Fig. 2From: Drought response of upland oak (Quercus L.) species in Appalachian hardwood forests of the southeastern USABasal area increment (cm2/year) for northern red (a), black (b), chestnut (c), and white oak (d). Gray lines represent the individual tree BAI chronologies while the black line represents average BAI chronology for the respective species. Dashed vertical line indicates year of thinning (fall/winter 1974/1975)Back to article page