SciELO - Scientific Electronic Library Online

 
vol.57 issue4Variaciones en la abundancia de peces en sitios con diferente grado de contaminación del sublitoral de Ciudad de La Habana, CubaPhytoplankton assemblage of a small, shallow, tropical African reservoir author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Revista de Biología Tropical

On-line version ISSN 0034-7744Print version ISSN 0034-7744

Abstract

DELGADILLO-GARZON, Oscar  and  GARCIA, Camilo B. Impacto de dos arrecifes artificiales en la pesca artesanal diurna del Golfo de Morrosquillo, Caribe de Colombia. Rev. biol. trop [online]. 2009, vol.57, n.4, pp.993-1007. ISSN 0034-7744.

Impact of two artificial reefs on diurnal artisanal fishing at gulf of Morrosquillo, Colombian Caribbean. Fishing activity in two artificial reefs (ARs) was monitored between August 2001 and August 2002 in the gulf of Morrosquillo, to investigate their possible impact on the fishery dynamics. We determined catch per unit effort (CPUE) and catch composition, and found 19 species in Punta de Piedra and 36 in Tolú (16 species common to both). In Punta de Piedra, CPUE was 0.40 kg/hour/fisherman and estimated annual catch was 1 830 kg (Tolú values: 0.42 kg/hour/fisherman and 4 820 kg). No significant differences in CPUE were found between ARs and no seasonal pattern was evident. The differences in total composition and extracted biomass between ARs were mainly a consequence of greater effort exerted in Tolú, whereas the absence of trends and correlation with environmental factors of CPUE and species caught suggests that the ARs are near their carrying capacity. As expected, the ARs supported and improved CPUE and fishing success in comparison with reported values of natural habitats, traditional fishing grounds and some artificial habitats in the zone, owing to their greater volume, structural complexity and vertical profile. However, this increase could also be the result of biomass aggregation, not production. The potential negative impacts of ARs on the environment require experimental research. The deployment of non-extractive ARs and the controlled usage for fishery purposes could be a useful tool for resource enhancement and management in the area. Rev. Biol. Trop. 57 (4): 993-1007. Epub 2009 December 01.

Keywords : artificial reefs (ARs); catch per unit effort (CPUE); fishery dynamics; gulf of Morrosquillo; Colombia; Caribbean Sea.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License