A Mathematical Model Based on System Dynamics to Establish the Biomass of a Fishery and Its Sustainability

By Carlos Fernandez Caballero, Isabel Muñoz del Toro, Luis Jaime Marco García, Eva García del Toro and Maria Isabel Mas.

Published by The International Journal of Environmental Sustainability

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Article: Print $US10.00
Article: Electronic $US5.00

We have developed a mathematical model that can set the amount of biomass in a given fishery, based on its biological behavior, and its respective sustainable yield curves. In this way, in line with the evidence of different catches in various fisheries' registered annuities, the model also allows the system to determine whether the fishery constitutes a form of sustainable fishery to allow subsistence fishing or lead to its collapse or disappearance. The model has been applied to the case of the white shrimp fishing grounds of Guinea Bissau in adapting to historical catch data provided by FAO and the Guinean authorities, thus obtaining results that fit perfectly with previous records, and allow it to assess the volume of biomass in a figure of about 27,500 tons. Their exploitation, according to current conditions, by extrapolating them to a future of more than one hundred years, can be regarded as entirely sustainable.

Keywords: Sustainability, Model, System Dynamics, Fishery

The International Journal of Environmental Sustainability, Volume 8, Issue 4, pp.87-99. Article: Print (Spiral Bound). Article: Electronic (PDF File; 481.662KB).

Prof. Carlos Fernandez Caballero

Professor, Department of Civil Engineering, Urban Services, Universidad Politecnica de Madrid, Madrid, Spain

Professor Carlos Fernandes Caballero is an agronomist engineer and professor in the Civil School in the Polytechnic University of Madrid. He is a member of the research group, Numerical Modelling of Civil Engineering and the Environment.

Prof. Isabel Muñoz del Toro

Independent University Professor, Catholic University of Avila, Polytechnic University of Madrid, Avila, Castilla y León, Spain

Professor Muñoz del Toro has a degree in economics business. She is an independent university professor of economy in the Catholic University of Avila, and a member of the research group, Numerical Modelling of Civil Engineering and the Environment.

Prof. Luis Jaime Marco García

Professor, Department of Civil Engineering, Construction Technology, Polytechnic University of Madrid, Madrid, Spain

Luis Jaime Marco Garcia has a PhD in civil engineering. He is responsible for the research group, Numerical Modelling for Civil Enginering and the Enviroment. He is a professor of construction in the Civil Engineering School in the Polytechnic University of Madrid. He was principal and president of the Foundation Sciences of the Man in Spain.

Prof. Eva García del Toro

Professor, Department: Civil Engineering: Urban Services, Universidad Politecnica de Madrid, Madrid, -, Spain

Enviromental Engeneering and Professor in the Civil Engeneering School in the Politechnic University of Madrid. Member of the Investigation Group: "Numerical Modelling for the Civil engenering and Enviroment".

Prof. Maria Isabel Mas

Professor, Department: Civil Engineering: Construction Technology, UPM, Madrid, Madrid, Spain

Civil Engeneering and Professor in the Civil Engenerring School in the Politechnic University of Madrid. Member of the Investigation Group: "Numerical Modelling for the Civil engenering and Enviroment".