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Simulating Ucides cordatus Population Recovery on Fished Grounds

Chapter
Part of the Ecological Studies book series (ECOLSTUD, volume 211)

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.

Keywords

Spatial Distribution Pattern Recovery Pattern Crab Population Avicennia Germinans Crab Burrow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  1. 1.Pôle d’Hydrobiologie, Ecologie Comportementale et Biologie des Populations de Poissons, Quartier IbarronINRASaint Pée sur NivelleFrance
  2. 2.Institute of Forest Growth and Forest Computer SciencesTU DresdenTharandtGermany
  3. 3.Leibniz Center for Tropical Marine EcologyBremenGermany

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