Recent climate warming favours more specialized cladoceran taxa in western Canadian Arctic lakes
Abstract Aim Shifts in the distribution of freshwater algal communities as a result of climate‐related limnological changes are well documented; however, impacts on higher trophic levels have received less attention. For example, little is known about how Cladocera (Crustacea, Branchiopoda), often d...
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crwiley:10.1111/jbi.12519 2023-12-03T10:16:47+01:00 Recent climate warming favours more specialized cladoceran taxa in western Canadian Arctic lakes Thienpont, Joshua R. Korosi, Jennifer B. Cheng, Elisa S. Deasley, Kayla Pisaric, Michael F. J. Smol, John P. W. Garfield Weston Foundation and Northern Scientific Training Program Natural Sciences and Engineering Research Council of Canada 2015 http://dx.doi.org/10.1111/jbi.12519 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjbi.12519 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jbi.12519 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Biogeography volume 42, issue 8, page 1553-1565 ISSN 0305-0270 1365-2699 Ecology Ecology, Evolution, Behavior and Systematics journal-article 2015 crwiley https://doi.org/10.1111/jbi.12519 2023-11-09T14:08:50Z Abstract Aim Shifts in the distribution of freshwater algal communities as a result of climate‐related limnological changes are well documented; however, impacts on higher trophic levels have received less attention. For example, little is known about how Cladocera (Crustacea, Branchiopoda), often dominant invertebrates and key ecological indicators, have responded to recent warming on broad spatial and temporal scales. Here, we use lake sediment records to test the hypothesis that recent, intensive warming in the western Canadian Arctic has resulted in consistent shifts in the composition of cladoceran assemblages. Location Small, first‐order lakes in the Mackenzie Delta region of the western Canadian Arctic. Methods Sediment cores representing the recent past (approximately 150–200 years) were obtained from five lakes spanning a strong climatic gradient. Subfossil remains of Cladocera were identified and enumerated and overall primary production was inferred using spectroscopic techniques. The habitat preferences and feeding strategy of each taxon were compared. Detrended canonical correspondence analysis was used to estimate compositional turnover since 1850, and compared with that of three cladoceran assemblages from Nova Scotia, to place high‐latitude changes in context. Results Cladoceran assemblage changes occurred coincident with the timing of known regional warming and were strongly linked to estimated changes in primary production. In the northern and deepest lakes, an increase in the planktonic, filter‐feeding taxon Bosmina spp. coincided with a decrease in the generalist littoral taxa Chydorus cf. brevilabris and Alona circumfimbriata . In the more southern lakes, an increase in macrophyte‐associated scrapers Acroperus harpae and Eurycercus spp. occurred concurrently with decreases in generalist taxa. In one lake, an increase in another specialist, an obligate mud‐dwelling taxon, was observed. Main conclusions In the western Canadian Arctic, warming has resulted in an increase in cladoceran taxa ... Article in Journal/Newspaper Arctic Mackenzie Delta Wiley Online Library (via Crossref) Arctic Mackenzie Delta ENVELOPE(-136.672,-136.672,68.833,68.833) Journal of Biogeography 42 8 1553 1565 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Ecology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology Ecology, Evolution, Behavior and Systematics Thienpont, Joshua R. Korosi, Jennifer B. Cheng, Elisa S. Deasley, Kayla Pisaric, Michael F. J. Smol, John P. Recent climate warming favours more specialized cladoceran taxa in western Canadian Arctic lakes |
topic_facet |
Ecology Ecology, Evolution, Behavior and Systematics |
description |
Abstract Aim Shifts in the distribution of freshwater algal communities as a result of climate‐related limnological changes are well documented; however, impacts on higher trophic levels have received less attention. For example, little is known about how Cladocera (Crustacea, Branchiopoda), often dominant invertebrates and key ecological indicators, have responded to recent warming on broad spatial and temporal scales. Here, we use lake sediment records to test the hypothesis that recent, intensive warming in the western Canadian Arctic has resulted in consistent shifts in the composition of cladoceran assemblages. Location Small, first‐order lakes in the Mackenzie Delta region of the western Canadian Arctic. Methods Sediment cores representing the recent past (approximately 150–200 years) were obtained from five lakes spanning a strong climatic gradient. Subfossil remains of Cladocera were identified and enumerated and overall primary production was inferred using spectroscopic techniques. The habitat preferences and feeding strategy of each taxon were compared. Detrended canonical correspondence analysis was used to estimate compositional turnover since 1850, and compared with that of three cladoceran assemblages from Nova Scotia, to place high‐latitude changes in context. Results Cladoceran assemblage changes occurred coincident with the timing of known regional warming and were strongly linked to estimated changes in primary production. In the northern and deepest lakes, an increase in the planktonic, filter‐feeding taxon Bosmina spp. coincided with a decrease in the generalist littoral taxa Chydorus cf. brevilabris and Alona circumfimbriata . In the more southern lakes, an increase in macrophyte‐associated scrapers Acroperus harpae and Eurycercus spp. occurred concurrently with decreases in generalist taxa. In one lake, an increase in another specialist, an obligate mud‐dwelling taxon, was observed. Main conclusions In the western Canadian Arctic, warming has resulted in an increase in cladoceran taxa ... |
author2 |
W. Garfield Weston Foundation and Northern Scientific Training Program Natural Sciences and Engineering Research Council of Canada |
format |
Article in Journal/Newspaper |
author |
Thienpont, Joshua R. Korosi, Jennifer B. Cheng, Elisa S. Deasley, Kayla Pisaric, Michael F. J. Smol, John P. |
author_facet |
Thienpont, Joshua R. Korosi, Jennifer B. Cheng, Elisa S. Deasley, Kayla Pisaric, Michael F. J. Smol, John P. |
author_sort |
Thienpont, Joshua R. |
title |
Recent climate warming favours more specialized cladoceran taxa in western Canadian Arctic lakes |
title_short |
Recent climate warming favours more specialized cladoceran taxa in western Canadian Arctic lakes |
title_full |
Recent climate warming favours more specialized cladoceran taxa in western Canadian Arctic lakes |
title_fullStr |
Recent climate warming favours more specialized cladoceran taxa in western Canadian Arctic lakes |
title_full_unstemmed |
Recent climate warming favours more specialized cladoceran taxa in western Canadian Arctic lakes |
title_sort |
recent climate warming favours more specialized cladoceran taxa in western canadian arctic lakes |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1111/jbi.12519 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjbi.12519 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jbi.12519 |
long_lat |
ENVELOPE(-136.672,-136.672,68.833,68.833) |
geographic |
Arctic Mackenzie Delta |
geographic_facet |
Arctic Mackenzie Delta |
genre |
Arctic Mackenzie Delta |
genre_facet |
Arctic Mackenzie Delta |
op_source |
Journal of Biogeography volume 42, issue 8, page 1553-1565 ISSN 0305-0270 1365-2699 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jbi.12519 |
container_title |
Journal of Biogeography |
container_volume |
42 |
container_issue |
8 |
container_start_page |
1553 |
op_container_end_page |
1565 |
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1784263724842876928 |