Predation and anthropogenic impact on community structure of boulder beaches
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Archivos
Fecha
2016
Profesor/a Guía
Facultad/escuela
Idioma
en
Título de la revista
ISSN de la revista
Título del volumen
Editor
INST CIENCIAS MAR BARCELONA
Nombre de Curso
Licencia CC
Licencia CC
Resumen
Predator impacts on intertidal community structure have been studied for rocky platforms, but intertidal boulder fields, a habitat with a greater extension and heterogeneity, have not yet been considered. Keeping in mind that disturbances are considered an important force in determining intertidal habitat diversity, the aims of this work were to describe and quantify boulder field community structure and to assess boulder field community dynamics by proposing possible food webs, taking into consideration predatory and anthropogenic impacts. These aims were achieved by installing predator-exclusion cages outfitted with rocks that were monitored monthly over one year in two study zones, a Management and Exploitation Area for Benthic Resources (MEABR, Playa Chica) and open-access area (OAA, Playa Grande). For both study zones, juveniles were the dominant observed ontogenetic state and invertebrate richness and density were higher inside exclusion cages. Furthermore, the MEABR had a differentiated impact on community structure and dynamics in comparison with the OAA. In conclusion, the roles played by boulder fields in intertidal diversity, especially in recruitment and as a nursery zone, are important to consider in management plans.
Notas
Indexación: Web of Science; Scopus.
Palabras clave
ROCKY INTERTIDAL ZONE, SHALLOW SUBTIDAL BOULDERS, CENTRAL CHILE, COASTAL GEOMORPHOLOGY, SCARTICHTHYS-VIRIDIS, SPECIES-DIVERSITY, HABITAT STRUCTURE, PATCH SIZE, PATTERNS, DISTURBANCE
Citación
SCIENTIA MARINA, 80 (4):543-551