Nitrogen source effects on marine DOM and microbes
Cascading influence of inorganic nitrogen sources on DOM production composition lability and microbial community structure in the open ocean
We evaluated the potential for abrupt increases in inorganic N sources to induce cascading effects on DOM and microbial communities in the surface ocean. We collected water from 5 m depth in the central North Pacific and amended duplicate 20 L polycarbonate carboys with nitrate or ammonium, tracking planktonic carbon fixation DOM production DOM composition and microbial community structure responses over 1 week relative to controls