Arctic chironomids of the northwest North Atlantic reflect environmental and biogeographic gradients.
Aim: While we understand broad climate drivers of insect distributions throughout the Arctic, less is known about the role of spatial processes in determining these relationships. As such, there is a need to understand how spatial controls may influence our interpretations of chironomid environment...
Published in: | Journal of Biogeography |
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Main Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
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John Wiley
2021
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Online Access: | http://dro.dur.ac.uk/32321/ http://dro.dur.ac.uk/32321/1/32321.pdf https://doi.org/10.1111/jbi.14015 |
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Open Polar |
collection |
Durham University: Durham Research Online |
op_collection_id |
ftunivdurham |
language |
unknown |
description |
Aim: While we understand broad climate drivers of insect distributions throughout the Arctic, less is known about the role of spatial processes in determining these relationships. As such, there is a need to understand how spatial controls may influence our interpretations of chironomid environment relationships. Here, we evaluated whether the distribution of chironomids followed spatial gradients, or were primarily controlled by environmental factors. Location: Eastern Canadian Arctic, Greenland, Iceland. Taxon: Non‐biting midges (Chironomidae). Methods: We examined chironomid assemblages from 239 lakes in the western North Atlantic Arctic region (specifically from the Arctic Archipelago of Canada, two parts of west Greenland (the southwest and central west) and northwest Iceland). We used a combination of unconstrained ordination (Self Organizing Maps); a simple method with only one data matrix (community data), and constrained ordination (Redundancy Analysis); a canonical ordination with two datasets where we extracted structure of community related to environmental data. These methods allowed us to model chironomid assemblages across a large bioregional dimension and identify specific differences between regions that were defined by common taxa represented across all regions in high frequencies, as well as rare taxa distinctive to each region found in low frequencies. We then evaluated the relative importance of spatial processes versus local environmental factors. Results: We find that environmental controls explained the largest amount of variation in chironomid assemblages within each region, and that spatial controls are only significant when crossing between regions. Broad‐scale biogeographic effects on chironomid distributions are reflected by the distinct differences among chironomid assemblages of Iceland, central‐west Greenland, and eastern Canada, defined by the presence of certain common and low‐frequency, rare taxa for each region. Environmental gradients, especially temperature, defined species distributions within each region, whereas spatial processes combine with environmental gradients in determining what mix of species characterizes each broad and geographically distinct island region in our study. Main conclusions: While biogeographic context is important for defining interpretations of environmental controls on species distributions, the primary control on distributions within regions is environmental. These influences are fundamentally important for reconstructing past environmental change and better understanding historical distributions of these insect indicators. |
format |
Article in Journal/Newspaper |
author |
Medeiros, Andrew S. Milošević, Đurađ Francis, Donna R. Maddison, Eleanor Woodroffe, Sarah Long, Antony Walker, Ian R. Hamerlík, Ladislav Quinlan, Roberto Langdon, Peter Brodersen, Klaus P. Axford, Yarrow |
spellingShingle |
Medeiros, Andrew S. Milošević, Đurađ Francis, Donna R. Maddison, Eleanor Woodroffe, Sarah Long, Antony Walker, Ian R. Hamerlík, Ladislav Quinlan, Roberto Langdon, Peter Brodersen, Klaus P. Axford, Yarrow Arctic chironomids of the northwest North Atlantic reflect environmental and biogeographic gradients. |
author_facet |
Medeiros, Andrew S. Milošević, Đurađ Francis, Donna R. Maddison, Eleanor Woodroffe, Sarah Long, Antony Walker, Ian R. Hamerlík, Ladislav Quinlan, Roberto Langdon, Peter Brodersen, Klaus P. Axford, Yarrow |
author_sort |
Medeiros, Andrew S. |
title |
Arctic chironomids of the northwest North Atlantic reflect environmental and biogeographic gradients. |
title_short |
Arctic chironomids of the northwest North Atlantic reflect environmental and biogeographic gradients. |
title_full |
Arctic chironomids of the northwest North Atlantic reflect environmental and biogeographic gradients. |
title_fullStr |
Arctic chironomids of the northwest North Atlantic reflect environmental and biogeographic gradients. |
title_full_unstemmed |
Arctic chironomids of the northwest North Atlantic reflect environmental and biogeographic gradients. |
title_sort |
arctic chironomids of the northwest north atlantic reflect environmental and biogeographic gradients. |
publisher |
John Wiley |
publishDate |
2021 |
url |
http://dro.dur.ac.uk/32321/ http://dro.dur.ac.uk/32321/1/32321.pdf https://doi.org/10.1111/jbi.14015 |
geographic |
Arctic Canada Greenland |
geographic_facet |
Arctic Canada Greenland |
genre |
Arctic Archipelago Arctic Atlantic Arctic Atlantic-Arctic Greenland Iceland North Atlantic |
genre_facet |
Arctic Archipelago Arctic Atlantic Arctic Atlantic-Arctic Greenland Iceland North Atlantic |
op_source |
Journal of biogeography, 2021, Vol.48(3), pp.511-525 [Peer Reviewed Journal] |
op_relation |
dro:32321 issn:1365-2699 doi:10.1111/jbi.14015 http://dro.dur.ac.uk/32321/ https://doi.org/10.1111/jbi.14015 http://dro.dur.ac.uk/32321/1/32321.pdf |
op_rights |
This is the peer reviewed version of the following article: Medeiros, Andrew S., Milošević, Đurađ, Francis, Donna R., Maddison, Eleanor, Woodroffe, Sarah, Long, Antony, Walker, Ian R., Hamerlík, Ladislav, Quinlan, Roberto, Langdon, Peter, Brodersen, Klaus P. & Axford, Yarrow (2021). Arctic chironomids of the northwest North Atlantic reflect environmental and biogeographic gradients. Journal of Biogeography 48(3): 511-525.https://doi.org/10.1111/jbi.14015. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. |
op_doi |
https://doi.org/10.1111/jbi.14015 |
container_title |
Journal of Biogeography |
container_volume |
48 |
container_issue |
3 |
container_start_page |
511 |
op_container_end_page |
525 |
_version_ |
1766303118577893376 |
spelling |
ftunivdurham:oai:dro.dur.ac.uk.OAI2:32321 2023-05-15T14:29:01+02:00 Arctic chironomids of the northwest North Atlantic reflect environmental and biogeographic gradients. Medeiros, Andrew S. Milošević, Đurađ Francis, Donna R. Maddison, Eleanor Woodroffe, Sarah Long, Antony Walker, Ian R. Hamerlík, Ladislav Quinlan, Roberto Langdon, Peter Brodersen, Klaus P. Axford, Yarrow 2021-03 application/pdf http://dro.dur.ac.uk/32321/ http://dro.dur.ac.uk/32321/1/32321.pdf https://doi.org/10.1111/jbi.14015 unknown John Wiley dro:32321 issn:1365-2699 doi:10.1111/jbi.14015 http://dro.dur.ac.uk/32321/ https://doi.org/10.1111/jbi.14015 http://dro.dur.ac.uk/32321/1/32321.pdf This is the peer reviewed version of the following article: Medeiros, Andrew S., Milošević, Đurađ, Francis, Donna R., Maddison, Eleanor, Woodroffe, Sarah, Long, Antony, Walker, Ian R., Hamerlík, Ladislav, Quinlan, Roberto, Langdon, Peter, Brodersen, Klaus P. & Axford, Yarrow (2021). Arctic chironomids of the northwest North Atlantic reflect environmental and biogeographic gradients. Journal of Biogeography 48(3): 511-525.https://doi.org/10.1111/jbi.14015. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. Journal of biogeography, 2021, Vol.48(3), pp.511-525 [Peer Reviewed Journal] Article PeerReviewed 2021 ftunivdurham https://doi.org/10.1111/jbi.14015 2021-12-02T23:24:34Z Aim: While we understand broad climate drivers of insect distributions throughout the Arctic, less is known about the role of spatial processes in determining these relationships. As such, there is a need to understand how spatial controls may influence our interpretations of chironomid environment relationships. Here, we evaluated whether the distribution of chironomids followed spatial gradients, or were primarily controlled by environmental factors. Location: Eastern Canadian Arctic, Greenland, Iceland. Taxon: Non‐biting midges (Chironomidae). Methods: We examined chironomid assemblages from 239 lakes in the western North Atlantic Arctic region (specifically from the Arctic Archipelago of Canada, two parts of west Greenland (the southwest and central west) and northwest Iceland). We used a combination of unconstrained ordination (Self Organizing Maps); a simple method with only one data matrix (community data), and constrained ordination (Redundancy Analysis); a canonical ordination with two datasets where we extracted structure of community related to environmental data. These methods allowed us to model chironomid assemblages across a large bioregional dimension and identify specific differences between regions that were defined by common taxa represented across all regions in high frequencies, as well as rare taxa distinctive to each region found in low frequencies. We then evaluated the relative importance of spatial processes versus local environmental factors. Results: We find that environmental controls explained the largest amount of variation in chironomid assemblages within each region, and that spatial controls are only significant when crossing between regions. Broad‐scale biogeographic effects on chironomid distributions are reflected by the distinct differences among chironomid assemblages of Iceland, central‐west Greenland, and eastern Canada, defined by the presence of certain common and low‐frequency, rare taxa for each region. Environmental gradients, especially temperature, defined species distributions within each region, whereas spatial processes combine with environmental gradients in determining what mix of species characterizes each broad and geographically distinct island region in our study. Main conclusions: While biogeographic context is important for defining interpretations of environmental controls on species distributions, the primary control on distributions within regions is environmental. These influences are fundamentally important for reconstructing past environmental change and better understanding historical distributions of these insect indicators. Article in Journal/Newspaper Arctic Archipelago Arctic Atlantic Arctic Atlantic-Arctic Greenland Iceland North Atlantic Durham University: Durham Research Online Arctic Canada Greenland Journal of Biogeography 48 3 511 525 |