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Nitrogen News

How tropical forests are fertilized by pollution

Smithsonian Institution scientists previously researched the ways humans disrupt the nitrogen cycle in tropical forests; new studies at two remote Panama and Thailand sites have provided evidence of long-term nitrogen pollution effects in tropical trees.

In the Media by Elizabeth Cunningham Perkins

Rare Trace Element Responsible for Rainforest Health

A team of researchers led by Princeton University scientists has found for the first time that tropical rainforests, a vital part of the Earth's ecosystem, rely on the rare trace element molybdenum to capture nitrogen fertilizer.

In the Media by Bob Ewing - 3 comments

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Nitrogen

Nitrogen Image

David LeBauer

Figure 1. Response ratios for overall mean and individual biomes exposed to nitrogen fertilizer. A response ratio of 1.2 indicates a 20% relative growth increase; mean and 95% C.I. responses are shown. The response ratio (R) is calculated as the ratio of plant growth in fertilized to control plots, and statistics are performed on the natural log of this ratio. Thus, when the 95% CI does not intersect the R=1 line, we consider the response significant. Non-overlapping CI are significantly differe

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