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Changes in red spruce populations in montane forests of the Appalachians, 1982-1987


, : Changes in red spruce populations in montane forests of the Appalachians, 1982-1987. American midland naturalist 125(2): 340-347

A resurvey of red spruce (Picea rubens Sarg.) along 10.4 km of transects showed that between 1982 and 1987 there was a substantial increase in the proportion of dead canopy-sized spruce at elevations between 650 and 1220 m at three sites in the Adirondack, Green and White mountains of the northeastern United States. Overall, the percent of dead canopy spruce (> 10 cm dbh and > 1.37 m tall) along the transects increased from 26.1% in 1982 to 36.7% in 1987. Most of the mortality at higher elevations (> 900 m) appears to have resulted from the death of individuals that were severely declining in 1982. There was no change in dead spruce or crown vigor between 1982 and 1987 at four of the six southern Appalachian sites. A decrease in crown vigor was observed at Mt. Mitchell (N.C.) and Roan Mt. (Tenn.), at least some of which was associated with damage from a recent ice storm.

US$19.90

DOI: 10.2307/2426238


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