By the same authors

From the same journal

Modeling the occupancy of sympatric carnivorans in a Mediterranean ecosystem

Research output: Contribution to journalArticlepeer-review

Published copy (DOI)

Author(s)

  • Pedro Bernardo Sarmento
  • Joana Cruz
  • Catarina Eira
  • Carlos Fonseca

Department/unit(s)

Publication details

JournalEuropean Journal of Wildlife Research
DatePublished - 2011
Issue number1
Volume57
Number of pages13
Pages (from-to)119-131
Original languageEnglish

Abstract

Site occupancy provides a reasonable estimate of population status and trends, and it also provides an unbiased, cost-effective alternative method for large-scale, multispecies monitoring programs. In this study, we used camera-trapping data to determine carnivoran occupancy and associated environmental factors in Serra da Malcata Nature Reserve, Portugal. The study was intended as a precursor of further long-term multispecies monitoring programs. We estimated carnivoran species occupancy using a likelihood-based method, using the software PRESENCE. The major conclusions of the study were (1) fox occupancy tends to be independent of environmental factors; (2) stone marten occupancy is related with habitat variables, landscape structure, and preys; (3) common genet occupancy is related to broad leaf formations and preys; and (4) mongoose occupancy is higher in extensive areas of shrub habitats. Methodologically, we demonstrated the importance of modeling detection probabilities for species with low or variable detection rates. In the future, monitoring programs could benefit from incorporating estimates of detection probabilities into their design and analysis.

    Research areas

  • Camera trapping, Iberian carnivores, Occupancy rate, Site occupancy, Software PRESENCE

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