The Pine Tree project has completed extensive environmental impact studies to monitor and protect threatened and endangered species including the desert tortoise and the Mojave ground squirrel.

松树项目已经完成了广泛的环境影响研究，以监测和保护可能受到威胁和危险的生物物种，包括沙漠龟和莫哈韦地面松鼠等。

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But to the chagrin of environmentalists, all that clean energy also threatens the habitat of an endangered desert tortoise.

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The desert tortoise has proven to be an ongoing issue at Ivanpah.

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Instead, Mr. Henen often hustles out to remote parts of the Mojave Desert to make sure the threatened desert tortoise, which can weigh 10 pounds and live to be more than 50 years old, isn't frightened by charging troops.

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