Abstract
Population turnover and mortality is compared in three well-studied roe populations. Natural turnover in all three populations is approximately 25% per annum, and is confined mainly to an annual loss of one and two year olds caused by the territorial behaviour of the adults. In order to achieve a control of roe numbers, it is necessary to kill in excess of a quarter of their numbers each year. Selective shooting of young animals to reduce damage is unlikely to be effective and is almost certainly impossible to operate in practice. Research is required in two areas: 1. It is essential to know whether roe numbers can be reduced temporarily at critical times of the year when trees are vulnerable to damage, 2. the figure of a 25% cull is derived from unshot populations where immigration is almost non-existant. it is therefore important to know what effect heavy shooting will have on the dispersion and settling of young non-territorial animals.
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