[Annotation copied from Lynham et al. 2002 (https://www.frames.gov/rcs/18000/18093.html)] Demographic characteristics and associated vegetation were assessed for three naturally occurring, disjunct stands of red pine (Pinus resinosa Alt.) located west of Armstrong, Ontario and northwest of Jellicoe, Ontario. All sampled trees were mapped, cored for age estimation and increment growth measurements, and measured for diameter and heights. Floristics were described at each community. An analysis of covariance performed on the overall mean annual radial growth increment data (MAIr) using site as the independent variable, and age as the covariate, indicated a statistically significant difference in growth. An evaluation of the adjusted average MAIr's suggested that the two Armstrong area sites differed from the Jellicoe area site. The two Armstrong area populations showed slow growth rates, all-aged distributions, a long expectation of life, and a high age/diameter correlation. In contrast, the Jellicoe area population showed a much greater rate of growth, an even-aged distribution, a relatively short life span, and a low age/diameter correlation. Diameter distributions were patterned considerably differently from age distributions and represented the one recorded instance where the Armstrong area populations were the least comparable with one another. It is suggested that the similarities expressed by the Armstrong area populations are characteristic of marginal red pine stands. Rather than demonstrating the colonizing strategy typical of red pine in the better represented parts of its range, these populations have maintained their dynamic nature by exhibiting a "climax" strategy that has enabled them to survive the harsh growing environment characterizing their habitats. This survivorship strategy is one of continual recruitment made possible through species specific seeding, root development, and stem morphology characteristics over a long life. It is further suggested that these marginal populations have been stable for some time and will continue to be so in the future.