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Joshua Tree National Park Environment

Except for the occasional spectacular wildflower bloom, the desert appears to the casual visitor as an unchanging landscape. In reality it is a dynamic, constantly shifting ecosystem. Wind and rain have had the greatest effect in shaping this ecosystem. If global warming is occurring, the desert may get more rain.

Geologic processes are continually at work as well, but are so slow that we only notice their presence in the occasional earthquake. While Wildfire and human caused factors such as air pollution and off-road vehicle use can change the landscape very quickly. The park is a living laboratory that helps us understand how environmental factors have shaped this desert ecosystem and how they may be changing it at present. It also shows the sharp contrast between a less-disturbed ecosystem and the completely human-shaped one in the urban areas nearby. Park staff carefully monitor the effects of changes in air quality, and the effects of nitrogen deposition, wildfires, and invasion by nonnative plant species. Their watchful eyes can alert managers and the public to threats to desert resources in time for useful action.

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Maine ocean islands provide the only nesting sites for Atlantic puffins in the United States. Eastern Egg Rock in the midcoast region, Seal Island and Matinicus Rock at the mouth of Penobscot Bay, and Machias Seal Island and Petit Manan Island off the downeast coast provide habitat for more than 4,000 puffins each summer.

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Joshua Tree National Park Environment
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