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  • This dataset describes 35 years of 6-monthly population sampling of adult and juvenile bank voles Myodes glareolus and wood mice Apodemus sylvaticus in a Derbyshire Ash Fraxinus excelsior woodland, together with annual and seasonal ash fruit-fall and a measure of winter severity. Additional data describe a 4 year experiment on a nearby study area where in two winters supplementary ash fruit were supplied and population data collected in parallel to the main study area. Woodland small mammal population dynamics are commonly influenced by variable food supplies (due to masting), climate and population density. However, the effects of precise environmental variables are poorly understood. To explain between-year variations in bank vole and wood mouse reproductive/population growth rates, we applied a state-space model to 33 years of live-trapping data. Experimental additions of ash fruit in winter aided interpretation. Full details about this dataset can be found at

  • Data comprise results of systematic live-trapping surveys of small mammals on three types of arable field margin at 30 locations on the Hillesden Estate, Buckinghamshire (UK), for four autumn and four spring periods between 2005 and 2011. Trapping was conducted on standard (cross compliance) field margins, and also on conservation margins (Entry Level Scheme). Data include 3172 trap records of animal captures, including breeding condition, mass (g), and recaptures. Dominant species are Wood Mouse (Apodemus sylvaticus), Bank Vole (Myodes glareolus), Field Vole (Microtus agrestis) and Common Shrew (Sorex araneus), with smaller numbers of Pygmy Shrew (Sorex minutus), Water Shrew (Neomys fodiens) and Harvest Mouse (Micromys minutus). The research was funded by Defra. Full details about this dataset can be found at