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espanolScurria scurra es un patelogastropodo que habita los estipes y cavidades de discos adhesivos del complejo de especies Lessonia nigrescens formando una asociacion herbivoro-alga altamente especializada. En el norte de Chile, se ha propuesto que la explotacion de praderas de Lessonia berteroana es una perturbacion que afecta la asociacion Scurria-Lessonia de manera similar que los eventos ENOS (El Nino-Oscilacion del Sur). Considerando lo anterior, y el importante rol ecologico que cumplen las algas pardas como especies fundacionales, este estudio propone el uso de la asociacion Scurria-Lessonia como un indicador ecologico para monitorear la integridad de praderas explotadas de L. berteroana. Se evaluo la abundancia y estructura de talla de S. scurra en plantas de L. berteroana bajo 3 distintos tipos de estrategias de conservacion de recursos pesqueros: areas de libre acceso y areas de manejo (con cosecha), y areas marinas protegidas (sin cosecha) en Atacama y Coquimbo (26-32°S). Ademas, se monitoreo el tiempo de recuperacion post cosecha de la asociacion Scurria-Lessonia en un sitio experimental (Lagunillas, 30°S). Los resultados muestran que en areas de libre acceso la poblacion de Scurria esta dominada por juveniles en bajas abundancias, situacion no detectada en areas de manejo y areas marinas protegidas. Mas aun, la recuperacion de S. scurra post cosecha de Lessonia en el sitio experimental demoro mas de 2 anos (30 meses). Se propone un indicador para validar las acciones del plan de manejo de algas pardas para areas de libre acceso a la pesqueria. Este indicador ecologico es facil de observar, evaluar y difundir entre los usuarios de la cadena productiva del recurso huiro negro. EnglishScurria scurra is a patelogastropod inhabiting the stipes and holdfasts cavities of Lessonia nigrescens complex species forming a herbivore-kelp association highly specialized. It has been proposed that the exploitation of kelp beds of Lessonia berteroana in northern Chile is a disturbance that affects Scurria-Lessonia association such as ENSO (El Nino-Southern Oscillation) events. Considering the above, and the important ecological role that have kelps as foundation species, this study proposes the use of Scurria-Lessonia association as an ecological indicator to monitor the integrity of kelp beds of L. berteroana. To achieve this, the abundance and size structure of S. scurra in plants of L. berteroana was evaluated under 3 different types of conservation strategies of fishing resources: open access areas and management areas (with harvest), and marine protected areas (without harvest) in the Region of Atacama and Region of Coquimbo, Chile. In addition, we monitored the time of recovery post-harvest of Scurria-Lessonia association in an experimental site (Lagunillas, 30°S). The results show that S. scurra population in open access areas is dominated by juveniles in low abundances, a situation not detected in management areas and marine protected areas. Furthermore, the recovery of S. scurra post-harvest of Lessonia at the experimental site took more than 2 years (30 months). An indicator was proposed to validate the actions of management plan of brown algae for open access areas to fisheries. This ecological indicator is easy to observe, evaluate and disseminate among users of the productive chain of Chilean kelp resource.

revista de biología marina y oceanografía

Asociación Scurria-Lessonia, indicador de integridad ecológica en praderas explotadas de huiro negro Lessonia berteroana (ex L. nigrescens) en el norte de Chile