The physical and chemical limnology of Yukon’s largest lake, Lhù’ààn Mân’ (Kluane Lake), prior to the 2016 ‘A’ą̈y Chù’ diversion
Despite increasing evidence that large northern lakes are rapidly changing due to climate change, descriptive baseline studies of their physicochemical properties are largely lacking, limiting our ability to detect or predict change. This study represents a comprehensive scientific assessment of the...
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Canadian Science Publishing
2021
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ftdoajarticles:oai:doaj.org/article:6dda443946e84ac0aed2351d2aa0ff9b 2023-05-15T14:23:42+02:00 The physical and chemical limnology of Yukon’s largest lake, Lhù’ààn Mân’ (Kluane Lake), prior to the 2016 ‘A’ą̈y Chù’ diversion Ellorie A. McKnight Heidi Swanson Janice Brahney David S. Hik 2021-09-01T00:00:00Z https://doi.org/10.1139/as-2020-0012 https://doaj.org/article/6dda443946e84ac0aed2351d2aa0ff9b EN FR eng fre Canadian Science Publishing https://doi.org/10.1139/as-2020-0012 https://doaj.org/toc/2368-7460 doi:10.1139/as-2020-0012 2368-7460 https://doaj.org/article/6dda443946e84ac0aed2351d2aa0ff9b Arctic Science, Vol 7, Iss 3, Pp 655-678 (2021) lhù’ààn mân’ (kluane lake) ‘a’ą̈y chù’ (slims river) physical limnology climate change large northern lakes Environmental sciences GE1-350 Environmental engineering TA170-171 article 2021 ftdoajarticles https://doi.org/10.1139/as-2020-0012 2022-12-31T12:55:10Z Despite increasing evidence that large northern lakes are rapidly changing due to climate change, descriptive baseline studies of their physicochemical properties are largely lacking, limiting our ability to detect or predict change. This study represents a comprehensive scientific assessment of the limnology of Yukon’s largest lake: Lhù’ààn Mân’ (Kluane Lake), an important waterbody for local and First Nation communities, and key habitat for trout and salmon. Water sample and instrument data generated throughout 2015 describe distinct regions within the lake and their respective seasonal variability. A deep, glacially-influenced southern basin was characterized by cold, turbid, poorly stratified, unproductive, and nutrient-poor conditions; a shallower northwestern region (Tthe Kaala Daagur (Brooks/Little Arm)) was warmer, fully mixed, and more productive; a northeast region (’Ùha K’ènji (Talbot/Big Arm)) was clear and stratified with intermediate depth, temperature, productivity, and nutrient concentrations; and a central region had intermediate physicochemical conditions relative to the other three. This variability demonstrates the need for adequate spatial (within lake) and temporal (between seasons) monitoring of large northern lakes. In 2016, glacier recession within the watershed resulted in diversion of the lake’s primary inflow (‘A’ą̈y Chù’ (Slims River)). Our results, when used together with Indigenous knowledge, form a historical reference that enables assessments of the potential ecological consequences to Lhù’ààn Mân’. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Kluane Lake ENVELOPE(-138.773,-138.773,61.261,61.261) Slims River ENVELOPE(-138.537,-138.537,60.995,60.995) Arctic Science 7 3 655 678 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English French |
topic |
lhù’ààn mân’ (kluane lake) ‘a’ą̈y chù’ (slims river) physical limnology climate change large northern lakes Environmental sciences GE1-350 Environmental engineering TA170-171 |
spellingShingle |
lhù’ààn mân’ (kluane lake) ‘a’ą̈y chù’ (slims river) physical limnology climate change large northern lakes Environmental sciences GE1-350 Environmental engineering TA170-171 Ellorie A. McKnight Heidi Swanson Janice Brahney David S. Hik The physical and chemical limnology of Yukon’s largest lake, Lhù’ààn Mân’ (Kluane Lake), prior to the 2016 ‘A’ą̈y Chù’ diversion |
topic_facet |
lhù’ààn mân’ (kluane lake) ‘a’ą̈y chù’ (slims river) physical limnology climate change large northern lakes Environmental sciences GE1-350 Environmental engineering TA170-171 |
description |
Despite increasing evidence that large northern lakes are rapidly changing due to climate change, descriptive baseline studies of their physicochemical properties are largely lacking, limiting our ability to detect or predict change. This study represents a comprehensive scientific assessment of the limnology of Yukon’s largest lake: Lhù’ààn Mân’ (Kluane Lake), an important waterbody for local and First Nation communities, and key habitat for trout and salmon. Water sample and instrument data generated throughout 2015 describe distinct regions within the lake and their respective seasonal variability. A deep, glacially-influenced southern basin was characterized by cold, turbid, poorly stratified, unproductive, and nutrient-poor conditions; a shallower northwestern region (Tthe Kaala Daagur (Brooks/Little Arm)) was warmer, fully mixed, and more productive; a northeast region (’Ùha K’ènji (Talbot/Big Arm)) was clear and stratified with intermediate depth, temperature, productivity, and nutrient concentrations; and a central region had intermediate physicochemical conditions relative to the other three. This variability demonstrates the need for adequate spatial (within lake) and temporal (between seasons) monitoring of large northern lakes. In 2016, glacier recession within the watershed resulted in diversion of the lake’s primary inflow (‘A’ą̈y Chù’ (Slims River)). Our results, when used together with Indigenous knowledge, form a historical reference that enables assessments of the potential ecological consequences to Lhù’ààn Mân’. |
format |
Article in Journal/Newspaper |
author |
Ellorie A. McKnight Heidi Swanson Janice Brahney David S. Hik |
author_facet |
Ellorie A. McKnight Heidi Swanson Janice Brahney David S. Hik |
author_sort |
Ellorie A. McKnight |
title |
The physical and chemical limnology of Yukon’s largest lake, Lhù’ààn Mân’ (Kluane Lake), prior to the 2016 ‘A’ą̈y Chù’ diversion |
title_short |
The physical and chemical limnology of Yukon’s largest lake, Lhù’ààn Mân’ (Kluane Lake), prior to the 2016 ‘A’ą̈y Chù’ diversion |
title_full |
The physical and chemical limnology of Yukon’s largest lake, Lhù’ààn Mân’ (Kluane Lake), prior to the 2016 ‘A’ą̈y Chù’ diversion |
title_fullStr |
The physical and chemical limnology of Yukon’s largest lake, Lhù’ààn Mân’ (Kluane Lake), prior to the 2016 ‘A’ą̈y Chù’ diversion |
title_full_unstemmed |
The physical and chemical limnology of Yukon’s largest lake, Lhù’ààn Mân’ (Kluane Lake), prior to the 2016 ‘A’ą̈y Chù’ diversion |
title_sort |
physical and chemical limnology of yukon’s largest lake, lhù’ààn mân’ (kluane lake), prior to the 2016 ‘a’ą̈y chù’ diversion |
publisher |
Canadian Science Publishing |
publishDate |
2021 |
url |
https://doi.org/10.1139/as-2020-0012 https://doaj.org/article/6dda443946e84ac0aed2351d2aa0ff9b |
long_lat |
ENVELOPE(-138.773,-138.773,61.261,61.261) ENVELOPE(-138.537,-138.537,60.995,60.995) |
geographic |
Kluane Lake Slims River |
geographic_facet |
Kluane Lake Slims River |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Arctic Science, Vol 7, Iss 3, Pp 655-678 (2021) |
op_relation |
https://doi.org/10.1139/as-2020-0012 https://doaj.org/toc/2368-7460 doi:10.1139/as-2020-0012 2368-7460 https://doaj.org/article/6dda443946e84ac0aed2351d2aa0ff9b |
op_doi |
https://doi.org/10.1139/as-2020-0012 |
container_title |
Arctic Science |
container_volume |
7 |
container_issue |
3 |
container_start_page |
655 |
op_container_end_page |
678 |
_version_ |
1766296192167182336 |