Robert Kenward

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Whether predators can limit their prey has been a topic of scientific debate for decades. Traditionally it was believed that predators take only wounded, sick, old or otherwise low-quality individuals, and thus have little impact on prey populations. However, there is increasing evidence that, at least under certain circumstances, vertebrate predators may(More)
Diffusion modelling has shown that conservative demographic traits combined with feeding competition could explain red squirrel replacement by grey squirrels. We used field data from seven separate red and grey squirrel populations, in oak-hazel woods and Scots pines, to reject the hypothesis that red squirrel density and breeding is intrinsically poorer(More)
PCR was used to amplify adenoviral DNA, and transmission electron microscopy (TEM) to detect adenovirus particles in tissue and intestinal content samples from red squirrels (Sciurus vulgaris) associated with a reintroduction study on Anglesey (North Wales), from other populations on the island and from stock held at the Welsh Mountain Zoo, 38 km to(More)
BACKGROUND Patients with dementia who go out unaccompanied are at risk of accidents or getting lost. It is not known whether they could benefit from electronic tracking devices or whether such devices are practically feasible. METHOD The likely demand for an electronic tracking device was assessed by means of a telephone survey of a convenience sample of(More)
David J. EVEREST* AHVLA-Weybridge, New Haw, Addlestone, Surrey KT15 3NB, UK. E-mail: Craig M. SHUTTLEWORTH Red Squirrels Trust Wales, Plas Newydd Country House, Llanfairpwll, Anglesey LL61 6DQ, UK. E-mail: Mark F. STIDWORTHY International Zoo Veterinary Group, Station House, Parkwood Street,(More)
DNA fingerprinting of nestlings ofFalco cherrug was used to determine indirectly the survival of the corresponding adult parent birds, which are difficult to catch in sufficient numbers. This approach is possible because Saker falcons show a high degree of site and mate tenacity. DNA profiles of nestlings from the same territory but from different years(More)
Animal territories that differ in the availability of food resources will require (all other things being equal) different levels of effort for successful reproduction. As a consequence, breeding performance may become most strongly dependent on factors that affect individual foraging where resources are poor. We investigated potential links between(More)
Conservation scientists, national governments, and international conservation groups seek to devise, and implement, governance strategies that mitigate human impact on the environment. However, few studies to date have systematically investigated the performance of different systems of governance in achieving successful conservation outcomes. Here, we use a(More)
Radio-tagging is widely used for studies of movements, resource use and demography of land vertebrates, with potential to combine such data for predictive modelling of populations from individuals. Such modelling requires standard measures of individual space use, for combination with data on resources, survival, dispersal and breeding. This paper describes(More)