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Modelling growth of Ruppia cirrhosa
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Orientador(es)
Resumo(s)
The main objectives of this work were to synthesise information on the autoecology of Ruppia
cirrhosa Petagna (Grande) in a mathematical model and to use the model to simulate its growth,
production and harvest. Model parameters were allowed to vary as a result of acclimation, following
experimental data reported in the literature. Biomass data from Santo André lagoon (SW Portugal)
were used to calibrate the model. Validation was carried out with independent data sets from
Santo André lagoon and from Tancada lagoon (NE Spain). Model simulations show a reasonable
agreement with observed data with a similar biomass temporal dynamics and peaks. Self-shading
appears to be an important self-regulating mechanism of biomass growth and production. The results
obtained predict an annual net primary production of 361 gDWm−2well within the estimates based
on harvesting techniques (295–589 gDWm−2). Model results suggest that controlled harvesting of
macrophyte biomass may be carried out without affecting macrophyte real net production, through
the reduction of light limitation under the plant canopy. © 2000 Elsevier Science B.V. All rights
reserved.
Descrição
Palavras-chave
Macrophyte production Coastal lagoon Modelling Ruppia cirrhosa
Contexto Educativo
Citação
Aquatic Botany. 68 (1) (2000), pp. 29 - 44.