Functional diversity of chironomid communities in subarctic lakes across gradients in temperature and catchment characteristics
Abstract Northern ecosystems are experiencing rapid and large-scale changes driven by accelerated warming, which have profound effects on the terrestrial and freshwater biodiversity. A comprehensive understanding of the distribution of aquatic biodiversity of subarctic ecosystems is therefore needed...
Published in: | Limnology |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer Science and Business Media LLC
2020
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1007/s10201-020-00624-0 https://link.springer.com/content/pdf/10.1007/s10201-020-00624-0.pdf https://link.springer.com/article/10.1007/s10201-020-00624-0/fulltext.html |
id |
crspringernat:10.1007/s10201-020-00624-0 |
---|---|
record_format |
openpolar |
spelling |
crspringernat:10.1007/s10201-020-00624-0 2023-05-15T17:45:12+02:00 Functional diversity of chironomid communities in subarctic lakes across gradients in temperature and catchment characteristics Belle, Simon Goedkoop, Willem 2020 http://dx.doi.org/10.1007/s10201-020-00624-0 https://link.springer.com/content/pdf/10.1007/s10201-020-00624-0.pdf https://link.springer.com/article/10.1007/s10201-020-00624-0/fulltext.html en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Limnology volume 22, issue 1, page 5-16 ISSN 1439-8621 1439-863X Water Science and Technology Aquatic Science Ecology journal-article 2020 crspringernat https://doi.org/10.1007/s10201-020-00624-0 2022-01-04T16:07:59Z Abstract Northern ecosystems are experiencing rapid and large-scale changes driven by accelerated warming, which have profound effects on the terrestrial and freshwater biodiversity. A comprehensive understanding of the distribution of aquatic biodiversity of subarctic ecosystems is therefore needed to better predict future trajectories of their unique biodiversity. In this study, we examined the functional diversity of chironomid communities in subarctic lakes across a 1000 m-elevation gradient, reflecting gradual changes in temperature and landscape characteristics. Using fuzzy correspondence analyses, we investigated spatial variability in trait composition of chironomid communities from 100 lakes in northern Sweden, and tested the hypotheses that (1) climate directly and indirectly shapes chironomid trait composition across the studied gradient, and (2) that generalist taxa with smaller body size and broader food preferences are more able to persist in cold environments. Our results showed that complex interplays between direct (e.g. temperature) and indirect climate processes (e.g. elevation-driven changes in vegetation/habitats) affect the functional diversity of chironomid communities. Specifically, traits such as larval size, food preference and feeding habits were well separated along the gradient, and this pattern revealed that low elevation lakes with forested catchments tended to have more sediment-feeding taxa and larger larvae than those above the tree line. As expected, food resource availability in lakes is strongly linked to vegetation composition/cover, and traits related to resource exploitation in chironomid communities are therefore well constrained by landscape characteristics. Furthermore, our findings suggested that short life cycles could facilitate the development of viable population in northern and high-elevation lakes where the short ice-free period is a limiting factor, thus contradicting patterns showing smaller organisms in warmer environments reported for other invertebrates. As a consequence of climate warming, the highest elevation lakes in subarctic landscapes will likely lose their typical cold-adapted chironomid taxa along with their functional attributes leading to potential impacts on the food web structure and the overall functioning of northern lake ecosystems. Article in Journal/Newspaper Northern Sweden Subarctic Springer Nature (via Crossref) Limnology 22 1 5 16 |
institution |
Open Polar |
collection |
Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
Water Science and Technology Aquatic Science Ecology |
spellingShingle |
Water Science and Technology Aquatic Science Ecology Belle, Simon Goedkoop, Willem Functional diversity of chironomid communities in subarctic lakes across gradients in temperature and catchment characteristics |
topic_facet |
Water Science and Technology Aquatic Science Ecology |
description |
Abstract Northern ecosystems are experiencing rapid and large-scale changes driven by accelerated warming, which have profound effects on the terrestrial and freshwater biodiversity. A comprehensive understanding of the distribution of aquatic biodiversity of subarctic ecosystems is therefore needed to better predict future trajectories of their unique biodiversity. In this study, we examined the functional diversity of chironomid communities in subarctic lakes across a 1000 m-elevation gradient, reflecting gradual changes in temperature and landscape characteristics. Using fuzzy correspondence analyses, we investigated spatial variability in trait composition of chironomid communities from 100 lakes in northern Sweden, and tested the hypotheses that (1) climate directly and indirectly shapes chironomid trait composition across the studied gradient, and (2) that generalist taxa with smaller body size and broader food preferences are more able to persist in cold environments. Our results showed that complex interplays between direct (e.g. temperature) and indirect climate processes (e.g. elevation-driven changes in vegetation/habitats) affect the functional diversity of chironomid communities. Specifically, traits such as larval size, food preference and feeding habits were well separated along the gradient, and this pattern revealed that low elevation lakes with forested catchments tended to have more sediment-feeding taxa and larger larvae than those above the tree line. As expected, food resource availability in lakes is strongly linked to vegetation composition/cover, and traits related to resource exploitation in chironomid communities are therefore well constrained by landscape characteristics. Furthermore, our findings suggested that short life cycles could facilitate the development of viable population in northern and high-elevation lakes where the short ice-free period is a limiting factor, thus contradicting patterns showing smaller organisms in warmer environments reported for other invertebrates. As a consequence of climate warming, the highest elevation lakes in subarctic landscapes will likely lose their typical cold-adapted chironomid taxa along with their functional attributes leading to potential impacts on the food web structure and the overall functioning of northern lake ecosystems. |
format |
Article in Journal/Newspaper |
author |
Belle, Simon Goedkoop, Willem |
author_facet |
Belle, Simon Goedkoop, Willem |
author_sort |
Belle, Simon |
title |
Functional diversity of chironomid communities in subarctic lakes across gradients in temperature and catchment characteristics |
title_short |
Functional diversity of chironomid communities in subarctic lakes across gradients in temperature and catchment characteristics |
title_full |
Functional diversity of chironomid communities in subarctic lakes across gradients in temperature and catchment characteristics |
title_fullStr |
Functional diversity of chironomid communities in subarctic lakes across gradients in temperature and catchment characteristics |
title_full_unstemmed |
Functional diversity of chironomid communities in subarctic lakes across gradients in temperature and catchment characteristics |
title_sort |
functional diversity of chironomid communities in subarctic lakes across gradients in temperature and catchment characteristics |
publisher |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
http://dx.doi.org/10.1007/s10201-020-00624-0 https://link.springer.com/content/pdf/10.1007/s10201-020-00624-0.pdf https://link.springer.com/article/10.1007/s10201-020-00624-0/fulltext.html |
genre |
Northern Sweden Subarctic |
genre_facet |
Northern Sweden Subarctic |
op_source |
Limnology volume 22, issue 1, page 5-16 ISSN 1439-8621 1439-863X |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s10201-020-00624-0 |
container_title |
Limnology |
container_volume |
22 |
container_issue |
1 |
container_start_page |
5 |
op_container_end_page |
16 |
_version_ |
1766148039040303104 |