Heterotrophic bacterial and viral dynamics in Arctic freshwaters: results from a field study and nutrient-temperature manipulation experiments
Heterotrophic bacterial and viral concentrations (range, 0.7 104 to 206.2 104ml-1 and 0.05 106 to 128.9 106ml-1, respectively) were determined in several Arctic freshwater environments, including lakes and glacial ecosystems (78.55N, 11.56E). Our bacteria and virus results mirrored trends seen in te...
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ftunivtasecite:oai:ecite.utas.edu.au:48995 2023-05-15T14:25:53+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 Graneli, W Anesio, AM 2007 https://doi.org/10.1007/s00300-007-0301-3 http://ecite.utas.edu.au/48995 en eng Springer http://dx.doi.org/10.1007/s00300-007-0301-3 Sawstrom, C and Laybourn-Parry, J and Graneli, W and Anesio, AM, Heterotrophic bacterial and viral dynamics in Arctic freshwaters: results from a field study and nutrient-temperature manipulation experiments, Polar Biology, 30, (11) pp. 1407-1415. ISSN 0722-4060 (2007) [Refereed Article] http://ecite.utas.edu.au/48995 Biological Sciences Microbiology Microbial Ecology Refereed Article PeerReviewed 2007 ftunivtasecite https://doi.org/10.1007/s00300-007-0301-3 2019-12-13T21:23:45Z Heterotrophic bacterial and viral concentrations (range, 0.7 104 to 206.2 104ml-1 and 0.05 106 to 128.9 106ml-1, respectively) were determined in several Arctic freshwater environments, including lakes and glacial ecosystems (78.55N, 11.56E). 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. 2007 Springer-Verlag. Article in Journal/Newspaper Arctic Arctic Polar Biology eCite UTAS (University of Tasmania) Arctic Polar Biology 30 11 1407 1415 |
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Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Biological Sciences Microbiology Microbial Ecology |
spellingShingle |
Biological Sciences Microbiology Microbial Ecology Sawstrom, C Laybourn-Parry, J Graneli, W Anesio, AM Heterotrophic bacterial and viral dynamics in Arctic freshwaters: results from a field study and nutrient-temperature manipulation experiments |
topic_facet |
Biological Sciences Microbiology Microbial Ecology |
description |
Heterotrophic bacterial and viral concentrations (range, 0.7 104 to 206.2 104ml-1 and 0.05 106 to 128.9 106ml-1, respectively) were determined in several Arctic freshwater environments, including lakes and glacial ecosystems (78.55N, 11.56E). 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. 2007 Springer-Verlag. |
format |
Article in Journal/Newspaper |
author |
Sawstrom, C Laybourn-Parry, J Graneli, W Anesio, AM |
author_facet |
Sawstrom, C Laybourn-Parry, J Graneli, W Anesio, AM |
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://doi.org/10.1007/s00300-007-0301-3 http://ecite.utas.edu.au/48995 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Polar Biology |
genre_facet |
Arctic Arctic Polar Biology |
op_relation |
http://dx.doi.org/10.1007/s00300-007-0301-3 Sawstrom, C and Laybourn-Parry, J and Graneli, W and Anesio, AM, Heterotrophic bacterial and viral dynamics in Arctic freshwaters: results from a field study and nutrient-temperature manipulation experiments, Polar Biology, 30, (11) pp. 1407-1415. ISSN 0722-4060 (2007) [Refereed Article] http://ecite.utas.edu.au/48995 |
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 |
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1766298365768761344 |