Atmospheric forcing and photo-acclimation of phytoplankton fall blooms in Hudson Bay
Pulses of ocean primary productivity during the fall season are frequent in the mid-latitudes when ocean cooling and wind-driven turbulence erode the surface stratification and allow the injection of nutrients into the euphotic zone. This phenomenon is often referred to as a phytoplankton fall bloom...
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ftunivalberta:oai:era.library.ualberta.ca:8ad3299d-a6c0-4ac1-a24f-ceea518c44e7 2024-06-23T07:53:33+00:00 Atmospheric forcing and photo-acclimation of phytoplankton fall blooms in Hudson Bay Barbedo, Lucas Belanger, Simon Lukovich, Jennifer V. Myers, Paul G. Tremblay, Jean-Eric 2022-01-01 https://era.library.ualberta.ca/items/8ad3299d-a6c0-4ac1-a24f-ceea518c44e7 https://doi.org/10.7939/r3-mjze-fc55 English eng https://era.library.ualberta.ca/items/8ad3299d-a6c0-4ac1-a24f-ceea518c44e7 doi:10.7939/r3-mjze-fc55 http://creativecommons.org/licenses/by/4.0/ Phytoplankton blooms Carbon to chlorophyll ratio Satellite ocean color Convection Wind-driven turbulence Carbon cycle Hudson Bay Article (Published) 2022 ftunivalberta https://doi.org/10.7939/r3-mjze-fc55 2024-06-03T03:09:00Z Pulses of ocean primary productivity during the fall season are frequent in the mid-latitudes when ocean cooling and wind-driven turbulence erode the surface stratification and allow the injection of nutrients into the euphotic zone. This phenomenon is often referred to as a phytoplankton fall bloom, and can play an essential role in the survival of marine species during winter. In Hudson Bay, we found that pelagic fall blooms are triggered when the convective mixing, forced mainly by atmospheric cooling and to a lesser extent to wind-driven turbulence, expands the mixed layer, ventilates the pycnocline, and likely erodes the nitracline. Ocean color observations were used to assess the seasonal variability of phytoplankton photoacclimation state from the ratio of phytoplankton carbon (Cphy) to chlorophyll-a concentration ([chla]). Cphy was estimated using the satellite-derived particulate backscattering coefficient (bbp)aftersubtractionofthe non-algal backscattering background.We found a systematic increase in Cphy and Cphy:[chla] from mid-summer to fall season indicating that fall blooms are potentially productive in term of organic carbon fixation. Article in Journal/Newspaper Hudson Bay University of Alberta: Era - Education and Research Archive Hudson Bay Hudson |
institution |
Open Polar |
collection |
University of Alberta: Era - Education and Research Archive |
op_collection_id |
ftunivalberta |
language |
English |
topic |
Phytoplankton blooms Carbon to chlorophyll ratio Satellite ocean color Convection Wind-driven turbulence Carbon cycle Hudson Bay |
spellingShingle |
Phytoplankton blooms Carbon to chlorophyll ratio Satellite ocean color Convection Wind-driven turbulence Carbon cycle Hudson Bay Barbedo, Lucas Belanger, Simon Lukovich, Jennifer V. Myers, Paul G. Tremblay, Jean-Eric Atmospheric forcing and photo-acclimation of phytoplankton fall blooms in Hudson Bay |
topic_facet |
Phytoplankton blooms Carbon to chlorophyll ratio Satellite ocean color Convection Wind-driven turbulence Carbon cycle Hudson Bay |
description |
Pulses of ocean primary productivity during the fall season are frequent in the mid-latitudes when ocean cooling and wind-driven turbulence erode the surface stratification and allow the injection of nutrients into the euphotic zone. This phenomenon is often referred to as a phytoplankton fall bloom, and can play an essential role in the survival of marine species during winter. In Hudson Bay, we found that pelagic fall blooms are triggered when the convective mixing, forced mainly by atmospheric cooling and to a lesser extent to wind-driven turbulence, expands the mixed layer, ventilates the pycnocline, and likely erodes the nitracline. Ocean color observations were used to assess the seasonal variability of phytoplankton photoacclimation state from the ratio of phytoplankton carbon (Cphy) to chlorophyll-a concentration ([chla]). Cphy was estimated using the satellite-derived particulate backscattering coefficient (bbp)aftersubtractionofthe non-algal backscattering background.We found a systematic increase in Cphy and Cphy:[chla] from mid-summer to fall season indicating that fall blooms are potentially productive in term of organic carbon fixation. |
format |
Article in Journal/Newspaper |
author |
Barbedo, Lucas Belanger, Simon Lukovich, Jennifer V. Myers, Paul G. Tremblay, Jean-Eric |
author_facet |
Barbedo, Lucas Belanger, Simon Lukovich, Jennifer V. Myers, Paul G. Tremblay, Jean-Eric |
author_sort |
Barbedo, Lucas |
title |
Atmospheric forcing and photo-acclimation of phytoplankton fall blooms in Hudson Bay |
title_short |
Atmospheric forcing and photo-acclimation of phytoplankton fall blooms in Hudson Bay |
title_full |
Atmospheric forcing and photo-acclimation of phytoplankton fall blooms in Hudson Bay |
title_fullStr |
Atmospheric forcing and photo-acclimation of phytoplankton fall blooms in Hudson Bay |
title_full_unstemmed |
Atmospheric forcing and photo-acclimation of phytoplankton fall blooms in Hudson Bay |
title_sort |
atmospheric forcing and photo-acclimation of phytoplankton fall blooms in hudson bay |
publishDate |
2022 |
url |
https://era.library.ualberta.ca/items/8ad3299d-a6c0-4ac1-a24f-ceea518c44e7 https://doi.org/10.7939/r3-mjze-fc55 |
geographic |
Hudson Bay Hudson |
geographic_facet |
Hudson Bay Hudson |
genre |
Hudson Bay |
genre_facet |
Hudson Bay |
op_relation |
https://era.library.ualberta.ca/items/8ad3299d-a6c0-4ac1-a24f-ceea518c44e7 doi:10.7939/r3-mjze-fc55 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.7939/r3-mjze-fc55 |
_version_ |
1802645283396386816 |