Recent Examples on the WebThat study estimated that the woolly adelgid could potentially lead to a net release of 4.5 tons of carbon per roughly two and a half acres of hemlock forest replaced by black birch. Zoya Teirstein, Wired, 14 Aug. 2021 But that study and others predict that hardwood tree species, and an opportunistic tree called black birch in particular, will eventually replace the dead and dying hemlock—a trend researchers have already noticed in Northeast woods. Zoya Teirstein, Wired, 14 Aug. 2021 Interestingly, North American trees such as red maple and black birch are more cautious and conservative than European and East Asian trees. Richard B. Primack, The Conversation, 4 Mar. 2021 Volunteers have been cutting down larger maples and black birch that eventually would have crowded out the cedars. Peter Marteka, courant.com, 4 Feb. 2018 Smaller maples and black birch also have been removed and smaller cedars from the preserve planted in their place. Peter Marteka, courant.com, 4 Feb. 2018