Observations on the natural history, present status, and conservation of the insular lizard Podarcis hispanica atrata on the Columbretes archipelago, Spain

Aurora M. Castilla, Dirk Bauwens

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Abstract

The world range of the lizard Podarcis hispanica atrata is retricted to the Columbretes archipelago in the Mediterranean. We examined its actual distribution, abundance and some aspects of its natural history. Lizards were found in four islets (combined area c. 20 ha). Densities on the largest islet (13 ha) are high (> 600 lizards/ha), at least in favourable habitats. Population sizes on the smaller islets are extremely small (< 200 individuals). A considerable number of juvenile lizards was found in all populations. We report new information on body length distribution, sexual dimorphism, tail break frequency, escape behaviour, and diet composition. Recommendations for the conservation of this lizard and the improvement of its habitat are given and discussed in relation to landscape management programmes.

Original languageEnglish
Pages (from-to)69-84
Number of pages16
JournalBiological Conservation
Volume58
Issue number1
DOIs
Publication statusPublished - 1991
Externally publishedYes

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ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Nature and Landscape Conservation

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