Acclimation of Antarctic bottom-ice algal communities to lowered salinities during melting

Ryan, KG; Ralph, P; McMinn, A

Acclimation of Antarctic bottom-ice algal communities to lowered salinities during melting

Ryan, KG Ralph, P

McMinn, A

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Publication Type:: Journal Article
Citation:: Polar Biology, 2004, 27 (11), pp. 679 - 686
Issue Date:: 2004-10-01

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Field	Value	Language
dc.contributor.author	Ryan, KG	en_US
dc.contributor.author	Ralph, P https://orcid.org/0000-0002-3103-7346	en_US
dc.contributor.author	McMinn, A	en_US
dc.date.issued	2004-10-01	en_US
dc.identifier.citation	Polar Biology, 2004, 27 (11), pp. 679 - 686	en_US
dc.identifier.issn	0722-4060	en_US
dc.identifier.uri	http://hdl.handle.net/10453/3707
dc.description.abstract	Sea-ice brine algal communities were exposed to salinities between 30 and 10‰ during melting. There was a progressive decline in maximum quantum yield, relative electron transfer rate (rETRmax) and photosynthetic efficiency (α) with decreasing salinity of the final melted sample. While all species showed a drop in these parameters, Fragilariopsis curta and Entomoneis kjellmannii showed the least inhibition. There was a steady increase in rETRmax and alpha; over 5 days after melting, especially in the samples melted into the highest salinities. In addition, the samples melted from the ice without added filtered seawater showed no photosynthetic activity after 2 days. Our results suggest that for experimental work using sea-ice microalgae, the final salinity of the melted sample should be greater than 28‰ (i.e. the ratio of sea ice to filtered seawater should be at least 1:2). © Springer-Verlag 2004.	en_US
dc.relation.ispartof	Polar Biology	en_US
dc.relation.isbasedon	10.1007/s00300-004-0636-y	en_US
dc.subject.classification	Marine Biology & Hydrobiology	en_US
dc.title	Acclimation of Antarctic bottom-ice algal communities to lowered salinities during melting	en_US
dc.type	Journal Article
utslib.citation.volume	11	en_US
utslib.citation.volume	27	en_US
utslib.for	0607 Plant Biology	en_US
utslib.for	06 Biological Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - C3 - Climate Change Cluster
utslib.copyright.status	closed_access
pubs.issue	11	en_US
pubs.publication-status	Published	en_US
pubs.volume	27	en_US

Abstract:

Sea-ice brine algal communities were exposed to salinities between 30 and 10‰ during melting. There was a progressive decline in maximum quantum yield, relative electron transfer rate (rETRmax) and photosynthetic efficiency (α) with decreasing salinity of the final melted sample. While all species showed a drop in these parameters, Fragilariopsis curta and Entomoneis kjellmannii showed the least inhibition. There was a steady increase in rETRmax and alpha; over 5 days after melting, especially in the samples melted into the highest salinities. In addition, the samples melted from the ice without added filtered seawater showed no photosynthetic activity after 2 days. Our results suggest that for experimental work using sea-ice microalgae, the final salinity of the melted sample should be greater than 28‰ (i.e. the ratio of sea ice to filtered seawater should be at least 1:2). © Springer-Verlag 2004.

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http://hdl.handle.net/10453/3707