Surface primary producer phenology in Dease Strait, NU, Canada, examined using submersed oceanographic sensors and satellite remote sensing
Thinning sea ice cover and earlier melt in the Arctic impact primary producer (PP) phenology, causing earlier ice algal bloom termination and phytoplankton bloom commencement. However, logistic constraints limit capturing the complete seasonal evolution of PPs and their physical drivers. Here, we co...
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Canadian Science Publishing
2024-12-01
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| Series: | Arctic Science |
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| Online Access: | https://cdnsciencepub.com/doi/10.1139/as-2023-0053 |
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| author | Kiran Yendamuri Julienne Stroeve Jens K. Ehn William J. Williams Vishnu Nandan Brent G.T. Else Alexander S. Komarov Christina A. Braybrook Mike Dempsey C.J. Mundy |
| author_facet | Kiran Yendamuri Julienne Stroeve Jens K. Ehn William J. Williams Vishnu Nandan Brent G.T. Else Alexander S. Komarov Christina A. Braybrook Mike Dempsey C.J. Mundy |
| author_sort | Kiran Yendamuri |
| collection | DOAJ |
| description | Thinning sea ice cover and earlier melt in the Arctic impact primary producer (PP) phenology, causing earlier ice algal bloom termination and phytoplankton bloom commencement. However, logistic constraints limit capturing the complete seasonal evolution of PPs and their physical drivers. Here, we combine spectral irradiance data from subsurface oceanographic moorings with synthetic aperture radar backscatter and meteorological variables to study light in Dease Strait, investigating its relation to timing and magnitude of surface PPs for 2017 and 2019. Ice algal blooms in 2017 and 2019 lasted 66 and 84 days, respectively, peaking within 2 days of snow melt onset. In 2019, lower temperatures and a deeper snowpack before snow melt extended the ice algal bloom. Melt pond formation increased light transmission, enabling a short, 6–7-day under-ice phytoplankton bloom in both years that was likely nutrient-limited. The 2019 phytoplankton bloom was less productive, possibly due to the longer ice algal bloom depleting surface nutrients. After ice break-up in 2019, a 31-day late-summer bloom occurred via wind-driven mixing. Our findings suggest that the combined remote sensing technique has novel applicability in other settings, providing insights into the changing state of PP phenology, and the need for long-term Arctic observations to discern regional climate change effects. |
| format | Article |
| id | doaj-art-c86b19402f3342bbb2c2150ff043781b |
| institution | Kabale University |
| issn | 2368-7460 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Canadian Science Publishing |
| record_format | Article |
| series | Arctic Science |
| spelling | doaj-art-c86b19402f3342bbb2c2150ff043781b2024-12-02T15:40:46ZengCanadian Science PublishingArctic Science2368-74602024-12-0110467368710.1139/as-2023-0053Surface primary producer phenology in Dease Strait, NU, Canada, examined using submersed oceanographic sensors and satellite remote sensingKiran Yendamuri0Julienne Stroeve1Jens K. Ehn2William J. Williams3Vishnu Nandan4Brent G.T. Else5Alexander S. Komarov6Christina A. Braybrook7Mike Dempsey8C.J. Mundy9Centre for Earth Observation Science, Department of Environment and Geography, University of Manitoba, Winnipeg, MB, CanadaCentre for Earth Observation Science, Department of Environment and Geography, University of Manitoba, Winnipeg, MB, CanadaCentre for Earth Observation Science, Department of Environment and Geography, University of Manitoba, Winnipeg, MB, CanadaFisheries and Oceans Canada, Institute of Ocean Sciences, Sidney, BC, CanadaCentre for Earth Observation Science, Department of Environment and Geography, University of Manitoba, Winnipeg, MB, CanadaDepartment of Geography, University of Calgary, Calgary, AB, CanadaData and Assimilation and Satellite Meteorology Research Section, Environment and Climate Change Canada, Ottawa, ON, CanadaDepartment of Geography, University of Calgary, Calgary, AB, CanadaFisheries and Oceans Canada, Institute of Ocean Sciences, Sidney, BC, CanadaCentre for Earth Observation Science, Department of Environment and Geography, University of Manitoba, Winnipeg, MB, CanadaThinning sea ice cover and earlier melt in the Arctic impact primary producer (PP) phenology, causing earlier ice algal bloom termination and phytoplankton bloom commencement. However, logistic constraints limit capturing the complete seasonal evolution of PPs and their physical drivers. Here, we combine spectral irradiance data from subsurface oceanographic moorings with synthetic aperture radar backscatter and meteorological variables to study light in Dease Strait, investigating its relation to timing and magnitude of surface PPs for 2017 and 2019. Ice algal blooms in 2017 and 2019 lasted 66 and 84 days, respectively, peaking within 2 days of snow melt onset. In 2019, lower temperatures and a deeper snowpack before snow melt extended the ice algal bloom. Melt pond formation increased light transmission, enabling a short, 6–7-day under-ice phytoplankton bloom in both years that was likely nutrient-limited. The 2019 phytoplankton bloom was less productive, possibly due to the longer ice algal bloom depleting surface nutrients. After ice break-up in 2019, a 31-day late-summer bloom occurred via wind-driven mixing. Our findings suggest that the combined remote sensing technique has novel applicability in other settings, providing insights into the changing state of PP phenology, and the need for long-term Arctic observations to discern regional climate change effects.https://cdnsciencepub.com/doi/10.1139/as-2023-0053Canadian Arcticprimary productionremote sensingsynthetic aperture radarnormalized difference index |
| spellingShingle | Kiran Yendamuri Julienne Stroeve Jens K. Ehn William J. Williams Vishnu Nandan Brent G.T. Else Alexander S. Komarov Christina A. Braybrook Mike Dempsey C.J. Mundy Surface primary producer phenology in Dease Strait, NU, Canada, examined using submersed oceanographic sensors and satellite remote sensing Arctic Science Canadian Arctic primary production remote sensing synthetic aperture radar normalized difference index |
| title | Surface primary producer phenology in Dease Strait, NU, Canada, examined using submersed oceanographic sensors and satellite remote sensing |
| title_full | Surface primary producer phenology in Dease Strait, NU, Canada, examined using submersed oceanographic sensors and satellite remote sensing |
| title_fullStr | Surface primary producer phenology in Dease Strait, NU, Canada, examined using submersed oceanographic sensors and satellite remote sensing |
| title_full_unstemmed | Surface primary producer phenology in Dease Strait, NU, Canada, examined using submersed oceanographic sensors and satellite remote sensing |
| title_short | Surface primary producer phenology in Dease Strait, NU, Canada, examined using submersed oceanographic sensors and satellite remote sensing |
| title_sort | surface primary producer phenology in dease strait nu canada examined using submersed oceanographic sensors and satellite remote sensing |
| topic | Canadian Arctic primary production remote sensing synthetic aperture radar normalized difference index |
| url | https://cdnsciencepub.com/doi/10.1139/as-2023-0053 |
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