Prevalence, structure and properties of subsurface chlorophyll maxima in Canadian Arctic waters.
Comprehensive investigations of the Canadian Arctic during late summer and early fall revealed the widespread occurrence of long-lived subsurface chlorophyll maxima (SCM) in seasonally ice-free waters. The vertical position of the SCM corresponded with the depth of the subsurface biomass maximum (SB...
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Online Access: | https://espace.inrs.ca/id/eprint/9508/ https://espace.inrs.ca/id/eprint/9508/1/P1891.pdf https://doi.org/10.3354/meps08666 |
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ftinrsquebec:oai:espace.inrs.ca:9508 2023-05-15T14:26:49+02:00 Prevalence, structure and properties of subsurface chlorophyll maxima in Canadian Arctic waters. Martin, Johannie Tremblay, Jean-Éric Gagnon, Jonathan Tremblay, Geneviève Lapoussière, Amandine Jose, Caroline Poulin, Michel Gosselin, Michel Gratton, Yves Michel, Christine 2010 application/pdf https://espace.inrs.ca/id/eprint/9508/ https://espace.inrs.ca/id/eprint/9508/1/P1891.pdf https://doi.org/10.3354/meps08666 en eng https://espace.inrs.ca/id/eprint/9508/1/P1891.pdf Martin, Johannie, Tremblay, Jean-Éric, Gagnon, Jonathan, Tremblay, Geneviève, Lapoussière, Amandine, Jose, Caroline, Poulin, Michel, Gosselin, Michel, Gratton, Yves et Michel, Christine (2010). Prevalence, structure and properties of subsurface chlorophyll maxima in Canadian Arctic waters. Marine Ecology Progress Series , vol. 412 . p. 69-84. DOI:10.3354/meps08666 <https://doi.org/10.3354/meps08666>. doi:10.3354/meps08666 subsurface chlorophyll maximum deep chlorophyll maximum subsurface biomass maximum phytoplankton arctic nutrients nitrogen photosynthetic yield Article Évalué par les pairs 2010 ftinrsquebec https://doi.org/10.3354/meps08666 2023-02-10T11:45:40Z Comprehensive investigations of the Canadian Arctic during late summer and early fall revealed the widespread occurrence of long-lived subsurface chlorophyll maxima (SCM) in seasonally ice-free waters. The vertical position of the SCM corresponded with the depth of the subsurface biomass maximum (SBM), at least in Baffin Bay, suggesting that SCM could be an important source of carbon for the food web. Most of these SCM were located well below the pycnocline in close association with the nitracline, implying that their vertical position was driven mainly by a shortage of inorganic nitrogen in the upper euphotic zone. The diversity of SCM configurations with respect to physical properties of the water column complicates the estimation of euphotic-zone chlorophyll and primary production from surface properties. High photosynthetic yields (Fᵥ/F m) showed the phytoplankton to be photosynthetically competent and well acclimated to conditions of irradiance and nutrient supply near the surface and at the SCM. A well-defined primary nitrite maximum was associated with the SCM in the southwest Canadian Arctic, but not in the northeast where nitrite concentrations were highest much below the euphotic zone. This contrast is consistent with differences in vertical stratification, the light–dark cycle and, possibly, the physiological state and taxonomic composition of the phytoplankton community at the SCM. This study demonstrates that the SCM, once regarded as anecdotal due to under-sampling, are a dominant feature of the Arctic Ocean that should be considered in remote sensing studies and biogeochemical models. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Phytoplankton Institut national de la recherche scientifique, Québec: Espace INRS Arctic Arctic Ocean Baffin Bay Marine Ecology Progress Series 412 69 84 |
institution |
Open Polar |
collection |
Institut national de la recherche scientifique, Québec: Espace INRS |
op_collection_id |
ftinrsquebec |
language |
English |
topic |
subsurface chlorophyll maximum deep chlorophyll maximum subsurface biomass maximum phytoplankton arctic nutrients nitrogen photosynthetic yield |
spellingShingle |
subsurface chlorophyll maximum deep chlorophyll maximum subsurface biomass maximum phytoplankton arctic nutrients nitrogen photosynthetic yield Martin, Johannie Tremblay, Jean-Éric Gagnon, Jonathan Tremblay, Geneviève Lapoussière, Amandine Jose, Caroline Poulin, Michel Gosselin, Michel Gratton, Yves Michel, Christine Prevalence, structure and properties of subsurface chlorophyll maxima in Canadian Arctic waters. |
topic_facet |
subsurface chlorophyll maximum deep chlorophyll maximum subsurface biomass maximum phytoplankton arctic nutrients nitrogen photosynthetic yield |
description |
Comprehensive investigations of the Canadian Arctic during late summer and early fall revealed the widespread occurrence of long-lived subsurface chlorophyll maxima (SCM) in seasonally ice-free waters. The vertical position of the SCM corresponded with the depth of the subsurface biomass maximum (SBM), at least in Baffin Bay, suggesting that SCM could be an important source of carbon for the food web. Most of these SCM were located well below the pycnocline in close association with the nitracline, implying that their vertical position was driven mainly by a shortage of inorganic nitrogen in the upper euphotic zone. The diversity of SCM configurations with respect to physical properties of the water column complicates the estimation of euphotic-zone chlorophyll and primary production from surface properties. High photosynthetic yields (Fᵥ/F m) showed the phytoplankton to be photosynthetically competent and well acclimated to conditions of irradiance and nutrient supply near the surface and at the SCM. A well-defined primary nitrite maximum was associated with the SCM in the southwest Canadian Arctic, but not in the northeast where nitrite concentrations were highest much below the euphotic zone. This contrast is consistent with differences in vertical stratification, the light–dark cycle and, possibly, the physiological state and taxonomic composition of the phytoplankton community at the SCM. This study demonstrates that the SCM, once regarded as anecdotal due to under-sampling, are a dominant feature of the Arctic Ocean that should be considered in remote sensing studies and biogeochemical models. |
format |
Article in Journal/Newspaper |
author |
Martin, Johannie Tremblay, Jean-Éric Gagnon, Jonathan Tremblay, Geneviève Lapoussière, Amandine Jose, Caroline Poulin, Michel Gosselin, Michel Gratton, Yves Michel, Christine |
author_facet |
Martin, Johannie Tremblay, Jean-Éric Gagnon, Jonathan Tremblay, Geneviève Lapoussière, Amandine Jose, Caroline Poulin, Michel Gosselin, Michel Gratton, Yves Michel, Christine |
author_sort |
Martin, Johannie |
title |
Prevalence, structure and properties of subsurface chlorophyll maxima in Canadian Arctic waters. |
title_short |
Prevalence, structure and properties of subsurface chlorophyll maxima in Canadian Arctic waters. |
title_full |
Prevalence, structure and properties of subsurface chlorophyll maxima in Canadian Arctic waters. |
title_fullStr |
Prevalence, structure and properties of subsurface chlorophyll maxima in Canadian Arctic waters. |
title_full_unstemmed |
Prevalence, structure and properties of subsurface chlorophyll maxima in Canadian Arctic waters. |
title_sort |
prevalence, structure and properties of subsurface chlorophyll maxima in canadian arctic waters. |
publishDate |
2010 |
url |
https://espace.inrs.ca/id/eprint/9508/ https://espace.inrs.ca/id/eprint/9508/1/P1891.pdf https://doi.org/10.3354/meps08666 |
geographic |
Arctic Arctic Ocean Baffin Bay |
geographic_facet |
Arctic Arctic Ocean Baffin Bay |
genre |
Arctic Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Phytoplankton |
genre_facet |
Arctic Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Phytoplankton |
op_relation |
https://espace.inrs.ca/id/eprint/9508/1/P1891.pdf Martin, Johannie, Tremblay, Jean-Éric, Gagnon, Jonathan, Tremblay, Geneviève, Lapoussière, Amandine, Jose, Caroline, Poulin, Michel, Gosselin, Michel, Gratton, Yves et Michel, Christine (2010). Prevalence, structure and properties of subsurface chlorophyll maxima in Canadian Arctic waters. Marine Ecology Progress Series , vol. 412 . p. 69-84. DOI:10.3354/meps08666 <https://doi.org/10.3354/meps08666>. doi:10.3354/meps08666 |
op_doi |
https://doi.org/10.3354/meps08666 |
container_title |
Marine Ecology Progress Series |
container_volume |
412 |
container_start_page |
69 |
op_container_end_page |
84 |
_version_ |
1766300258648719360 |