Masting in ponderosa pine: comparisons of pollen and seed over space and time.

The among-population synchrony in pollen and seed cone production \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \overline{{r_{\text{ap}} }} $$\end{document} was relatively strong between geographically proximate populations, but declined quickly with Euclidian distance and elevational difference, although the association between seed cone production and distance was marginally non-significant (Fig. 2 ).

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