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@proceedings{1477960, author = {Bíl, Michal and Andrášik, Richard and Bartonička, Tomáš and Křivánková, Z and Sedoník, Jiří}, booktitle = {IENE 2018 International Conference, September 10-14, 2018 Eindhoven, The Netherlands}, keywords = {repelents movements mammals roadkills}, language = {eng}, isbn = {978-91-639-8714-4}, title = {Prevention of wildlife-vehicle collisions: An evaluation of odour repellent effectiveness}, year = {2018} }
TY - CONF ID - 1477960 AU - Bíl, Michal - Andrášik, Richard - Bartonička, Tomáš - Křivánková, Z - Sedoník, Jiří PY - 2018 TI - Prevention of wildlife-vehicle collisions: An evaluation of odour repellent effectiveness SN - 9789163987144 KW - repelents movements mammals roadkills N2 - Wildlife-vehicle collisions (WVC) pose a safety issue in many nations� Collisions with large mammals result in numerous deaths and severe injuries to animals, property damage and injuries to car passen-gers� Therefore, several safety measures have been recommended to decrease the number of WVC� The best results (up to 83% of WVC decrease) were accomplished by the use of fencing combined with over- or underpasses� On the other hand, fencing is only recom- mended for highways and primary roads due to their overall costs� Affordable measures, such as odour repellents, can be considered as an appropriate alter- native for secondary roads� We examined the effectiveness of odour repellents concerning the reduction of WVC� The Before-After-Control-Impact study design was applied to con-trol both the effect of odour repellents and the expected natural variation in wildlife populations at the monitored sites over time� Eighteen places were selected on the Czech road network where WVC were frequent in previous years on the basis of traffic crash data� Control places were delimited on the same road segments to keep the exposition to the traffic the same� We compared the WVC fre-quencies before and after odour repellent installation at treated sites to the WVC frequencies at con-trol sites� Wildlife carcass gathering was carried out once per week during spring and autumn from 2014 to 2016� We also used the police crash database to supplement carcass data� In total, 201 killed mammals (roe deer, red deer and wild boar) were identified over 47 months (January 2013 – Novem-ber 2016)� First, we analysed the data using a standard technique based on the comparison group method� However, this conventional approach is suitable only for sufficiently large datasets� Low frequencies usually lead to insignificant results� Therefore, we also applied an approach based on the Bayesian inference� We calculated the probability that the odour repellents have a positive effect on the number of WVC� We found out that a WVC decrease accounting for 26-43% can be expected at treated sites� The odour repellents can be used as affordable measures to reduce the number of WVC� Some specific requirements have to be met, however, to ensure that the repellents work properly (installation, rejuvenation, etc ER -
BÍL, Michal, Richard ANDRÁŠIK, Tomáš BARTONIČKA, Z KŘIVÁNKOVÁ a Jiří SEDONÍK. Prevention of wildlife-vehicle collisions: An evaluation of odour repellent effectiveness. In \textit{IENE 2018 International Conference, September 10-14, 2018 Eindhoven, The Netherlands}. 2018. ISBN~978-91-639-8714-4.
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