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Effects of alterations in fresh water supply on the abundance and distribution of Engraulis encrasicolus in the Guadiana estuary and adjacent coastal areas of south Portugal

2001Journal article Open access
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dc.contributor.authorChícharo, Luís
dc.contributor.authorChicharo, Alexandra
dc.contributor.authorEsteves, E.
dc.contributor.authorAndrade, José Pedro
dc.contributor.authorMorais, P.
dc.date.accessioned2014-10-15T10:42:54Z
dc.date.available2014-10-15T10:42:54Z
dc.date.issued2001
dc.date.updated2014-10-10T10:50:55Z
dc.description.abstractA reduction of inflow to the Guadiana River on the border between Portugal and Spain may directly contribute to the degradation of fish habitats. Changes are expected to the spawning behaviour of Engraulis encrasicolus adults, to the migration patterns of larvae in the estuary, and to the catches of fisheries in the lower part of the river and adjacent coastal areas. Spawning of E. encrasicolus occurs in the lower part of the estuary and in the adjacent coastal areas. However, high abundances of larvae have been registered in the middle and upper parts of the estuary, the most productive region of the estuary, that with the estuarine turbidity maximum (ETM). In a year of normal inflow, such as the hydrologic year 1987-1988, some retention of larvae occured in this area. However, in an abnormal hydrologic year with a low inflow (1999-2000), and with an increase in freshwater inflow during the spring months, a disturbance to the migration pattern seems to have affected the survival of larvae in the estuary. High river flow, probably associated with an increased input of nutrients, appears to have important und positive effect on adult numbers, because anchovy fishery catches in the adjacent coastal area increased under these conditions.por
dc.identifier.citationChícharo, L. M.; Chícharo, M.Alexandra; Esteves, Eduardo; Andrade, J. P.; Pedro Morais. Effects of alterations in fresh water supply on the abundance and distribution of Engraulis encrasicolus in the Guadiana estuary and adjacent coastal areas of south Portugal , International Journal of ECOHYDROLOGY & HYDROBIOLOGY, 1, 3, 341-346, 2001.por
dc.identifier.issn1642-3593
dc.identifier.otherAUT: LCH00360; MCH00377; EES01759; JAN00399;
dc.identifier.urihttp://hdl.handle.net/10400.1/5318
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherEuropean Regional Centre for Ecohydrology of Polish Academy of Sciencespor
dc.subjectInflow variabilitypor
dc.subjectFish eggs, larvae and adultspor
dc.subjectHabitat changespor
dc.subjectAnchovypor
dc.subjectEngraulis encrasicoluspor
dc.titleEffects of alterations in fresh water supply on the abundance and distribution of Engraulis encrasicolus in the Guadiana estuary and adjacent coastal areas of south Portugalpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage346por
oaire.citation.issue3por
oaire.citation.startPage341por
oaire.citation.titleInternational Journal of ECOHYDROLOGY & HYDROBIOLOGYpor
oaire.citation.volume1por
person.familyNameChicharo
person.familyNameTeodosio
person.familyNameEsteves
person.familyNameAndrade
person.familyNameMorais
person.givenNameLuis
person.givenNameMaria
person.givenNameEduardo
person.givenNameJose
person.givenNamePedro
person.identifier424141
person.identifier.ciencia-id6716-EE1C-B995
person.identifier.ciencia-idAF10-647B-65FB
person.identifier.ciencia-idC81D-666A-FF24
person.identifier.ciencia-idD514-1A21-F020
person.identifier.ciencia-id1A19-7E90-8BDD
person.identifier.orcid0000-0002-4933-2300
person.identifier.orcid0000-0002-0939-9885
person.identifier.orcid0000-0002-1872-8185
person.identifier.orcid0000-0002-5482-9776
person.identifier.orcid0000-0002-0861-5566
person.identifier.ridB-5077-2013
person.identifier.ridE-9582-2012
person.identifier.ridF-2815-2011
person.identifier.scopus-author-id6602881426
person.identifier.scopus-author-id56196396700
person.identifier.scopus-author-id7003885183
person.identifier.scopus-author-id7201722097
person.identifier.scopus-author-id7005946306
rcaap.rightsopenAccesspor
rcaap.typearticlepor
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