Phyllophora antarctica: Difference between revisions
Cwmhiraeth (talk | contribs) Adding biology |
Cwmhiraeth (talk | contribs) Adding ecology section |
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==Biology== |
==Biology== |
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In addition to [[chlorophyll a]], ''P. antarctica'' has other [[Photoreceptor protein|biliprotein]] pigments, namely [[Phycoerythrin|R-phycoerythrin]], [[phycocyanin]] and [[allophycocyanin]]. These pigments give the seaweed a greater ability to utilise blue light in the dim sub-ice environment. The phycoerythrin absorbs the blue light energy and then transfers it to the other biliproteins from where it is passed on to the [[photosynthetic reaction centre]], where it is turned into chemical energy.<ref name=Seckbach/> |
In addition to [[chlorophyll a]], ''P. antarctica'' has other [[Photoreceptor protein|biliprotein]] pigments, namely [[Phycoerythrin|R-phycoerythrin]], [[phycocyanin]] and [[allophycocyanin]]. These pigments give the seaweed a greater ability to utilise blue light in the dim sub-ice environment. The phycoerythrin absorbs the blue light energy and then transfers it to the other biliproteins from where it is passed on to the [[photosynthetic reaction centre]], where it is turned into chemical energy.<ref name=Seckbach/> |
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==Ecology== |
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''P. antarctica'' provides a large surface area on which epiphytic organisms can grow and it has a rich and diverse fauna. In some circumstances, particularly when the [[Sterechinus neumayeri|Antarctic sea urchin]] (''Sterechinus neumayeri'') is restricting the algal growth, the [[biomass]] of the epiphytes may exceed that of the algae. The species found attached or associated with the algae include the limpet ''[[Iothia coppingeri]]'', the amphipod ''[[Paramoera walkeri]]'', various [[polychaete]] worms and the Antarctic sea urchin.<ref name=Ferris>{{cite book|author1=Ferris, J.M.|author2=Burton, H.R.|author3=Johnstone, G.W.|author4=Bayly, I.A.E. |title=Biology of the Vestfold Hills, Antarctica: Proceedings of the symposium, Hobart, August 1984 |url=https://books.google.com/books?id=PoHtCAAAQBAJ&pg=PA146 |year=2012 |publisher=Springer Science & Business Media |isbn=978-94-009-3089-6 |pages=146–148}}</ref> |
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== References == |
== References == |
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Revision as of 19:44, 13 August 2017
| Phyllophora antarctica | |
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| Frozen sample of P. antarctica with serpulid worms | |
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| Species: | P. antarctica
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| Phyllophora antarctica A.Gepp & E.S.Gepp, 1905 [1]
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Phyllophora antarctica is a species of red alga in the family Phyllophoraceae. It is native to Antarctica where it grows in dim light on the underside of sea ice.[2]
Biology
In addition to chlorophyll a, P. antarctica has other biliprotein pigments, namely R-phycoerythrin, phycocyanin and allophycocyanin. These pigments give the seaweed a greater ability to utilise blue light in the dim sub-ice environment. The phycoerythrin absorbs the blue light energy and then transfers it to the other biliproteins from where it is passed on to the photosynthetic reaction centre, where it is turned into chemical energy.[2]
Ecology
P. antarctica provides a large surface area on which epiphytic organisms can grow and it has a rich and diverse fauna. In some circumstances, particularly when the Antarctic sea urchin (Sterechinus neumayeri) is restricting the algal growth, the biomass of the epiphytes may exceed that of the algae. The species found attached or associated with the algae include the limpet Iothia coppingeri, the amphipod Paramoera walkeri, various polychaete worms and the Antarctic sea urchin.[3]
References
- ^ Guiry, Michael D. (2015). "Phyllophora antarctica A.Gepp & E.S.Gepp, 1905". WoRMS. World Register of Marine Species. Retrieved 13 August 2017.
- ^ a b Seckbach; Joseph (2007). Algae and Cyanobacteria in Extreme Environments. Springer Science & Business Media. p. 88. ISBN 978-1-4020-6112-7.
{{cite book}}: CS1 maint: multiple names: authors list (link) - ^ Ferris, J.M.; Burton, H.R.; Johnstone, G.W.; Bayly, I.A.E. (2012). Biology of the Vestfold Hills, Antarctica: Proceedings of the symposium, Hobart, August 1984. Springer Science & Business Media. pp. 146–148. ISBN 978-94-009-3089-6.