1 in 5 Sierra Nevada conifers are no longer compatible with the environmental conditions around them — raising questions about how to manage the land. Researchers say it may get worse.
Although there are conifers in those areas now, Hill and other researchers suggested that as the trees die out, they'll be replaced with other types of vegetation better suited to the environmental conditions.
The team scrutinized vegetation data dating back to the 1930s, when all Sierra Nevada conifers were growing in appropriate climate conditions. Now, four out of five do.
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