Heterotrophic bacterial and viral dynamics in Arctic freshwaters: results from a field study and nutrient-temperature manipulation experiments
Heterotrophic bacterial and viral concentrations (range, 0.7 x 10(4) to 206.2 x 10(4) ml(-1) and 0.05 x 10(6) to 128.9 x 10(6) ml(-1), respectively) were determined in several Arctic freshwater environments, including lakes and glacial ecosystems (78.55 degrees N, 11.56 degrees E). Our bacteria and...
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Language: | English |
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Online Access: | https://lup.lub.lu.se/record/656981 https://doi.org/10.1007/s00300-007-0301-3 |
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ftulundlup:oai:lup.lub.lu.se:2cac68b0-75a3-4d2e-89eb-9e65768db022 2023-05-15T14:41:59+02:00 Heterotrophic bacterial and viral dynamics in Arctic freshwaters: results from a field study and nutrient-temperature manipulation experiments Sawstrom, C. Laybourn-Parry, J. Granéli, Wilhelm Anesio, A. M. 2007 https://lup.lub.lu.se/record/656981 https://doi.org/10.1007/s00300-007-0301-3 eng eng Springer https://lup.lub.lu.se/record/656981 http://dx.doi.org/10.1007/s00300-007-0301-3 wos:000249306800005 scopus:34548527602 Polar Biology; 30(11), pp 1407-1415 (2007) ISSN: 1432-2056 Ecology viruses bacteria temperature Arctic nutrients contributiontojournal/article info:eu-repo/semantics/article text 2007 ftulundlup https://doi.org/10.1007/s00300-007-0301-3 2023-02-01T23:28:48Z Heterotrophic bacterial and viral concentrations (range, 0.7 x 10(4) to 206.2 x 10(4) ml(-1) and 0.05 x 10(6) to 128.9 x 10(6) ml(-1), respectively) were determined in several Arctic freshwater environments, including lakes and glacial ecosystems (78.55 degrees N, 11.56 degrees E). Our bacteria and virus results mirrored trends seen in temperate lakes, with an average virus-to-bacteria ratio (VBR) of 13 (range, 7.3-25.2) and viral concentrations and DOC positively correlated with bacterial concentrations (R = 0.964, P < 0.01 and R = 0.813, P < 0.05, respectively). Lysogenic bacteria, determined by induction with Mitomycin C, were not detected in any of the investigated Arctic freshwater environments. Nutrient-addition experiments at in situ and at elevated temperatures were performed to elucidate the factors which influenced the bacterial growth and the virus-bacteria interactions in Arctic freshwaters. Our results suggest that multiple limiting factors interacted and constrained bacterial growth. Bacterial concentrations and doubling times increased at elevated temperatures and appeared to be co-stimulated by phosphorus and carbon. However, viral concentrations showed a lack of response to nutrient addition thus indicating an uncoupling between bacteria and viruses in the experiment. Article in Journal/Newspaper Arctic Polar Biology Lund University Publications (LUP) Arctic Polar Biology 30 11 1407 1415 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Ecology viruses bacteria temperature Arctic nutrients |
spellingShingle |
Ecology viruses bacteria temperature Arctic nutrients Sawstrom, C. Laybourn-Parry, J. Granéli, Wilhelm Anesio, A. M. Heterotrophic bacterial and viral dynamics in Arctic freshwaters: results from a field study and nutrient-temperature manipulation experiments |
topic_facet |
Ecology viruses bacteria temperature Arctic nutrients |
description |
Heterotrophic bacterial and viral concentrations (range, 0.7 x 10(4) to 206.2 x 10(4) ml(-1) and 0.05 x 10(6) to 128.9 x 10(6) ml(-1), respectively) were determined in several Arctic freshwater environments, including lakes and glacial ecosystems (78.55 degrees N, 11.56 degrees E). Our bacteria and virus results mirrored trends seen in temperate lakes, with an average virus-to-bacteria ratio (VBR) of 13 (range, 7.3-25.2) and viral concentrations and DOC positively correlated with bacterial concentrations (R = 0.964, P < 0.01 and R = 0.813, P < 0.05, respectively). Lysogenic bacteria, determined by induction with Mitomycin C, were not detected in any of the investigated Arctic freshwater environments. Nutrient-addition experiments at in situ and at elevated temperatures were performed to elucidate the factors which influenced the bacterial growth and the virus-bacteria interactions in Arctic freshwaters. Our results suggest that multiple limiting factors interacted and constrained bacterial growth. Bacterial concentrations and doubling times increased at elevated temperatures and appeared to be co-stimulated by phosphorus and carbon. However, viral concentrations showed a lack of response to nutrient addition thus indicating an uncoupling between bacteria and viruses in the experiment. |
format |
Article in Journal/Newspaper |
author |
Sawstrom, C. Laybourn-Parry, J. Granéli, Wilhelm Anesio, A. M. |
author_facet |
Sawstrom, C. Laybourn-Parry, J. Granéli, Wilhelm Anesio, A. M. |
author_sort |
Sawstrom, C. |
title |
Heterotrophic bacterial and viral dynamics in Arctic freshwaters: results from a field study and nutrient-temperature manipulation experiments |
title_short |
Heterotrophic bacterial and viral dynamics in Arctic freshwaters: results from a field study and nutrient-temperature manipulation experiments |
title_full |
Heterotrophic bacterial and viral dynamics in Arctic freshwaters: results from a field study and nutrient-temperature manipulation experiments |
title_fullStr |
Heterotrophic bacterial and viral dynamics in Arctic freshwaters: results from a field study and nutrient-temperature manipulation experiments |
title_full_unstemmed |
Heterotrophic bacterial and viral dynamics in Arctic freshwaters: results from a field study and nutrient-temperature manipulation experiments |
title_sort |
heterotrophic bacterial and viral dynamics in arctic freshwaters: results from a field study and nutrient-temperature manipulation experiments |
publisher |
Springer |
publishDate |
2007 |
url |
https://lup.lub.lu.se/record/656981 https://doi.org/10.1007/s00300-007-0301-3 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Polar Biology |
genre_facet |
Arctic Polar Biology |
op_source |
Polar Biology; 30(11), pp 1407-1415 (2007) ISSN: 1432-2056 |
op_relation |
https://lup.lub.lu.se/record/656981 http://dx.doi.org/10.1007/s00300-007-0301-3 wos:000249306800005 scopus:34548527602 |
op_doi |
https://doi.org/10.1007/s00300-007-0301-3 |
container_title |
Polar Biology |
container_volume |
30 |
container_issue |
11 |
container_start_page |
1407 |
op_container_end_page |
1415 |
_version_ |
1766313665994162176 |