The effects of UV-B radiation on the nutritional composition of Antarctic phytoplankton
Progress Code: completed Statement: Values provided in temporal and spatial coverage are approximate only. The actual piece of equipment used was an International Light IL 1700Radiometer equipped with broad band detectors to measure PAR, UV-A and erythemal UV-B. The effects of UV-B radiation on the...
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Australian Ocean Data Network
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Online Access: | https://researchdata.edu.au/the-effects-uv-antarctic-phytoplankton/2820210 |
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ftands:oai:ands.org.au::2820210 2023-12-03T10:14:07+01:00 The effects of UV-B radiation on the nutritional composition of Antarctic phytoplankton Spatial: westlimit=62; southlimit=-70.0; eastlimit=159; northlimit=-54.0 Temporal: From 1995-09-30 to 1996-03-31 https://researchdata.edu.au/the-effects-uv-antarctic-phytoplankton/2820210 unknown Australian Ocean Data Network https://researchdata.edu.au/the-effects-uv-antarctic-phytoplankton/2820210 ASAC_872 AU/AADC > Australian Antarctic Data Centre, Australia biota climatologyMeteorologyAtmosphere geoscientificInformation oceans EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > ULTRAVIOLET RADIATION OCEANS > OCEAN CHEMISTRY > ORGANIC CARBON BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON MARINE ECOSYSTEMS > COASTAL ALGAE ANTARCTIC CHAEOTOCEROS DIATOMS ESSENTIAL FATTY ACIDS FATTY ACID LIPID ODONTELLA PAR PHAEOCYSTIS UV-B Radiometers AMD/AU CEOS AMD CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA ANTARCTICA GEOGRAPHIC REGION > POLAR dataset ftands 2023-11-06T23:51:20Z Progress Code: completed Statement: Values provided in temporal and spatial coverage are approximate only. The actual piece of equipment used was an International Light IL 1700Radiometer equipped with broad band detectors to measure PAR, UV-A and erythemal UV-B. The effects of UV-B radiation on the fatty acid, total lipid and sterol composition and content of three Antarctic marine phytoplankton were examined in a preliminary culture experiment. Exponential growth phase cultures of the diatoms Odontella weissflogii and Chaetoceros simplex and the Haptophyte Phaeocystis antarctica were grown at 2 (plus or minus 1)degrees C and exposed to 16.3 (plus or minus 0.7) W.m-2 photosynthetically active radiation (PAR). UV-irradiated treatments were exposed to constant UV-A (4.39 (plus or minus 0.20) W.m-2) and low (0.37 W.m-2) or high UV-B (1.59 W.m-2). UV-B treatments induced species specific changes in lipid content and composition. The sterol, fatty acid and total lipid content and profiles for O. weissflogii changed little under low UV-B when compared with control conditions (PAR alone), but showed a decrease in the lipid content per cell under high UV-B treatment. In contrast, when P. antarctica was exposed to low UV-B irradiance, storage lipids were reduced and structural lipids increased indicating that low UV-B enhanced cell growth and metabolism. P. antarctica also contained a higher proportion of polyunsaturated fatty acids under low UV-B in comparison with PAR irradiated control cultures. The flagellate life stage of P. antarctica died under high UV-B irradiation. However, exposure of P. antarctica to high UV-B irradiance increased total lipid, triglyceride and free fat. The effect of UV-B irradiances on the lipid content of Antarctic marine phytoplankton is species specific. Changes in ambient UV-B may alter the nutritional quality of food available to higher trophic levels. EXPERIMENTAL All measurements of irradiance were made with an International Light IL 1700 Radiometer equipped with broad band ... Dataset Antarc* Antarctic Antarctica Research Data Australia (Australian National Data Service - ANDS) Antarctic New Zealand |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota climatologyMeteorologyAtmosphere geoscientificInformation oceans EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > ULTRAVIOLET RADIATION OCEANS > OCEAN CHEMISTRY > ORGANIC CARBON BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON MARINE ECOSYSTEMS > COASTAL ALGAE ANTARCTIC CHAEOTOCEROS DIATOMS ESSENTIAL FATTY ACIDS FATTY ACID LIPID ODONTELLA PAR PHAEOCYSTIS UV-B Radiometers AMD/AU CEOS AMD CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA ANTARCTICA GEOGRAPHIC REGION > POLAR |
spellingShingle |
biota climatologyMeteorologyAtmosphere geoscientificInformation oceans EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > ULTRAVIOLET RADIATION OCEANS > OCEAN CHEMISTRY > ORGANIC CARBON BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON MARINE ECOSYSTEMS > COASTAL ALGAE ANTARCTIC CHAEOTOCEROS DIATOMS ESSENTIAL FATTY ACIDS FATTY ACID LIPID ODONTELLA PAR PHAEOCYSTIS UV-B Radiometers AMD/AU CEOS AMD CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA ANTARCTICA GEOGRAPHIC REGION > POLAR The effects of UV-B radiation on the nutritional composition of Antarctic phytoplankton |
topic_facet |
biota climatologyMeteorologyAtmosphere geoscientificInformation oceans EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > ULTRAVIOLET RADIATION OCEANS > OCEAN CHEMISTRY > ORGANIC CARBON BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON MARINE ECOSYSTEMS > COASTAL ALGAE ANTARCTIC CHAEOTOCEROS DIATOMS ESSENTIAL FATTY ACIDS FATTY ACID LIPID ODONTELLA PAR PHAEOCYSTIS UV-B Radiometers AMD/AU CEOS AMD CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA ANTARCTICA GEOGRAPHIC REGION > POLAR |
description |
Progress Code: completed Statement: Values provided in temporal and spatial coverage are approximate only. The actual piece of equipment used was an International Light IL 1700Radiometer equipped with broad band detectors to measure PAR, UV-A and erythemal UV-B. The effects of UV-B radiation on the fatty acid, total lipid and sterol composition and content of three Antarctic marine phytoplankton were examined in a preliminary culture experiment. Exponential growth phase cultures of the diatoms Odontella weissflogii and Chaetoceros simplex and the Haptophyte Phaeocystis antarctica were grown at 2 (plus or minus 1)degrees C and exposed to 16.3 (plus or minus 0.7) W.m-2 photosynthetically active radiation (PAR). UV-irradiated treatments were exposed to constant UV-A (4.39 (plus or minus 0.20) W.m-2) and low (0.37 W.m-2) or high UV-B (1.59 W.m-2). UV-B treatments induced species specific changes in lipid content and composition. The sterol, fatty acid and total lipid content and profiles for O. weissflogii changed little under low UV-B when compared with control conditions (PAR alone), but showed a decrease in the lipid content per cell under high UV-B treatment. In contrast, when P. antarctica was exposed to low UV-B irradiance, storage lipids were reduced and structural lipids increased indicating that low UV-B enhanced cell growth and metabolism. P. antarctica also contained a higher proportion of polyunsaturated fatty acids under low UV-B in comparison with PAR irradiated control cultures. The flagellate life stage of P. antarctica died under high UV-B irradiation. However, exposure of P. antarctica to high UV-B irradiance increased total lipid, triglyceride and free fat. The effect of UV-B irradiances on the lipid content of Antarctic marine phytoplankton is species specific. Changes in ambient UV-B may alter the nutritional quality of food available to higher trophic levels. EXPERIMENTAL All measurements of irradiance were made with an International Light IL 1700 Radiometer equipped with broad band ... |
format |
Dataset |
title |
The effects of UV-B radiation on the nutritional composition of Antarctic phytoplankton |
title_short |
The effects of UV-B radiation on the nutritional composition of Antarctic phytoplankton |
title_full |
The effects of UV-B radiation on the nutritional composition of Antarctic phytoplankton |
title_fullStr |
The effects of UV-B radiation on the nutritional composition of Antarctic phytoplankton |
title_full_unstemmed |
The effects of UV-B radiation on the nutritional composition of Antarctic phytoplankton |
title_sort |
effects of uv-b radiation on the nutritional composition of antarctic phytoplankton |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.edu.au/the-effects-uv-antarctic-phytoplankton/2820210 |
op_coverage |
Spatial: westlimit=62; southlimit=-70.0; eastlimit=159; northlimit=-54.0 Temporal: From 1995-09-30 to 1996-03-31 |
geographic |
Antarctic New Zealand |
geographic_facet |
Antarctic New Zealand |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
AU/AADC > Australian Antarctic Data Centre, Australia |
op_relation |
https://researchdata.edu.au/the-effects-uv-antarctic-phytoplankton/2820210 ASAC_872 |
_version_ |
1784261211880161280 |