Temporal patterns of primary production in a large ultra-oligotrophic Antarctic freshwater lake
A large ultra-oligotrophic Antarctic freshwater lake, Crooked Lake, was investigated between January 1993 and November 1993. The water column supported a small phytoplankton community limited by temperature, nutrient availability and, seasonally, by low photosynthetically active radiation. Chlorophy...
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1997
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Online Access: | http://nora.nerc.ac.uk/id/eprint/507808/ https://doi.org/10.1007/s003000050201 |
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ftnerc:oai:nora.nerc.ac.uk:507808 2023-05-15T13:48:08+02:00 Temporal patterns of primary production in a large ultra-oligotrophic Antarctic freshwater lake Bayliss, Peter Ellis-Evans, J. Cynan Laybourn-Parry, Johanna 1997-11 http://nora.nerc.ac.uk/id/eprint/507808/ https://doi.org/10.1007/s003000050201 unknown Springer-Verlag Bayliss, Peter; Ellis-Evans, J. Cynan; Laybourn-Parry, Johanna. 1997 Temporal patterns of primary production in a large ultra-oligotrophic Antarctic freshwater lake. Polar Biology, 18 (6). 363-370. https://doi.org/10.1007/s003000050201 <https://doi.org/10.1007/s003000050201> Publication - Article PeerReviewed 1997 ftnerc https://doi.org/10.1007/s003000050201 2023-02-04T19:40:00Z A large ultra-oligotrophic Antarctic freshwater lake, Crooked Lake, was investigated between January 1993 and November 1993. The water column supported a small phytoplankton community limited by temperature, nutrient availability and, seasonally, by low photosynthetically active radiation. Chlorophyll a concentrations were consistently low (<1 g l−1) and showed no obvious seasonal patterns. Production rates were low, ranging from non-detectable to 0.56 g C l−1 h−1, with highest rates generally occurring towards the end of the austral winter and in spring. The pattern of carbon fixation indicated that the phytoplankton was adapted to low light levels. Chlorophyll a specific photosynthetic rates (assimilation numbers) ranged from non-detectable to 1.27 gC (g chlorophyll a)−1 h−1. Partitioning of photosynthetic products revealed carbon incorporation principally into storage products such as lipids at high light fluxes with increasing protein synthesis at depth. With little allochthonous input the data suggest that lake dynamics in this Antarctic system are driven by phytoplankton activity. Article in Journal/Newspaper Antarc* Antarctic Polar Biology Natural Environment Research Council: NERC Open Research Archive Antarctic Austral Crooked Lake ENVELOPE(78.382,78.382,-68.617,-68.617) Polar Biology 18 6 363 370 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
A large ultra-oligotrophic Antarctic freshwater lake, Crooked Lake, was investigated between January 1993 and November 1993. The water column supported a small phytoplankton community limited by temperature, nutrient availability and, seasonally, by low photosynthetically active radiation. Chlorophyll a concentrations were consistently low (<1 g l−1) and showed no obvious seasonal patterns. Production rates were low, ranging from non-detectable to 0.56 g C l−1 h−1, with highest rates generally occurring towards the end of the austral winter and in spring. The pattern of carbon fixation indicated that the phytoplankton was adapted to low light levels. Chlorophyll a specific photosynthetic rates (assimilation numbers) ranged from non-detectable to 1.27 gC (g chlorophyll a)−1 h−1. Partitioning of photosynthetic products revealed carbon incorporation principally into storage products such as lipids at high light fluxes with increasing protein synthesis at depth. With little allochthonous input the data suggest that lake dynamics in this Antarctic system are driven by phytoplankton activity. |
format |
Article in Journal/Newspaper |
author |
Bayliss, Peter Ellis-Evans, J. Cynan Laybourn-Parry, Johanna |
spellingShingle |
Bayliss, Peter Ellis-Evans, J. Cynan Laybourn-Parry, Johanna Temporal patterns of primary production in a large ultra-oligotrophic Antarctic freshwater lake |
author_facet |
Bayliss, Peter Ellis-Evans, J. Cynan Laybourn-Parry, Johanna |
author_sort |
Bayliss, Peter |
title |
Temporal patterns of primary production in a large ultra-oligotrophic Antarctic freshwater lake |
title_short |
Temporal patterns of primary production in a large ultra-oligotrophic Antarctic freshwater lake |
title_full |
Temporal patterns of primary production in a large ultra-oligotrophic Antarctic freshwater lake |
title_fullStr |
Temporal patterns of primary production in a large ultra-oligotrophic Antarctic freshwater lake |
title_full_unstemmed |
Temporal patterns of primary production in a large ultra-oligotrophic Antarctic freshwater lake |
title_sort |
temporal patterns of primary production in a large ultra-oligotrophic antarctic freshwater lake |
publisher |
Springer-Verlag |
publishDate |
1997 |
url |
http://nora.nerc.ac.uk/id/eprint/507808/ https://doi.org/10.1007/s003000050201 |
long_lat |
ENVELOPE(78.382,78.382,-68.617,-68.617) |
geographic |
Antarctic Austral Crooked Lake |
geographic_facet |
Antarctic Austral Crooked Lake |
genre |
Antarc* Antarctic Polar Biology |
genre_facet |
Antarc* Antarctic Polar Biology |
op_relation |
Bayliss, Peter; Ellis-Evans, J. Cynan; Laybourn-Parry, Johanna. 1997 Temporal patterns of primary production in a large ultra-oligotrophic Antarctic freshwater lake. Polar Biology, 18 (6). 363-370. https://doi.org/10.1007/s003000050201 <https://doi.org/10.1007/s003000050201> |
op_doi |
https://doi.org/10.1007/s003000050201 |
container_title |
Polar Biology |
container_volume |
18 |
container_issue |
6 |
container_start_page |
363 |
op_container_end_page |
370 |
_version_ |
1766248765137616896 |