Physical processes driving phytoplankton production around Southampton Island, Nunavut in late summer 2018 and 2019
Climate change impacts have brought up the need for a better understanding of the rapidly changing ecosystem of the Arctic. Arctic marine ecosystems, such as around Southampton Island in Hudson Bay, are supported by phytoplankton production. In turn, phytoplankton production, which is influenced by...
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ftunivmanitoba:oai:mspace.lib.umanitoba.ca:1993/36865 2023-06-18T03:39:01+02:00 Physical processes driving phytoplankton production around Southampton Island, Nunavut in late summer 2018 and 2019 Kitching, Elizabeth Mundy, C.J. Michel, Christine Higgins, Scott (Environment and Geography) Kuzyk, Zou Zou (Earth Sciences) 2022-08-01T02:11:33Z application/pdf http://hdl.handle.net/1993/36865 eng eng http://hdl.handle.net/1993/36865 open access Southampton Island Phytoplankton production phytoplankton bloom Hudson Bay P-E curve master thesis 2022 ftunivmanitoba 2023-06-04T17:43:57Z Climate change impacts have brought up the need for a better understanding of the rapidly changing ecosystem of the Arctic. Arctic marine ecosystems, such as around Southampton Island in Hudson Bay, are supported by phytoplankton production. In turn, phytoplankton production, which is influenced by environmental conditions and processes, can impact pelagic and benthic food webs. The goal of this thesis was to determine the physical processes driving phytoplankton production around Southampton Island, Nunavut during summer. Three subgroups of differing physical characteristics of the water column were distinguished: the Northwest Narrows group (well-mixed water connecting Roes Welcome Sound and Frozen Strait), the Hudson Bay group (warmer stratified waters to the south of Southampton Island), and the Foxe group (colder stratified northeastern waters in Foxe Basin and Foxe Channel). The different physical characteristics resulted in contrasting phytoplankton production and phytoplankton bloom stages around the island. In particular, a highly productive phytoplankton bloom supported by mixing and high nutrient availability, was observed in the Northwest Narrows group. Phytoplankton production estimates in the Northwest Narrows group were higher than estimates for Hudson Bay and Foxe Basin, and comparable to those in Hudson Strait. The substantial variability phytoplankton production around Southampton Island highlights the importance of local processes for primary production in the Arctic. This also calls to the necessity for future work to identify similar regions that have the potential to support high phytoplankton production in the Arctic. October 2022 Master Thesis Arctic Climate change Foxe Basin Foxe Channel Frozen Strait Hudson Bay Hudson Strait Nunavut Phytoplankton Roes Welcome Sound Southampton Island MSpace at the University of Manitoba Arctic Foxe Basin ENVELOPE(-77.918,-77.918,65.931,65.931) Foxe Channel ENVELOPE(-79.999,-79.999,65.001,65.001) Frozen Strait ENVELOPE(-84.332,-84.332,65.751,65.751) Hudson Hudson Bay Hudson Strait ENVELOPE(-70.000,-70.000,62.000,62.000) Nunavut Roes Welcome Sound ENVELOPE(-86.666,-86.666,65.018,65.018) Southampton Island ENVELOPE(-84.501,-84.501,64.463,64.463) |
institution |
Open Polar |
collection |
MSpace at the University of Manitoba |
op_collection_id |
ftunivmanitoba |
language |
English |
topic |
Southampton Island Phytoplankton production phytoplankton bloom Hudson Bay P-E curve |
spellingShingle |
Southampton Island Phytoplankton production phytoplankton bloom Hudson Bay P-E curve Kitching, Elizabeth Physical processes driving phytoplankton production around Southampton Island, Nunavut in late summer 2018 and 2019 |
topic_facet |
Southampton Island Phytoplankton production phytoplankton bloom Hudson Bay P-E curve |
description |
Climate change impacts have brought up the need for a better understanding of the rapidly changing ecosystem of the Arctic. Arctic marine ecosystems, such as around Southampton Island in Hudson Bay, are supported by phytoplankton production. In turn, phytoplankton production, which is influenced by environmental conditions and processes, can impact pelagic and benthic food webs. The goal of this thesis was to determine the physical processes driving phytoplankton production around Southampton Island, Nunavut during summer. Three subgroups of differing physical characteristics of the water column were distinguished: the Northwest Narrows group (well-mixed water connecting Roes Welcome Sound and Frozen Strait), the Hudson Bay group (warmer stratified waters to the south of Southampton Island), and the Foxe group (colder stratified northeastern waters in Foxe Basin and Foxe Channel). The different physical characteristics resulted in contrasting phytoplankton production and phytoplankton bloom stages around the island. In particular, a highly productive phytoplankton bloom supported by mixing and high nutrient availability, was observed in the Northwest Narrows group. Phytoplankton production estimates in the Northwest Narrows group were higher than estimates for Hudson Bay and Foxe Basin, and comparable to those in Hudson Strait. The substantial variability phytoplankton production around Southampton Island highlights the importance of local processes for primary production in the Arctic. This also calls to the necessity for future work to identify similar regions that have the potential to support high phytoplankton production in the Arctic. October 2022 |
author2 |
Mundy, C.J. Michel, Christine Higgins, Scott (Environment and Geography) Kuzyk, Zou Zou (Earth Sciences) |
format |
Master Thesis |
author |
Kitching, Elizabeth |
author_facet |
Kitching, Elizabeth |
author_sort |
Kitching, Elizabeth |
title |
Physical processes driving phytoplankton production around Southampton Island, Nunavut in late summer 2018 and 2019 |
title_short |
Physical processes driving phytoplankton production around Southampton Island, Nunavut in late summer 2018 and 2019 |
title_full |
Physical processes driving phytoplankton production around Southampton Island, Nunavut in late summer 2018 and 2019 |
title_fullStr |
Physical processes driving phytoplankton production around Southampton Island, Nunavut in late summer 2018 and 2019 |
title_full_unstemmed |
Physical processes driving phytoplankton production around Southampton Island, Nunavut in late summer 2018 and 2019 |
title_sort |
physical processes driving phytoplankton production around southampton island, nunavut in late summer 2018 and 2019 |
publishDate |
2022 |
url |
http://hdl.handle.net/1993/36865 |
long_lat |
ENVELOPE(-77.918,-77.918,65.931,65.931) ENVELOPE(-79.999,-79.999,65.001,65.001) ENVELOPE(-84.332,-84.332,65.751,65.751) ENVELOPE(-70.000,-70.000,62.000,62.000) ENVELOPE(-86.666,-86.666,65.018,65.018) ENVELOPE(-84.501,-84.501,64.463,64.463) |
geographic |
Arctic Foxe Basin Foxe Channel Frozen Strait Hudson Hudson Bay Hudson Strait Nunavut Roes Welcome Sound Southampton Island |
geographic_facet |
Arctic Foxe Basin Foxe Channel Frozen Strait Hudson Hudson Bay Hudson Strait Nunavut Roes Welcome Sound Southampton Island |
genre |
Arctic Climate change Foxe Basin Foxe Channel Frozen Strait Hudson Bay Hudson Strait Nunavut Phytoplankton Roes Welcome Sound Southampton Island |
genre_facet |
Arctic Climate change Foxe Basin Foxe Channel Frozen Strait Hudson Bay Hudson Strait Nunavut Phytoplankton Roes Welcome Sound Southampton Island |
op_relation |
http://hdl.handle.net/1993/36865 |
op_rights |
open access |
_version_ |
1769003846993969152 |