Diversity and abundance of echinoderms and their relation with the benthic cover of the Enmedio Reef, Lobos-Tuxpan Reef System, Mexico
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| Autores: | , , , |
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| Formato: | artículo original |
| Estado: | Versión publicada |
| Fecha de Publicación: | 2017 |
| Descripción: | To date, the echinoderm community ecology of the Lobos-Tuxpan Reef System’s Natural Protected Area is still unknown. For this reason, the echinoderm species in the Enmedio Reef were counted using 1 m2 quadrants placed every 5 m over three 50 m-long transects in the posterior reef, the reef lagoon and the frontal reef. The species richness, abundance, density, equitability, Simpson’s dominance and true diversity were estimated using the data obtained. In addition, similarities were determined between the sampling areas by similarity and ordering analysis. A canonical correspondence analysis was also conducted using benthic cover as environmental variable. A total of 5569 echinoderms were quantified, identifying five classes, 10 orders, 16 families, 19 genera and 23 species. The density of echinoderms on the reef was 11.23 ind/m2; the most important species in terms of abundance and density were Echinometra viridis (3389 organisms, 6.85 ind/m2) and Echinometra lucunter lucunter (1803 organisms, 3.64 ind/m2). In the reef lagoon a greater richness, abundance and density of echinoderms was recorded, compared to the deep zones. In the three reef environments, high values of dominance and low values of true diversity were recorded. The sampling areas presented low similarity and did not show a distinctive zonation between reef environments. Only ten species of echinoderms showed affinities with corals, macroalgae, filamentous algae and debris; these substrata seem to be key factors in the distribution and abundance of echinoderms in the Enmedio reef. |
| País: | Portal de Revistas UNA |
| Institución: | Universidad Nacional de Costa Rica |
| Repositorio: | Portal de Revistas UNA |
| Lenguaje: | Español |
| OAI Identifier: | oai:ojs.www.una.ac.cr:article/10068 |
| Acceso en línea: | https://www.revistas.una.ac.cr/index.php/revmar/article/view/10068 |
| Palabra clave: | Hábitats bentónicos comunidad bentónica equinoideos ofiuras asteroideos Benthic habitats benthic community echinoids ophiura starfish Hábitats bentônicos comunidade bentônica equinoides ofiúros asteroides |