Bio-optical characterization of bottom ice algae in snow-covered landfast sea ice in Baffin Bay, Nunavut
During late-winter/spring, ice algae often form in a layer at the bottom of Arctic sea ice. This thesis investigates how these ice algae imbedded within a sea ice matrix absorb solar radiation, and how the spectral distribution of the radiation transmitted through the ice can be used to infer ice al...
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ftunivmanitoba:oai:mspace.lib.umanitoba.ca:1993/32513 2023-06-18T03:39:10+02:00 Bio-optical characterization of bottom ice algae in snow-covered landfast sea ice in Baffin Bay, Nunavut Quiring, Christine Mundy, C.J. (Environment and Geography), Ehn, Jens (Environment and Geography) Niemi, Andrea (Freshwater Institute, Department of Fishers and Oceans) Hanson, Mark (Environment and Geography) 2017 application/pdf http://hdl.handle.net/1993/32513 eng eng http://hdl.handle.net/1993/32513 open access Arctic Oceanography Bio-optics Ice algae master thesis 2017 ftunivmanitoba 2023-06-04T17:44:37Z During late-winter/spring, ice algae often form in a layer at the bottom of Arctic sea ice. This thesis investigates how these ice algae imbedded within a sea ice matrix absorb solar radiation, and how the spectral distribution of the radiation transmitted through the ice can be used to infer ice algae properties. During a case study of landfast ice in Baffin Bay, NU, Canada, it was found that (i) ice algae were highly shade-acclimated with absorption characteristics indicating a strong package effect, a likely result of the deep snow-cover. Furthermore, transmittance spectra (ii) revealed that ice algae attenuated significantly more radiation, (iii) showed evidence of natural fluorescence, and (iv) potentially indicated the presence of an un-sampled algal or cyanobacterial population, than that expected from extracted ice sample analyses in the laboratory. These results emphasize the important role of spectral transmittance observations in informing bio-optical and primary productivity studies of sea ice algae. October 2017 Master Thesis Arctic Baffin Bay Baffin Bay Baffin ice algae Nunavut Sea ice MSpace at the University of Manitoba Arctic Baffin Bay Canada Nunavut |
institution |
Open Polar |
collection |
MSpace at the University of Manitoba |
op_collection_id |
ftunivmanitoba |
language |
English |
topic |
Arctic Oceanography Bio-optics Ice algae |
spellingShingle |
Arctic Oceanography Bio-optics Ice algae Quiring, Christine Bio-optical characterization of bottom ice algae in snow-covered landfast sea ice in Baffin Bay, Nunavut |
topic_facet |
Arctic Oceanography Bio-optics Ice algae |
description |
During late-winter/spring, ice algae often form in a layer at the bottom of Arctic sea ice. This thesis investigates how these ice algae imbedded within a sea ice matrix absorb solar radiation, and how the spectral distribution of the radiation transmitted through the ice can be used to infer ice algae properties. During a case study of landfast ice in Baffin Bay, NU, Canada, it was found that (i) ice algae were highly shade-acclimated with absorption characteristics indicating a strong package effect, a likely result of the deep snow-cover. Furthermore, transmittance spectra (ii) revealed that ice algae attenuated significantly more radiation, (iii) showed evidence of natural fluorescence, and (iv) potentially indicated the presence of an un-sampled algal or cyanobacterial population, than that expected from extracted ice sample analyses in the laboratory. These results emphasize the important role of spectral transmittance observations in informing bio-optical and primary productivity studies of sea ice algae. October 2017 |
author2 |
Mundy, C.J. (Environment and Geography), Ehn, Jens (Environment and Geography) Niemi, Andrea (Freshwater Institute, Department of Fishers and Oceans) Hanson, Mark (Environment and Geography) |
format |
Master Thesis |
author |
Quiring, Christine |
author_facet |
Quiring, Christine |
author_sort |
Quiring, Christine |
title |
Bio-optical characterization of bottom ice algae in snow-covered landfast sea ice in Baffin Bay, Nunavut |
title_short |
Bio-optical characterization of bottom ice algae in snow-covered landfast sea ice in Baffin Bay, Nunavut |
title_full |
Bio-optical characterization of bottom ice algae in snow-covered landfast sea ice in Baffin Bay, Nunavut |
title_fullStr |
Bio-optical characterization of bottom ice algae in snow-covered landfast sea ice in Baffin Bay, Nunavut |
title_full_unstemmed |
Bio-optical characterization of bottom ice algae in snow-covered landfast sea ice in Baffin Bay, Nunavut |
title_sort |
bio-optical characterization of bottom ice algae in snow-covered landfast sea ice in baffin bay, nunavut |
publishDate |
2017 |
url |
http://hdl.handle.net/1993/32513 |
geographic |
Arctic Baffin Bay Canada Nunavut |
geographic_facet |
Arctic Baffin Bay Canada Nunavut |
genre |
Arctic Baffin Bay Baffin Bay Baffin ice algae Nunavut Sea ice |
genre_facet |
Arctic Baffin Bay Baffin Bay Baffin ice algae Nunavut Sea ice |
op_relation |
http://hdl.handle.net/1993/32513 |
op_rights |
open access |
_version_ |
1769003965193650176 |