Individual study: Territory density and reproductive success of Florida grasshopper sparrows Ammodramus savannarum floridanus following prescribed prairie fire at the U.S. Air Force Avon Park Range, Florida, USA
Delany M.F., Linda S.B., Pranty B. & Perkins D.W. (2002) Density and reproductive success of Florida grasshopper sparrows following fire. Journal of Range Management, 55, 336-340
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
Use prescribed burning on grasslands
In prairie grassland at Air Force Avon Park Range, USA, a replicated study in March-August 1997-1999 (Delany et al. 2002) found that Florida grasshopper sparrow Ammodramus savannarum floridanus reproductive success was significantly higher six months after burning (38% of 32 nests successful) than at 18 (14% of 35 nests successful) and 30 months (0% of 13 nests successful) after burning. Four prairie pastures (165-324 ha) were burned in December to mid-March on three year rotations. Sparrow territory density (up to 0.2 territories/ha) appeared unaffected by time elapsed since burning.