Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/5297
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dc.contributor.authorDolbeth, M.-
dc.contributor.authorMartinho, F.-
dc.contributor.authorViegas, I.-
dc.contributor.authorCabral, H.-
dc.contributor.authorPardal, M. A.-
dc.date.accessioned2008-09-01T15:39:49Z-
dc.date.available2008-09-01T15:39:49Z-
dc.date.issued2008en_US
dc.identifier.citationEstuarine, Coastal and Shelf Science. 78:1 (2008) 51-60en_US
dc.identifier.urihttp://hdl.handle.net/10316/5297-
dc.description.abstractThe production of resident (Pomatoschistus minutus and Pomatoschistus microps) and marine juvenile fish species using the Mondego estuary (central Portugal) as nursery grounds (Dicentrarchus labrax, Platichthys flesus, Solea solea), was assessed in order to: (1) understand the potential of the estuary for fish production; (2) know the production of nursery fish species likely to be exported to the coastal stocks; and (3) how anthropogenic and natural stress could influence the estimated production. Sampling occurred from June 2003 to May 2006 and together the 5 species in study comprised around 70% of the whole fish community numbers and biomass. Increasing drought conditions were observed, starting with a normal hydrological year in 2003 until attaining a severe drought in 2005, which resulted in low river discharges (1/3 of the mean river discharges in 2003). Additionally, high water temperatures were observed in 2003 and 2005 (24 and 26 °C, night temperatures). The secondary production was estimated using the increment summation method, after recognition of the cohorts. Production was in general lower in the Mondego estuary when compared to other systems, which was associated to the estuary's small area (only 3.4 km2, less than 1/4 of area compared to other studied systems). Dicentrarchus labrax was among the most productive species. Production decreased in the drought year for all species, especially evident for D. labrax, P. minutus and P. flesus. No direct effects could be attributable to the salinity and temperature variations and to the low freshwater discharges (resulting from the drought and high temperatures), yet these were pointed as probable major reasons for the decreased production. A significant reduction (15-45% reduction in the estuarine production) was also concluded for the potential production to be exported for coastal areas by the nursery species in the drought conditions.en_US
dc.description.urihttp://www.sciencedirect.com/science/article/B6WDV-4R9GGXS-2/1/663d5981f8928a75fea6999bf328f16fen_US
dc.format.mimetypeaplication/PDFen
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectfish productionen_US
dc.subjectresident speciesen_US
dc.subjectnursery speciesen_US
dc.subjectdroughten_US
dc.subjectMondego estuaryen_US
dc.titleEstuarine production of resident and nursery fish species: Conditioning by drought events?en_US
dc.typearticleen_US
uc.controloAutoridadeSim-
item.fulltextCom Texto completo-
item.languageiso639-1en-
item.grantfulltextopen-
crisitem.author.deptFaculdade de Ciências e Tecnologia, Universidade de Coimbra-
crisitem.author.parentdeptUniversidade de Coimbra-
crisitem.author.researchunitMARE - Marine and Environmental Sciences Centre-
crisitem.author.researchunitCentre for Functional Ecology-
crisitem.author.orcid0000-0002-7646-6208-
crisitem.author.orcid0000-0001-6048-7007-
Appears in Collections:FCTUC Ciências da Vida - Artigos em Revistas Internacionais
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