Effects of hunting on wild boar <i>Sus scrofa</i> behaviour

Thurfjell, Henrik; Spong, Göran; Ericsson, Göran

doi:10.2981/12-027

Cited by 105 publications

(86 citation statements)

References 32 publications

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“…Selective removal of individuals may change aspects of social organization and dispersal rates (Milner et al 2007;Allendorf and Hard 2009;Averbeck et al 2010;Borg et al 2015, Leclerc et al 2017, while hunting disturbance can induce escape movements and temporary home range displacement (Kamei et al 2010;Grignolio et al 2011;Thurfjell et al 2013;Jarnemo and Wikenros 2014). In the case of wild boar, repeated hunting disturbance may affect social structure, leading to an increase in fission-fusion dynamics in the population, potentially facilitating the spread of diseases (Iacolina et al 2009;Scillitani et al 2010;Saïd et al 2012).…”

Section: Hunting and Disease Managementmentioning

confidence: 99%

Challenges and science-based implications for modern management and conservation of European ungulate populations

et al. 2017

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Wildlife management systems face growing challenges to cope with increasingly complex interactions between wildlife populations, the environment and human activities. In this position statement, we address the most important issues characterising current ungulate conservation and management in Europe. We present some key points arising from ecological research that may be critical for a reassessment of ungulate management in the future.

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Section: Hunting and Disease Managementmentioning

confidence: 99%

Challenges and science-based implications for modern management and conservation of European ungulate populations

et al. 2017

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“…The dense stand A with a low shrub layer showed the highest impact of small mammals, while the stand C with a low density of mature trees and a rich undergrowth in the higher height/age classes (exceeding 50 cm) showed the highest impact by large animals. We assume that a shelter extends the duration of animal activities (Podgórski et al 2013, Thurfjell et al 2013. Therefore, the proportion of acorns consumed by ungulates in a safe place was significantly higher.…”

Section: Wild Boar Impactmentioning

confidence: 99%

“…Subsequently, they move to forests where sufficient food sources and shelter are available (Frackowiak et al 2013). Indeed, animals with adequate food supplies do not migrate far from their resting places in search of uncertain sources (Massei et al 1997, Lemel et al 2003, and they move to more distant places only after the local food sources have been completely depleted (Thurfjell et al 2013). Therefore, their feeding behavior is conditioned by the distance from food sources, escape possibilities and cover opportunities (Spitz & Janeau 1995).…”

Section: Wild Boar Impactmentioning

confidence: 99%

The impact of seed predation and browsing on natural sessile oak regeneration under different light conditions in an over-aged coppice stand

Kamler¹,

Dobrovolný²,

Drimaj³

et al. 2016

iForest

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(1) Sessile oak (Quercus petraea (Matt.) Liebl.) is one of the most important commercial species cultivated at low altitudes in the Czech Republic, and overaged coppices are a significant part of oak stands in the region. In order to secure a high-valuable timber production (e.g., through conversion of such stands into coppices-with-standards), knowledge of the potential and limits of generative regeneration is essential. This study was conducted in three oakdominated over-aged coppice stands in different stages of conversion into coppices-with-standards and characterized by different basal area (BA, from 9.3 to 14.1 m 2 ha -1 ) and relative diffuse radiation (ISF, from 12.1 to 35.5%). The study stands were compared with respect to seed predation following acorn fall and oak regeneration parameters. At the time of their fall the acorns represented a sought-after source of food for large mammals (particularly wild boar). At the end of acorn fall, 13-67% acorns were lost due to animal predation. A control evaluation conducted the following spring revealed a decrease of 92-97% in fallen acorns. Despite the major animal impact, a high reserve of acorns and saplings remained in the stands (4 600-29 000 acorns and 66 000-310 000 saplings per ha). With increasing light intensity the oak regeneration density decreased, while the height and age variability of oak regeneration increased. Although saplings were capable of surviving several years under unfavorable light conditions (even below 12% ISF), they require a minimum of 20% ISF (i.e., BA < 16 m 2 ha -1 ) to achieve sustainable height increment. Based on our results, for conversion of such stands into coppices-with-standards we recommend a maximum of 200 reserved trees (BA = 16 m 2 ha -1 ) to achieve successful height growth of the understorey.

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“…Recent research has begun to analyse behavioural responses of wild ungulates to hunting pressure(Benhaiem et al, 2008;Lone, Loe, Meisingset, Stamnes, & Mysterud, 2015;Thurfjell, Spong, & Ericsson, 2013) and management practices(Ossi et al, 2017). Human presence and topography had also no apparent effect on roe deer expansion.…”

mentioning

confidence: 99%

Propagule pressure and land cover changes as main drivers of red and roe deer expansion in mainland Portugal

Carvalho

Torres

Acevedo

et al. 2017

Diversity and Distributions

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Aim:The management of the rapid expansion of wild ungulate populations is a challenging task and a societal priority. Using a progressive database of red (Cervus elaphus) and roe (Capreolus capreolus) deer colonization over the last three decades, we estimate the range expansion rates and the underlying mechanisms involved in the expansion patterns of red and roe deer populations at the south-western edge of its European distribution.Location: Mainland Portugal. Methods:We compiled and grouped historical red and roe deer distribution data in three time periods (). We used generalized linear mixed models to evaluate how biotic and abiotic drivers determine the expansion patterns of red and roe deer. Results:We reported a significant expansion of red and roe deer populations during the last three decades. The significant interaction between propagule pressure and land cover suggests that the effects of propagule pressure vary along environmental gradients. We found that the influence of livestock on red and roe deer expansion is idiosyncratic. Contrary to red deer, roe deer expansion was also influenced by climatic conditions. We did not detect any significant effect of human factors on the red and roe deer expansion. Main conclusions:The synergistic effects between variables should be taken into account when studying the patterns of species expansion. Our study emphasize that policy makers should consider the spatial, temporal, ecological and societal nuances of species expansion in order to prioritize management measures and to allocate management budgets. Although concerted strategies to curtail species spread should mitigate red and roe deer economic and ecological impacts, these effects can be neutralized by a continuous rural exodus and the consequent forest and shrub encroachment. K E Y W O R D S

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Effects of hunting on wild boar Sus scrofa behaviour

Cited by 105 publications

References 32 publications

Challenges and science-based implications for modern management and conservation of European ungulate populations

Challenges and science-based implications for modern management and conservation of European ungulate populations

The impact of seed predation and browsing on natural sessile oak regeneration under different light conditions in an over-aged coppice stand

Propagule pressure and land cover changes as main drivers of red and roe deer expansion in mainland Portugal

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