Showing 4411 - 4420 of 4628
Search results for 'biodiversity OR "species diversity" OR "forest ecology" OR habitat OR habitats OR "freshwater ecology" OR "species richness"'
Heavy metal toxicity in plants. Heavy metal toxicity in plants.

By White, P. J.
2012 (H ISBN 9781845939953)

Heavy metals include the transition-metal elements essential to plant nutrition, iron (Fe), zinc (Zn), manganese (Mn), copper (Cu), nickel (Ni) and mo...

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Winning the lottery on the Colorado River. Winning the lottery on the Colorado River.

By Manning, R. E. Anderson, L. E.
2012 (H ISBN 9781845939311)

The Colorado River is the heart of Grand Canyon National Park and offers visitors a world-class whitewater river trip. However, use of the river was c...

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How many visitors is too many at Arches? How many visitors is too many at Arches?

By Manning, R. E. Anderson, L. E.
2012 (H ISBN 9781845939311)

Visitor use of Arches National Park has grown dramatically in the past few decades and now exceeds 1 million visits annually. But this use has had sev...

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"No bad trip in Glacier". "No bad trip in Glacier".

By Manning, R. E. Anderson, L. E.
2012 (H ISBN 9781845939311)

Glacier National Park is known as a backpacker's paradise, and for much of the park's history, little regulation of backcountry camping existed. But a...

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"Alternative transportation" at Grand Teton. "Alternative transportation" at Grand Teton.

By Manning, R. E. Anderson, L. E.
2012 (H ISBN 9781845939311)

Roads in Grand Teton National Park were designed to accommodate visitors in automobiles, and most visitors travel through the park in this way. But wi...

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The winter wonderland of Yellowstone. The winter wonderland of Yellowstone.

By Manning, R. E. Anderson, L. E.
2012 (H ISBN 9781845939311)

In winter, Yellowstone National Park is a geothermal wonderland of steam, snow, and ice. Visitors on snowmobiles and snowcoaches are afforded remarkab...

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Managing monuments and memorials at the National Mall. Managing monuments and memorials at the National Mall.

By Manning, R. E. Anderson, L. E.
2012 (H ISBN 9781845939311)

The National Mall contains some of the world's most iconic monuments and memorials, serving as a national symbolic space, a backdrop for civic discour...

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A mountain with handrails at Yosemite. A mountain with handrails at Yosemite.

By Manning, R. E. Anderson, L. E.
2012 (H ISBN 9781845939311)

Increasingly large numbers of visitors to Yosemite National Park were choosing to hike to the summit of Half Dome, the scenic symbol of the park and o...

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Bear Etiquette in Katmai. Bear Etiquette in Katmai.

By Manning, R. E. Anderson, L. E.
2012 (H ISBN 9781845939311)

Visitors to Katmai National Park and Preserve have the opportunity to view brown bears at close range as they gather to feast on migrating salmon. But...

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Preventing the Petrified Forest from disappearing. Preventing the Petrified Forest from disappearing.

By Manning, R. E. Anderson, L. E.
2012 (H ISBN 9781845939311)

Visitors to Petrified Forest National Park have the opportunity to walk among the crystallized remains of trees that lived more than 200 million years...

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