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Status of the Guadiana estuary (South Portugal) during 1996-1998: an ecohydrological approach

2001Journal article Restricted access
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dc.contributor.authorTeodosio, Maria
dc.contributor.authorChícharo, Luís
dc.contributor.authorGalvão, Helena M.
dc.contributor.authorBarbosa, Ana B.
dc.contributor.authorMarques, M. Helena
dc.contributor.authorAndrade, José Pedro
dc.contributor.authorEsteves, E.
dc.contributor.authorMiguel, Cláudia
dc.contributor.authorGouveia, Isabel
dc.date.accessioned2012-11-29T14:53:29Z
dc.date.available2012-11-29T14:53:29Z
dc.date.issued2001
dc.description.abstractThe aims of this study were to monitor basic hydrological and ecological characteristics of the Guadiana Estuary (1996–1998) before the construction of the Alqueva dam. This work was carried out to determine how environmental factors affect seasonal and tidal variations of plankton populations in the estuary. The available information on the subcatchment of the estuary (e.g., urban, agricultural and forested areas) was integrated into a geographic information system-based software program. Mean monthly river flow varied markedly on a seasonal and yearly basis. River flow near Mértola (ca 50 km upstream from the mouth) reached 3400×106 m3 in winter and decreased to 42×106 m3 in summer. With respect to nutrients, nitrogen to phosphorus ratios indicated some limitation by phosphorus, except at the end of summer, when nitrogen limitation appeared. During this period, cyanobacterial blooms usually occurred in the upper/middle estuary. Estuarine Turbidity Maximum may significantly influence the retention of zooplankton in the estuary. The fish larval life cycle, especially sensitive to environmental alterations, showed high ratios of ribonucleic to desoxyribonucleic acids indicating good physiological condition. It was concluded that an ecohydrological approach, allowing integration of different elements from the cellular to the habitat level into a geographic information system, can contribute to a better understanding of the processes that influence the aquatic biota of the estuary. The approach will be a useful assessment tool for monitoring the estuary following dam completion.por
dc.identifier.citationChícharo MA, LM Chícharo, HM Galvão, AB Barbosa, MH Marques, JP Andrade, E Esteves, C Miguel, C Gouveia, 2001. Status of the Guadiana estuary (South Portugal) during 1996-1998: an ecohydrological approach. Aquatic Ecosystem Health and Management, 4: 73-89.por
dc.identifier.otherAUT: MCH00377;HGA00327;JAN00399;ABA00694;EES01759
dc.identifier.urihttp://hdl.handle.net/10400.1/1902
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherTaylor & Francispor
dc.relation.publisherversionDOI:10.1080/146349801753569298por
dc.subjectPlanktonpor
dc.subjectGISpor
dc.subjectRNA/DNA ratiospor
dc.subjectEstuariespor
dc.subjectGuadianapor
dc.titleStatus of the Guadiana estuary (South Portugal) during 1996-1998: an ecohydrological approachpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage89por
oaire.citation.startPage73por
oaire.citation.titleAquatic Ecosystem Health and Managementpor
oaire.citation.volume4por
person.familyNameTeodosio
person.familyNameChicharo
person.familyNameGalvão
person.familyNameBarbosa
person.familyNameAndrade
person.familyNameEsteves
person.givenNameMaria
person.givenNameLuis
person.givenNameHelena
person.givenNameAna
person.givenNameJose
person.givenNameEduardo
person.identifier1291299
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person.identifier.ciencia-idF514-2180-4CF8
person.identifier.ciencia-idD514-1A21-F020
person.identifier.ciencia-idC81D-666A-FF24
person.identifier.orcid0000-0002-0939-9885
person.identifier.orcid0000-0002-4933-2300
person.identifier.orcid0000-0003-0939-8994
person.identifier.orcid0000-0002-7402-246X
person.identifier.orcid0000-0002-5482-9776
person.identifier.orcid0000-0002-1872-8185
person.identifier.ridB-5077-2013
person.identifier.ridE-9582-2012
person.identifier.scopus-author-id56196396700
person.identifier.scopus-author-id6602881426
person.identifier.scopus-author-id6505974701
person.identifier.scopus-author-id7103244778
person.identifier.scopus-author-id7201722097
person.identifier.scopus-author-id7003885183
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
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