Effect of temperature on the photosynthetic efficiency and morphotype of Phaeocystis antarctica
One of the only non-diatom species to dominate sea-ice assemblages is the haptophyte Phaeocystis antarctica .Here, the photosynthetic efficiency and morphotype expression of P. antarctica in response to freezing andmelting in an artificial sea-ice habitat is investigated. Maximum quantum yield of ph...
Published in: | Journal of Experimental Marine Biology and Ecology |
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Language: | English |
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Online Access: | https://doi.org/10.1016/j.jembe.2012.06.016 http://ecite.utas.edu.au/79229 |
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ftunivtasecite:oai:ecite.utas.edu.au:79229 2023-05-15T14:02:30+02:00 Effect of temperature on the photosynthetic efficiency and morphotype of Phaeocystis antarctica Kennedy, F McMinn, A Martin, A 2012 https://doi.org/10.1016/j.jembe.2012.06.016 http://ecite.utas.edu.au/79229 en eng Elsevier Science Bv http://dx.doi.org/10.1016/j.jembe.2012.06.016 http://purl.org/au-research/grants/arc/DP0880212 Kennedy, F and McMinn, A and Martin, A, Effect of temperature on the photosynthetic efficiency and morphotype of Phaeocystis antarctica , Journal of Experimental Marine Biology and Ecology, 429 pp. 7-14. ISSN 0022-0981 (2012) [Refereed Article] http://ecite.utas.edu.au/79229 Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Refereed Article PeerReviewed 2012 ftunivtasecite https://doi.org/10.1016/j.jembe.2012.06.016 2019-12-13T21:44:50Z One of the only non-diatom species to dominate sea-ice assemblages is the haptophyte Phaeocystis antarctica .Here, the photosynthetic efficiency and morphotype expression of P. antarctica in response to freezing andmelting in an artificial sea-ice habitat is investigated. Maximum quantum yield of photosystem II (Fv/Fm)was significantly different with respect to both light (light and dark, Two-way ANOVA, pb0.001) anddepth within the ice (Two-way ANOVA, pb0.001). There was a decline in maximum quantum yield (Fv/Fm) in cells at each level within the ice, but the decline was greater in the coldest part of the ice (i.e. closeto the surface) than at the ice/water interface. Following the initiation of a melt cycle, Fv/Fm increased inboth treatments, from 0.480.05 to 0.570.05 on day 10, and 0.380.06 to 0.440.07 on day 10, in thelight and dark treatments respectively. The ice matrix induced solitary cell formation while melting inducedcolony formation. This change in morphology is not thought to reflect either temperature or nutrients but thephysical presence of ice acting as a trigger for morphological change. This study utilised a novel ice tank technology to replicate sea-ice habitat and document the response of P.antarctica to freeze/thaw dynamics. Article in Journal/Newspaper Antarc* Antarctica Antarctica Journal Sea ice eCite UTAS (University of Tasmania) Journal of Experimental Marine Biology and Ecology 429 7 14 |
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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) Kennedy, F McMinn, A Martin, A Effect of temperature on the photosynthetic efficiency and morphotype of Phaeocystis antarctica |
topic_facet |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) |
description |
One of the only non-diatom species to dominate sea-ice assemblages is the haptophyte Phaeocystis antarctica .Here, the photosynthetic efficiency and morphotype expression of P. antarctica in response to freezing andmelting in an artificial sea-ice habitat is investigated. Maximum quantum yield of photosystem II (Fv/Fm)was significantly different with respect to both light (light and dark, Two-way ANOVA, pb0.001) anddepth within the ice (Two-way ANOVA, pb0.001). There was a decline in maximum quantum yield (Fv/Fm) in cells at each level within the ice, but the decline was greater in the coldest part of the ice (i.e. closeto the surface) than at the ice/water interface. Following the initiation of a melt cycle, Fv/Fm increased inboth treatments, from 0.480.05 to 0.570.05 on day 10, and 0.380.06 to 0.440.07 on day 10, in thelight and dark treatments respectively. The ice matrix induced solitary cell formation while melting inducedcolony formation. This change in morphology is not thought to reflect either temperature or nutrients but thephysical presence of ice acting as a trigger for morphological change. This study utilised a novel ice tank technology to replicate sea-ice habitat and document the response of P.antarctica to freeze/thaw dynamics. |
format |
Article in Journal/Newspaper |
author |
Kennedy, F McMinn, A Martin, A |
author_facet |
Kennedy, F McMinn, A Martin, A |
author_sort |
Kennedy, F |
title |
Effect of temperature on the photosynthetic efficiency and morphotype of Phaeocystis antarctica |
title_short |
Effect of temperature on the photosynthetic efficiency and morphotype of Phaeocystis antarctica |
title_full |
Effect of temperature on the photosynthetic efficiency and morphotype of Phaeocystis antarctica |
title_fullStr |
Effect of temperature on the photosynthetic efficiency and morphotype of Phaeocystis antarctica |
title_full_unstemmed |
Effect of temperature on the photosynthetic efficiency and morphotype of Phaeocystis antarctica |
title_sort |
effect of temperature on the photosynthetic efficiency and morphotype of phaeocystis antarctica |
publisher |
Elsevier Science Bv |
publishDate |
2012 |
url |
https://doi.org/10.1016/j.jembe.2012.06.016 http://ecite.utas.edu.au/79229 |
genre |
Antarc* Antarctica Antarctica Journal Sea ice |
genre_facet |
Antarc* Antarctica Antarctica Journal Sea ice |
op_relation |
http://dx.doi.org/10.1016/j.jembe.2012.06.016 http://purl.org/au-research/grants/arc/DP0880212 Kennedy, F and McMinn, A and Martin, A, Effect of temperature on the photosynthetic efficiency and morphotype of Phaeocystis antarctica , Journal of Experimental Marine Biology and Ecology, 429 pp. 7-14. ISSN 0022-0981 (2012) [Refereed Article] http://ecite.utas.edu.au/79229 |
op_doi |
https://doi.org/10.1016/j.jembe.2012.06.016 |
container_title |
Journal of Experimental Marine Biology and Ecology |
container_volume |
429 |
container_start_page |
7 |
op_container_end_page |
14 |
_version_ |
1766272804478517248 |