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Simulating Ucides cordatus population recovery on fished grounds.

Piou, Cyril; Berger, Uta; Diele, Karen


Cyril Piou

Uta Berger


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.


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.

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
Keywords Ucides cordatus; Caeté Peninsula; resource competition; fishing grounds; population density;
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