Effects of prescribed fire on fuels, vegetation, and Golden-cheeked Warbler (Setophaga chrysoparia) demographics in Texas juniper-oak woodlands
作者： Jennifer L. Reidy , Frank R. Thompson , Carl Schwope , Scott Rowin , James M. Mueller
DOI: 10.1016/J.FORECO.2016.06.005
关键词: Juniper 、 Vegetation 、 Wildlife refuge 、 Woodland 、 Fire protection 、 Canopy 、 Ecology 、 Litter 、 Environmental science 、 Warbler
摘要: Abstract The Golden-cheeked Warbler ( Setophaga chrysoparia ) is an endangered songbird that breeds in mature juniper-oak woodlands restricted to Central Texas. This habitat increasingly susceptible crown fire due climate change, land use and suppression. Prescribed a potential tool reduce the risk of may be management enhance for breeding warblers. However, no experimental study has been undertaken investigate how well prescribed can meet these goals. We conducted before-after control-impact on three plot-pairs within Balcones Canyonlands National Wildlife Refuge, Texas, from 2012 2014 evaluate response fuel loads, vegetation structure, warblers fire. measured loads structure summer (pre-treatment) (post-treatment). burned one randomly-chosen plot each plot-pair during February 2013 severity May 2013. monitored populations determine abundance success season. Impact fires was highly variable across treatment plots with ∼49% points showing effects junipers ∼9% high mortality juniper canopy. All 12 measures responded direction expected; however, only seedling density, sapling hardwood canopy cover, litter depth were significant (i.e., year × treatment effect P
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