BCNWRBalcones Canyonlands National Wildlife Refuge (US Fish & Wildlife Service; Marble Falls, TX)
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However, this age limit may be related to disturbance, such as fire, which potentially constrains the Texas red oak population at BCNWR. While aboveground stems live relatively short lives, persistence of underground vegetative root structures may extend the total life of individuals, as has been found in other oak woodlands (Clark and Hallgren, 2003).
Our attempt to representatively sample all topographic environments within the BCNWR was contrasted by the result that most trees we collected were from south-facing slopes, which are typically dry and hot in this region.
Sexton of BCNWR for their generous logistical and data support during this study, and J.