Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/380
Author(s): P. Duarte
B. Azevedo
C. Ribeiro
António Manuel Correia Pereira
M. Falcão
D. Serpa
R. Bandeira
J. Reia
Title: Management oriented mathematical modelling of Ria Formosa (South Portugal)
Issue Date: 2007
Abstract: 1 - Ria Formosa is a large (c.a. 100 km2) mesotidal lagoon system included in a Natural Park, with large intertidal areas and several uses such as fisheries, aquaculture, tourism and nature conservation. Its watersheds cover an area of approximately 864 km2, with a hydrographic network of small and, mostly, ephemeral rivers.2 - The Soil and Water Assessment Tool (SWAT model) has been applied to the catchments in order to simulate water discharges to Ria Formosa, providing forcing to a two-dimensional vertically integrated model, implemented with EcoDynamo - an object oriented modelling software - including hydrodynamics, water column, sediment biogeochemistry and growth models for some important benthic species.3 - The main objectives of this work are to: (i) Analyse model performance in the light of available data; (ii) Evaluate the effects of dredging operations and changes in biomass densities of cultivated clams, on lagoon biogeochemistry and water quality.4 - This work is part of a larger project where many possible management scenarios are being analysed following concerns expressed by the project end-users - Ria Formosa Natural Park authority.5 - Results obtained so far suggest that bivalve rearing areas are probably being exploited close to their carrying capacity. Furthermore, it is apparent that some improvement on water quality could be achieved by reducing bivalve densities, without significant losses of harvest yields.
Description: 1 - Ria Formosa is a large (c.a. 100 km2) mesotidal lagoon system included in a Natural Park, with large intertidal areas and several uses such as fisheries, aquaculture, tourism and nature conservation. Its watersheds cover an area of approximately 864 km2, with a hydrographic network of small and, mostly, ephemeral rivers.2 - The Soil and Water Assessment Tool (SWAT model) has been applied to the catchments in order to simulate water discharges to Ria Formosa, providing forcing to a two-dimensional vertically integrated model, implemented with EcoDynamo - an object oriented modelling software - including hydrodynamics, water column, sediment biogeochemistry and growth models for some important benthic species.3 - The main objectives of this work are to: (i) Analyse model performance in the light of available data; (ii) Evaluate the effects of dredging operations and changes in biomass densities of cultivated clams, on lagoon biogeochemistry and water quality.4 - This work is part of a larger project where many possible management scenarios are being analysed following concerns expressed by the project end-users - Ria Formosa Natural Park authority.5 - Results obtained so far suggest that bivalve rearing areas are probably being exploited close to their carrying capacity. Furthermore, it is apparent that some improvement on water quality could be achieved by reducing bivalve densities, without significant losses of harvest yields.
Subject: Ecologia aquática, Engenharia do ambiente
Aquatic ecology, Environmental engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia do ambiente
Engineering and technology::Environmental engineering
URI: https://repositorio-aberto.up.pt/handle/10216/380
Document Type: Artigo em Revista Científica Internacional
Rights: openAccess
License: https://creativecommons.org/licenses/by-nc/4.0/
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

Files in This Item:
File Description SizeFormat 
54962.pdf1.83 MBAdobe PDFView/Open


This item is licensed under a Creative Commons License Creative Commons