Elevated levels of atmospheric compounds of nitrogen can increase nitrogen availability.

The CCI was responsive to differences in nitrogen availability and was able to discriminate between treatments.

The nitrogen cycle is of particular interest to ecologists because nitrogen availability can affect the rate of key ecosystem processes, including primary production and decomposition.

By doing so, it reduces nitrogen losses by volatilization, accelerates mineralization and increases short-term nitrogen availability for transformation of organic matter into humus.

These findings are at odds with the observed phenomenon that under conditions of low phosphorus, the degree of AM colonization is inversely proportional to nitrogen availability.

Light has greater importance than nitrogen availability.

Myers et al. (2005a) hypothesized that potassium-stress in the laboratory may lead to increased nitrogen availability for soybean aphids.

Kudzu's ability to grow quickly, survive in areas of low nitrogen availability, and acquire resources quickly allows it to out-compete native species.

Rhizobium typically nodulate the roots of Trifolium, increasing nitrogen availability to the plant.

The tube of soil and chemicals can be compared to color of tubes with known concentration to determine the amount of nitrogen availability.