. Components of adaptive variation in pinus contorta from the inland northwest. Variation biology; evolution; lodepole pine adaptation Northwestern States. Figure 2—Climatic isopleths in relation to the distribution of the species (shading) and location of the Bitterroot Range (symbols) for (A) mean annual number of days with temperatures lower than 0 °C, (B) mean annual days with tempera- tures greater than 30 °C, (C) average annual frost-free period, and (D) mean annual precipita- tion (cm) ( Department of Commerce 1968). 2. Please note that these images are extracted from scanned page i

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. Components of adaptive variation in pinus contorta from the inland northwest. Variation biology; evolution; lodepole pine adaptation Northwestern States. Figure 2—Climatic isopleths in relation to the distribution of the species (shading) and location of the Bitterroot Range (symbols) for (A) mean annual number of days with temperatures lower than 0 °C, (B) mean annual days with tempera- tures greater than 30 °C, (C) average annual frost-free period, and (D) mean annual precipita- tion (cm) ( Department of Commerce 1968). 2. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Rehfeldt, G. E; Intermountain Research Station (Ogden, Utah). [Ogden, Utah] : U. S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station

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Keywords: ., bookcentury1900, booksubjectevolution, booksubjectvariationbiolo