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dc.contributor.author
Villafañe, Virginia Estela
dc.contributor.author
Janknegt, Paul J.
dc.contributor.author
de Graaff, Marco
dc.contributor.author
Visser, Ronald J. W.
dc.contributor.author
van de Poll, Willem H.
dc.contributor.author
Buma, Anita G. J.
dc.contributor.author
Helbling, Eduardo Walter
dc.date.available
2020-03-19T19:47:48Z
dc.date.issued
2008-07
dc.identifier.citation
Villafañe, Virginia Estela; Janknegt, Paul J.; de Graaff, Marco; Visser, Ronald J. W.; van de Poll, Willem H.; et al.; UVR-induced photoinhibition of summer marine phytoplankton communities from Patagonia; Springer; Marine Biology; 154; 6; 7-2008; 1021-1029
dc.identifier.issn
0025-3162
dc.identifier.uri
http://hdl.handle.net/11336/100349
dc.description.abstract
During austral summer 2006, experiments were carried out to evaluate the effects of ultraviolet radiation (UVR, 280-400 nm) on carbon fixation of natural phytoplankton assemblages from Patagonia (Argentina). Surface water samples were collected (ca. 100 m offshore) at mid morning using an acid-cleaned (1 N HCl) dark container. The short-term impact of UVR (measured as radiocarbon incorporation) was immediately assessed by exposing samples to three artificial illumination treatments: PAR (400-700 nm), PAR + UV-A (320-700 nm), and PAR + UV-A + UV-B (280-700 nm). Pico-nanoplankton characterized the assemblages, and taxon-specific pigment fingerprinting combined with CHEMTAX and supplemented with microscopic observations showed varied proportions of diatoms, chlorophytes, and cyanobacteria throughout January-February 2006. Photosynthetic efficiency, as assessed through assimilation numbers, was high [between 4.4 and 10.4 μg C (μg chl-a)-1 h-1], and it was probably favored by the supply of inorganic nutrients from the Chubut River. UVR-induced photoinhibition appeared to be related to the taxonomic composition: in general, higher photoinhibition was observed when diatoms dominated, whereas this was lower when samples were dominated by chlorophytes. Our data suggest that xanthophyll pigments might have provided only limited protection in these already highlighted acclimated assemblages. © 2008 Springer-Verlag.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
UVR
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Patagonia
dc.subject
photoinhibition
dc.subject.classification
Otros Tópicos Biológicos
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Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
UVR-induced photoinhibition of summer marine phytoplankton communities from Patagonia
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-03-16T15:05:41Z
dc.journal.volume
154
dc.journal.number
6
dc.journal.pagination
1021-1029
dc.journal.pais
Alemania
dc.description.fil
Fil: Villafañe, Virginia Estela. Fundación Playa Unión; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Janknegt, Paul J.. University of Groningen; Países Bajos
dc.description.fil
Fil: de Graaff, Marco. University of Groningen; Países Bajos
dc.description.fil
Fil: Visser, Ronald J. W.. University of Groningen; Países Bajos
dc.description.fil
Fil: van de Poll, Willem H.. University of Groningen; Países Bajos
dc.description.fil
Fil: Buma, Anita G. J.. University of Groningen; Países Bajos
dc.description.fil
Fil: Helbling, Eduardo Walter. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fundación Playa Unión; Argentina
dc.journal.title
Marine Biology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00227-008-0993-0
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00227-008-0993-0
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