Sentences with phrase «increased nitrogen cycling»

Not exact matches

«Microbes involved in the nitrogen cycle, which are still active today, could have played a major role in calcite precipitation because of their ability to increase the pH,» explains Dr Stinnesbeck.

Researchers in Hawaii found that guppies released in the 1920s drove down native fish populations, perhaps by competing with them for food and living space, and had likely changed the cycle of nutrients in water: Guppy - rich areas showed increased levels of dissolved nitrogen — from ammonium in fish urine and gill excretions — which, in turn, stimulated algae growth.

In 2014, researchers at the National Oceanic and Atmospheric Administration found that the increased use of natural gas combined cycles in power generation has led to 40 percent less nitrogen oxide emissions and 44 percent less sulfur oxides emissions since 1997.

Smith says that the observed increase in nitrogen emissions from fertilizer is nearly double the value used in biofuel life - cycle assessments.

The reduction of phosphate - rich ribosomes2 in warmer oceans will tend to produce higher organismal nitrogen (N) to phosphate (P) ratios, in turn increasing demand for N with consequences for the marine carbon cycle due to shifts towards N - limitation.