Agricultural, urban and industrial activities have dramatically increased aquatic nitrogen and
phosphorus pollution (eutrophication), threatening water quality and biotic integrity from …

Natural processes and human activities play a crucial role in changing the nitrogen cycle
and increasing nitrous oxide (N 2 O) emissions, which are accelerating at an unprecedented …

Salinization, a widespread threat to the structure and ecological functioning of inland and
coastal wetlands, is currently occurring at an unprecedented rate and geographic scale. The …

Cyanobacteria are the Earth's oldest (∼ 3.5 bya) oxygen evolving organisms, and they have
had major impacts on sha** our modern-day biosphere. Conversely, biospheric …

Harmful (toxic, food web altering, hypoxia generating) cyanobacterial algal blooms
(CyanoHABs) are proliferating world-wide due to anthropogenic nutrient enrichment, and …

In many aquatic systems, N2 fixation is an important component of the nitrogen (N) cycle.
Nitrogenase is a molybdenumenzyme complex found in phylogenetically diverse …

Harmful cyanobacterial blooms, reflecting advanced eutrophication, are spreading globally
and threaten the sustainability of freshwater ecosystems. Increasingly, non-nitrogen (N2) …

The widespread occurrence of nitrogen limitation to net primary production in terrestrial and
marine ecosystems is something of a puzzle; it would seem that nitrogen fixers should have …

Aquatic Photosynthesis is a comprehensive guide to understanding the evolution and
ecology of photosynthesis in aquatic environments. This second edition, thoroughly revised …

For the past 3.8 billion years, the geochemistry of the Earth's surface-its atmosphere, waters
and exposed crust-has been determined by the presence of biota. Photosynthetic organisms …