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Scientific Integrity Policy (PDF; 1.4 MB)


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Generalist No More

Although the Yazoo Darter (Etheostoma raneyi) was previously thought to be a habitat generalist able to thrive in a variety of conditions, U.S. Forest Service scientists Kenneth Sterling and Melvin Warren guessed differently. “Literature suggested the darter was a generalist, but details at small spatial scales were lacking for its sand-bottom stream habitat in the […]

30 Years of Nitrogen Fertilization in Spruce-Fir Forest

Rocks and sediments bind up almost 98 percent of all nitrogen. The remaining 2 percent is in motion, part of a global chemical cycle that includes humans, bacteria, plants, and the atmosphere. “Plants need nitrogen to grow,” says U.S. Forest Service research ecologist Steve McNulty. “However, excess nitrogen can harm plants.” Nitrogen and sulfur can […]

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