Individual study: Density dependence effects on demographic parameters-A case study of Père David's deer (Elaphurus davidianus) in captive and wild habitats
Yuan B.D., Wang L.B., Xie S.B., Ren Y.J., Liu B., Jia Y.Y., Shen H., Sun D.M. & Ruan H.H. (2017) Density dependence effects on demographic parameters-A case study of Père David's deer (Elaphurus davidianus) in captive and wild habitats. Biology and Environment: Proceedings of the Royal Irish Academy, 117, 139-144
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
Release captive-bred individuals to re-establish or boost populations in native range
A study in 1997–2016 in a grassland area in Jiangsu province, China (Yuan et al. 2017) found that a population of released captive-bred Père David's deer Elaphurus davidianus, established and increased in number over time. From a total of 82 founders, the population increased to 325 animals by 18 years after the first of these founders were released. In 1998, seven deer were released into a 1,000-ha area in which there were no other Père David's deer. Between 2002 and 2016, a further 75 animals were released. Observations were made with binoculars and using a drone, to estimate the deer population size. No other details of monitoring were provided in the study.
(Summarised by Phil Martin)