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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ftunivtasecite:oai:ecite.utas.edu.au:49004 2023-05-15T13:40:51+02:00 Temporal patterns of primary production in a large ultra-oligotrophic Antarctic freshwater lake Bayliss, P Ellis-Evans, JC Laybourn-Parry, J 1997 https://doi.org/10.1007/s003000050201 http://ecite.utas.edu.au/49004 en eng Springer http://dx.doi.org/10.1007/s003000050201 Bayliss, P and Ellis-Evans, JC and Laybourn-Parry, J, Temporal patterns of primary production in a large ultra-oligotrophic Antarctic freshwater lake, Polar Biology, 18, (6) pp. 363-370. ISSN 0722-4060 (1997) [Refereed Article] http://ecite.utas.edu.au/49004 Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Refereed Article PeerReviewed 1997 ftunivtasecite https://doi.org/10.1007/s003000050201 2019-12-13T21:23:45Z 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 eCite UTAS (University of Tasmania) Antarctic Austral Crooked Lake ENVELOPE(78.382,78.382,-68.617,-68.617) Polar Biology 18 6 363 370 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) |
spellingShingle |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Bayliss, P Ellis-Evans, JC Laybourn-Parry, J Temporal patterns of primary production in a large ultra-oligotrophic Antarctic freshwater lake |
topic_facet |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) |
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, P Ellis-Evans, JC Laybourn-Parry, J |
author_facet |
Bayliss, P Ellis-Evans, JC Laybourn-Parry, J |
author_sort |
Bayliss, P |
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 |
publishDate |
1997 |
url |
https://doi.org/10.1007/s003000050201 http://ecite.utas.edu.au/49004 |
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 |
http://dx.doi.org/10.1007/s003000050201 Bayliss, P and Ellis-Evans, JC and Laybourn-Parry, J, Temporal patterns of primary production in a large ultra-oligotrophic Antarctic freshwater lake, Polar Biology, 18, (6) pp. 363-370. ISSN 0722-4060 (1997) [Refereed Article] http://ecite.utas.edu.au/49004 |
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_ |
1766141319800946688 |