“…The Big Thicket is an ill-defined region of southeast Texas (see Cozine, 2004;MacRoberts, 2004, 2008a;Callicott et al, 2006;Diggs et al, 2006 for discussion and literature). However, it is generally agreed that it encompasses all or part of Newton, Jasper, Hardin, Tyler, San Jacinto, Polk and northern Liberty counties, an area of approximately 15,700 km 2 (Diggs et al, 2006).…”