Is Oxygenation Related to the Decomposition of Organic Matter in Cryoconite Holes?
Cryoconite is a sediment occurring on glacier surfaces worldwide which reduces ice albedo and concentrates glacier surface meltwater into small reservoirs called cryoconite holes. It consists of mineral and biogenic matter, including active microorganisms. This study presents an experimental insight...
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Format: | Article in Journal/Newspaper |
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Online Access: | https://hdl.handle.net/10281/396767 https://doi.org/10.1007/s10021-021-00729-2 |
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ftunivmilanobic:oai:boa.unimib.it:10281/396767 2024-04-14T08:00:28+00:00 Is Oxygenation Related to the Decomposition of Organic Matter in Cryoconite Holes? Buda J. Poniecka E. A. Rozwalak P. Ambrosini R. Bagshaw E. A. Franzetti A. Klimaszyk P. Nawrot A. Pietryka M. Richter D. Zawierucha K. Buda, J Poniecka, E Rozwalak, P Ambrosini, R Bagshaw, E Franzetti, A Klimaszyk, P Nawrot, A Pietryka, M Richter, D Zawierucha, K 2022 STAMPA https://hdl.handle.net/10281/396767 https://doi.org/10.1007/s10021-021-00729-2 eng eng Springer country:US info:eu-repo/semantics/altIdentifier/wos/WOS:000731195400001 volume:25 issue:7 firstpage:1510 lastpage:1521 numberofpages:12 journal:ECOSYSTEMS https://hdl.handle.net/10281/396767 doi:10.1007/s10021-021-00729-2 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85121396595 aerobic anaerobic decay glacier photoautotroph supraglacial info:eu-repo/semantics/article 2022 ftunivmilanobic https://doi.org/10.1007/s10021-021-00729-2 2024-03-21T17:24:28Z Cryoconite is a sediment occurring on glacier surfaces worldwide which reduces ice albedo and concentrates glacier surface meltwater into small reservoirs called cryoconite holes. It consists of mineral and biogenic matter, including active microorganisms. This study presents an experimental insight into the influence of sediment oxygenation on the cryoconite ability to produce and decomposition of organic matter. Samples were collected from five glaciers in the Arctic and the European mainland. Cryoconite from three glaciers was incubated in stagnant and mechanically mixed conditions to imitate inter-hole water–sediment mixing by meltwater occurring on glaciers in Northern Hemisphere, and its effect on oxygen profiles and organic matter content. Moreover, we investigated short-term changes of oxygen conditions in cryoconite from four glaciers in illuminated and dark conditions. An anaerobic zone was present or approaching zero oxygen in all illuminated cryoconite samples, varying in depth depending on the origin of cryoconite: from 1500 μm from Steindalsbreen (Scandinavian Peninsula) and Forni Glacier (The Alps) to 3100 μm from Russell Glacier and Longyearbreen (Arctic) after incubation. Organic matter content varied between glaciers from 6.11% on Longyearbreen to 16.36% on Russell Glacier. The mixed sediment from the Forni Glacier had less organic matter than stagnant, the sediment from Longyearbreen followed this trend, but the difference was not statistically significant, while the sediment from Ebenferner did not differ between groups. Our results have implications for the understanding of biogeochemical processes on glacier surfaces, the adaptation of organisms to changing physical conditions due to abrupt sediment mixing, but also on the estimation of productivity of supraglacial systems. Article in Journal/Newspaper albedo Arctic Longyearbreen Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) Arctic Longyearbreen ENVELOPE(15.517,15.517,78.183,78.183) Steindalsbreen ENVELOPE(19.879,19.879,69.394,69.394) Ecosystems 25 7 1510 1521 |
institution |
Open Polar |
collection |
Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) |
op_collection_id |
ftunivmilanobic |
language |
English |
topic |
aerobic anaerobic decay glacier photoautotroph supraglacial |
spellingShingle |
aerobic anaerobic decay glacier photoautotroph supraglacial Buda J. Poniecka E. A. Rozwalak P. Ambrosini R. Bagshaw E. A. Franzetti A. Klimaszyk P. Nawrot A. Pietryka M. Richter D. Zawierucha K. Is Oxygenation Related to the Decomposition of Organic Matter in Cryoconite Holes? |
topic_facet |
aerobic anaerobic decay glacier photoautotroph supraglacial |
description |
Cryoconite is a sediment occurring on glacier surfaces worldwide which reduces ice albedo and concentrates glacier surface meltwater into small reservoirs called cryoconite holes. It consists of mineral and biogenic matter, including active microorganisms. This study presents an experimental insight into the influence of sediment oxygenation on the cryoconite ability to produce and decomposition of organic matter. Samples were collected from five glaciers in the Arctic and the European mainland. Cryoconite from three glaciers was incubated in stagnant and mechanically mixed conditions to imitate inter-hole water–sediment mixing by meltwater occurring on glaciers in Northern Hemisphere, and its effect on oxygen profiles and organic matter content. Moreover, we investigated short-term changes of oxygen conditions in cryoconite from four glaciers in illuminated and dark conditions. An anaerobic zone was present or approaching zero oxygen in all illuminated cryoconite samples, varying in depth depending on the origin of cryoconite: from 1500 μm from Steindalsbreen (Scandinavian Peninsula) and Forni Glacier (The Alps) to 3100 μm from Russell Glacier and Longyearbreen (Arctic) after incubation. Organic matter content varied between glaciers from 6.11% on Longyearbreen to 16.36% on Russell Glacier. The mixed sediment from the Forni Glacier had less organic matter than stagnant, the sediment from Longyearbreen followed this trend, but the difference was not statistically significant, while the sediment from Ebenferner did not differ between groups. Our results have implications for the understanding of biogeochemical processes on glacier surfaces, the adaptation of organisms to changing physical conditions due to abrupt sediment mixing, but also on the estimation of productivity of supraglacial systems. |
author2 |
Buda, J Poniecka, E Rozwalak, P Ambrosini, R Bagshaw, E Franzetti, A Klimaszyk, P Nawrot, A Pietryka, M Richter, D Zawierucha, K |
format |
Article in Journal/Newspaper |
author |
Buda J. Poniecka E. A. Rozwalak P. Ambrosini R. Bagshaw E. A. Franzetti A. Klimaszyk P. Nawrot A. Pietryka M. Richter D. Zawierucha K. |
author_facet |
Buda J. Poniecka E. A. Rozwalak P. Ambrosini R. Bagshaw E. A. Franzetti A. Klimaszyk P. Nawrot A. Pietryka M. Richter D. Zawierucha K. |
author_sort |
Buda J. |
title |
Is Oxygenation Related to the Decomposition of Organic Matter in Cryoconite Holes? |
title_short |
Is Oxygenation Related to the Decomposition of Organic Matter in Cryoconite Holes? |
title_full |
Is Oxygenation Related to the Decomposition of Organic Matter in Cryoconite Holes? |
title_fullStr |
Is Oxygenation Related to the Decomposition of Organic Matter in Cryoconite Holes? |
title_full_unstemmed |
Is Oxygenation Related to the Decomposition of Organic Matter in Cryoconite Holes? |
title_sort |
is oxygenation related to the decomposition of organic matter in cryoconite holes? |
publisher |
Springer |
publishDate |
2022 |
url |
https://hdl.handle.net/10281/396767 https://doi.org/10.1007/s10021-021-00729-2 |
long_lat |
ENVELOPE(15.517,15.517,78.183,78.183) ENVELOPE(19.879,19.879,69.394,69.394) |
geographic |
Arctic Longyearbreen Steindalsbreen |
geographic_facet |
Arctic Longyearbreen Steindalsbreen |
genre |
albedo Arctic Longyearbreen |
genre_facet |
albedo Arctic Longyearbreen |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000731195400001 volume:25 issue:7 firstpage:1510 lastpage:1521 numberofpages:12 journal:ECOSYSTEMS https://hdl.handle.net/10281/396767 doi:10.1007/s10021-021-00729-2 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85121396595 |
op_doi |
https://doi.org/10.1007/s10021-021-00729-2 |
container_title |
Ecosystems |
container_volume |
25 |
container_issue |
7 |
container_start_page |
1510 |
op_container_end_page |
1521 |
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1796300773463687168 |