Ecological genetics of Pinus contorta in the Upper Snake River Basin of eastern Idaho and Wyoming ecologicalgeneti356rehf Year: 1986 Figure 3.âPopulation means for four variables plotted by elevation of ttie seed source. Symbols ' ' ' ' ' ' ' ' ' ' 1 ' 1â code geographic origins: ⢠= Upper Snake River '^oo asoo 5900 7200 8500 Basin; O = Lower Snake River, â = Wasatcfi Mountains, â² = Deadline Ridge. elevation of seed source, in 5

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