Bacterioplankton production in freshwater Antarctic lakes
1. Bacterioplankton production was measured in the water columns of two ultraoligotrophic,freshwater Antarctic lakes (Crooked Lake and Lake Druzhby) during an annualcycle. In both lakes bacterial production, measured by the incorporation of [3H] thymidine,continued in winter and showed a cycle over...
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ftunivtasecite:oai:ecite.utas.edu.au:49066 2023-05-15T13:40:51+02:00 Bacterioplankton production in freshwater Antarctic lakes Laybourn-Parry, J Henshaw, T Jones, DJ Quayle, W 2004 application/pdf http://interscience.wiley.com https://doi.org/10.1111/j.1365-2427.2004.01221.x http://ecite.utas.edu.au/49066 en eng Blackwell Publishing Ltd http://ecite.utas.edu.au/49066/1/FWB bacteriopalnkton PDF.pdf http://dx.doi.org/10.1111/j.1365-2427.2004.01221.x Laybourn-Parry, J and Henshaw, T and Jones, DJ and Quayle, W, Bacterioplankton production in freshwater Antarctic lakes, Freshwater Biology, 49, (6) pp. 735-745. ISSN 0046-5070 (2004) [Refereed Article] http://ecite.utas.edu.au/49066 Biological Sciences Microbiology Microbial Ecology Refereed Article PeerReviewed 2004 ftunivtasecite https://doi.org/10.1111/j.1365-2427.2004.01221.x 2019-12-13T21:23:45Z 1. Bacterioplankton production was measured in the water columns of two ultraoligotrophic,freshwater Antarctic lakes (Crooked Lake and Lake Druzhby) during an annualcycle. In both lakes bacterial production, measured by the incorporation of [3H] thymidine,continued in winter and showed a cycle over the year. The range of production was between 0and 479 ng C L)1 h)1 in Crooked Lake and 0354 ng L)1 h)1 in Lake Druzhby.2. Abundance and mean cell volume both varied, producing marked changes in biomassduring the year, with highest biomass occurring in the winter and early spring. Biomassshowed similar seasonal trends in both lakes.3. For most of the year inorganic forms of nitrogen and phosphorus were detectable in thewater columns of the lakes and were unlikely to have limited bacterial production.Dissolved organic carbon (DOC) was below 3000 lg L)1. Dissolved amino acids andcarbohydrates contributed 525% of the DOC pool in Crooked Lake and 564% in LakeDruzhby. Dissolved carbohydrates were consistently low, suggesting that this may havebeen the preferred carbon substrate for bacterioplankton.4. Aggregate associated bacteria had higher mean cell volume, abundances and productionthan freely suspended bacteria in Lake Druzhby, while in Crooked Lake aggregateassociated bacteria consistently had higher mean cell volumes than free bacteria, butabundance and production were on occasion higher in free bacteria compared withaggregate associated communities.5. The data indicated that production is limited by continuous low temperatures and thelimited availability of suitable DOC substrate. However, the bacterioplankton functionsyear round, responding to factors other than temperature. Article in Journal/Newspaper Antarc* Antarctic eCite UTAS (University of Tasmania) Antarctic Crooked Lake ENVELOPE(78.382,78.382,-68.617,-68.617) Lake Druzhby ENVELOPE(78.314,78.314,-68.593,-68.593) Freshwater Biology 49 6 735 744 |
institution |
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 Laybourn-Parry, J Henshaw, T Jones, DJ Quayle, W Bacterioplankton production in freshwater Antarctic lakes |
topic_facet |
Biological Sciences Microbiology Microbial Ecology |
description |
1. Bacterioplankton production was measured in the water columns of two ultraoligotrophic,freshwater Antarctic lakes (Crooked Lake and Lake Druzhby) during an annualcycle. In both lakes bacterial production, measured by the incorporation of [3H] thymidine,continued in winter and showed a cycle over the year. The range of production was between 0and 479 ng C L)1 h)1 in Crooked Lake and 0354 ng L)1 h)1 in Lake Druzhby.2. Abundance and mean cell volume both varied, producing marked changes in biomassduring the year, with highest biomass occurring in the winter and early spring. Biomassshowed similar seasonal trends in both lakes.3. For most of the year inorganic forms of nitrogen and phosphorus were detectable in thewater columns of the lakes and were unlikely to have limited bacterial production.Dissolved organic carbon (DOC) was below 3000 lg L)1. Dissolved amino acids andcarbohydrates contributed 525% of the DOC pool in Crooked Lake and 564% in LakeDruzhby. Dissolved carbohydrates were consistently low, suggesting that this may havebeen the preferred carbon substrate for bacterioplankton.4. Aggregate associated bacteria had higher mean cell volume, abundances and productionthan freely suspended bacteria in Lake Druzhby, while in Crooked Lake aggregateassociated bacteria consistently had higher mean cell volumes than free bacteria, butabundance and production were on occasion higher in free bacteria compared withaggregate associated communities.5. The data indicated that production is limited by continuous low temperatures and thelimited availability of suitable DOC substrate. However, the bacterioplankton functionsyear round, responding to factors other than temperature. |
format |
Article in Journal/Newspaper |
author |
Laybourn-Parry, J Henshaw, T Jones, DJ Quayle, W |
author_facet |
Laybourn-Parry, J Henshaw, T Jones, DJ Quayle, W |
author_sort |
Laybourn-Parry, J |
title |
Bacterioplankton production in freshwater Antarctic lakes |
title_short |
Bacterioplankton production in freshwater Antarctic lakes |
title_full |
Bacterioplankton production in freshwater Antarctic lakes |
title_fullStr |
Bacterioplankton production in freshwater Antarctic lakes |
title_full_unstemmed |
Bacterioplankton production in freshwater Antarctic lakes |
title_sort |
bacterioplankton production in freshwater antarctic lakes |
publisher |
Blackwell Publishing Ltd |
publishDate |
2004 |
url |
http://interscience.wiley.com https://doi.org/10.1111/j.1365-2427.2004.01221.x http://ecite.utas.edu.au/49066 |
long_lat |
ENVELOPE(78.382,78.382,-68.617,-68.617) ENVELOPE(78.314,78.314,-68.593,-68.593) |
geographic |
Antarctic Crooked Lake Lake Druzhby |
geographic_facet |
Antarctic Crooked Lake Lake Druzhby |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
http://ecite.utas.edu.au/49066/1/FWB bacteriopalnkton PDF.pdf http://dx.doi.org/10.1111/j.1365-2427.2004.01221.x Laybourn-Parry, J and Henshaw, T and Jones, DJ and Quayle, W, Bacterioplankton production in freshwater Antarctic lakes, Freshwater Biology, 49, (6) pp. 735-745. ISSN 0046-5070 (2004) [Refereed Article] http://ecite.utas.edu.au/49066 |
op_doi |
https://doi.org/10.1111/j.1365-2427.2004.01221.x |
container_title |
Freshwater Biology |
container_volume |
49 |
container_issue |
6 |
container_start_page |
735 |
op_container_end_page |
744 |
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1766141349860474880 |