Trophic niche changes associated with the eradication of invasive mammals in an insular lizard: an assessment using isotopes
作者机构：Faculty of SciencesCentre for EcologyEvolution and Environmental ChangesUniversity of LisbonLisbon1749-016Portugal CIBI0-lnBI0Research Center in Biodiversity and Genetic ResourcesUniversity of PortoVairao4485-661Portugal CIBI0-lnBI0Research Center in Biodiversity and Genetic ResourcesInstitute of AgronomyUniversity of LisbonLisbon1349-017Portugal Sociedade Portuguesa Para o Estudo das AvesAv.Columbano Bordalo Pinheiro873°AndarLisboa1070-062Portugal
出 版 物：《Current Zoology》 (动物学报（英文版）)
年 卷 期：2022年第68卷第2期
页 面：211-219页
核心收录：
学科分类：0710[理学-生物学] 07[理学] 071002[理学-动物学]
基 金：Funding was provided by the Portuguese Foundation for Science and Technology to R.Rebelo(UID/BIA/00329/2019) M.Mota-Ferreira(SFRH/BD/95202/2013) ARDITI-Madeira's Regional Agency for the Development of Research,Technology and Innovation to R.Rocha(M1420-09-5369-FSE-000002) the LIFE+Berlengas project.M.Mota-Ferreira was also supported by the Interreg Europe project INVALIS-Protecting European Biodiversity from Invasive Alien Species(PGI05271)
主 题：food-webs invasive species eradication Oryctolagus cuniculus Podarcis carbonelli berlengensis Rattus rattus
摘 要：Invasive species are a major threat to island biodiversity,and their eradications have substantially contributed to the conservation of island ***,the consequences of eradications on the trophic ecology of native taxa are largely ***,we used the eradication of invasive black rats Rattus rattus and European rabbits Oryctolagus cuniculus from the Berlenga Island,in the western coast of Portugal,as a whole-ecosystem experiment to investigate the effects of the eradication of invasive mammals on the trophic niche and body dimensions of the island-restricted Berlenga wall lizard Podarcis carbonelli berlengensis over a 2-year *** results suggest an expansion of the isotopic niche and an intensification of the sexual dimorphism of the lizard following mammal ***,we found considerable variability in isotopic niche across the island and detected evidence of sex-specific and season-modulated nutritional requirements of this threatened *** findings support that the eradication of 2 of the planets most problematic invasive vertebrates led to changes in the lizard trophic niche and sexual dimorphism in just 2 *** suggests that the ecological pressuresfor example,prey availability and habitat structureto which lizards are exposed have substantially changed *** study emphasizes the scientific value of island eradications as experiments to address a wide range of ecological questions and adds to the increasing body of evidence supporting substantial conservation gains associated with these restoration interventions.
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