It was assumed that the high levels of oxygen combined with the low amount of dissolved organic matter in the marine water column ... on the oceanic nitrogen cycle compared to that of cyanobacteria.

Rivers, streams, lakes, and reservoirs aren't just scenic parts of our landscape -- they're also vital engines for life on Earth. These inland waters 'breathe' oxygen, just like we do. But a new study ...

A group of researchers, led by Utrecht earth scientists Junjie Wang and Jack Middelburg, have developed for the first time a global model that describes the entire oxygen cycle of inland waters ...