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Lindblom, Sofie, 2011. Distribution of wild boar (Sus scrofa) damage and harvest loss in crop fields. Second cycle, A1E. Grimsö: SLU, Dept. of Ecology



The last decades the populations of wild boar (Sus scrofa) has increased rapidly over the species’ entire European range, including Sweden. This is followed by increasing human-wildlife conflicts as a result of the wild boar foraging behavior, causing damage to agricultural crop fields due to trampling and feeding. To be able to minimize damage we need more knowledge of where in the fields the risk of damage is high and what features in the landscape that affect this risk. I analyzed damage distribution in relation to the distance to six different landscape features; forest, road, ditch, building, game field and bait station, in the study area, the Island Mörkö in eastern central Sweden. A binary logistic regression analysis showed that damage increased with proximity to forest, road, ditch and bait station, strongest affected by the distance to forest and bait station. The damage also showed to be more severe closer to the forest edge. I also calculated the cost of wild boar damage, during the harvest season of 2010, based on the field survey. The apparent income loss due to damaged and reduced harvest in wheat, oats and barley fields was this year about 120 000 SEK. This sum indicates a significant problem and point at the need for measures to minimize damage. My results suggest, for example, that sensitive crops like wheat should be cultivated on fields with less edge towards the forest, and that bait stations should be placed as far away from fields as possible.

Main title:Distribution of wild boar (Sus scrofa) damage and harvest loss in crop fields
Authors:Lindblom, Sofie
Supervisor:Månsson, Johan and Jansson, Gunnar
Examiner:Kjellander, Petter
Series:Independent project/ Degree project / SLU, Department of Ecology
Volume/Sequential designation:2011:1
Year of Publication:2011
Level and depth descriptor:Second cycle, A1E
Student's programme affiliation:Other
Supervising department:(NL, NJ) > Dept. of Ecology
Keywords:agriculture, cost, damage, edge effect, human-wildlife conflict, Sus scrofa, Wild boar
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Subject. Use of subject categories until 2023-04-30.:Agriculture - General aspects
Protection of plants - General aspects
Animal ecology
Farm layout
Economics and management
Deposited On:07 Feb 2011 11:52
Metadata Last Modified:20 Apr 2012 14:17

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