RT info:eu-repo/semantics/article
T1 Bird communities in two oceanic island forests fragmented by roads on Tenerife, Canary Islands
A1 Delgado, Juan Domingo
A1 Fernández-Palacios, José María
A1 Arévalo, José Ramón
AB Although most studies on road effects on birds have been conducted on continental grounds, road fragmentation on oceanicislands is often heavier. We assessed variation in bird communities near (≤25 m) and far (>100 m) from forest roads dividinglaurel and pine forests on Tenerife, Canary Islands. Line transects were used as the census technique. We comparedcommunity structure and species responses between both forests, and among forest interior and edges of paved andunpaved roads. We analysed richness and diversity of species in these different situations, and tested for significance inbird community descriptors and species abundance responses to road proximity. The bird community of the laurel forestshowed significantly higher average population density, richness, diversity and evenness than that of the pine forest. Noneof the two forests showed significant differences in community descriptors between edge and interior, except for a higherevenness along unpaved roads in the laurel forest. However, the bird community showed more overall abundances, richnessand diversity on unpaved than on asphalt road edges in laurel forest. Excepting two passerines (Turdus merula in laurelforest and Phylloscopus canariensis in pine forest), all species had similar abundances on road edges and forest interiorregardless of forest type. Most species might be regarded as forest generalists. Changes detected between edge and interioron road-fragmented forests were, overall, small at the bird community level. Managers should consider the effects of roadedge and road type on the more sensitive species in present and future road planning.
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DS Repositorio institucional de la Universidad de La Laguna
RD 24-nov-2024