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作者

来源

LANDSCAPE AND URBAN PLANNING,Vol.157,P.36-44

语言

英文

关键字

Road mortality; Hotspot; Road ecology; Seasonality; Survey planning; NEW-SOUTH-WALES; TOAD BUFO-BUFO; ROAD MORTALITY; VEHICLE COLLISIONS; SPATIAL-PATTERNS; NATIONAL-PARK; AGRICULTURAL LANDSCAPE; HIGHWAY MORTALITY; WESTERN POLAND; GENE FLOW

作者单位

[Garriga, Nuria; Franch, Marc; Santos, Xavier; Montori, Albert; Llorente, Gustavo A.] Univ Barcelona, Dept Biol Evolut Ecol & Ciencies Ambientals, Avgda Diagonal 643, E-08028 Barcelona, Spain. [Garriga, Nuria; Franch, Marc; Santos, Xavier; Montori, Albert; Llorente, Gustavo A.] Univ Barcelona, Inst Recerca Biodiversitat IRBio, Avgda Diagonal 643, E-08028 Barcelona, Spain. [Franch, Marc] CICGE, Observ Astron Prof Manuel de Barros, Alameda Monte da Virgem, P-4430146 Vila Nova De Gaia, Portugal. [Santos, Xavier] Univ Porto, CIBIO Cro Invest Biodiversidade & Recursos Genet, Campus Agr Vairao, P-4485661 Vairao, Portugal. Garriga, N (reprint author), Univ Barcelona, Dept Biol Evolut Ecol & Ciencies Ambientals, Avgda Diagonal 643, E-08028 Barcelona, Spain.; Garriga, N (reprint author), Univ Barcelona, Inst Recerca Biodiversitat IRBio, Avgda Diagonal 643, E-08028 Barcelona, Spain. E-Mail: ngarrigarovira@gmail.com; apoarmatu@gmail.com; xsantossantiro@gmail.com; amontori@ub.edu; gllorente@ub.edu

摘要

Wildlife mortality on roads is a global conservation problem. To implement a cost-effective programme of mitigation measures, it is essential to determine spatial and temporal patterns of traffic collisions. Identifying seasonal road-collision patterns could make it possible to schedule and optimize monitoring programmes. We evaluated seasonal variation in the roadkills of four vertebrate taxonomic groups (amphibians, reptiles, birds and mammals) across an environmental gradient in northeastern Iberia. Seven roads were monitored twice a month for one year and seasonal roadkill aggregations were examined using Poisson tests. Roadkill patterns were correlated with environmental variables using Generalized Linear Models. Amphibians were the group most commonly killed. Overall, the roadkill pattern was seasonal, and most roads showed seasonal peaks of casualties in autumn and spring. Roadkill peaks showed slightly seasonal differences between taxonomic groups. The total number of roadkill incidents was positively associated with temperature and negatively associated with solar irradiance. The road kill numbers by group were related to different environmental factors: amphibian roadkills increased with relative humidity, while this relationship was negative for birds; mammal roadkills were associated with temperature, and reptile roadkills correlated with precipitation, solar irradiance, and temperature. Our results suggest that roadkill rates in Catalonia are seasonal and mostly associated with several climatic factors, although they can vary depending on taxonomic group and environmental factors. Our results highlight the fact that an understanding of seasonal variation in roadkills is critical for optimizing monitoring programmes and temporary mitigation measures aimed at particular species or taxonomic groups. (C) 2016 Elsevier B.V. All rights reserved.