This study summarizes nearly 20 years (1997-2015) of tracking strandings of sea turtles along the Andalusian coast. In this period 2495 specimens were recorded, most of them loggerhead turtles Caretta caretta (92.6%) and leatherback turtles Demochelys coriacea (7.1%). Two other species were almost insinificant, green turtle Chelonia mydas (0.2%) and Kemp’s ridley Lepidochelys kempi (0.1%). Significant part of the turtles were recorded in the Atlantic coast, although in this area the incidence of alive specimens was low. Spring and summer were the seasons with more specimens stranded, probably related to warmer and more productive waters. The size of the loggerhead turtles observed highlights an important presence of inmature specimens in Andalusian waters, although mature individuals were not rare. In the case of leatherback turtles, adult stage is the only detected in the specimens recorded.These results, combined with the fact that the Atlantic coast has a large continental shelf and a high primary productivity near the coast, suggesting that the gulf of Cádiz may represent a neritic habitat used by the sea turtles. In this case, new and more effective politics of conservation are needed in order to protect sea turtles in this area.
Se analiza y cartografía, desde la perspectiva del análisis de la gestión del riesgo, la problemática de la aparición, cada vez más habitual, de enjambres de medusas en la Costa del Sol (Málaga, España). El análisis aborda una caracterización separada de los distintos componentes del riesgo. Por una parte, se estudia la peligrosidad utilizando como fuente la información obtenida a través de la App Infomedusa, que ofrece registros diarios de avistamientos registrados por los usuarios de la aplicación, y permite clasificar las playas en función de la frecuencia de aparición de medusas. Asimismo, se categoriza la exposición, esto es, la mayor o menor concentración de usuarios en las distintas playas. Finalmente, mediante indicadores obtenidos a partir de encuestas a los usuarios de las playas, se evalúa la vulnerabilidad frente a la afectación por medusas. Los resultados muestran diferentes niveles de gravedad: la mayor peligrosidad se observa en Málaga y Marbella, tramos de costa que también destacan en la exposición, al mismo nivel que Torrox. La vulnerabilidad es uniformemente alta pero con matices si se atiende los factores que la componen. Los resultados invitan a extender el análisis al resto del litoral para mejorar la gestión de este tipo de riesgo.
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