Biogeochemical cycling and ecological thresholds in a High Arctic lake (Svalbard)
Lakes are a dominant feature of the Arctic landscape and a focal point of regional and global biogeochemical cycling. We collected a sediment core from a High Arctic Lake in southwestern Svalbard for multiproxy paleolimnological analysis. The aim was to find linkages between the terrestrial and aqua...
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ftjyvaeskylaenun:oai:jyx.jyu.fi:123456789/63195 2024-02-04T09:56:40+01:00 Biogeochemical cycling and ecological thresholds in a High Arctic lake (Svalbard) Luoto, Tomi P. Rantala, Marttiina V. Kivilä, Henriikka Nevalainen, Liisa Ojala, Antti E. K. 2019 application/pdf fulltext http://urn.fi/URN:NBN:fi:jyu-201903131854 eng eng Springer Aquatic Sciences 1015-1621 2 81 10.1007/s00027-019-0630-7 Luoto, T. P., Rantala, M. V., Kivilä, H., Nevalainen, L., & Ojala, A. E. K. (2019). Biogeochemical cycling and ecological thresholds in a High Arctic lake (Svalbard). Aquatic Sciences , 81 (2), Article 34. https://doi.org/10.1007/s00027-019-0630-7 CONVID_28972018 TUTKAID_80968 URN:NBN:fi:jyu-201903131854 http://urn.fi/URN:NBN:fi:jyu-201903131854 CC BY 4.0 © The Author(s) 2019. openAccess https://creativecommons.org/licenses/by/4.0/ bird guano microplastic paleolimnologia arktinen alue aineiden kierto hiilen kierto ravinnekierto mikroroskat ilmastonmuutokset piilevät surviaissääsket lintukannat hiili typpi article http://purl.org/eprint/type/JournalArticle http://purl.org/coar/resource_type/c_2df8fbb1 publishedVersion A1 2019 ftjyvaeskylaenun 2024-01-11T00:02:32Z Lakes are a dominant feature of the Arctic landscape and a focal point of regional and global biogeochemical cycling. We collected a sediment core from a High Arctic Lake in southwestern Svalbard for multiproxy paleolimnological analysis. The aim was to find linkages between the terrestrial and aquatic environments in the context of climate change to understand centennial-long Arctic biogeochemical cycling and environmental dynamics. Two significant thresholds in elemental cycling were found based on sediment physical and biogeochemical proxies that were associated with the end of the cold Little Ice Age and the recent warming. We found major shifts in diatom, chironomid and cladoceran communities and their functionality that coincided with increased summer temperatures since the 1950s. We also discovered paleoecological evidence that point toward expanded bird (Little Auk) colonies in the catchment alongside climate warming. Apparently, climate-driven increase in glacier melt water delivery as well as a prolonged snow- and ice-free period have increased the transport of mineral matter from the catchment, causing significant water turbidity and disappearance of several planktonic diatoms and clear-water chironomids. We also found sedimentary accumulation of microplastic particles following the increase in Little Auk populations suggesting that seabirds potentially act as biovectors for plastic contamination. Our study demonstrates the diverse nature of climate-driven changes in the Arctic lacustrine environment with increased inorganic input from the more exposed catchment, larger nutrient delivery from the increased bird colonies at the surrounding mountain summits and subsequent alterations in aquatic communities. peerReviewed Article in Journal/Newspaper Arctic Arctic Arktinen alue Climate change glacier little auk Svalbard JYX - Jyväskylä University Digital Archive Arctic Arctic Lake ENVELOPE(-130.826,-130.826,57.231,57.231) Guano ENVELOPE(141.604,141.604,-66.775,-66.775) Svalbard |
institution |
Open Polar |
collection |
JYX - Jyväskylä University Digital Archive |
op_collection_id |
ftjyvaeskylaenun |
language |
English |
topic |
bird guano microplastic paleolimnologia arktinen alue aineiden kierto hiilen kierto ravinnekierto mikroroskat ilmastonmuutokset piilevät surviaissääsket lintukannat hiili typpi |
spellingShingle |
bird guano microplastic paleolimnologia arktinen alue aineiden kierto hiilen kierto ravinnekierto mikroroskat ilmastonmuutokset piilevät surviaissääsket lintukannat hiili typpi Luoto, Tomi P. Rantala, Marttiina V. Kivilä, Henriikka Nevalainen, Liisa Ojala, Antti E. K. Biogeochemical cycling and ecological thresholds in a High Arctic lake (Svalbard) |
topic_facet |
bird guano microplastic paleolimnologia arktinen alue aineiden kierto hiilen kierto ravinnekierto mikroroskat ilmastonmuutokset piilevät surviaissääsket lintukannat hiili typpi |
description |
Lakes are a dominant feature of the Arctic landscape and a focal point of regional and global biogeochemical cycling. We collected a sediment core from a High Arctic Lake in southwestern Svalbard for multiproxy paleolimnological analysis. The aim was to find linkages between the terrestrial and aquatic environments in the context of climate change to understand centennial-long Arctic biogeochemical cycling and environmental dynamics. Two significant thresholds in elemental cycling were found based on sediment physical and biogeochemical proxies that were associated with the end of the cold Little Ice Age and the recent warming. We found major shifts in diatom, chironomid and cladoceran communities and their functionality that coincided with increased summer temperatures since the 1950s. We also discovered paleoecological evidence that point toward expanded bird (Little Auk) colonies in the catchment alongside climate warming. Apparently, climate-driven increase in glacier melt water delivery as well as a prolonged snow- and ice-free period have increased the transport of mineral matter from the catchment, causing significant water turbidity and disappearance of several planktonic diatoms and clear-water chironomids. We also found sedimentary accumulation of microplastic particles following the increase in Little Auk populations suggesting that seabirds potentially act as biovectors for plastic contamination. Our study demonstrates the diverse nature of climate-driven changes in the Arctic lacustrine environment with increased inorganic input from the more exposed catchment, larger nutrient delivery from the increased bird colonies at the surrounding mountain summits and subsequent alterations in aquatic communities. peerReviewed |
format |
Article in Journal/Newspaper |
author |
Luoto, Tomi P. Rantala, Marttiina V. Kivilä, Henriikka Nevalainen, Liisa Ojala, Antti E. K. |
author_facet |
Luoto, Tomi P. Rantala, Marttiina V. Kivilä, Henriikka Nevalainen, Liisa Ojala, Antti E. K. |
author_sort |
Luoto, Tomi P. |
title |
Biogeochemical cycling and ecological thresholds in a High Arctic lake (Svalbard) |
title_short |
Biogeochemical cycling and ecological thresholds in a High Arctic lake (Svalbard) |
title_full |
Biogeochemical cycling and ecological thresholds in a High Arctic lake (Svalbard) |
title_fullStr |
Biogeochemical cycling and ecological thresholds in a High Arctic lake (Svalbard) |
title_full_unstemmed |
Biogeochemical cycling and ecological thresholds in a High Arctic lake (Svalbard) |
title_sort |
biogeochemical cycling and ecological thresholds in a high arctic lake (svalbard) |
publisher |
Springer |
publishDate |
2019 |
url |
http://urn.fi/URN:NBN:fi:jyu-201903131854 |
long_lat |
ENVELOPE(-130.826,-130.826,57.231,57.231) ENVELOPE(141.604,141.604,-66.775,-66.775) |
geographic |
Arctic Arctic Lake Guano Svalbard |
geographic_facet |
Arctic Arctic Lake Guano Svalbard |
genre |
Arctic Arctic Arktinen alue Climate change glacier little auk Svalbard |
genre_facet |
Arctic Arctic Arktinen alue Climate change glacier little auk Svalbard |
op_relation |
Aquatic Sciences 1015-1621 2 81 10.1007/s00027-019-0630-7 Luoto, T. P., Rantala, M. V., Kivilä, H., Nevalainen, L., & Ojala, A. E. K. (2019). Biogeochemical cycling and ecological thresholds in a High Arctic lake (Svalbard). Aquatic Sciences , 81 (2), Article 34. https://doi.org/10.1007/s00027-019-0630-7 CONVID_28972018 TUTKAID_80968 URN:NBN:fi:jyu-201903131854 http://urn.fi/URN:NBN:fi:jyu-201903131854 |
op_rights |
CC BY 4.0 © The Author(s) 2019. openAccess https://creativecommons.org/licenses/by/4.0/ |
_version_ |
1789961073945739264 |