No mitigating effects of roadside vegetation clearing on ungulate-vehicle collisions in Nord-Trøndelag

The number of ungulate-vehicle collisions has increased substantially over the last few decades. To reduce the number of accidents several mitigation measures have been implemented, but there is in many cases no evaluation of their collision preventive effect. By analysing moose (Alces alces) and ro...

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Bibliographic Details
Main Author: Lindstrøm, Ingrid Marie
Other Authors: Ringsby, Thor Harald, Solberg, Erling, Rolandsen, Christer Moe, Van Moorter, Bram
Format: Master Thesis
Language:English
Published: NTNU 2016
Subjects:
Online Access:http://hdl.handle.net/11250/2391557
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author Lindstrøm, Ingrid Marie
author2 Ringsby, Thor Harald
Solberg, Erling
Rolandsen, Christer Moe
Van Moorter, Bram
author_facet Lindstrøm, Ingrid Marie
author_sort Lindstrøm, Ingrid Marie
collection NTNU Open Archive (Norwegian University of Science and Technology)
description The number of ungulate-vehicle collisions has increased substantially over the last few decades. To reduce the number of accidents several mitigation measures have been implemented, but there is in many cases no evaluation of their collision preventive effect. By analysing moose (Alces alces) and roe deer (Capreolus capreolus) collision data from 2009 2015, I evaluated the effect of roadside vegetation clearing conducted in 2011 and 2012 in Nord-Trøndelag in central Norway. In the cleared areas I expected a substantial decrease in collision probability in the year after a clearing, followed by a slow increase as the vegetation re-emerged. I found that for both species the probability of a collision was substantially higher in cleared versus uncleared areas, indicating that the areas with high risk of collisions are targeted for vegetation clearing. However, the results revealed no reduction in the number of roe deer and moose collisions following clearing, indicating that vegetation clearing has no collision preventive effect. For moose, I found the number of collisions on cleared and uncleared stretches to be synchronised among years, and that the annual growth in collision numbers and snow depth were positively correlated. This suggests that snow depth is an important factor influencing the number of moose-vehicle collisions in Nord-Trøndelag.
format Master Thesis
genre Alces alces
genre_facet Alces alces
geographic Norway
geographic_facet Norway
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spelling ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2391557 2025-01-16T18:45:08+00:00 No mitigating effects of roadside vegetation clearing on ungulate-vehicle collisions in Nord-Trøndelag Lindstrøm, Ingrid Marie Ringsby, Thor Harald Solberg, Erling Rolandsen, Christer Moe Van Moorter, Bram 2016 http://hdl.handle.net/11250/2391557 eng eng NTNU ntnudaim:12557 http://hdl.handle.net/11250/2391557 36 Natural Resources Management Biologi Master thesis 2016 ftntnutrondheimi 2019-09-17T06:51:36Z The number of ungulate-vehicle collisions has increased substantially over the last few decades. To reduce the number of accidents several mitigation measures have been implemented, but there is in many cases no evaluation of their collision preventive effect. By analysing moose (Alces alces) and roe deer (Capreolus capreolus) collision data from 2009 2015, I evaluated the effect of roadside vegetation clearing conducted in 2011 and 2012 in Nord-Trøndelag in central Norway. In the cleared areas I expected a substantial decrease in collision probability in the year after a clearing, followed by a slow increase as the vegetation re-emerged. I found that for both species the probability of a collision was substantially higher in cleared versus uncleared areas, indicating that the areas with high risk of collisions are targeted for vegetation clearing. However, the results revealed no reduction in the number of roe deer and moose collisions following clearing, indicating that vegetation clearing has no collision preventive effect. For moose, I found the number of collisions on cleared and uncleared stretches to be synchronised among years, and that the annual growth in collision numbers and snow depth were positively correlated. This suggests that snow depth is an important factor influencing the number of moose-vehicle collisions in Nord-Trøndelag. Master Thesis Alces alces NTNU Open Archive (Norwegian University of Science and Technology) Norway
spellingShingle Natural Resources Management
Biologi
Lindstrøm, Ingrid Marie
No mitigating effects of roadside vegetation clearing on ungulate-vehicle collisions in Nord-Trøndelag
title No mitigating effects of roadside vegetation clearing on ungulate-vehicle collisions in Nord-Trøndelag
title_full No mitigating effects of roadside vegetation clearing on ungulate-vehicle collisions in Nord-Trøndelag
title_fullStr No mitigating effects of roadside vegetation clearing on ungulate-vehicle collisions in Nord-Trøndelag
title_full_unstemmed No mitigating effects of roadside vegetation clearing on ungulate-vehicle collisions in Nord-Trøndelag
title_short No mitigating effects of roadside vegetation clearing on ungulate-vehicle collisions in Nord-Trøndelag
title_sort no mitigating effects of roadside vegetation clearing on ungulate-vehicle collisions in nord-trøndelag
topic Natural Resources Management
Biologi
topic_facet Natural Resources Management
Biologi
url http://hdl.handle.net/11250/2391557