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2016 ; 6
(ä): 25531
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How maize monoculture and increasing winter rainfall have brought the hibernating
European hamster to the verge of extinction
#MMPMID27150008
Tissier ML
; Handrich Y
; Robin JP
; Weitten M
; Pevet P
; Kourkgy C
; Habold C
Sci Rep
2016[May]; 6
(ä): 25531
PMID27150008
show ga
Over the last decades, climate change and agricultural intensification have been
identified as two major phenomena negatively affecting biodiversity. However,
little is known about their effects on the life-history traits of hibernating
species living in agro-ecosystems. The European hamster (Cricetus cricetus), once
a common rodent on agricultural land, is now on the verge of extinction in
France. Despite the implemented measures for its protection, populations are
still in sharp decline but the reasons for it remain unclear. To investigate how
environmental change has affected this hibernating rodent, we used a data set
based on 1468 recordings of hamster body mass at emergence from hibernation from
1937 to 2014. We reveal the adverse effects of increasing winter rainfall and
maize monoculture intensification on the body mass of wild hamsters. Given the
links that exist between body mass, reproductive success and population dynamics
in mammals, these results are of particular importance to understand the decline
of this species. In view of the rates of maize monoculture intensification and
the predicted increase in winter rainfall, it is of the utmost importance to
improve land management in Western Europe to avoid the extinction of this
species.