Photoacclimation in Antarctic bottom ice algae: an experimental approach
The aim of the study was to investigate the capacity of microalgae from the extremely low light habitat of bottom ice to acclimate to different light conditions. During austral spring 1997 the bottom layer of land-fast ice in Terra Nova Bay displayed high values of microalgal biomass up to 2,400 lg...
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2009
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ftunivnapoliiris:oai:www.iris.unina.it:11588/362531 2024-04-14T08:04:11+00:00 Photoacclimation in Antarctic bottom ice algae: an experimental approach MANGONI, OLGA G. C. CARRADA M. MODIGH G. CATALANO V. SAGGIOMO Mangoni, Olga G. C., Carrada M., Modigh G., Catalano V., Saggiomo 2009 STAMPA http://hdl.handle.net/11588/362531 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000263389000002 volume:32 firstpage:325 lastpage:335 numberofpages:11 journal:POLAR BIOLOGY http://hdl.handle.net/11588/362531 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-60449100819 info:eu-repo/semantics/closedAccess HPLC pigment Ross Sea info:eu-repo/semantics/article 2009 ftunivnapoliiris 2024-03-21T19:02:31Z The aim of the study was to investigate the capacity of microalgae from the extremely low light habitat of bottom ice to acclimate to different light conditions. During austral spring 1997 the bottom layer of land-fast ice in Terra Nova Bay displayed high values of microalgal biomass up to 2,400 lg Chla L-1 concentrated in a few centimetres ice layer. The algal assemblage was dominated by benthic pennate diatoms. Photoacclimation of the microalgae was addressed in terms of pigment spectra and photosynthetic parameters. Immediate and long term (minutes to days) changes in the photoprotective pigments (DD-cycle) were analysed. Severe photodamage occurred in microalgal assemblages exposed to high light. However, part of the bottom ice algal community showed a notable ability to acclimate to high irradiance levels. Changes in photosynthetic parameters preceded the sudden abrupt changes in pigment synthesis and the rapid increase in biomass and growth rates. Article in Journal/Newspaper Antarc* Antarctic ice algae Ross Sea IRIS Università degli Studi di Napoli Federico II Antarctic Austral Ross Sea Terra Nova Bay |
institution |
Open Polar |
collection |
IRIS Università degli Studi di Napoli Federico II |
op_collection_id |
ftunivnapoliiris |
language |
English |
topic |
HPLC pigment Ross Sea |
spellingShingle |
HPLC pigment Ross Sea MANGONI, OLGA G. C. CARRADA M. MODIGH G. CATALANO V. SAGGIOMO Photoacclimation in Antarctic bottom ice algae: an experimental approach |
topic_facet |
HPLC pigment Ross Sea |
description |
The aim of the study was to investigate the capacity of microalgae from the extremely low light habitat of bottom ice to acclimate to different light conditions. During austral spring 1997 the bottom layer of land-fast ice in Terra Nova Bay displayed high values of microalgal biomass up to 2,400 lg Chla L-1 concentrated in a few centimetres ice layer. The algal assemblage was dominated by benthic pennate diatoms. Photoacclimation of the microalgae was addressed in terms of pigment spectra and photosynthetic parameters. Immediate and long term (minutes to days) changes in the photoprotective pigments (DD-cycle) were analysed. Severe photodamage occurred in microalgal assemblages exposed to high light. However, part of the bottom ice algal community showed a notable ability to acclimate to high irradiance levels. Changes in photosynthetic parameters preceded the sudden abrupt changes in pigment synthesis and the rapid increase in biomass and growth rates. |
author2 |
Mangoni, Olga G. C., Carrada M., Modigh G., Catalano V., Saggiomo |
format |
Article in Journal/Newspaper |
author |
MANGONI, OLGA G. C. CARRADA M. MODIGH G. CATALANO V. SAGGIOMO |
author_facet |
MANGONI, OLGA G. C. CARRADA M. MODIGH G. CATALANO V. SAGGIOMO |
author_sort |
MANGONI, OLGA |
title |
Photoacclimation in Antarctic bottom ice algae: an experimental approach |
title_short |
Photoacclimation in Antarctic bottom ice algae: an experimental approach |
title_full |
Photoacclimation in Antarctic bottom ice algae: an experimental approach |
title_fullStr |
Photoacclimation in Antarctic bottom ice algae: an experimental approach |
title_full_unstemmed |
Photoacclimation in Antarctic bottom ice algae: an experimental approach |
title_sort |
photoacclimation in antarctic bottom ice algae: an experimental approach |
publishDate |
2009 |
url |
http://hdl.handle.net/11588/362531 |
geographic |
Antarctic Austral Ross Sea Terra Nova Bay |
geographic_facet |
Antarctic Austral Ross Sea Terra Nova Bay |
genre |
Antarc* Antarctic ice algae Ross Sea |
genre_facet |
Antarc* Antarctic ice algae Ross Sea |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000263389000002 volume:32 firstpage:325 lastpage:335 numberofpages:11 journal:POLAR BIOLOGY http://hdl.handle.net/11588/362531 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-60449100819 |
op_rights |
info:eu-repo/semantics/closedAccess |
_version_ |
1796300594374246400 |