Habitat suitability vs landscape connectivity determining roadkill risk at a regional scale: a case study on European badger (Meles meles)


Collisions between wildlife and vehicles represent the main conflict between infrastructures and ecosystems. Road mortality is the largest single cause of death for many vertebrates, representing a growing phenomenon of remarkable dimension. Most studies in road ecology investigated spatial roadkill patterns, showing that roadkill probability is often higher near optimal habitat for a large amount of species. Landscape connectivity has been less often considered in roadkill research, and only few studies considered habitat suitability and landscape connectivity at the same time. The purpose of the present study was to evaluate the relative importance of habitat suitability and landscape connectivity in determining roadkill risk for a habitat-generalist carnivore, namely, the Eurasian badger in the Abruzzo region (Central Italy). We collected occurrence data of living individuals from camera trapping and roadkill data of through a Citizen Science initiative. We used the occurrence data to produce a habitat suitability model (HSM) and a landscape connectivity model (LCM). Both HSM and LCM were then used as predictors in combination with road characteristics to fit a roadkill risk model. We found that landscape connectivity was more important than habitat suitability in determining roadkill risk for the Eurasian badger. Overall, the density of regional roads was the most important variable. Our finding highlighted how important is to consider landscape connectivity in planning mitigation measures aimed to preserve habitat-generalist species.

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  1. Allouche O, Tsoar A, Kadmon R (2006) Assessing the accuracy of species distribution models: prevalence, kappa and the true skill statistic (TSS). J Appl Ecol 43:1223–1232

  2. Anderson MG, Clark M, Sheldon AO (2014) Estimating climate resilience for conservation across geophysical settings. Conserv Biol 28:959–970

  3. Balestrieri A, Remonti L, Prigioni C (2009) Habitat selection in a low-density badger Meles meles population: a comparison of radio-tracking and latrine surveys. Wildl Biol 15:442–448

  4. Balestrieri A, Cardarelli E, Pandini M, Remonti L, Saino N, Prigioni C (2016) Spatial organisation of European badger (Meles meles) in northern Italy as assessed by camera-trapping. Eur J Wildl Res 62

  5. Barbet-Massin M, Thuiller W, Jiguet F (2010) How much do we overestimate future local extinction rates when restricting the range of occurrence data in climate suitability models? Ecography 33:878–886

  6. Barbet-Massin M, Jiguet F, Albert CH, Thuiller W (2012) Selecting pseudo-absences for species distribution models: how, where and how many? Methods Ecol Evol 3:327–338

  7. Biancardi C, Rigo V, Azzolini S, Gnoli C (2014) Eurasian badger (Meles meles) habitat and sett site selection in the northern Apennines. Nat Hist Sci 1:41–48

  8. Boitani L, Falcucci A, Maiorano L, Montemaggiori A (2002) Rete Ecologica Nazionale: il Ruolo delle Aree Protette nella Conservazione dei Vertebrati. Dip. B.A.U. Università di Roma “La Sapienza”, Dir. Conservazione della Natura - Ministero dell’Ambiente e della Tutela del Territorio, Istituto di Ecologia Applicata, Roma

  9. Boitani L., Lovari S., Vigna Taglianti A. (2004) Fauna d’Italia. Mammalia III. Carnivora – Artiodactyla. Edizioni Calderini, Bologna

  10. Boitani L, Maiorano L, Baisero D, Falcucci A, Visconti P, Rondinini C (2011) What spatial data do we need to develop global mammal conservation strategies? Philos Trans R Soc Lond Ser B Biol Sci 366:2623–2632

  11. Borda-de-Agua L, Grilo C, Pereira HM (2014) Modeling the impact of road mortality on barn owl (Tyto alba) populations using age-structured models. Ecol Model 276:29–37

  12. Chiatante G, Dondina O, Lucchelli M, Bani L, Meriggi A (2017) Habitat selection of European badger Meles meles in a highly fragmented forest landscape in northern Italy: the importance of hedgerows and agro-forestry systems. Hystrix 28:247–252

  13. Clarke GP, White PC, Harris S (1998) Effects of roads on badger Meles meles populations in south-west England. Biol Conserv 86:117–124

  14. Coffin AW (2007) From roadkill to road ecology: a review of the ecological effects of roads. J Transp Geogr 15:396–406

  15. Conover MR, Pitt WC, Kessler KK, DuBow TJ, Sanborn WA (1995) Review of human injuries, illnesses, and economic losses caused by wildlife in the United States. Wildl Soc Bull 23:407–414

  16. D’Amico M, Román J, de los Reyes L, Revilla E (2015) Vertebrate road-kill patterns in Mediterranean habitats: who, when and where. Biol Conserv 191:234–242

  17. D’Amico M, Ascensão F, Fabrizio M, Barrientos R, Gortázar C (2018) Twenty years of road ecology: a topical collection looking forward for new perspectives. Eur J Wildl Res 64

  18. De Marinis M, Genovesi P, Spagnesi M (2002) Tasso Meles meles (Linnaeus, 1758). In: Spagnesi M, De Marinis M (eds) Mammiferi d’Italia. Quaderni di Conservazione della Natura

  19. Di Febbraro M, Roscioni F, Frate L, Carranza ML, De Lisio L, De Rosa D, Marchetti M, Loy A (2015) Long-term effects of traditional and conservation-oriented forest management on the distribution of vertebrates in Mediterranean forests: a hierarchical hybrid modelling approach. Divers Distrib 21:1141–1154

  20. Di Febbraro M., Martinoli A., Russo D., Preatoni D., Bertolino S. (2016) Modelling the effects of climate change on the risk of invasion by alien squirrels. Hystrix online ver, pp 1–8

  21. Dondina O, Orioli V, Chiatante G, Meriggi A, Bani L (2018) Species specialization limits movement ability and shapes ecological networks: the case study of 2 forest mammals. Curr Zool 71:442–448

  22. Fahrig L, Pedlar JH, Pope SE, Taylor PD, Wegner JF (1995) Effect of road traffic on amphibian density. Biol Conserv 73:177–182

  23. Forman RTT, Alexander LE (1998) Roads and their major ecological effects. Annu Rev Ecol Syst 29:207–231

  24. Forman RTT, Sperling D, Bissonette JA, Clevenger AP, Cutshall CD, Dale VH, Fahrig L, France R, Goldman CR, Heanue K, Jones JA, Swanson FJ, Turrentine T, Winter TC (2003) Road ecology. Science and Solutions. Island Press, Washington, D.C.

  25. Frantz AC, Pope LC, Etherington TR, Wilson GJ, Burke T (2010) Using isolation-by-distance-based approaches to assess the barrier effect of linear landscape elements on badger (Meles meles) dispersal. Mol Ecol 19:1663–1674

  26. Gallien L, Douzet R, Pratte S, Zimmermann NE, Thuiller W (2012) Invasive species distribution models - how violating the equilibrium assumption can create new insights. Glob Ecol Biogeogr 21:1126–1136

  27. Gaughran A, Kelly DJ, MacWhite T, Mullen E, Maher P, Good M, Marples NM (2018) Super-ranging. A new ranging strategy in European badgers. PLoS One 13:e0191818

  28. Girardet X, Conruyt-Rogeon G, Foltête J-C (2015) Does regional landscape connectivity influence the location of roe deer roadkill hotspots? Eur J Wildl Res 61:731–742

  29. González-Gallina A, Benítez-Badillo G, Rojas-Soto OR, Hidalgo-Mihart MG (2013) The small, the forgotten and the dead: highway impact on vertebrates and its implications for mitigation strategies. Biodivers Conserv 22:325–342

  30. Grilo C, Bissonette J, Santos-Reis M (2009) Spatial-temporal patterns in Mediterranean carnivore road casualties: consequences for mitigation. Biol Conserv 142:301–313

  31. Grilo C, Ascensão F, Santos-Reis M, Bissonette JA (2011) Do well-connected landscapes promote road-related mortality? Eur J Wildl Res 57:707–716

  32. Guisan A, Petitpierre B, Broennimann O, Daehler C, Kueffer C (2014) Unifying niche shift studies: insights from biological invasions. Trends Ecol Evol 29:1–10

  33. Hanley JA, McNeil BJ (1982) The meaning and use of the area under a receiver operating characteristic (ROC) curve. Radiology 143:29–36

  34. Ibisch PL, Hoffmann MT, Kreft S, Pe’er G, Kati V, Biber-Freudenberger L, Della Sala DA, Vale MM, Hobson PR, Selva N (2016) A global map of roadless areas and their conservation status. Science 354:1423–1427

  35. Jaarsma R, van Langevelde F, Bavecoc JM, van Eupenc M, Ariszb J (2007) Model for rural transportation planning considering simulating mobility and traffic kills in the badger Meles meles. Ecol Inf 2:73–82

  36. Jaeger JAG, Bowman J, Brennan J, Fahrig L, Bert D, Bouchard J, Charbonneau N, Frank K, Grube B, von Toschanowitz KT (2005) Predicting when animal populations are at risk from roads: an interactive model of road avoidance behavior. Ecol Model 185:329–348

  37. Kang W, Minor ES, Woo D, Lee D, Park C-R (2016) Forest mammal roadkills as related to habitat connectivity in protected areas. Biodivers Conserv 25:2673–2686

  38. Kauhala K, Holmala K (2011) Landscape features, home-range size and density of northern badgers (Meles meles). Ann Zool Fenn 48:221–232 Retrieved from

  39. Koen EL, Bowman J, Sadowski C, Walpole AA (2014) Landscape connectivity for wildlife: development and validation of multispecies linkage maps. Methods Ecol Evol 5:626–633

  40. Kranz A., Abramov A.V., Herrero J., Maran T. (2016) Meles meles. The IUCN Red List of Threatened Species 2016: e.T29673A45203002

  41. Kruuk H (1989) The social badger: ecology and behaviour of a group-living carnivore (Meles meles). Oxford University Press, Oxford

  42. Landis JR, Koch GG (1977) The measurement of observer agreement for categorical data. Biometrics 33:159–174

  43. Litvaitis JA, Tash JP (2008) An approach toward understanding wildlife-vehicle collisions. Environ Manag 42:688–697

  44. Lomba A, Pellissier L, Randin C, Vicente J, Moreira F, Honrado J, Guisan A (2010) Overcoming the rare species modelling paradox: a novel hierarchical framework applied to an Iberian endemic plant. Biol Conserv 143:2647–2657

  45. Marmion M, Parviainen M, Luoto M, Heikkinen RK, Thuiller W (2009) Evaluation of consensus methods in predictive species distribution modelling. Divers Distrib 15:59–69

  46. Mateo-Sánchez MC, Gastón A, Ciudad C et al (2015) Seasonal and temporal changes in species use of the landscape: how do they impact the inferences from multi-scale habitat modeling? Landsc Ecol 31:1261

  47. McClure ML, Hansen AJ, Inman RM (2016) Connecting models to movements: testing connectivity model predictions against empirical migration and dispersal data. Landsc Ecol 31:1419–1432

  48. McRae BH, Dickson BG, Keitt TH, Shah VB (2008) Using circuit theory to model connectivity in ecology, evolution, and conservation. Ecology 89:2712–2724

  49. Molina-Vacas G, Bonet-Arbolí V, Rafart-Plaza E, Rodríguez-Teijeiro JD (2009) Spatial ecology of the European badgers (Meles meles) in Mediterranean habitats of the north-eastern Iberian Peninsula. I: home range size, spatial distribution and social organization. Vie et Milieu — Life Environment 59:223–232

  50. Mumme RL, Schoech SJ, Woolfenden GE, Fitzpatrick JW (2000) Life and death in the fast lane: demographic consequences of road mortality in the Florida scrub-jay. Conserv Biol 14:501–512

  51. Newton-Cross G, White PCL, Harris S (2007) Modelling the distribution of badgers Meles meles: comparing predictions from field-based and remotely derived habitat data. Mammal Rev 37:54–70

  52. Pearson RG, Dawson T, Liu C (2004) Modelling species distributions in Britain: a hierarchical integration of climate and land-cover data. Ecography 3:285–298

  53. Pelletier D, Clark M, Anderson MG, Rayfield B, Wulder MA, Cardille JA (2014) Applying circuit theory for corridor expansion and management at regional scales: tiling, pinch points, and omnidirectional connectivity. PLoS One 9:e84135

  54. Phillips SJ, Anderson RP, Schapire RE (2006) Maximum entropy modeling of species geographic distributions. Ecol Model 190:231–259

  55. Prigioni C, Deflorian MC (2005) Sett site selection by the Eurasian badger (Meles meles) in an Italian Alpine area. Ital J Zool 72:43–48

  56. Prigioni C, Balestrieri A, Remonti L, Cavada L (2008) Differential use of food and habitat by sympatric carnivores in the eastern Italian Alps. Ital J Zool 75:173–184

  57. Raes N (2012) Partial versus full species distribution models. Nat Conserv 10:127–138

  58. Ramesh V, Gopalakrishna T, Barve S, Melnick DJ (2017) Citizen science driven species distribution models estimate drastically smaller range sizes and higher threat levels for Western Ghats endemic birds. Biol Conserv 210:205–221

  59. Reed GC, Litvaitis JA, Callahan C, Carroll RP, Litvaitis MK, Broman DJA (2017) Modeling landscape connectivity for bobcats using expert-opinion and empirically derived models: how well do they work? Anim Conserv 20:308–320

  60. Requena-Mullor JM, López E, Castro AJ, Cabello J, Virgós E, González-Miras E, Castro H (2014) Modeling spatial distribution of European badger in arid landscapes: an ecosystem functioning approach. Landsc Ecol 29:843–855

  61. Requena-Mullor JM, López E, Castro AJ, Alcaraz-Segura D, Castro H, Reyes A, Cabello J (2017) Remote-sensing based approach to forecast habitat quality under climate change scenarios. PloS One

  62. Revilla E, Palomares F, Delibes M (2001) Edge-core effects and the effectiveness of traditional reserves in conservation: Eurasian badgers in Doñana National Park. Conserv Biol 15:148–158

  63. Roger E, Bino G, Ramp D (2012) Linking habitat suitability and road mortalities across geographic ranges. Landsc Ecol 27:1167–1181

  64. Rondinini C, Battistoni A, Peronace V, Teofili C (2013) Meles meles. Lista Rossa IUCN dei Vertebrati Italiani. Comitato Italiano IUCN e Ministero dell’Ambiente e della Tutela del Territorio e del Mare, Roma

  65. Roscioni F, Rebelo H, Russo D, Carranza ML, Di Febbraro M, Loy A (2014) A modelling approach to infer the effects of wind farms on landscape connectivity for bats. Landsc Ecol 29(5):891–903

  66. Sala OE, Stuart Chapin IIIF, Armesto JJ, Berlow E, Bloomfield J, Dirzo R, Huber-Sanwald E, Huenneke LF, Jackson RB, Kinzig A, Leemans R, Lodge DM, Mooney HA, Oesterheld M, Poff NLR, Sykes MT, Walker BH, Walker M, Wall DH (2000) Global biodiversity scenarios for the year 2100. Science 287:1770–1774

  67. Sanderson EW, Jaiteh M, Levy MA, Redford KH, Wannebo AV, Woolmer G (2002) The human footprint and the last of the wild. Bioscience 52:891–904

  68. Santos S. M., Lourenço R., Mira A., Beja P. (2013). Relative effects of road risk, habitat suitability, and connectivity on wildlife roadkills: the case of tawny owls Strix aluco. PLOS ONE 8 [online]

  69. Santos MJ, Rosalino LM, Santos-Reis M, Ustin SL (2016) Testing remotely-sensed predictors of meso-carnivore habitat use in Mediterranean ecosystems. Landsc Ecol 31:1763–1780

  70. Seiler A (2005) Predicting locations of moose-vehicle collisions in Sweden. J Appl Ecol 42:371–382

  71. Seiler A, Helldin JO, Seiler C (2004) Road mortality in Swedish mammals: results of a drivers’ questionnaire. Wildl Biol 10:225–233

  72. Sinclair ARE, Byrom AE (2006) Understanding ecosystem dynamics for conservation of biota. J Anim Ecol 75:64–79

  73. Spinozzi F, Battisti C, Bologna MA (2012) Habitat fragmentation sensitivity in mammals: a target selection for landscape planning comparing two different approaches (bibliographic review and expert based). Rend Fis Acc Lincei 23:365–373

  74. Swets JA (1988) Measuring the accuracy of diagnostic systems. Science 240:1285–1293

  75. Taylor PD, Fahrig L, Henein K, Merriam G (1993) Connectivity is a vital element of landscape structure. Oikos 68:571–573

  76. Thuiller W, Lafourcade B, Engler R, Araújo MB (2009) BIOMOD - a platform for ensemble forecasting of species distribution. Ecography 32:369–373

  77. Tiago P, Pereira HM, Capiñha C (2017) Using citizen science data to estimate climatic niches and species distributions. Basic Appl Ecol 20:75–85

  78. van der Ree R, Smith DJ, Grilo C (2015) Handbook of road ecology. John Wiley & Sons, Oxford

  79. van Langevelde F, van Dooremalen C, Jaarsma CF (2009) Traffic mortality and the role of minor roads. J Environ Manag 90:660–667

  80. van Strien AJ, van Swaay CAM, Termaat T (2013) Opportunistic citizen science data of animal species produce reliable estimates of distribution trends if analysed with occupancy models. J Appl Ecol 50:1450–1458

  81. Virgós E, Revilla E, Mangas JC, Roura D (2005) Ecología y conservación del tejón en ecosistemas mediterráneos. Sociedad Española para la Conservación y Estudio de los Mamíferos SECEM

  82. Visintin C, van der Ree R, McCarthy MA (2016) A simple framework for a complex problem? Predicting wildlife-vehicle collisions. Ecol Evol 6:6409–6421

  83. Wilson MFJ, O’Connell B, Brown C, Guinan JC, Grehan AJ (2007) Multiscale terrain analysis of multibeam bathymetry data for habitat mapping on the continental slope. Mar Geod 30:3–35

  84. Zuur AF, Ieno EN, Elphick CS (2010) A protocol for data exploration to avoid common statistical problems. Methods Ecol Evol 1:3–14

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We thank Majella National Park, Monte Genzana Alto Gizio Nature Reserve, Zompo Lo Schioppo Nature Reserve, Calanchi di Atri Nature Reserve, Castel Cerreto Nature Reserve, Cascate del Verde Nature Reserve, and Centro Studi per le Reti Ecologiche for providing the data. We also thank two anonymous reviewers whose comments and suggestions remarkably improved the first draft of the manuscript.

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MD was supported by a REN Biodiversity Chair postdoctoral grant by REN (Redes Energéticas Nacionais) and FCT (Fundação para a Ciência e a Tecnologia) and a Juan de la Cierva—Formación postdoctoral grant by MINECO (Ministerio de Economía y Empresa).

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Correspondence to Mauro Fabrizio.

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Fabrizio, M., Di Febbraro, M., D’Amico, M. et al. Habitat suitability vs landscape connectivity determining roadkill risk at a regional scale: a case study on European badger (Meles meles). Eur J Wildl Res 65, 7 (2019) doi:10.1007/s10344-018-1241-7

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  • Habitat generalist
  • Habitat suitability
  • Landscape connectivity
  • Roadkill
  • Eurasian badger Meles meles