Boundary-Line Growth Patterns to Determine Disturbance History of Remnant Longleaf Pine (Pinus palustris P. Mill.) in Mixed Forests of Southeastern Virginia¹

Climate-Radial Growth Relationships of Northern Latitudinal Range Margin Longleaf Pine (Pinus palustrisP. Mill.) in the Atlantic Coastal Plain of Southeastern Virginia

“…COFECHA was used to statistically verify our crossdating and create master tree-ring series for both sites (Holmes 1983;Grissino-Mayer 2001). To minimize the effects of endogenous and exogenous disturbance while maximizing the climate signal, we began by omitting individuals from the master series for both sites based on boundary-line growth patterns (Black and Abrams 2003;Black and Abrams 2005;Bhuta et al 2008). We omitted individual trees cumulatively experiencing both moderate (20%) and major (50%) release events or those experiencing major (50%) release events in their individual measurement series from the master series.…”

Leaf Physiological and Morphological Responses to Shade in Grass-Stage Seedlings and Young Trees of Longleaf Pine

“…Longleaf pine may be moderately shade tolerant when young but become more intolerant of shade with increasing age or size [9]. Longleaf pine has a unique seedling grass stage in which internode elongation is suppressed, the terminal bud is protected from fire, and carbohydrate reserves in root systems accumulate to support a subsequent bolting stage of rapid stem elongation [10].…”

“…Questions have been raised concerning the degree of shade tolerance in longleaf pine. For example, Bhuta et al [9] examined historic growth responses of remnant longleaf pine stands to release events and concluded that longleaf pine seedlings may be less shade intolerant than formerly thought and seedlings can survive under heavy overstory competition awaiting release.…”

Identifying dendroecological growth releases in American beech, jack pine, and white oak: Within-tree sampling strategy

“…The Nowacki and Abrams (1997) criteria for overstory oak have been among the most thoroughly investigated, and validation studies have shown that peak radial growth response corresponds to the disturbance date, and that the magnitude of release response, in terms of percent-growth change, corresponds to the degree of crown release (Rentch et al, 2002(Rentch et al, , 2003. An extension of the running mean techniques, the boundary line release criteria proposed by Black and Abrams (2003) incorporates the effects of prior growth history, in an attempt to better standardize releases across various age, crown, and size classes and potentially species (Splechtna et al, 2005;Nagel et al, 2007;Bhuta et al, 2009). In the recently developed ''absolute increase'' method, the release threshold for a species is set in terms of absolute growth rate, which indirectly incorporates the effects of prior growth rate and species on release magnitude (Fraver and White, 2005).…”