דלג לתוכן
חזרה

Artificial refuges as a pilot measure in the long-term monitoring squamates reptiles in Doñana

March 2022

In the Natural Area of Doñana coexist 24 reptile species (20 Squametes and 4 Testudines) of which four species are Iberian endemism and one invasive species).  The monitoring of the reptile community in Doñana was initiated in 2003 with the aim to collect information about distribution and abundance of reptile, both in space and time. The sampling method used consists in recording all the individuals observed in seven transects in different types of habitats (dunes and mediterranean vegetation). The reptile census are performed three times during the year, in the months of greatest activity of the reptiles (March-June and September-October). In these samplings, usually lizards and geckos can be recorded sunbathing outside of the vegetation and around footbriges. However, skink, snake or adder species require another sampling methodology which consist in looking under their natural refugies and there are low observations. Normally, these reptiles hide under big stones, but since there are not stones in Doñana, they use the vegetation, burrows or logs and is more difficult detect them.

Because of the low number of observations of this group of reptiles, the Monitoring Team of the Doñana Natural Processes designed a pilot study in spring 2021 to enhance the visibility of individuals by incorporating artificial refuges. The study consists of the inclusion of wood planks of maritime pine and odulines, which integrate well in nature and are good insolation for reptiles. Refuges used were of two types of dimensions (80x60 cm for the small ones and 60x120 cm for the large ones; cover photo by Rosa Arribas). Refugies were placed in 4 sites of Doñana Reserve. Two field technicians will sample the refuges at least once by month. Number of individuals by species and other organims present in the refuge or surrroundings are recorded.

During the first samplings in 2021, it has been observed several individuals of Bedriaga’s skink (Chalcides bedriagai) and Common wall gecko (Tarentola mauritanica). Potential reptile preys as small mammals, amphibians and scorpions were also observed. However, not snakes or adders were found. This year in February we have recorded one Carbonell’s wall lizard (Podarcis  carbonelli, photo by Rosa Arribas) endemic of the Iberian Peninsula. The study will take two years, in which we could have enough data to determine the use of the refuges and discuss about the efficiency of this measure to improve the long-term  monitoring of the distribution and abudance of reptiles in Doñana. 



 

Comienza un proyecto

Si planeas investigar en Doñana, debes tener en cuenta que tu proyecto debe ser aprobado por la Comisión de Trabajo de Investigación del Consejo de Participación del END (Comité de Acceso). La ICTS-RBD brinda asistencia durante todo el procedimiento. Leer más

Solicita acceso, alojamiento y/o apoyo técnico y logístico

Una vez que tu proyecto de investigación haya sido aprobado, puedes solicitar acceso y alojamiento en la Reserva Biológica de Doñana, así como apoyo técnico y logístico. No te olvides de leer detenidamente las normas de uso. Leer más

Solicita datos de biodiversidad

Puedes visualizar datos de seguimiento de la ICTS-RBD a través de nuestra Infraestructura de datos y consultar indicadores ecosistémicos esenciales derivados de dichos datos en nuestro Observatorio para el Cambio Global. Los datos brutos se ofrecen libres de cargos a proyectos de investigación competitivos, sujetos a los términos de uso incluidos en este formulario de solicitud de datos

Oficina de Anillamiento

La Oficina de Anillamiento es un servicio de la ICTS-RBD que centraliza todas las tareas de anillamiento científico realizadas en Doñana y coordina el marcaje no metálico en España. Leer más

Densidad de alcornoques

Mapa que muestra la densidad de alcornoques de la Reserva Biológica de Doñana


Estaciones de Campo

Localización de los recursos ICTS para la captura de datos automáticos.