Avian-power line interactions in the Gobi Desert of Mongolia:are mitigation actions effective?  

作　　者：Adrian Orihuela-Torres Juan MPérez-García Zebensui Morales-Reyes Lara Naves-Alegre JoséASánchez-Zapata Esther Sebastián-González 

机构地区：[1]Área de Ecología,Departamento de Biología Aplicada,Universidad Miguel Hernández de Elche,Avda.Universidad s/n,03202 Elche,Alicante,Spain [2]Departamento de Ecología,Universidad de Alicante,Ctra.San Vicente del Raspeig s/n,03690 San Vicente del Raspeig,Alicante,Spain

出　　处：《Avian Research》2021年第3期382-390,共9页鸟类学研究（英文版）

基　　金：supported by Generalitat Valenciana(SEJI/2018/024).JMPG;ESG were supported by Spanish Ministry of Science,Innovation and Universities contracts(IJC-2019-038968 and RYC-2019-027216-I),ZMR;LNA by contracts cofunded by the Generalitat Valenciana and the European Social Fund(APOSTD/2019/016 and ACIF/2019/056,respectively).

摘　　要：Background:Electrocution and collisions on power lines are among the leading causes of non-natural mortality for birds.Power lines are exponentially increasing,particularly in developing countries,but mitigation strategies to prevent bird mortality are questionable.Mongolia combines a recently increased power line network,an abundant raptor population,a dangerous crossarm configuration and a habitat with no natural perches,producing many bird-power line interactions.Our aim is to assess the bird mortality caused by power lines in the Gobi Desert of Mongolia,to determine the factors increasing the risk of bird electrocution,and to evaluate the effectiveness of used retrofitting measures.Methods:In July 2019 we covered 132.9 km of 15 kV power lines checking 1092 poles.We also conducted bird tran-sects to record raptor and corvid richness and abundance,to assess species vulnerability to electrocution.Results:We recorded 76 electrocuted birds of 7 species.Electrocution rate was 6.96 birds/100 poles.The most affected species were Common Raven(Corvus corax)and Upland Buzzard(Buteo hemilasius),highlighting the electro-cution of 5 endangered Saker Falcons(Falco cherrug).By contrast,we only recorded 8 individuals of 5 species collid-ing with wires,the most affected being Pallas’s Sandgrouse(Syrrhaptes paradoxus).About 76.1%of sampled poles had some mitigation measure.Of these,96.6%were brush perch deflectors and 3.4%rotating-mirrors perch deter-rents.We found differences in electrocution rates among crossarm configurations,with the strain insulator with one jumper being the most lethal.Additionally,we found no correlation between bird abundance and electrocution rates,suggesting that some species are more sensitive to electrocution.Although no differences in total bird electrocu-tion rates were detected between poles with and without perch deterrents,when bird size is considered,deterrents reduced the mortality rate of small birds,while they were ineffective for medium-sized birds.Conclusions:Despite the widespread use

关 键 词：Collision Crossarm configuration ELECTROCUTION Electric infrastructures Perch deterrent Power line network RAPTOR 

分 类 号：Q958[生物学—动物学]