Diversidad de condricthyes y osteichthyes en tres ecosistemas marinos: manglar, arrecife coralino y rocoso de la zona submareal de la isla San Cristóbal
Fecha
2011
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Universidad de Guayaquil. Facultad de Ciencias Naturales. Escuela de Biología
Resumen
El presente trabajo fue realizado en San Cristóbal-Galápagos,empleando la metodología de transectos lineales de peces en tres tipos de ecosistemas:coral,rocoso y manglar, se utilizó un carrete con una cinta de 50 metros para realizar transectos lineales en donde se registraron las especies de peces y número de individuos para cada una.Se escogieron cinco sitios de la isla
representantes de los tres ecosistemas:Isla Lobos,Las Negritas,La Tortuga,Rosa Blanca
Manglar,Rosa Blanca Coral y Punta Pitt, desde Febrero hasta Agosto del 2010.Se
identificaron un total de 66 especies distribuidas en 32 familias, de las cuales tan solo en 10% resultaron ser especies endémicas a Galápagos,la mayor parte de especies registradas en este estudio fueron especies de amplia distribución y panámicas.
Se detectaron diferencias significativas en los índices de dominancia y riqueza específica entre los ecosistemas manglar-rocoso y manglar-coral,al comparar las diferencias temporales para cada sitio,sólo en las Negritas se evidenciaron estas diferencias(ANOVA dos vías,Tukey P<
0,05).A nivel de la estructura comunitaria de peces,los corales y ecosistemas rocosos fueron similares, mientras que los manglares resultaron diferentes con respecto a los otros dos ecosistemas.
This work was done in San Cristobal, Galapagos,using line transect methodology of fish in three ecosystems:coral,rocky and mangrove,we used a tape reel with 50 meters for line transects were recorded where fish species and number of individuals for each una.Se chose five sites of the island representatives of the three ecosystems : Isla Lobos,The Bold,The Turtle ,White Rose Mangrove,White Rose Coral and Punta Pitt , from February to August 2010.Se A total of 66 species distributed in 32 families,of which just over 10 % were found to be endemic to the Galapagos,the majority of species recorded in this study were widely distributed species and panámicas. Significant differences in rates of dominance and species richness between ecosystems and mangrove mangrove- rocky - coral,comparing temporary differences for each site, the Bold is only showed these differences( two-way ANOVA,Tukey P < 0.05 ).At the level of the community structure of fish ,corals and rocky ecosystems were similar,while mangroves were different with respect to the other two ecosystems
This work was done in San Cristobal, Galapagos,using line transect methodology of fish in three ecosystems:coral,rocky and mangrove,we used a tape reel with 50 meters for line transects were recorded where fish species and number of individuals for each una.Se chose five sites of the island representatives of the three ecosystems : Isla Lobos,The Bold,The Turtle ,White Rose Mangrove,White Rose Coral and Punta Pitt , from February to August 2010.Se A total of 66 species distributed in 32 families,of which just over 10 % were found to be endemic to the Galapagos,the majority of species recorded in this study were widely distributed species and panámicas. Significant differences in rates of dominance and species richness between ecosystems and mangrove mangrove- rocky - coral,comparing temporary differences for each site, the Bold is only showed these differences( two-way ANOVA,Tukey P < 0.05 ).At the level of the community structure of fish ,corals and rocky ecosystems were similar,while mangroves were different with respect to the other two ecosystems
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ANIMALES ACUÁTICO, ECOSISTEMA, ISLA SAN CRITÓBAL- GALÁPAGOS