Late-Holocene variability in chironomid functional assemblages and carbon utilization in a tundra lake food web
High latitude freshwater systems are facing changes in catchment-mediated allochthonous input, as well as physical and chemical controls triggered by on-going climate change, which may alter their carbon processing and ecological characteristics. To explore changes in chironomid functional responses...
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/317224 2024-01-07T09:41:46+01:00 Late-Holocene variability in chironomid functional assemblages and carbon utilization in a tundra lake food web Kivilä, Elissa Henriikka Luoto, Tomi P. Rantala, Marttiina V. Nevalainen, Liisa Ecosystems and Environment Research Programme 2020-07-01T13:35:02Z 17 application/pdf http://hdl.handle.net/10138/317224 eng eng Springer 10.1007/s10750-019-04151-7 Kivilä , E H , Luoto , T P , Rantala , M V & Nevalainen , L 2020 , ' Late-Holocene variability in chironomid functional assemblages and carbon utilization in a tundra lake food web ' , Hydrobiologia , vol. 847 , no. 3 , pp. 895-911 . https://doi.org/10.1007/s10750-019-04151-7 ORCID: /0000-0001-6925-3688/work/76723394 ORCID: /0000-0002-3231-5926/work/76726513 ORCID: /0000-0001-6837-8753/work/76727908 0c8bd699-0272-4195-9041-492b990463ea http://hdl.handle.net/10138/317224 000512108400016 cc_by openAccess info:eu-repo/semantics/openAccess 1181 Ecology evolutionary biology Environmental change Climate change Functional paleoecology Paleolimnology Scandinavia Stable isotopes ORGANIC-MATTER ARCTIC LAKES NITROGEN DEPOSITION ISOTOPE COMPOSITION CLIMATE BIODIVERSITY SEDIMENTS FINLAND EUTROPHICATION TERRESTRIAL Article publishedVersion 2020 ftunivhelsihelda 2023-12-14T00:05:17Z High latitude freshwater systems are facing changes in catchment-mediated allochthonous input, as well as physical and chemical controls triggered by on-going climate change, which may alter their carbon processing and ecological characteristics. To explore changes in chironomid functional responses and carbon utilization in relation to longterm environmental change, we studied a sediment core covering ca. 2000 years from a tundra lake in northern Finland, which was analysed for sediment geochemistry, isotopic composition of chironomid remains and their functional assemblages. We aimed to relate changes in chironomid functional feeding assemblages and resource utilization, based on Bayesian stable isotope modelling, and determined that the long-term resource utilization was more controlled by sediment geochemistry (resource availability) and climatic variables, reflecting changes in habitat and lake ontogeny, rather than the functional feeding assemblage composition. Change horizons were observed for both sediment geochemistry and functional assemblage composition. However, different timing of these changes suggests different drivers affecting the dynamics of primary production and chironomid community functionality. We also compared the recent warming period to Medieval Climate Anomaly (MCA), observing divergent patterns, which suggests that MCA may not be a good analogue for changes induced by on-going climate warming. Peer reviewed Article in Journal/Newspaper Arctic Climate change Northern Finland Tundra HELDA – University of Helsinki Open Repository Arctic Hydrobiologia 847 3 895 911 |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
1181 Ecology evolutionary biology Environmental change Climate change Functional paleoecology Paleolimnology Scandinavia Stable isotopes ORGANIC-MATTER ARCTIC LAKES NITROGEN DEPOSITION ISOTOPE COMPOSITION CLIMATE BIODIVERSITY SEDIMENTS FINLAND EUTROPHICATION TERRESTRIAL |
spellingShingle |
1181 Ecology evolutionary biology Environmental change Climate change Functional paleoecology Paleolimnology Scandinavia Stable isotopes ORGANIC-MATTER ARCTIC LAKES NITROGEN DEPOSITION ISOTOPE COMPOSITION CLIMATE BIODIVERSITY SEDIMENTS FINLAND EUTROPHICATION TERRESTRIAL Kivilä, Elissa Henriikka Luoto, Tomi P. Rantala, Marttiina V. Nevalainen, Liisa Late-Holocene variability in chironomid functional assemblages and carbon utilization in a tundra lake food web |
topic_facet |
1181 Ecology evolutionary biology Environmental change Climate change Functional paleoecology Paleolimnology Scandinavia Stable isotopes ORGANIC-MATTER ARCTIC LAKES NITROGEN DEPOSITION ISOTOPE COMPOSITION CLIMATE BIODIVERSITY SEDIMENTS FINLAND EUTROPHICATION TERRESTRIAL |
description |
High latitude freshwater systems are facing changes in catchment-mediated allochthonous input, as well as physical and chemical controls triggered by on-going climate change, which may alter their carbon processing and ecological characteristics. To explore changes in chironomid functional responses and carbon utilization in relation to longterm environmental change, we studied a sediment core covering ca. 2000 years from a tundra lake in northern Finland, which was analysed for sediment geochemistry, isotopic composition of chironomid remains and their functional assemblages. We aimed to relate changes in chironomid functional feeding assemblages and resource utilization, based on Bayesian stable isotope modelling, and determined that the long-term resource utilization was more controlled by sediment geochemistry (resource availability) and climatic variables, reflecting changes in habitat and lake ontogeny, rather than the functional feeding assemblage composition. Change horizons were observed for both sediment geochemistry and functional assemblage composition. However, different timing of these changes suggests different drivers affecting the dynamics of primary production and chironomid community functionality. We also compared the recent warming period to Medieval Climate Anomaly (MCA), observing divergent patterns, which suggests that MCA may not be a good analogue for changes induced by on-going climate warming. Peer reviewed |
author2 |
Ecosystems and Environment Research Programme |
format |
Article in Journal/Newspaper |
author |
Kivilä, Elissa Henriikka Luoto, Tomi P. Rantala, Marttiina V. Nevalainen, Liisa |
author_facet |
Kivilä, Elissa Henriikka Luoto, Tomi P. Rantala, Marttiina V. Nevalainen, Liisa |
author_sort |
Kivilä, Elissa Henriikka |
title |
Late-Holocene variability in chironomid functional assemblages and carbon utilization in a tundra lake food web |
title_short |
Late-Holocene variability in chironomid functional assemblages and carbon utilization in a tundra lake food web |
title_full |
Late-Holocene variability in chironomid functional assemblages and carbon utilization in a tundra lake food web |
title_fullStr |
Late-Holocene variability in chironomid functional assemblages and carbon utilization in a tundra lake food web |
title_full_unstemmed |
Late-Holocene variability in chironomid functional assemblages and carbon utilization in a tundra lake food web |
title_sort |
late-holocene variability in chironomid functional assemblages and carbon utilization in a tundra lake food web |
publisher |
Springer |
publishDate |
2020 |
url |
http://hdl.handle.net/10138/317224 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Northern Finland Tundra |
genre_facet |
Arctic Climate change Northern Finland Tundra |
op_relation |
10.1007/s10750-019-04151-7 Kivilä , E H , Luoto , T P , Rantala , M V & Nevalainen , L 2020 , ' Late-Holocene variability in chironomid functional assemblages and carbon utilization in a tundra lake food web ' , Hydrobiologia , vol. 847 , no. 3 , pp. 895-911 . https://doi.org/10.1007/s10750-019-04151-7 ORCID: /0000-0001-6925-3688/work/76723394 ORCID: /0000-0002-3231-5926/work/76726513 ORCID: /0000-0001-6837-8753/work/76727908 0c8bd699-0272-4195-9041-492b990463ea http://hdl.handle.net/10138/317224 000512108400016 |
op_rights |
cc_by openAccess info:eu-repo/semantics/openAccess |
container_title |
Hydrobiologia |
container_volume |
847 |
container_issue |
3 |
container_start_page |
895 |
op_container_end_page |
911 |
_version_ |
1787422570134372352 |