This is especially true in the Arctic Ocean, where geographic and climatic factors contribute to a particularly complex nitrogen cycle.

The major transformations of nitrogen are nitrogen fixation, nitrification, denitrification, anammox, and ammonification (Figure 1).

The Nitrogen Cycle We begin our discussion of the N cycle in a typical grain crop rotation (corn, wheat, double-crop soybean) by considering the plant residue left on the field surface after harvest.

Rock record illuminates oxygen history Date: May 29, 2025 Source: Syracuse University Summary: A new study reveals that the aerobic nitrogen cycle in the ocean may have occurred about 100 million ...

What does nitrogen do for plants? Read on to learn how to improve the health of your plants and how to add nitrogen to soil.

Life on Earth has always depended on nitrogen. As a building block of proteins and DNA, nitrogen is essential to all living organisms. Yet, despite its abundance in the atmosphere, nitrogen gas is ...

Living organisms need nitrogen as a central building block for protein formation, for example. However, although our atmosphere contains plenty of nitrogen, neither humans nor the vast majority of ...

Carbon cycle feedback: When it comes to understanding the forests' role in both giving off and capturing carbon dioxide, those are three words that contain a lot of science. In a new study ...

Nitrogen Cycle: Key Ingredient In Climate Model Refines Global Predictions Date: October 11, 2009 Source: DOE/Oak Ridge National Laboratory Summary: For the first time, climate scientists from ...

This is CF Industries’ Donaldsonville Complex, the world’s largest ammonia production facility. The 1,400-acre nitrogen fertilizer plant is part of a sprawling global industry that’s ...

Although there is great physiological and phylogenetic diversity among the organisms that carry out nitrogen fixation, they all have a similar enzyme complex called nitrogenase that catalyzes the ...