Factors infuencing bacterial dynamics along a transect from supraglacial runoff to proglacial lakes of a high Arctic glacieri
Bacterial production in glacial runoff and aquatic habitats along a c. 500m transect from the ablation area of a Svalbard glacier (Midre Lov´enbreen, 791N, 121E) down to a series of proglacial lakes in its forefield were assessed. In addition, a series of in situ experiments were conducted to test h...
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ftunivtasmania:oai:eprints.utas.edu.au:3460 2023-05-15T13:36:46+02:00 Factors infuencing bacterial dynamics along a transect from supraglacial runoff to proglacial lakes of a high Arctic glacieri Mindl, B Anesio, AM Meirer, K Hodson, A Laybourn-Parry, J Sommaruga, R Sattler, B 2007 application/pdf https://eprints.utas.edu.au/3460/ https://eprints.utas.edu.au/3460/1/MIndl__et__al.pdf https://doi.org/10.1111/j.1574-6941.2006.00262.x en eng https://eprints.utas.edu.au/3460/1/MIndl__et__al.pdf Mindl, B, Anesio, AM, Meirer, K, Hodson, A, Laybourn-Parry, J, Sommaruga, R and Sattler, B 2007 , 'Factors infuencing bacterial dynamics along a transect from supraglacial runoff to proglacial lakes of a high Arctic glacieri' , FEMS Microbiology Ecology, vol. 59, no. 2 , pp. 307-317 , doi:10.1111/j.1574-6941.2006.00262.x <http://dx.doi.org/10.1111/j.1574-6941.2006.00262.x>. cc_utas 270300 Microbiology 260000 Earth Sciences high arctic glacier supraglacial melt water; proglacial lakes; bacterial production; denaturing gradient gel electrophoresis. Article PeerReviewed 2007 ftunivtasmania https://doi.org/10.1111/j.1574-6941.2006.00262.x 2020-05-30T07:17:13Z Bacterial production in glacial runoff and aquatic habitats along a c. 500m transect from the ablation area of a Svalbard glacier (Midre Lov´enbreen, 791N, 121E) down to a series of proglacial lakes in its forefield were assessed. In addition, a series of in situ experiments were conducted to test how different nutrient sources (glacial flour and dissolved organic matter derived from goose faeces) and temperature affect bacterial abundance and production in these ecosystems. Bacterial abundance and production increased significantly along this transect and reached a maximum in the proglacial lakes. Bacterial diversity profiles as assessed by denaturing gradient gel electrophoresis indicated that communities in glacial runoff were different from those in proglacial lakes. Heterotrophic bacterial production was mainly controlled by temperature and phosphorus limitation. Addition of both glacial flour and dissolved organic matter derived from goose faeces stimulated bacterial production in those lakes. The results suggest that glacial runoff sustains an active bacterial community which is further stimulated in proglacial lakes by higher temperatures and nutrient inputs from bird faeces. Thus, as in maritime temperate and Antarctic settings, bacterial communities developing in the recently deglaciated terrain of Svalbard receive important inputs of nutrients via faunal transfers from adjacent ecosystems. Article in Journal/Newspaper Antarc* Antarctic Arctic Arctic glacier Svalbard University of Tasmania: UTas ePrints Arctic Antarctic Svalbard FEMS Microbiology Ecology 59 2 307 317 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
270300 Microbiology 260000 Earth Sciences high arctic glacier supraglacial melt water; proglacial lakes; bacterial production; denaturing gradient gel electrophoresis. |
spellingShingle |
270300 Microbiology 260000 Earth Sciences high arctic glacier supraglacial melt water; proglacial lakes; bacterial production; denaturing gradient gel electrophoresis. Mindl, B Anesio, AM Meirer, K Hodson, A Laybourn-Parry, J Sommaruga, R Sattler, B Factors infuencing bacterial dynamics along a transect from supraglacial runoff to proglacial lakes of a high Arctic glacieri |
topic_facet |
270300 Microbiology 260000 Earth Sciences high arctic glacier supraglacial melt water; proglacial lakes; bacterial production; denaturing gradient gel electrophoresis. |
description |
Bacterial production in glacial runoff and aquatic habitats along a c. 500m transect from the ablation area of a Svalbard glacier (Midre Lov´enbreen, 791N, 121E) down to a series of proglacial lakes in its forefield were assessed. In addition, a series of in situ experiments were conducted to test how different nutrient sources (glacial flour and dissolved organic matter derived from goose faeces) and temperature affect bacterial abundance and production in these ecosystems. Bacterial abundance and production increased significantly along this transect and reached a maximum in the proglacial lakes. Bacterial diversity profiles as assessed by denaturing gradient gel electrophoresis indicated that communities in glacial runoff were different from those in proglacial lakes. Heterotrophic bacterial production was mainly controlled by temperature and phosphorus limitation. Addition of both glacial flour and dissolved organic matter derived from goose faeces stimulated bacterial production in those lakes. The results suggest that glacial runoff sustains an active bacterial community which is further stimulated in proglacial lakes by higher temperatures and nutrient inputs from bird faeces. Thus, as in maritime temperate and Antarctic settings, bacterial communities developing in the recently deglaciated terrain of Svalbard receive important inputs of nutrients via faunal transfers from adjacent ecosystems. |
format |
Article in Journal/Newspaper |
author |
Mindl, B Anesio, AM Meirer, K Hodson, A Laybourn-Parry, J Sommaruga, R Sattler, B |
author_facet |
Mindl, B Anesio, AM Meirer, K Hodson, A Laybourn-Parry, J Sommaruga, R Sattler, B |
author_sort |
Mindl, B |
title |
Factors infuencing bacterial dynamics along a transect from supraglacial runoff to proglacial lakes of a high Arctic glacieri |
title_short |
Factors infuencing bacterial dynamics along a transect from supraglacial runoff to proglacial lakes of a high Arctic glacieri |
title_full |
Factors infuencing bacterial dynamics along a transect from supraglacial runoff to proglacial lakes of a high Arctic glacieri |
title_fullStr |
Factors infuencing bacterial dynamics along a transect from supraglacial runoff to proglacial lakes of a high Arctic glacieri |
title_full_unstemmed |
Factors infuencing bacterial dynamics along a transect from supraglacial runoff to proglacial lakes of a high Arctic glacieri |
title_sort |
factors infuencing bacterial dynamics along a transect from supraglacial runoff to proglacial lakes of a high arctic glacieri |
publishDate |
2007 |
url |
https://eprints.utas.edu.au/3460/ https://eprints.utas.edu.au/3460/1/MIndl__et__al.pdf https://doi.org/10.1111/j.1574-6941.2006.00262.x |
geographic |
Arctic Antarctic Svalbard |
geographic_facet |
Arctic Antarctic Svalbard |
genre |
Antarc* Antarctic Arctic Arctic glacier Svalbard |
genre_facet |
Antarc* Antarctic Arctic Arctic glacier Svalbard |
op_relation |
https://eprints.utas.edu.au/3460/1/MIndl__et__al.pdf Mindl, B, Anesio, AM, Meirer, K, Hodson, A, Laybourn-Parry, J, Sommaruga, R and Sattler, B 2007 , 'Factors infuencing bacterial dynamics along a transect from supraglacial runoff to proglacial lakes of a high Arctic glacieri' , FEMS Microbiology Ecology, vol. 59, no. 2 , pp. 307-317 , doi:10.1111/j.1574-6941.2006.00262.x <http://dx.doi.org/10.1111/j.1574-6941.2006.00262.x>. |
op_rights |
cc_utas |
op_doi |
https://doi.org/10.1111/j.1574-6941.2006.00262.x |
container_title |
FEMS Microbiology Ecology |
container_volume |
59 |
container_issue |
2 |
container_start_page |
307 |
op_container_end_page |
317 |
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1766083702522118144 |