Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/5395
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dc.contributor.authorAnastácio, P. M.-
dc.contributor.authorGonçalves, S. C.-
dc.contributor.authorPardal, M. A.-
dc.contributor.authorMarques, J. C.-
dc.date.accessioned2008-09-01T15:41:32Z-
dc.date.available2008-09-01T15:41:32Z-
dc.date.issued2003en_US
dc.identifier.citationEstuarine, Coastal and Shelf Science. 58:Supplement 1 (2003) 149-157en_US
dc.identifier.urihttp://hdl.handle.net/10316/5395-
dc.description.abstractThis study provides a population dynamics model for one of the most common species (Talitrus saltator) in sandy beaches. Sensitivity analysis showed that in the model the abundance of T. saltator is deeply affected by variations in the minimum recruitment day length, the minimum temperature at recruitment, and the period between recruitments. The mortality rate, as expected, also had a profound effect on model performance. The abundance (IST, ind m-1) of T. saltator was most sensitive to the initial number of individuals in age class 5 (ca. 4 months old) and least sensitive to the initial number in age class 9 (ca. 8 months old). Data used for the calibration of the model were obtained in the Lavos beach in central Portugal. The model is based on differential equations and it was constructed using Stella simulation software. Five different model versions were tested corresponding to different modes of recruitment that could fit the data. It was found that the best model was obtained when considering reproduction dependent on temperature and photoperiod and occurring on a semi-lunar basis. Two out of the five different model versions tested gave a good statistical performance. Only one of these two model versions makes an effective use of causality mechanisms. This was also the model with the best intercept and slope of the simulated vs. observed regression equation. The other statistically satisfactory model used continuous reproduction between two dates. These dates do not match a photoperiod threshold. The final model version (e) may serve as a useful tool, when used alone or when coupled with other models. One of its uses could be in assessing the effects of human actions upon a sandy beach ecosystem.en_US
dc.description.urihttp://www.sciencedirect.com/science/article/B6WDV-49MDYT6-5/1/6e5738de8a7f7ea6ba991fcea48ddb61en_US
dc.format.mimetypeaplication/PDFen
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectsandy beachesen_US
dc.subjectsandhopperen_US
dc.subjectCrustaceaen_US
dc.subjectrecruitmenten_US
dc.subjectphotoperioden_US
dc.subjecttemperatureen_US
dc.subjectAtlantic Oceanen_US
dc.subjectPortugalen_US
dc.titleA model for amphipod (Talitrus saltator) population dynamicsen_US
dc.typearticleen_US
item.fulltextCom Texto completo-
item.languageiso639-1en-
item.grantfulltextopen-
crisitem.author.deptFaculdade de Ciências e Tecnologia, Universidade de Coimbra-
crisitem.author.deptFaculdade de Ciências e Tecnologia, Universidade de Coimbra-
crisitem.author.parentdeptUniversidade de Coimbra-
crisitem.author.parentdeptUniversidade de Coimbra-
crisitem.author.researchunitMARE - Marine and Environmental Sciences Centre-
crisitem.author.researchunitCentre for Functional Ecology-
crisitem.author.researchunitMARE - Marine and Environmental Sciences Centre-
crisitem.author.orcid0000-0003-1970-0181-
crisitem.author.orcid0000-0001-6048-7007-
crisitem.author.orcid0000-0001-8865-8189-
Appears in Collections:FCTUC Ciências da Vida - Artigos em Revistas Internacionais
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