocean is expected to respond to changes in N supply. Citing Literature Volume51, Issue2March 2006Pages 900-912 RelatedInformation
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