Abstract
Arthropod density on the boles of loblolly pines ( Pinus taeda) was compared between a stand with and stand without hardwood midstory and between a stand of loblolly and shortleaf pines ( P. echinata) in the Stephen F. Austin Experimental Forest, Nacogdoches Co., Texas, USA from September 1993 through July 1994. Arthropod density was greatest ( t=5.67, 10 d.f., P<0.001) in an open pine stand nearly devoid of hardwood midstory than in a pine stand with dense hardwood midstory. Loblolly pine had greater ( t=2.34, 10.9 d.f., P=0.040) arthropod densities than shortleaf pine. Vegetative characteristics within a pine stand rather than bark rugosity appear to be the dominant factor determining arthropod density on the boles of pines. The red-cockaded woodpecker ( Picoides borealis) should benefit from greater abundances of arthropods on the boles of pines particularly during the nesting season. In order to provide prime foraging habitat for the red-cockaded woodpecker, land managers should consider the vegetative community structure within foraging habitat.
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