Arctic spring awakening – Steering principles behind the phenology of vernal ice algal blooms
Marine ecosystems at high latitudes are characterized by extreme seasonal changes in light conditions, as well as a limited period of high primary production during spring and early summer. As light returns at the end of winter to Arctic ice-covered seas, a first algal bloom takes place in the botto...
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Online Access: | https://epic.awi.de/id/eprint/38668/ https://doi.org/10.1016/j.pocean.2015.07.012 https://hdl.handle.net/10013/epic.46853 |
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ftawi:oai:epic.awi.de:38668 2023-05-15T14:26:39+02:00 Arctic spring awakening – Steering principles behind the phenology of vernal ice algal blooms Leu, E. Mundy, C.J. Assmy, P. Campbell, K. Gabrielsen, T.M. Gosselin, M. Juul-Pedersen, T. Gradinger, R. 2015-08-07 https://epic.awi.de/id/eprint/38668/ https://doi.org/10.1016/j.pocean.2015.07.012 https://hdl.handle.net/10013/epic.46853 unknown Leu, E. , Mundy, C. , Assmy, P. , Campbell, K. , Gabrielsen, T. , Gosselin, M. , Juul-Pedersen, T. and Gradinger, R. (2015) Arctic spring awakening – Steering principles behind the phenology of vernal ice algal blooms , Progress in Oceanography, 139 , pp. 151-170 . doi:10.1016/j.pocean.2015.07.012 <https://doi.org/10.1016/j.pocean.2015.07.012> , hdl:10013/epic.46853 EPIC3Progress in Oceanography, 139, pp. 151-170, ISSN: 00796611 Article isiRev 2015 ftawi https://doi.org/10.1016/j.pocean.2015.07.012 2021-12-24T15:40:42Z Marine ecosystems at high latitudes are characterized by extreme seasonal changes in light conditions, as well as a limited period of high primary production during spring and early summer. As light returns at the end of winter to Arctic ice-covered seas, a first algal bloom takes place in the bottom layer of the sea ice. This bottom ice algae community develops through three distinct phases in the transition from winter to spring, starting with phase I, a predominantly net heterotroph community that has limited interaction with the pelagic or benthic realms. Phase II begins in the spring once light for photosynthesis becomes available at the ice bottom, although interaction with the water column and benthos remains limited. The transition to the final phase III is then mainly driven by a balance of atmospheric and oceanographic forcing that induce structural changes in the sea ice and ultimately the removal of algal biomass from the ice. Due to limited data availability an incomplete understanding exists of all the processes determining ice algal bloom phenology and the considerable geographic differences in sympagic algal standing stocks and primary production. We present here the first pan-Arctic compilation of available time-series data on vernal sea ice algal bloom development and identify the most important factors controlling its development and termination. Using data from the area surrounding Resolute Bay (Nunavut, Canada) as an example, we support previous investigations that snow cover on top of the ice influences sea ice algal phenology, with highest biomass development, but also earliest termination of blooms, under low snow cover. We also provide a pan-Arctic overview of sea ice algae standing stocks and primary production, and discuss the pertinent processes behind the geographic differences we observed. Finally, we assess potential future changes in vernal algal bloom phenology as a consequence of climate change, including their importance to different groups of grazers. Article in Journal/Newspaper Arctic Arctic Climate change ice algae Nunavut Resolute Bay Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Canada Nunavut Resolute Bay ENVELOPE(-94.842,-94.842,74.677,74.677) Progress in Oceanography 139 151 170 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Marine ecosystems at high latitudes are characterized by extreme seasonal changes in light conditions, as well as a limited period of high primary production during spring and early summer. As light returns at the end of winter to Arctic ice-covered seas, a first algal bloom takes place in the bottom layer of the sea ice. This bottom ice algae community develops through three distinct phases in the transition from winter to spring, starting with phase I, a predominantly net heterotroph community that has limited interaction with the pelagic or benthic realms. Phase II begins in the spring once light for photosynthesis becomes available at the ice bottom, although interaction with the water column and benthos remains limited. The transition to the final phase III is then mainly driven by a balance of atmospheric and oceanographic forcing that induce structural changes in the sea ice and ultimately the removal of algal biomass from the ice. Due to limited data availability an incomplete understanding exists of all the processes determining ice algal bloom phenology and the considerable geographic differences in sympagic algal standing stocks and primary production. We present here the first pan-Arctic compilation of available time-series data on vernal sea ice algal bloom development and identify the most important factors controlling its development and termination. Using data from the area surrounding Resolute Bay (Nunavut, Canada) as an example, we support previous investigations that snow cover on top of the ice influences sea ice algal phenology, with highest biomass development, but also earliest termination of blooms, under low snow cover. We also provide a pan-Arctic overview of sea ice algae standing stocks and primary production, and discuss the pertinent processes behind the geographic differences we observed. Finally, we assess potential future changes in vernal algal bloom phenology as a consequence of climate change, including their importance to different groups of grazers. |
format |
Article in Journal/Newspaper |
author |
Leu, E. Mundy, C.J. Assmy, P. Campbell, K. Gabrielsen, T.M. Gosselin, M. Juul-Pedersen, T. Gradinger, R. |
spellingShingle |
Leu, E. Mundy, C.J. Assmy, P. Campbell, K. Gabrielsen, T.M. Gosselin, M. Juul-Pedersen, T. Gradinger, R. Arctic spring awakening – Steering principles behind the phenology of vernal ice algal blooms |
author_facet |
Leu, E. Mundy, C.J. Assmy, P. Campbell, K. Gabrielsen, T.M. Gosselin, M. Juul-Pedersen, T. Gradinger, R. |
author_sort |
Leu, E. |
title |
Arctic spring awakening – Steering principles behind the phenology of vernal ice algal blooms |
title_short |
Arctic spring awakening – Steering principles behind the phenology of vernal ice algal blooms |
title_full |
Arctic spring awakening – Steering principles behind the phenology of vernal ice algal blooms |
title_fullStr |
Arctic spring awakening – Steering principles behind the phenology of vernal ice algal blooms |
title_full_unstemmed |
Arctic spring awakening – Steering principles behind the phenology of vernal ice algal blooms |
title_sort |
arctic spring awakening – steering principles behind the phenology of vernal ice algal blooms |
publishDate |
2015 |
url |
https://epic.awi.de/id/eprint/38668/ https://doi.org/10.1016/j.pocean.2015.07.012 https://hdl.handle.net/10013/epic.46853 |
long_lat |
ENVELOPE(-94.842,-94.842,74.677,74.677) |
geographic |
Arctic Canada Nunavut Resolute Bay |
geographic_facet |
Arctic Canada Nunavut Resolute Bay |
genre |
Arctic Arctic Climate change ice algae Nunavut Resolute Bay Sea ice |
genre_facet |
Arctic Arctic Climate change ice algae Nunavut Resolute Bay Sea ice |
op_source |
EPIC3Progress in Oceanography, 139, pp. 151-170, ISSN: 00796611 |
op_relation |
Leu, E. , Mundy, C. , Assmy, P. , Campbell, K. , Gabrielsen, T. , Gosselin, M. , Juul-Pedersen, T. and Gradinger, R. (2015) Arctic spring awakening – Steering principles behind the phenology of vernal ice algal blooms , Progress in Oceanography, 139 , pp. 151-170 . doi:10.1016/j.pocean.2015.07.012 <https://doi.org/10.1016/j.pocean.2015.07.012> , hdl:10013/epic.46853 |
op_doi |
https://doi.org/10.1016/j.pocean.2015.07.012 |
container_title |
Progress in Oceanography |
container_volume |
139 |
container_start_page |
151 |
op_container_end_page |
170 |
_version_ |
1766299930136150016 |