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1

Fish selection by riverine Eurasian otters in lowland England

100%
Grant K. R., Harrington L. A.
Acta Theriologica
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2015
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tom 60
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nr 3
2

Effect of winter temperature and maize food abundance on long-term population dynamics of the wild boar Sus scrofa

100%
Kopij G., Panek M.
Polish Journal of Ecology
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2016
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tom 64
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nr 3
In a few recent decades, population increase of the wild boar has been evidenced in various European countries. As the result of this increase, the wild boar has expanded into farmlands, especially in some regions, where the cultivated maize constitutes the main source of its diet through the larger part of the year. The effect of winter weather and land use changes on the expansion of wild boar was analysed in a farmland in southern Poland. Over 21 years (1985–2005) in the study area of about 681 km² a rapid increase in the number of harvested wild boars was recorded. While in the middle 1980′s, there were only about 40 animals harvested per hunting season, in 2005 the number increased to 180. The rapid increase was, in general, correlated positively to the increasing surface area of the maize crops — from 205 ha (0.9%) in 1985 to 3212 ha (14.9% of arable lands) in 2004. However the correlation between the increase of the average late winter (February/March) temperature and the number of wild boars seems to be negative and contrary to our expectations, the numbers of wild boars were found to be higher under the lower temperatures in that period of the year.
3

Relationships between wild ungulates density and crop damage in Hungary

80%
Bleier N., Lehoczki R., Ujvary D., Szemethy L., Csanyi S.
Acta Theriologica
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2012
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tom 57
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nr 4
Game damage to agriculture represents one of the most important and most frequent human–wildlife conflicts worldwide. In Hungary and in the other European countries, damage caused by wild boar (Sus scrofa) and red deer (Cervus elaphus) is the most significant. The volume of damage is correlated with the population density of the game species, however, not exclusively. Since the growing expansion of wild ungulates is a general tendency in Europe, increasing conflicts can be envisaged. The objective of our study was to assess the possible relationships between the amount of agricultural game damage and big game population density considering some other factors (e.g. habitat structure, sown area of cultivated plants) by analysing wildlife management and land-use statistics for the 19 counties of Hungary from 1997 to 2008. According to the results, crop damage positively correlated with the population density of red deer and wild boar, with the length of forest edge, and the proportion of the sown area of maize. According to the regression model, these factors could be accountable for 74.2 % of the total agricultural game damage.
4

Habitat selection and the change in distribution of Asian elephants in Mengyang Protected Area, Yunnan, China

80%
Lin L., Feng L., Pan W., Guo X., Zhao J., Luo A., Zhang L.
Acta Theriologica
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2008
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tom 53
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nr 4
Elephants were confined to Mengyang Protected Area in China and their distribution range had reduced greatly compared to past records. A preliminary study of habitat selection by Asian elephantsElephas maximus Linnaeus, 1758 and their distribution was conducted in Mengyang Protected Area and its surrounds using site visits and transect surveys from July 2003 to December 2006. Although no variable significantly influenced their habitat selection, elephants still showed preference for altitudes between 900 and 1200 m, gradients <30°, and orientations to the south-east, south and south-west. Human activities, including habitat transformation and degradation, disturbance by large infrastructure and poaching were considered to be the main factors inducing elephant distribution changes.
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