期刊
BIODIVERSITY AND CONSERVATION
卷 32, 期 4, 页码 1189-1204出版社
SPRINGER
DOI: 10.1007/s10531-023-02545-7
关键词
Conservation; Disturbance; Ecosystem engineering; Habitat quality; Resources; Zerynthia cassandra
Wild boar, through their rooting activity, can have positive effects on the habitat suitability of threatened butterflies, including foraging opportunities, host plant occurrence, and oviposition site selection. This suggests that wild boars may play a beneficial role in improving habitat quality and availability for endangered butterflies, highlighting the importance of studying their role as ecosystem engineers for species and habitat conservation.
Wild boar is among the most abundant ungulates in Europe and its spread is locally creating concerns as a major threat to biodiversity. However, through their rooting activity, wild boars could play an effective role in the creation of specific microhabitat resources for plants and animals. Here, we tested the hypothesis that wild boar affects the habitat suitability to threatened butterflies, by evaluating the influence of rooting on multiple key aspects of the biology and ecology of the Mediterranean endemic Zerynthia cassandra. Namely, we used Z. cassandra as a model to test the effects of wild boar rooting on adult foraging opportunities, host plant occurrence, and oviposition site selection. We found that herbaceous communities disturbed by wild boar rooting have a higher proportion of plants representing nectar resources for early-flying butterflies. We also discovered that wild boar rooting positively influences the occurrence and abundance of the larval host plant of Z. cassandra, as well as the butterfly site selection for egg-laying. Our results indicate that wild boars may locally prove beneficial to endangered butterflies by favoring habitat quality and availability, and their role as ecosystem engineers should thus be further investigated to improve species and habitat management and conservation actions.
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