Wrangell - St Elias National Park and Preserve Trees and Shrubs

Tree communities in the park are often determined by the presence of permafrost as much as climatic zones. Areas underlain with permafrost are characterized by black spruce ( Picea mariana ) which is often twisted and stunted in growth. Wetlands and sinkholes are often characterized by Salix spp , dwarf birch ( Betula glandulosa ); while white spruce ( Picea glauca ) likes to keep its roots dry and tends to be in the uplands occasionally mixed with paper birch ( Betula resinifera ). In the Chugach Range, treeline is lower and can be dominated more by shrubs that trees.

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Featured Park
Two deserts, two large ecosystems whose characteristics are determined primarily by elevation, come together at Joshua Tree National Park. The Colorado Desert encompasses the eastern part of the park and features natural gardens of creosote bush...
Featured Wildlife
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.