Individual study: Nongame wildlife responses to chaining of pinyon-juniper woodlands
O'Meara T.E., Haufler J.B., Stelter L.H. & Nagy J.G. (1981) Nongame wildlife responses to chaining of pinyon-juniper woodlands. The Journal of Wildlife Management, 45, 381-389
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
Remove vegetation by hand/machine
A site comparison study in 1977 of five areas within a pinyon-juniper woodland in Colorado, USA (O'Meara et al. 1981) found that mechanically clearing trees increased small mammal abundance but reduced diversity. More small mammals were caught in area cleared areas (175–295 individuals) than in the uncleared area (102 individuals). However, diversity was lower in cleared areas than in the uncleared area (results reported as Shannon-Weaver diversity index). Small mammals were sampled in four study areas (≤28 km apart). One area was mature pinyon-juniper woodland whilst other areas comprised woodland that had been cleared by chaining (a heavy anchor chain was dragged between two bulldozers) 1, 8, and 15 years previously. Small mammals were live-trapped on three grids in each area (32 trap stations/grid). Trapping was conducted concurrently on all areas, during two trapping sessions of eight days each, in mid-July and mid-August 1977.
(Summarised by Nick Littlewood)