Utilize este identificador para referenciar este registo: http://hdl.handle.net/10284/279
Título: A methodology for parameter estimation in seaweed productivity modelling
Autor: Duarte, Pedro
Ferreira, João
Palavras-chave: Parameter Estimation
Productivity
Modelling
Growth
Data: 1993
Editora: Kluwer
Citação: Hydrobiologia. 260/261(1993), p. 183-189
Relatório da Série N.º: Hydrobiologia
260/261
Resumo: This paper presents a combined approach for parameter estimation in models of primary production. The focus is on gross primary production and nutrient assimilation by seaweeds. A database of productivity determinations, biomass and mortality measurements and nutrient uptake rates obtained over one year for Gelidium sesquipedale in the Atlantic Ocean off Portugal has been used. Annual productivity was estimated by harvesting methods, and empirical relationships using mortality/ wave energy and respiration rates have been derived to correct for losses and to convert the estimates to gross production. In situ determinations of productivity have been combined with data on the light climate (radiation periods, intensity, mean turbidity) to give daily and annual productivity estimates. The theoretical nutrient uptake calculated using a 'Redfield ratio' approach and determinations of in situ N and P consumption by the algae during incubation periods have also been compared. The results of the biomass difference and incubation approaches are discussed in order to assess the utility of coefficients determined in situ for parameter estimation in seaweed production models.
URI: http://hdl.handle.net/10284/279
Aparece nas colecções:3ERL - Papers/ Artigos Científicos

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