Rocky Mountain National Park, Captioned

Science Behind the Scenes: The Mountain Pine Beetle-Captioned Version

14 min · 14 de mar de 2013
Portada del episodio Science Behind the Scenes: The Mountain Pine Beetle-Captioned Version

Descripción

Rocky Mountain National Park: Why are there so many brown trees? The Mountain Pine Beetle is one of several common, native insects that challenge western pine forests. Drought conditions, mild winters, dwarf mistletoe infestations, dense late seral mature forest stands, and a lack of wildlife fires have contributed to the outbreak.

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