Clara Grilo , Thálita de Resende Cardoso , Ricardo Solar , Alex Bager
{"title":"Do the size and shape of spatial units jeopardize the road mortality-risk factors estimates?","authors":"Clara Grilo , Thálita de Resende Cardoso , Ricardo Solar , Alex Bager","doi":"10.1016/j.ncon.2016.01.001","DOIUrl":null,"url":null,"abstract":"<div><p>We aimed to evaluate the role of spatial units with different shapes and sizes on road-kill modeling for small vertebrate species. We used the road-kill records of two reptiles, water snake (<em>Helicops infrataeniatus</em>) and D’Orbigny's slider turtle (<em>Trachemys dorbigni</em>), and three mammals, white-eared opossum (<em>Didelphis albiventris</em>), coypu (<em>Myocastor coypus</em>) and Molina's Hog-nosed skunk (<em>Conepatus chinga</em>). Hierarchical partitioning was used to evaluate the independent influence of different land-use classes on road-kill by varying the shape and size of the spatial units. Variables that most explained road-kill were consistent over the different spatial unit types. The standard size seemed to be a reasonable solution for these species. Prior analysis with several sizes and shapes is needed to identify the appropriate spatial unit to model road-kill occurrence for larger vertebrates with different history traits.</p></div>","PeriodicalId":49776,"journal":{"name":"Natureza & Conservacao","volume":"14 1","pages":"Pages 8-13"},"PeriodicalIF":0.0000,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ncon.2016.01.001","citationCount":"10","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Natureza & Conservacao","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1679007316000049","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 10
Abstract
We aimed to evaluate the role of spatial units with different shapes and sizes on road-kill modeling for small vertebrate species. We used the road-kill records of two reptiles, water snake (Helicops infrataeniatus) and D’Orbigny's slider turtle (Trachemys dorbigni), and three mammals, white-eared opossum (Didelphis albiventris), coypu (Myocastor coypus) and Molina's Hog-nosed skunk (Conepatus chinga). Hierarchical partitioning was used to evaluate the independent influence of different land-use classes on road-kill by varying the shape and size of the spatial units. Variables that most explained road-kill were consistent over the different spatial unit types. The standard size seemed to be a reasonable solution for these species. Prior analysis with several sizes and shapes is needed to identify the appropriate spatial unit to model road-kill occurrence for larger vertebrates with different history traits.
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