Geographic variation in cold hardiness among eastern white pine (Pinus strobus L.) provenances in Ontario

Embolism induced by winter drought may be critical for the survival of Pinus sylvestris L. near its southern distribution limit

“…The high impairment of hydraulic conductivity found in the south-exposed branches of affected trees may agree with the symptoms described (needle browning followed by severe defoliation in the south face of the top). In principle, these symptoms could also be attributable to frost-induced damage (Lu et al 2003). However, Peguero-Pina et al (2008) found that, in this population, the threshold value for frost damage in frost-hardened trees was ca.…”

Modifying climate change habitat models using tree species-specific assessments of model uncertainty and life history-factors

“…We can then evaluate each species' biological and disturbance characteristics to identify species that may have greater adaptive capacity. Of course, genetic variability in the species' populations is a key variable in whether the species will be able to adapt to new climate conditions (Rehfeldt et al, 1999;Lu et al, 2003). The result that climatic clusters will likely move independently of species, indicates a clear need to understand genetic variation of species.…”

Impact of three silvicultural treatments on growth, light-energy processing, and related needle-level adaptive traits of Pinus strobus from two regions

“…As there are no immediate sources for this migration to the island, consideration should be given to the introduction of nearby mainland seed sources. Research into cold hardiness and growth variation by Joyce et al (2002) and Lu et al (2003) for ON populations of white pine suggests that white pine populations can be safely moved northward by 28 latitude. Mixing local seed sources with modestly more southern seed sources would provide more variation for natural selection and greater probability of a more fit future population than currently exists.…”