Recent changes in chironomid communities and hypolimnetic oxygen conditions relate to organic carbon in subarctic ecotonal lakes
A key question in aquatic elemental cycling is related to the influence of bottom water oxygen conditions in regulating the burial and release of carbon under climate warming. In this study, we used head capsules of Chironomidae larvae to assess community and diversity change between the past (estim...
Published in: | Science of The Total Environment |
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/317927 2024-01-07T09:46:54+01:00 Recent changes in chironomid communities and hypolimnetic oxygen conditions relate to organic carbon in subarctic ecotonal lakes Luoto, Tomi P. Rantala, Marttiina V. Kivilä, E. Henriikka Nevalainen, Liisa Ecosystems and Environment Research Programme Faculty of Biological and Environmental Sciences Environmental Change Research Unit (ECRU) 2020-07-26T00:32:12Z 7 application/pdf http://hdl.handle.net/10138/317927 eng eng Elsevier Scientific Publ. Co 10.1016/j.scitotenv.2018.07.306 This work was supported by the Emil Aaltonen Foundation [grant numbers 160156, 170161 and 180151] and Academy of Finland [grant numbers 287547, 308954]. We are grateful for Annukka Galkin and the Kevo Research Station staff for help with the fieldwork. Comments by four journal reviewers greatly helped in improving the manuscript. Luoto , T P , Rantala , M V , Kivilä , E H & Nevalainen , L 2019 , ' Recent changes in chironomid communities and hypolimnetic oxygen conditions relate to organic carbon in subarctic ecotonal lakes ' , The Science of the Total Environment , vol. 646 , pp. 238-244 . https://doi.org/10.1016/j.scitotenv.2018.07.306 ORCID: /0000-0001-6925-3688/work/49408896 ORCID: /0000-0002-3231-5926/work/49416846 ORCID: /0000-0001-6837-8753/work/49414737 85050498370 0725c567-55ad-4244-80e5-d81d83ad24f9 http://hdl.handle.net/10138/317927 000445164800026 cc_by_nc_nd openAccess info:eu-repo/semantics/openAccess Chironomidae Dissolved oxygen Lapland DOC Paleolimnology Top-bottom approach FRESH-WATER ECOSYSTEMS CLIMATE-CHANGE SOUTHERN FINLAND SUBFOSSIL CHIRONOMIDS CALIBRATION MODEL NUTRIENT DYNAMICS MIDGES DIPTERA GREENHOUSE-GAS TEMPERATURE RECONSTRUCTIONS 1172 Environmental sciences Article acceptedVersion 2020 ftunivhelsihelda 2023-12-14T00:05:37Z A key question in aquatic elemental cycling is related to the influence of bottom water oxygen conditions in regulating the burial and release of carbon under climate warming. In this study, we used head capsules of Chironomidae larvae to assess community and diversity change between the past (estimated as Pre-Industrial Period) and present and to reconstruct changes in hypolimnetic oxygen conditions from 30 subarctic ecotonal lakes (northeastern Lapland) using the top-bottom paleolimnological approach applying surface sediment (topmost 0-2 cm) and reference (4-5 cm) samples. Subsequently, we tested the findings against dissolved organic carbon (DOC) concentration of the sites. We found that the benthic communities were statistically dissimilar between the past and the present with largest changes occurring in the more transparent oligo-mesohumic lakes. However, murky polyhumic lakes displayed uniformly a decrease in diversity. The chironomid-inferred oxygen values showed a general decrease toward the present with largest shifts in low-DOC lakes, whereas no significant changes were found in the hypolimnetic oxygen conditions of high-DOC lakes, which were often located in wet-land areas. These finding suggest that lakes associated with constant organic carbon inputs are more resilient toward climate-induced reductions in hypolimnetic oxygen. (c) 2018 Elsevier B.V. All rights reserved. Peer reviewed Article in Journal/Newspaper Subarctic Lapland HELDA – University of Helsinki Open Repository Science of The Total Environment 646 238 244 |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
Chironomidae Dissolved oxygen Lapland DOC Paleolimnology Top-bottom approach FRESH-WATER ECOSYSTEMS CLIMATE-CHANGE SOUTHERN FINLAND SUBFOSSIL CHIRONOMIDS CALIBRATION MODEL NUTRIENT DYNAMICS MIDGES DIPTERA GREENHOUSE-GAS TEMPERATURE RECONSTRUCTIONS 1172 Environmental sciences |
spellingShingle |
Chironomidae Dissolved oxygen Lapland DOC Paleolimnology Top-bottom approach FRESH-WATER ECOSYSTEMS CLIMATE-CHANGE SOUTHERN FINLAND SUBFOSSIL CHIRONOMIDS CALIBRATION MODEL NUTRIENT DYNAMICS MIDGES DIPTERA GREENHOUSE-GAS TEMPERATURE RECONSTRUCTIONS 1172 Environmental sciences Luoto, Tomi P. Rantala, Marttiina V. Kivilä, E. Henriikka Nevalainen, Liisa Recent changes in chironomid communities and hypolimnetic oxygen conditions relate to organic carbon in subarctic ecotonal lakes |
topic_facet |
Chironomidae Dissolved oxygen Lapland DOC Paleolimnology Top-bottom approach FRESH-WATER ECOSYSTEMS CLIMATE-CHANGE SOUTHERN FINLAND SUBFOSSIL CHIRONOMIDS CALIBRATION MODEL NUTRIENT DYNAMICS MIDGES DIPTERA GREENHOUSE-GAS TEMPERATURE RECONSTRUCTIONS 1172 Environmental sciences |
description |
A key question in aquatic elemental cycling is related to the influence of bottom water oxygen conditions in regulating the burial and release of carbon under climate warming. In this study, we used head capsules of Chironomidae larvae to assess community and diversity change between the past (estimated as Pre-Industrial Period) and present and to reconstruct changes in hypolimnetic oxygen conditions from 30 subarctic ecotonal lakes (northeastern Lapland) using the top-bottom paleolimnological approach applying surface sediment (topmost 0-2 cm) and reference (4-5 cm) samples. Subsequently, we tested the findings against dissolved organic carbon (DOC) concentration of the sites. We found that the benthic communities were statistically dissimilar between the past and the present with largest changes occurring in the more transparent oligo-mesohumic lakes. However, murky polyhumic lakes displayed uniformly a decrease in diversity. The chironomid-inferred oxygen values showed a general decrease toward the present with largest shifts in low-DOC lakes, whereas no significant changes were found in the hypolimnetic oxygen conditions of high-DOC lakes, which were often located in wet-land areas. These finding suggest that lakes associated with constant organic carbon inputs are more resilient toward climate-induced reductions in hypolimnetic oxygen. (c) 2018 Elsevier B.V. All rights reserved. Peer reviewed |
author2 |
Ecosystems and Environment Research Programme Faculty of Biological and Environmental Sciences Environmental Change Research Unit (ECRU) |
format |
Article in Journal/Newspaper |
author |
Luoto, Tomi P. Rantala, Marttiina V. Kivilä, E. Henriikka Nevalainen, Liisa |
author_facet |
Luoto, Tomi P. Rantala, Marttiina V. Kivilä, E. Henriikka Nevalainen, Liisa |
author_sort |
Luoto, Tomi P. |
title |
Recent changes in chironomid communities and hypolimnetic oxygen conditions relate to organic carbon in subarctic ecotonal lakes |
title_short |
Recent changes in chironomid communities and hypolimnetic oxygen conditions relate to organic carbon in subarctic ecotonal lakes |
title_full |
Recent changes in chironomid communities and hypolimnetic oxygen conditions relate to organic carbon in subarctic ecotonal lakes |
title_fullStr |
Recent changes in chironomid communities and hypolimnetic oxygen conditions relate to organic carbon in subarctic ecotonal lakes |
title_full_unstemmed |
Recent changes in chironomid communities and hypolimnetic oxygen conditions relate to organic carbon in subarctic ecotonal lakes |
title_sort |
recent changes in chironomid communities and hypolimnetic oxygen conditions relate to organic carbon in subarctic ecotonal lakes |
publisher |
Elsevier Scientific Publ. Co |
publishDate |
2020 |
url |
http://hdl.handle.net/10138/317927 |
genre |
Subarctic Lapland |
genre_facet |
Subarctic Lapland |
op_relation |
10.1016/j.scitotenv.2018.07.306 This work was supported by the Emil Aaltonen Foundation [grant numbers 160156, 170161 and 180151] and Academy of Finland [grant numbers 287547, 308954]. We are grateful for Annukka Galkin and the Kevo Research Station staff for help with the fieldwork. Comments by four journal reviewers greatly helped in improving the manuscript. Luoto , T P , Rantala , M V , Kivilä , E H & Nevalainen , L 2019 , ' Recent changes in chironomid communities and hypolimnetic oxygen conditions relate to organic carbon in subarctic ecotonal lakes ' , The Science of the Total Environment , vol. 646 , pp. 238-244 . https://doi.org/10.1016/j.scitotenv.2018.07.306 ORCID: /0000-0001-6925-3688/work/49408896 ORCID: /0000-0002-3231-5926/work/49416846 ORCID: /0000-0001-6837-8753/work/49414737 85050498370 0725c567-55ad-4244-80e5-d81d83ad24f9 http://hdl.handle.net/10138/317927 000445164800026 |
op_rights |
cc_by_nc_nd openAccess info:eu-repo/semantics/openAccess |
container_title |
Science of The Total Environment |
container_volume |
646 |
container_start_page |
238 |
op_container_end_page |
244 |
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1787428824910135296 |