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Citation |
Ascensão F, Yogui D, Alves M, Medici EP, Desbiez A. J. Environ. Manage. 2019; 248: e109320. |
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Affiliation |
Instituto de Conservação de Animais Silvestres (ICAS), Rua Licuala 622, 79046150, Campo Grande, Mato Grosso do Sul, Brazil; IPÊ - Instituto de Pesquisas Ecológicas, Rodovia Dom Pedro I, km 47, 12960-000, Nazaré Paulista, São Paulo, Brazil; Royal Zoological Society of Scotland (RZSS), Murrayfield, Edinburgh, EH12 6TS, United Kingdom. |
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Copyright |
(Copyright © 2019, Elsevier Publishing) |
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DOI |
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PMID |
31376609 |
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Abstract |
We modelled the spatiotemporal patterns of road mortality for seven medium-large mammals, using a roadkill dataset from Mato Grosso do Sul, Brazil (800 km of roads surveyed every two weeks, for two years). We related roadkill presence-absence along the road sections (1000 m) and across the survey dates with a collection of environmental variables, including land cover, forest cover, distance to rivers, temperature, precipitation and vegetation productivity. We further included two variables aiming to reflect the intrinsic spatial and temporal roadkill risk. Environmental variables were obtained through remote sensing and weather stations, allowing the estimate of the roadkill risk for the entire surveyed roads and survey periods. Overall, the models could explain a small fraction of the spatiotemporal patterns of roadkills (<0.23), probably due to species being habitat generalists, but still had reasonable discrimination power (AUC averaging 0.70 ± 0.07). The intrinsic spatial and temporal roadkill risk were the most important variables, followed by land cover, climate and NDVI. We show that identifying spatiotemporal roadkill patterns may provide valuable information to define specific management actions focused on road sections and time periods, in complement to permanent road mitigation measures. Our approach thus offers a new insight into the understanding of road effects and how to plan and strategize monitoring and mitigation. Language: en |
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Keywords |
Conservation biology; Google earth engine; Road management; Road mitigation; Roadkill |