Simulating Ucides cordatus population recovery on fished grounds.

Piou, Cyril; Berger, Uta; Diele, Karen

Abstract

The recovery of fishing grounds of Ucides cordatus populations in the Caeté Peninsula is a recurrent process due to individual movements. However, these movements could not be observed in the field. A pattern-oriented modeling approach was used to infer on U. cordatus individual behaviors from population-level observations. An individual-based model was specifically developed for this purpose. The model results informed that the reason of decision of movement of individual crabs was probably a local density-dependent process. Also, fitting the model to field spatial distribution patterns, this process could be seen as an intra-specific competition for nearby resources. It was hypothesized that the spatially structured organization of U. cordatus populations act as hierarchical buffer systems with nonfished high-density areas filling back the fishing grounds at different speeds. Density-induced movement may therefore be an important aspect for the sustainability of the U. cordatus fishery.

Citation

Piou, C., Berger, U., & Diele, K. (2010). Simulating Ucides cordatus population recovery on fished grounds. In Mangrove Dynamics and Management in North Brazil, 299-303. Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-642-13457-9_20

• Publication Date: 2010
• Deposit Date: Sep 24, 2013
• Peer Reviewed: Peer Reviewed
• Volume: 211
• Pages: 299-303
• Book Title: Mangrove Dynamics and Management in North Brazil
• ISBN: 978-3-642-13456-2
• DOI: https://doi.org/10.1007/978-3-642-13457-9_20
• Keywords: Ucides cordatus; Caeté Peninsula; resource competition; fishing grounds; population density
• Public URL: http://researchrepository.napier.ac.uk/id/eprint/6357
• Publisher URL: http://dx.doi.org/10.1007/978-3-642-13457-9_20