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Aquatic plants in the rice fields of the Tagus Valley, Portugal

1999Journal article Open access
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dc.contributor.authorVasconcelos, T.
dc.contributor.authorTavares, M.
dc.contributor.authorGaspar, Natália
dc.date.accessioned2011-06-03T08:38:59Z
dc.date.available2011-06-03T08:38:59Z
dc.date.issued1999
dc.description.abstractIn 1997, in 50 surveys of irrigated rice fields (Oryza sativa L.), 47 species of vascular plants were recorded in 19 families. Most of the species belonged to the Gramineae and Cyperaceae families. Seven species of algae were found, mostly Hydrodictyon reticulatum (42%) and Chara vulgaris (38%). Echinochloa crus-galli and Paspalum paspalodes showed a relative frequency of 98% and 82%, respectively. An interpretation of the major factors is presented influencing weed distribution. Amongst the weeds recorded, 13 were alien species. For these alien species the probable date of introduction into Portugal and into rice fields was determined. The recently introduced neophytes Heteranthera limosa and Heteranthera reniformis and the increasing presence of red rice (Oryza sativa), represent a potential danger to rice culture.por
dc.identifier.citationVASCONCELOS, T.; TAVARES M, GASPAR, N. 1 (1999) - Aquatic plants in the rice fields of the Tagus Valley, Portugal. Hydrobiologia, 415: 59-65.por
dc.identifier.issn0018-8158
dc.identifier.urihttp://hdl.handle.net/10400.15/450
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherKluwerpor
dc.relation.publisherversionhttp://www.springerlink.com/content/t6466x8734857145/fulltext.pdfpor
dc.subjectEcological profilespor
dc.subjectRice weedspor
dc.subjectOryza sativapor
dc.subjectHeteranthera limosapor
dc.subjectHeteranthera reniformispor
dc.subjectArrozpor
dc.subjectInfestante aquáticapor
dc.subjectVale do Tejopor
dc.titleAquatic plants in the rice fields of the Tagus Valley, Portugalpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceDordrechtpor
oaire.citation.titleHydrobiologiapor
rcaap.rightsopenAccesspor
rcaap.typearticlepor

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