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Effects of in situ shading on the photophysiology of Zostera marina and Cymodocea nodosa

2010Journal article Open access
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dc.contributor.authorSilva, João
dc.contributor.authorBarrote, Isabel
dc.contributor.authorAlbano, Sílvia
dc.contributor.authorCosta, Monya
dc.contributor.authorNeves, Pedro
dc.contributor.authorGraça, Gonçalo Nuno Santos Neto da
dc.contributor.authorSharon, Yoni
dc.contributor.authorBeer, S.
dc.contributor.authorSantos, Rui
dc.date.accessioned2014-01-06T10:58:16Z
dc.date.available2014-01-06T10:58:16Z
dc.date.issued2010
dc.description.abstractThe effects of light reduction were investigated in natural stands of the seagrasses Zostera marina and Cymodocea nodosa in Ria Formosa coastal lagoon, southern Portugal. Four shading plots and a control were set in each of two neighbouring meadows (2-3 m depth), each dominated by one species. The experiment lasted for 3 weeks, at the end of which the response of plant photosynthesis to light was determined via oxygen electrode measurements. Tissue samples were also analysed for photosynthetic pigment, soluble protein, soluble sugar and malondialdehyde contents. All plants presented a shade-adapted profile, mostly revealed by their biochemical composition. In both species the chlorophyll a/chlorophyll b ratio decreased sharply whereas the total chlorophyll/total carotenoids and the total chlorophyll/soluble protein ratios increased. Soluble protein content was reduced more noticeably in Z. marina. Soluble sugars dropped almost 40% in Z. marina leaves and roots, a more pronounced effect than the one observed in C. nodosa. Overall, Z. marina revealed to be more sensitive than C. nodosa to reductions in incident irradiance, suggesting that it will be more sensitive to human-induced disturbances that result in an increase of water turbidity.por
dc.identifier.citationSilva J, Barrote I, Albano S, Costa M, Neves P, Graça G, Sharon Y, Beer S, Santos R (2010). Effects of in situ shading on the photophysiology of Zostera marina and Cymodocea nodosa. The World Seagrass Conference, Phuket, Thailand, p 72por
dc.identifier.otherAUT: IBA00639;
dc.identifier.urihttp://hdl.handle.net/10400.1/3275
dc.language.isoengpor
dc.peerreviewedyespor
dc.subjectZostera marinapor
dc.subjectCymodocea nodosapor
dc.subjectSeagrasspor
dc.subjectShadingpor
dc.subjectPhotosynthetic pigmentspor
dc.subjectPhotosynthesispor
dc.subjectDisturbancepor
dc.subjectStress responsepor
dc.titleEffects of in situ shading on the photophysiology of Zostera marina and Cymodocea nodosapor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlacePhuket, Thailandpor
oaire.citation.endPage72por
oaire.citation.startPage72por
oaire.citation.titleThe World Seagrass Conferencepor
person.familyNameSilva
person.familyNameBarrote
person.familyNameSantos
person.givenNameJoão
person.givenNameIsabel
person.givenNameRui
person.identifier82814
person.identifier42560
person.identifier.ciencia-id8216-527E-1BD4
person.identifier.ciencia-id801C-0AE4-B5CA
person.identifier.ciencia-id9B18-444D-2244
person.identifier.orcid0000-0002-7211-1661
person.identifier.orcid0000-0002-0922-0259
person.identifier.orcid0000-0002-7861-4366
person.identifier.ridJ-7874-2013
person.identifier.ridB-4168-2008
person.identifier.scopus-author-id7403023547
person.identifier.scopus-author-id8659654200
person.identifier.scopus-author-id7201375018
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication61040b53-b17a-40f6-b42e-f5476a7a6ddb
relation.isAuthorOfPublication8027b4d2-ee8d-4432-be75-7a2342a905a8
relation.isAuthorOfPublication84487ca8-404a-4584-81f0-3662c340d712
relation.isAuthorOfPublication.latestForDiscovery61040b53-b17a-40f6-b42e-f5476a7a6ddb

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