Source water inputs and catchment characteristics regulate limnological conditions of shallow subarctic lakes (Old Crow Flats, Yukon, Canada)
Climate variations exert rapid and strong control on the hydrology of shallow lake-rich subarctic landscapes, but knowledge of the associated effects on limnological conditions remains limited. Based on analysis of water isotope compositions and water chemistry at 56 lakes across Old Crow Flats (Yuk...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
---|---|
Main Authors: | , , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
2015
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/cjfas-2014-0340 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2014-0340 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2014-0340 |
id |
crcansciencepubl:10.1139/cjfas-2014-0340 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/cjfas-2014-0340 2023-12-17T10:26:18+01:00 Source water inputs and catchment characteristics regulate limnological conditions of shallow subarctic lakes (Old Crow Flats, Yukon, Canada) Balasubramaniam, Ann M. Hall, Roland I. Wolfe, Brent B. Sweetman, Jon N. Wang, Xiaowa Smith, Ralph 2015 http://dx.doi.org/10.1139/cjfas-2014-0340 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2014-0340 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2014-0340 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 72, issue 7, page 1058-1072 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2015 crcansciencepubl https://doi.org/10.1139/cjfas-2014-0340 2023-11-19T13:39:06Z Climate variations exert rapid and strong control on the hydrology of shallow lake-rich subarctic landscapes, but knowledge of the associated effects on limnological conditions remains limited. Based on analysis of water isotope compositions and water chemistry at 56 lakes across Old Crow Flats (Yukon), a large thermokarst landscape, we assess if differences in source water inputs (snowmelt versus rainfall) affect limnological conditions during the ice-free season of 2007 and explore influences of catchment features. Results demonstrate that lakes with snowmelt-dominated source waters, situated in catchments that support tall shrub and woodland vegetation, possess significantly higher (p < 0.05) nutrient (N, P, SiO 2 ) and dissolved organic carbon concentrations than lakes with rainfall-dominated source waters. Conversely, rainfall-dominated lakes, located in catchments dominated by dwarf shrubs and sparse vegetation, have significantly higher concentrations of major ions (Mg 2+ , Na + , SO 4 2− ) and pH. These limnological differences persisted throughout the ice-free season. We suggest that interaction of snowmelt with organic-rich detritus raises nutrient concentrations in snowmelt-dominated lakes and that evaporative-concentration, shoreline erosion and possibly rainfall runoff are processes that raise the ionic content of lakes with rainfall-dominated source waters. Knowledge of these relations improves the ability to anticipate limnological responses to ongoing and future climate and hydrological change in Arctic and subarctic regions. Article in Journal/Newspaper Arctic Old Crow Subarctic Thermokarst Yukon Canadian Science Publishing (via Crossref) Arctic Yukon Canada Old Crow Flats ENVELOPE(-139.755,-139.755,68.083,68.083) Canadian Journal of Fisheries and Aquatic Sciences 72 7 1058 1072 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Balasubramaniam, Ann M. Hall, Roland I. Wolfe, Brent B. Sweetman, Jon N. Wang, Xiaowa Source water inputs and catchment characteristics regulate limnological conditions of shallow subarctic lakes (Old Crow Flats, Yukon, Canada) |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Climate variations exert rapid and strong control on the hydrology of shallow lake-rich subarctic landscapes, but knowledge of the associated effects on limnological conditions remains limited. Based on analysis of water isotope compositions and water chemistry at 56 lakes across Old Crow Flats (Yukon), a large thermokarst landscape, we assess if differences in source water inputs (snowmelt versus rainfall) affect limnological conditions during the ice-free season of 2007 and explore influences of catchment features. Results demonstrate that lakes with snowmelt-dominated source waters, situated in catchments that support tall shrub and woodland vegetation, possess significantly higher (p < 0.05) nutrient (N, P, SiO 2 ) and dissolved organic carbon concentrations than lakes with rainfall-dominated source waters. Conversely, rainfall-dominated lakes, located in catchments dominated by dwarf shrubs and sparse vegetation, have significantly higher concentrations of major ions (Mg 2+ , Na + , SO 4 2− ) and pH. These limnological differences persisted throughout the ice-free season. We suggest that interaction of snowmelt with organic-rich detritus raises nutrient concentrations in snowmelt-dominated lakes and that evaporative-concentration, shoreline erosion and possibly rainfall runoff are processes that raise the ionic content of lakes with rainfall-dominated source waters. Knowledge of these relations improves the ability to anticipate limnological responses to ongoing and future climate and hydrological change in Arctic and subarctic regions. |
author2 |
Smith, Ralph |
format |
Article in Journal/Newspaper |
author |
Balasubramaniam, Ann M. Hall, Roland I. Wolfe, Brent B. Sweetman, Jon N. Wang, Xiaowa |
author_facet |
Balasubramaniam, Ann M. Hall, Roland I. Wolfe, Brent B. Sweetman, Jon N. Wang, Xiaowa |
author_sort |
Balasubramaniam, Ann M. |
title |
Source water inputs and catchment characteristics regulate limnological conditions of shallow subarctic lakes (Old Crow Flats, Yukon, Canada) |
title_short |
Source water inputs and catchment characteristics regulate limnological conditions of shallow subarctic lakes (Old Crow Flats, Yukon, Canada) |
title_full |
Source water inputs and catchment characteristics regulate limnological conditions of shallow subarctic lakes (Old Crow Flats, Yukon, Canada) |
title_fullStr |
Source water inputs and catchment characteristics regulate limnological conditions of shallow subarctic lakes (Old Crow Flats, Yukon, Canada) |
title_full_unstemmed |
Source water inputs and catchment characteristics regulate limnological conditions of shallow subarctic lakes (Old Crow Flats, Yukon, Canada) |
title_sort |
source water inputs and catchment characteristics regulate limnological conditions of shallow subarctic lakes (old crow flats, yukon, canada) |
publisher |
Canadian Science Publishing |
publishDate |
2015 |
url |
http://dx.doi.org/10.1139/cjfas-2014-0340 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2014-0340 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2014-0340 |
long_lat |
ENVELOPE(-139.755,-139.755,68.083,68.083) |
geographic |
Arctic Yukon Canada Old Crow Flats |
geographic_facet |
Arctic Yukon Canada Old Crow Flats |
genre |
Arctic Old Crow Subarctic Thermokarst Yukon |
genre_facet |
Arctic Old Crow Subarctic Thermokarst Yukon |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 72, issue 7, page 1058-1072 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2014-0340 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
72 |
container_issue |
7 |
container_start_page |
1058 |
op_container_end_page |
1072 |
_version_ |
1785578030125547520 |