Efecto de borde sobre la población del cangrejo azul Cardisoma guanhumi (Decapoda : Gecarcinidae) en el manglar de la bahía El Uno, golfo de Urabá (Colombia) : una aproximación a su captura artesanal

ABSTRACT: The potential impacts of mangrove clearing on communities of benthic macro invertebrates are uncertain and poorly studied in Colombia, particularly in the Caribbean region. This study investigated the effect of mangrove conversion to pasture on the population of blue crab Cardisoma guanhumi (Decapoda: Gecarcinidae) in the El Uno bay mangrove, Uraba Gulf (Colombia). From March to Aprile 2012, we conducted daily sampling of specimens in three different vegetational covers: mangrove interior, pasture and mangrove-pasture edge (an anthropogenic edge produced by mangrove deforestation). Wr compared the distribution, abundance, weight and body size of C. Guanhumi specimens, and the abundance, diameter, and bioturbation of their burrows. Visits and interviews with folk crab haversters were conducted during Easter Week. We found a higher number of individuals form the mangrove interior exhibiting greater weight and size than those in pasture and edge, with no differences documented between the latter two. We found no differences in the number of burrows or amount of removed sediment (bioturbation) among the different cover types, and there was no significant relationship between. Burrow diameter and bioturbation. We observed a high pressure on this crab population due to folk harvest during the sampling period. In conclusion, we demonstrated the occurrence of an edge effect on the C. Guanhumi population promoted by mangrove conversion to pasture.

• Autores: Arroyave Rincón, Andrea; Blanco Libreros, Juan Felipe; Taborda Marín, Alexander; Amortegui Torres, Viviana
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2014
• Institución: Universidad de Antioquia
• Repositorio: Repositorio UdeA
• Idioma: spa
• OAI Identifier: oai:bibliotecadigital.udea.edu.co:10495/10045
• Acceso en línea: http://hdl.handle.net/10495/10045
• Palabra clave: Cangrejo azul gigante; Cardisoma guanhumi; Deforestación; Efecto de borde; Manglares; Manglares - Golfo de Urabá; Deforestation; Land crab; Mangrove forest
• Rights: openAccess
• License: Atribución-NoComercial-CompartirIgual 2.5 Colombia (CC BY-NC-SA 2.5 CO)