Differences between rural (n = 18) and urban (n = 66) centenarians are examined across the following variables: physical health, activities of daily living, mental health, and life satisfaction. Results demonstrate higher levels of morale in rural residents and higher levels of functional health as exhibited by urban elders. Qualitative data support trends of increased degrees of independence among the rural participants. The absence of robust differences in rural and urban centenarians is discussed in terms of a leveling-off effect.

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Three yield projection models are compared and contrasted. All three models project yield implicitly by first projecting stand tables. The first model uses the Weibull probability density function, the second a percentile-based algorithm, and last a modification of an individual tree distance independent basal area projection model. It is shown that, for most criteria evaluated, the model which makes use of the distance-independent basal area projection algorithm is superior. For. Sci. 36(2):413-424.

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