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Providing evidence to improve practice

Individual study: Eucalypt plantings on farms: Use by insectivorous bats in south-eastern Australia

Published source details

Law B.S. & Chidel M. (2006) Eucalypt plantings on farms: Use by insectivorous bats in south-eastern Australia. Biological Conservation, 133, 236-249


This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Retain remnant forest or woodland on agricultural land Bat Conservation

A replicated, site comparison study in 2002 of 120 sites in an agricultural area in New South Wales and Victoria, Australia (Law & Chidel 2006) found that remnants of original forest had higher bat activity than plantations or treeless grazed paddocks, but the number of bat species did not differ. More bat passes were recorded in remnants of original forest (average 302 bat passes/night) than in plantations (87 bat passes/night) or treeless grazed paddocks (50 bat passes/night). However, a similar number of bat species were recorded in remnants of forest (7 species), plantations (5–7 species) and paddocks (5 species). Eleven bat species were recorded in total (see original reference for data for individual species). Grazing land with small remnants of forest had been planted with native tree species from the mid-1970s to 1991. There were twelve treatments including different shapes or sizes (narrow, small, medium, large, very large) and ages (<10 or >10 years old) of remnants of original forest, plantations, and grazed paddocks with and without trees. For each of twelve treatments, 10 points were sampled with bat detectors for one full night in November–December 2002.

(Summarised by Anna Berthinussen)

Create tree plantations on agricultural land to provide roosting and foraging habitat for bats Bat Conservation

A replicated, site comparison study in 2002 of 120 sites in an agricultural area in New South Wales and Victoria, Australia (Law & Chidel 2006) found that sites planted with native Eucalypt spp. trees had similar overall bat activity and a similar number of bat species as treeless grazed paddocks. Bat activity and the number of bat species did not differ significantly between plantations (average 87 bat passes/night, 5–7 species) and treeless grazed paddocks (50 bat passes/night, 5 species). Bat activity was significantly lower in plantations than in remnants of original forest (302 bat passes/night), but the number of bat species was similar (7 species in remnants). Eleven bat species were recorded in total (see original reference for data for individual species). Grazing land with small remnants of forest had been planted with native tree species from the mid-1970s to 1991. Twelve treatments were sampled including different shapes or sizes (narrow, small, medium, large, very large) and ages (<10 or >10 years old) of plantations and remnant forest, and grazed paddocks with and without trees. For each of 12 treatments, 10 points were sampled with bat detectors for one full night in November–December 2002.

(Summarised by Anna Berthinussen)