The distribution of the Chironomidae (Insecta: Diptera) along multiple environmental gradients in lakes and ponds of the eastern Canadian Arctic
An examination of the Chironomidae, the dominant aquatic invertebrate taxa found in Arctic lakes and ponds, was conducted to determine the environmental gradients that may limit their geographical distribution in the eastern Canadian Arctic. Subfossil chironomid head capsules, comprising 86 taxa, we...
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Canadian Cryospheric Information Network
2015
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ftdatacite:10.21963/12506 2023-05-15T14:36:55+02:00 The distribution of the Chironomidae (Insecta: Diptera) along multiple environmental gradients in lakes and ponds of the eastern Canadian Arctic Quinlan, Roberto Medeiros, Andrew 2015 https://dx.doi.org/10.21963/12506 https://www.polardata.ca/pdcsearch/?doi_id=12506 en eng Canadian Cryospheric Information Network Public Chironomids Diptera Diversity Paleo-indicators Water temperature Other programs and funding agencies dataset Dataset 2015 ftdatacite https://doi.org/10.21963/12506 2021-11-05T12:55:41Z An examination of the Chironomidae, the dominant aquatic invertebrate taxa found in Arctic lakes and ponds, was conducted to determine the environmental gradients that may limit their geographical distribution in the eastern Canadian Arctic. Subfossil chironomid head capsules, comprising 86 taxa, were sampled from surficial sediments of 63 lakes that spanned from tree-line (northern Manitoba) across multiple regions within the eastern Canadian Arctic. Water chemistry and environmental data were then compared to chironomid assemblages using multivariate analysis. The distribution of chironomids was found to primarily follow a temperature gradient, but additional significant relationships were also found along a nutrient/productivity gradient. Several species of the Tribe Chironomini, which generally represent warm-water adapted taxa, were also found far beyond tree-line in the southern Kivalliq region of Nunavut, indicating a more northerly range than previously known. While temperature and trophic status were found to strongly influence the distribution of some taxa, partially constrained gradient analysis indicates that specific chironomid taxa could be used to indicate a primary response to climate regardless of trophic status. This may allow for more holistic inferences of how aquatic communities may respond to climate change as the range of temperature dependent species expand into Arctic systems. : Purpose: An examination of the diversity of chironomids (Insecta:Diptera:Chironomidae) along multiple environmental gradients in the eastern Canadian Arctic to determine what may limit their geographical distribution. : Summary: Chironomid diversity across lakes in the eastern Canadian Arctic. Dataset Arctic Climate change Kivalliq Nunavut DataCite Metadata Store (German National Library of Science and Technology) Arctic Nunavut |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Chironomids Diptera Diversity Paleo-indicators Water temperature Other programs and funding agencies |
spellingShingle |
Chironomids Diptera Diversity Paleo-indicators Water temperature Other programs and funding agencies Quinlan, Roberto Medeiros, Andrew The distribution of the Chironomidae (Insecta: Diptera) along multiple environmental gradients in lakes and ponds of the eastern Canadian Arctic |
topic_facet |
Chironomids Diptera Diversity Paleo-indicators Water temperature Other programs and funding agencies |
description |
An examination of the Chironomidae, the dominant aquatic invertebrate taxa found in Arctic lakes and ponds, was conducted to determine the environmental gradients that may limit their geographical distribution in the eastern Canadian Arctic. Subfossil chironomid head capsules, comprising 86 taxa, were sampled from surficial sediments of 63 lakes that spanned from tree-line (northern Manitoba) across multiple regions within the eastern Canadian Arctic. Water chemistry and environmental data were then compared to chironomid assemblages using multivariate analysis. The distribution of chironomids was found to primarily follow a temperature gradient, but additional significant relationships were also found along a nutrient/productivity gradient. Several species of the Tribe Chironomini, which generally represent warm-water adapted taxa, were also found far beyond tree-line in the southern Kivalliq region of Nunavut, indicating a more northerly range than previously known. While temperature and trophic status were found to strongly influence the distribution of some taxa, partially constrained gradient analysis indicates that specific chironomid taxa could be used to indicate a primary response to climate regardless of trophic status. This may allow for more holistic inferences of how aquatic communities may respond to climate change as the range of temperature dependent species expand into Arctic systems. : Purpose: An examination of the diversity of chironomids (Insecta:Diptera:Chironomidae) along multiple environmental gradients in the eastern Canadian Arctic to determine what may limit their geographical distribution. : Summary: Chironomid diversity across lakes in the eastern Canadian Arctic. |
format |
Dataset |
author |
Quinlan, Roberto Medeiros, Andrew |
author_facet |
Quinlan, Roberto Medeiros, Andrew |
author_sort |
Quinlan, Roberto |
title |
The distribution of the Chironomidae (Insecta: Diptera) along multiple environmental gradients in lakes and ponds of the eastern Canadian Arctic |
title_short |
The distribution of the Chironomidae (Insecta: Diptera) along multiple environmental gradients in lakes and ponds of the eastern Canadian Arctic |
title_full |
The distribution of the Chironomidae (Insecta: Diptera) along multiple environmental gradients in lakes and ponds of the eastern Canadian Arctic |
title_fullStr |
The distribution of the Chironomidae (Insecta: Diptera) along multiple environmental gradients in lakes and ponds of the eastern Canadian Arctic |
title_full_unstemmed |
The distribution of the Chironomidae (Insecta: Diptera) along multiple environmental gradients in lakes and ponds of the eastern Canadian Arctic |
title_sort |
distribution of the chironomidae (insecta: diptera) along multiple environmental gradients in lakes and ponds of the eastern canadian arctic |
publisher |
Canadian Cryospheric Information Network |
publishDate |
2015 |
url |
https://dx.doi.org/10.21963/12506 https://www.polardata.ca/pdcsearch/?doi_id=12506 |
geographic |
Arctic Nunavut |
geographic_facet |
Arctic Nunavut |
genre |
Arctic Climate change Kivalliq Nunavut |
genre_facet |
Arctic Climate change Kivalliq Nunavut |
op_rights |
Public |
op_doi |
https://doi.org/10.21963/12506 |
_version_ |
1766309442391900160 |