Biotic responses to multiple aquatic and terrestrial gradients in shallow subarctic lakes (Old Crow Flats, Yukon, Canada)
Biotic communities in shallow northern lakes are frequently used to assess environmental change; however, complex interactions among multiple factors remain understudied. Here, we present analyses of a comprehensive data set that evaluates the influence input waters, catchment characteristics, limno...
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ftdoajarticles:oai:doaj.org/article:acc6bf00ce2c4d15af14027b3045f90b 2023-05-15T14:23:42+02:00 Biotic responses to multiple aquatic and terrestrial gradients in shallow subarctic lakes (Old Crow Flats, Yukon, Canada) A.M. Balasubramaniam A.S. Medeiros K.W. Turner R.I. Hall B.B. Wolfe 2017-06-01T00:00:00Z https://doi.org/10.1139/as-2016-0021 https://doaj.org/article/acc6bf00ce2c4d15af14027b3045f90b EN FR eng fre Canadian Science Publishing https://doi.org/10.1139/as-2016-0021 https://doaj.org/toc/2368-7460 doi:10.1139/as-2016-0021 2368-7460 https://doaj.org/article/acc6bf00ce2c4d15af14027b3045f90b Arctic Science, Vol 3, Iss 2, Pp 277-300 (2017) thermokarst lakes limnology variation partitioning analysis diatoms chironomids Environmental sciences GE1-350 Environmental engineering TA170-171 article 2017 ftdoajarticles https://doi.org/10.1139/as-2016-0021 2022-12-31T10:04:44Z Biotic communities in shallow northern lakes are frequently used to assess environmental change; however, complex interactions among multiple factors remain understudied. Here, we present analyses of a comprehensive data set that evaluates the influence input waters, catchment characteristics, limnology, and sediment properties on diatom and chironomid assemblages in surface sediments of ~49 shallow mainly thermokarst lakes in Old Crow Flats, Yukon. Multivariate analyses and ANOSIM tests identified that composition of diatom (119 taxa) and chironomid (68 taxa) assemblages differs significantly (p < 0.05) between lakes with snowmelt- versus rainfall-dominated input water. Redundancy analyses revealed strong correlation of limnological, sediment, and catchment variables with input waters. Variation partitioning analyses showed that unique effects of limnological variables account for the largest proportion of variation in diatom and chironomid assemblages (17.2% and 12.6%, respectively). Important independent roles of sediment properties (8.5% and 9.5%) and catchment characteristics (4.9% and 5.1%) were also identified. We suggest that the substantial variation shared among these classes (6.1% and 7.9%) is largely attributable to hydrological processes. Our study demonstrates the utility of multi-factor analysis in northern aquatic research and draws attention to the limitations of one-dimensional comparisons and their interpretations when modelling biotic responses to environmental change. Article in Journal/Newspaper Arctic Old Crow Subarctic Thermokarst Yukon Directory of Open Access Journals: DOAJ Articles Canada Old Crow Flats ENVELOPE(-139.755,-139.755,68.083,68.083) Yukon Arctic Science 3 2 277 300 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English French |
topic |
thermokarst lakes limnology variation partitioning analysis diatoms chironomids Environmental sciences GE1-350 Environmental engineering TA170-171 |
spellingShingle |
thermokarst lakes limnology variation partitioning analysis diatoms chironomids Environmental sciences GE1-350 Environmental engineering TA170-171 A.M. Balasubramaniam A.S. Medeiros K.W. Turner R.I. Hall B.B. Wolfe Biotic responses to multiple aquatic and terrestrial gradients in shallow subarctic lakes (Old Crow Flats, Yukon, Canada) |
topic_facet |
thermokarst lakes limnology variation partitioning analysis diatoms chironomids Environmental sciences GE1-350 Environmental engineering TA170-171 |
description |
Biotic communities in shallow northern lakes are frequently used to assess environmental change; however, complex interactions among multiple factors remain understudied. Here, we present analyses of a comprehensive data set that evaluates the influence input waters, catchment characteristics, limnology, and sediment properties on diatom and chironomid assemblages in surface sediments of ~49 shallow mainly thermokarst lakes in Old Crow Flats, Yukon. Multivariate analyses and ANOSIM tests identified that composition of diatom (119 taxa) and chironomid (68 taxa) assemblages differs significantly (p < 0.05) between lakes with snowmelt- versus rainfall-dominated input water. Redundancy analyses revealed strong correlation of limnological, sediment, and catchment variables with input waters. Variation partitioning analyses showed that unique effects of limnological variables account for the largest proportion of variation in diatom and chironomid assemblages (17.2% and 12.6%, respectively). Important independent roles of sediment properties (8.5% and 9.5%) and catchment characteristics (4.9% and 5.1%) were also identified. We suggest that the substantial variation shared among these classes (6.1% and 7.9%) is largely attributable to hydrological processes. Our study demonstrates the utility of multi-factor analysis in northern aquatic research and draws attention to the limitations of one-dimensional comparisons and their interpretations when modelling biotic responses to environmental change. |
format |
Article in Journal/Newspaper |
author |
A.M. Balasubramaniam A.S. Medeiros K.W. Turner R.I. Hall B.B. Wolfe |
author_facet |
A.M. Balasubramaniam A.S. Medeiros K.W. Turner R.I. Hall B.B. Wolfe |
author_sort |
A.M. Balasubramaniam |
title |
Biotic responses to multiple aquatic and terrestrial gradients in shallow subarctic lakes (Old Crow Flats, Yukon, Canada) |
title_short |
Biotic responses to multiple aquatic and terrestrial gradients in shallow subarctic lakes (Old Crow Flats, Yukon, Canada) |
title_full |
Biotic responses to multiple aquatic and terrestrial gradients in shallow subarctic lakes (Old Crow Flats, Yukon, Canada) |
title_fullStr |
Biotic responses to multiple aquatic and terrestrial gradients in shallow subarctic lakes (Old Crow Flats, Yukon, Canada) |
title_full_unstemmed |
Biotic responses to multiple aquatic and terrestrial gradients in shallow subarctic lakes (Old Crow Flats, Yukon, Canada) |
title_sort |
biotic responses to multiple aquatic and terrestrial gradients in shallow subarctic lakes (old crow flats, yukon, canada) |
publisher |
Canadian Science Publishing |
publishDate |
2017 |
url |
https://doi.org/10.1139/as-2016-0021 https://doaj.org/article/acc6bf00ce2c4d15af14027b3045f90b |
long_lat |
ENVELOPE(-139.755,-139.755,68.083,68.083) |
geographic |
Canada Old Crow Flats Yukon |
geographic_facet |
Canada Old Crow Flats Yukon |
genre |
Arctic Old Crow Subarctic Thermokarst Yukon |
genre_facet |
Arctic Old Crow Subarctic Thermokarst Yukon |
op_source |
Arctic Science, Vol 3, Iss 2, Pp 277-300 (2017) |
op_relation |
https://doi.org/10.1139/as-2016-0021 https://doaj.org/toc/2368-7460 doi:10.1139/as-2016-0021 2368-7460 https://doaj.org/article/acc6bf00ce2c4d15af14027b3045f90b |
op_doi |
https://doi.org/10.1139/as-2016-0021 |
container_title |
Arctic Science |
container_volume |
3 |
container_issue |
2 |
container_start_page |
277 |
op_container_end_page |
300 |
_version_ |
1766296180945321984 |