Invertebrate communities of the High Arctic ponds in Hornsund
How environmental conditions influence current distributions of organisms at the local scale in sensitive high Arctic freshwaters is essential to understand in order to better comprehend the cascading consequences of the ongoing climate change. This knowledge is also important background data for pa...
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Polish Academy of Sciences. Committee on Polar Research
2017
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/174954 2024-01-07T09:40:36+01:00 Invertebrate communities of the High Arctic ponds in Hornsund Luoto, Tomi P. Oksman, Mimmi Ojala, Antti E.K. Department of Geosciences and Geography Division of Geology and Geochemistry Environmental Change Research Unit (ECRU) 2017-02-09T08:22:01Z 15 application/pdf http://hdl.handle.net/10138/174954 eng eng Polish Academy of Sciences. Committee on Polar Research 10.1515/popore-2016-0003 Luoto , T P , Oksman , M & Ojala , A E K 2016 , ' Invertebrate communities of the High Arctic ponds in Hornsund ' , Polish Polar Research , vol. 37 , no. 1 , pp. 105-119 . https://doi.org/10.1515/popore-2016-0003 ORCID: /0000-0001-6925-3688/work/36750097 84962645827 8d9e58c9-c219-44fd-a7f5-45f69eb1f526 http://hdl.handle.net/10138/174954 000372467800006 cc_by_nc_nd openAccess info:eu-repo/semantics/openAccess 1172 Environmental sciences 1181 Ecology evolutionary biology Article publishedVersion 2017 ftunivhelsihelda 2023-12-14T00:13:34Z How environmental conditions influence current distributions of organisms at the local scale in sensitive high Arctic freshwaters is essential to understand in order to better comprehend the cascading consequences of the ongoing climate change. This knowledge is also important background data for paleolimnological assessments of long-term limnoecological changes and in describing the range of environmental variability. We sampled five limnologically different freshwater sites from the Fuglebergsletta marine terrace in Hornsund, southern Svalbard, for aquatic invertebrates. The invertebrate communities were tested against non-climatic environmental drivers (limnological and catchment variables). A clear separation in the communities between the sites was observed. The largest and deepest lake was characterized by a diverse Chironomidae community but Cladocera were absent. In a pond with marine influence, crustaceans, such as Ostracoda, Amphipoda, and calanoid Copepoda were the most abundant invertebrates. Two nutrient-rich ponds were dominated by a chironomid, Orthocladius consobrinus, whereas the most eutrophic pond was dominated by the cladoceran Daphnia pulex suggesting decreasing diversity along with the trophic status. Overall, nutrient related variables appeared to have an important influence on the invertebrate community composition and diversity, the trophic state of the sites being linked with their exposure to geese guano. Other segregating variables included water color, presence/absence of fish, abundance of aquatic vegetation and lake depth. These results suggest that since most of these variables are climate-driven at a larger scale, the impacts of the ongoing climate change will have cumulative effects on aquatic ecosystems. How environmental conditions influence current distributions of organisms at the local scale in sensitive High Arctic freshwaters is essential to understand in order to better comprehend the cascading consequences of the ongoing climate change. This knowledge is also ... Article in Journal/Newspaper Arctic Arctic Climate change Hornsund Polar Research Svalbard HELDA – University of Helsinki Open Repository Arctic Svalbard Guano ENVELOPE(141.604,141.604,-66.775,-66.775) Hornsund ENVELOPE(15.865,15.865,76.979,76.979) Fuglebergsletta ENVELOPE(15.536,15.536,77.002,77.002) Polish Polar Research 37 1 105 119 |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
1172 Environmental sciences 1181 Ecology evolutionary biology |
spellingShingle |
1172 Environmental sciences 1181 Ecology evolutionary biology Luoto, Tomi P. Oksman, Mimmi Ojala, Antti E.K. Invertebrate communities of the High Arctic ponds in Hornsund |
topic_facet |
1172 Environmental sciences 1181 Ecology evolutionary biology |
description |
How environmental conditions influence current distributions of organisms at the local scale in sensitive high Arctic freshwaters is essential to understand in order to better comprehend the cascading consequences of the ongoing climate change. This knowledge is also important background data for paleolimnological assessments of long-term limnoecological changes and in describing the range of environmental variability. We sampled five limnologically different freshwater sites from the Fuglebergsletta marine terrace in Hornsund, southern Svalbard, for aquatic invertebrates. The invertebrate communities were tested against non-climatic environmental drivers (limnological and catchment variables). A clear separation in the communities between the sites was observed. The largest and deepest lake was characterized by a diverse Chironomidae community but Cladocera were absent. In a pond with marine influence, crustaceans, such as Ostracoda, Amphipoda, and calanoid Copepoda were the most abundant invertebrates. Two nutrient-rich ponds were dominated by a chironomid, Orthocladius consobrinus, whereas the most eutrophic pond was dominated by the cladoceran Daphnia pulex suggesting decreasing diversity along with the trophic status. Overall, nutrient related variables appeared to have an important influence on the invertebrate community composition and diversity, the trophic state of the sites being linked with their exposure to geese guano. Other segregating variables included water color, presence/absence of fish, abundance of aquatic vegetation and lake depth. These results suggest that since most of these variables are climate-driven at a larger scale, the impacts of the ongoing climate change will have cumulative effects on aquatic ecosystems. How environmental conditions influence current distributions of organisms at the local scale in sensitive High Arctic freshwaters is essential to understand in order to better comprehend the cascading consequences of the ongoing climate change. This knowledge is also ... |
author2 |
Department of Geosciences and Geography Division of Geology and Geochemistry Environmental Change Research Unit (ECRU) |
format |
Article in Journal/Newspaper |
author |
Luoto, Tomi P. Oksman, Mimmi Ojala, Antti E.K. |
author_facet |
Luoto, Tomi P. Oksman, Mimmi Ojala, Antti E.K. |
author_sort |
Luoto, Tomi P. |
title |
Invertebrate communities of the High Arctic ponds in Hornsund |
title_short |
Invertebrate communities of the High Arctic ponds in Hornsund |
title_full |
Invertebrate communities of the High Arctic ponds in Hornsund |
title_fullStr |
Invertebrate communities of the High Arctic ponds in Hornsund |
title_full_unstemmed |
Invertebrate communities of the High Arctic ponds in Hornsund |
title_sort |
invertebrate communities of the high arctic ponds in hornsund |
publisher |
Polish Academy of Sciences. Committee on Polar Research |
publishDate |
2017 |
url |
http://hdl.handle.net/10138/174954 |
long_lat |
ENVELOPE(141.604,141.604,-66.775,-66.775) ENVELOPE(15.865,15.865,76.979,76.979) ENVELOPE(15.536,15.536,77.002,77.002) |
geographic |
Arctic Svalbard Guano Hornsund Fuglebergsletta |
geographic_facet |
Arctic Svalbard Guano Hornsund Fuglebergsletta |
genre |
Arctic Arctic Climate change Hornsund Polar Research Svalbard |
genre_facet |
Arctic Arctic Climate change Hornsund Polar Research Svalbard |
op_relation |
10.1515/popore-2016-0003 Luoto , T P , Oksman , M & Ojala , A E K 2016 , ' Invertebrate communities of the High Arctic ponds in Hornsund ' , Polish Polar Research , vol. 37 , no. 1 , pp. 105-119 . https://doi.org/10.1515/popore-2016-0003 ORCID: /0000-0001-6925-3688/work/36750097 84962645827 8d9e58c9-c219-44fd-a7f5-45f69eb1f526 http://hdl.handle.net/10138/174954 000372467800006 |
op_rights |
cc_by_nc_nd openAccess info:eu-repo/semantics/openAccess |
container_title |
Polish Polar Research |
container_volume |
37 |
container_issue |
1 |
container_start_page |
105 |
op_container_end_page |
119 |
_version_ |
1787421460105527296 |