Limnological characteristics of 56 lakes in the Central Canadian Arctic Treeline Region
Measured environmental variables from 56 lakes across the Central Canadian Treeline Region exhibited clear limnological differences among subpolar ecozones, reflecting strong latitudinal changes in biome characteristics (e.g. vegetation, permafrost, climate). Principal Components Analysis (PCA) clea...
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ftdoajarticles:oai:doaj.org/article:43e0cf7a0044420d907d475fd51ca727 2023-05-15T14:36:56+02:00 Limnological characteristics of 56 lakes in the Central Canadian Arctic Treeline Region John P. SMOL Xiaowa WANG Derek C.G. MUIR Kathleen M. RÜHLAND 2003-02-01T00:00:00Z https://doi.org/10.4081/jlimnol.2003.9 https://doaj.org/article/43e0cf7a0044420d907d475fd51ca727 EN eng PAGEPress Publications http://www.jlimnol.it/index.php/jlimnol/article/view/322 https://doaj.org/toc/1129-5767 https://doaj.org/toc/1723-8633 doi:10.4081/jlimnol.2003.9 1129-5767 1723-8633 https://doaj.org/article/43e0cf7a0044420d907d475fd51ca727 Journal of Limnology, Vol 62, Iss 1, Pp 9-27 (2003) arctic treeline climatic change dissolved inorganic carbon dissolved organic carbon major ions nutrients Geography. Anthropology. Recreation G Physical geography GB3-5030 Environmental sciences GE1-350 article 2003 ftdoajarticles https://doi.org/10.4081/jlimnol.2003.9 2022-12-31T01:12:05Z Measured environmental variables from 56 lakes across the Central Canadian Treeline Region exhibited clear limnological differences among subpolar ecozones, reflecting strong latitudinal changes in biome characteristics (e.g. vegetation, permafrost, climate). Principal Components Analysis (PCA) clearly separated forested sites from tundra sites based on distinct differences in limnological characteristics. Increases in major ions and related variables (e.g. dissolved inorganic carbon, DIC) were higher in boreal forest sites in comparison to arctic tundra sites. The higher values recorded in the boreal forest lakes may be indirectly related to differences in climatic factors in these zones, such as the degree of permafrost development, higher precipitation and runoff, duration of ice-cover on the lakes, and thicker and better soil development. Similar to trends observed in DIC, substantially higher values for dissolved organic carbon (DOC) were measured in boreal forest lakes than in arctic tundra lakes. This was likely due to higher amounts of catchment-derived DOC entering the lakes from coniferous leaf litter sources. Relative to arctic tundra lakes, boreal forest lakes had higher nutrient concentrations, particularly total nitrogen (TN), likely due to warmer conditions, a longer growing season, and higher precipitation, which would enhance nutrient cycling and primary productivity. Results suggest that modern aquatic environments at opposite sides of the central Canadian arctic treeline (i.e. boreal forest and arctic tundra) exhibit distinct differences in water chemistry and physical conditions. These limnological trends may provide important information on possible future changes with additional warming. Article in Journal/Newspaper Arctic Ice permafrost Tundra Directory of Open Access Journals: DOAJ Articles Arctic Journal of Limnology 62 1 9 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
arctic treeline climatic change dissolved inorganic carbon dissolved organic carbon major ions nutrients Geography. Anthropology. Recreation G Physical geography GB3-5030 Environmental sciences GE1-350 |
spellingShingle |
arctic treeline climatic change dissolved inorganic carbon dissolved organic carbon major ions nutrients Geography. Anthropology. Recreation G Physical geography GB3-5030 Environmental sciences GE1-350 John P. SMOL Xiaowa WANG Derek C.G. MUIR Kathleen M. RÜHLAND Limnological characteristics of 56 lakes in the Central Canadian Arctic Treeline Region |
topic_facet |
arctic treeline climatic change dissolved inorganic carbon dissolved organic carbon major ions nutrients Geography. Anthropology. Recreation G Physical geography GB3-5030 Environmental sciences GE1-350 |
description |
Measured environmental variables from 56 lakes across the Central Canadian Treeline Region exhibited clear limnological differences among subpolar ecozones, reflecting strong latitudinal changes in biome characteristics (e.g. vegetation, permafrost, climate). Principal Components Analysis (PCA) clearly separated forested sites from tundra sites based on distinct differences in limnological characteristics. Increases in major ions and related variables (e.g. dissolved inorganic carbon, DIC) were higher in boreal forest sites in comparison to arctic tundra sites. The higher values recorded in the boreal forest lakes may be indirectly related to differences in climatic factors in these zones, such as the degree of permafrost development, higher precipitation and runoff, duration of ice-cover on the lakes, and thicker and better soil development. Similar to trends observed in DIC, substantially higher values for dissolved organic carbon (DOC) were measured in boreal forest lakes than in arctic tundra lakes. This was likely due to higher amounts of catchment-derived DOC entering the lakes from coniferous leaf litter sources. Relative to arctic tundra lakes, boreal forest lakes had higher nutrient concentrations, particularly total nitrogen (TN), likely due to warmer conditions, a longer growing season, and higher precipitation, which would enhance nutrient cycling and primary productivity. Results suggest that modern aquatic environments at opposite sides of the central Canadian arctic treeline (i.e. boreal forest and arctic tundra) exhibit distinct differences in water chemistry and physical conditions. These limnological trends may provide important information on possible future changes with additional warming. |
format |
Article in Journal/Newspaper |
author |
John P. SMOL Xiaowa WANG Derek C.G. MUIR Kathleen M. RÜHLAND |
author_facet |
John P. SMOL Xiaowa WANG Derek C.G. MUIR Kathleen M. RÜHLAND |
author_sort |
John P. SMOL |
title |
Limnological characteristics of 56 lakes in the Central Canadian Arctic Treeline Region |
title_short |
Limnological characteristics of 56 lakes in the Central Canadian Arctic Treeline Region |
title_full |
Limnological characteristics of 56 lakes in the Central Canadian Arctic Treeline Region |
title_fullStr |
Limnological characteristics of 56 lakes in the Central Canadian Arctic Treeline Region |
title_full_unstemmed |
Limnological characteristics of 56 lakes in the Central Canadian Arctic Treeline Region |
title_sort |
limnological characteristics of 56 lakes in the central canadian arctic treeline region |
publisher |
PAGEPress Publications |
publishDate |
2003 |
url |
https://doi.org/10.4081/jlimnol.2003.9 https://doaj.org/article/43e0cf7a0044420d907d475fd51ca727 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice permafrost Tundra |
genre_facet |
Arctic Ice permafrost Tundra |
op_source |
Journal of Limnology, Vol 62, Iss 1, Pp 9-27 (2003) |
op_relation |
http://www.jlimnol.it/index.php/jlimnol/article/view/322 https://doaj.org/toc/1129-5767 https://doaj.org/toc/1723-8633 doi:10.4081/jlimnol.2003.9 1129-5767 1723-8633 https://doaj.org/article/43e0cf7a0044420d907d475fd51ca727 |
op_doi |
https://doi.org/10.4081/jlimnol.2003.9 |
container_title |
Journal of Limnology |
container_volume |
62 |
container_issue |
1 |
container_start_page |
9 |
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1766309461528412160 |