Monitoring arthropods under the scope of LIFE-BEETLES project – Part 2

Résumé fourni par la source

The presented database is part of the LIFE BEETLES project which aims to conserve three species of endemic beetles that are not protected by the Habitats Directive: Tarphius floresensis Borges & Serrano, 2017, Pseudanchomenus aptinoides (Tarnier, 1860), and Trechus terrabravensis Borges, Serrano & Amorim, 2004. These species are single island endemics respectively from Flores, Pico, and Terceira. They are threatened by environmental degradation, facing the dual challenge of restricted distribution and habitat degradation.The data are the continuation of an established and comprehensive long-term arthropod monitoring survey using SLAM (Sea, Land, Air, Malaise) traps aiming to assess the overall habitat quality with arthropods as principal indicators.Since March 2020 until December 2025, a total of 31 SLAM traps were monitored. The traps were set up as follows: seven in Flores (three in mixed forest and four in native forest), 10 in Pico Island (four in mixed forest and six in native forest), and 14 in Terceira (three in mixed forest and 11 in native forest). Target monitoring duration were 90 days (three months, one season), however, due to technical and weather constraints, some traps were sometimes monitored every six months.A total of 356 arthropod taxa were recorded, with 273 identified at the species or subspecies level. Out of the 273 identified taxa, 45 were endemic, 74 were native non-endemic, 117 were introduced, and 37 were indeterminate. Habitat information is also provided, including general habitat and dominant species composition. This dataset contributes to the continuation of the conservation monitoring of highly threatened endemic beetles by assessing habitat quality based on arthropod communities and habitat description (e.g. native or exotic vegetation). Additionally, it provides an updated inventory of arthropods from Pico, Terceira, and Flores islands

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