Prescribed fire effects on structure in uneven-aged stands of loblolly and shortleaf pines (1998)Cain, M. D., Wigley, T. B., & Reed, D. J. (1998). Prescribed fire effects on structure in uneven-aged stands of loblolly and shortleaf pines. Wildlife Society Bulletin, 26(2), 209-218. Retrieved from http://www.jstor.org/stable/3784039?seq=1#page_scan_tab_contents Structure was assessed in uneven-aged stands of loblolly (Pinus taeda) and shortleaf pine (P. echinata) that were subjected to prescribed winter burns on cycles of 0, 3, 6, and 9 years. Vegetation assessments were made in late summer of l 990, l O years after a single hardwood control treatment (basal injection of nonpine woody plants >2.5 cm in ground- line diameter with Tordon l Ol R); 1 year after the fourth 3-year burn cycle; 4 years after the second 6-year burn cycle; and 1 year after the second 9-year burn cycle. Compared to unburned controls, prescribed burning tended to increase (P < 0.008) percent ground cover from graminoids and composites. For understory woody plants that were >1 m tall but < 0.002) with more frequent pre- scribed burning and with shorter time since burning. There were no burn treatment dif- ferences in density (P= 0.199, p= 0.853) or basal area (P= 0.477, p= 0.898) for sapling-size stems (2.5-8.9 cm dbh), but species diversity of saplings was lower (P= 0.002) on plots prescribe burned at 3-year intervals as compared to other treatments http://www.jstor.org/stable/3784039?seq=1#page_scan_tab_contents
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