Nitrogen is a key nutrient because it fuels the growth of plankton, which forms the basis of the marine food web. Two opposing processes determine the global nitrogen cycle: nitrogen fixation and ...

Phytoplankton are small but mighty. As one of the biggest drivers of primary production in Earth's oceans, they convert sunlight and carbon dioxide (CO 2) into chemical energy, forming the base of the ...

Biogeochemists have shown that rare doubly heavy nitrogen-15 molecules act as a natural fingerprint of microbial nitrogen ...

Nitrogen is essential for all life on Earth. In the global oceans, however, this element is scarce, and nitrogen availability is therefore critical for the growth of marine life. Some bacteria found ...