Seasonal population structure of the sea star Anasterias antarctica in intertidal boulders of the Protected Natural Area Puerto Lobos, Atlantic Patagonia
Palabras clave:
Asteroidea, Intertidal boulder fields, Environmental variables, Puerto Lobos Protected Natural Area, PatagoniaResumen
Intertidal boulders are complex marine environments which support unique marine assemblages, including species generally restricted to tide-pools, and also characteristics which make them ideal for experimental studies to further understanding ecological patterns. The goals of this study were to describe the seasonal population structure of the sea star Anasterias antarctica over two years and test the effects of environmental conditions over sea stars population in intertidal boulders of the Protected Natural Area Puerto Lobos in San Matías Gulf, Atlantic Patagonia. Our results showed seasonal differences in biomass and size of A. antarctica population over the two years sampled, although not significant relation was observed due to environmental conditions measured. To better understand A. antarctica population structure in the intertidal boulder fields of Puerto Lobos area more environmental variables need to be measured, as well as carrying out specific sampling to detect the smallest sizes of sea stars after the release of juveniles. These findings underscore the necessity of incorporating seasonal dynamics into monitoring programs for species that play key roles in communities, enabling us to detect potential changes driven by anthropogenic pressure or climate change, highlighting the importance of the study of these unique and poorly known rocky environments in Atlantic Patagonia.
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Biografía del autor/a
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Lorena Pilar Arribas, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"
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Martín Ignacio Brogger, Instituto de Biología de Organismos Marinos (IBIOMAR-CONICET)Laboratorio de reproducción y biología integrativa de invertebrados marinos, Investigador adjunto.
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Ariana Belén Alarcón Saavedra, Instituto de Biología de Organismos Marinos (IBIOMAR-CONICET)Laboratorio de reproducción y biología integrativa de invertebrados marinos, Becaria doctoral.
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Sol Aylén Rebolledo, Universidad Nacional de la Patagonia San Juan BoscoUniversidad Nacional de la Patagonia San Juan Bosco, Estudiante de Licenciatura
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José Elías Fernandéz Alfaya, Instituto de Biología de Organismos Marinos (IBIOMAR-CONICET) Universidad Nacional de la Patagonia “San Juan Bosco”-Sede Puerto Madryn
Laboratorio de reproducción y biología integrativa de invertebrados marinos, Investigador asistente.
Universidad Nacional de la Patagonia San Juan Bosco, Jefe de trabajos prácticos
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Gregorio Bigatti, Instituto de Biología de Organismos Marinos (IBIOMAR-CONICET) Universidad Nacional de la Patagonia “San Juan Bosco”-Sede Puerto Madryn
Laboratorio de reproducción y biología integrativa de invertebrados marinos, Investigador principal.
Universidad Nacional de la Patagonia San Juan Bosco, Profesor adjunto
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