Phytoplankton are key players in the global carbon cycle, contributing about half of global
primary productivity. Within the phytoplankton, functional groups (characterized by distinct …

Phosphorus (P) is a required element for life. Its various chemical forms are found
throughout the lithosphere and hydrosphere, where they are acted on by numerous abiotic …

Marine diazotrophs convert dinitrogen (N 2) gas into bioavailable nitrogen (N), supporting
life in the global ocean. In 2012, the first version of the global oceanic diazotroph database …

This paper contrasts the natural and anthropogenic controls on the conversion of unreactive
N 2 to more reactive forms of nitrogen (Nr). A variety of data sets are used to construct global …

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

Over geological time, photosynthetic carbon fixation in the oceans has exceeded respiratory
oxidation of organic carbon. The imbalance between the two processes has resulted in the …

Planktonic marine cyanobacteria of the genus Trichodesmium occur throughout the
oligotrophic tropical and subtropical oceans. Their unusual adaptations, from the molecular …

Redfield noted the similarity between the average nitrogen-to-phosphorus ratio in plankton
(N: P= 16 by atoms) and in deep oceanic waters (N: P= 15; refs,). He argued that this was …

Seven years of time-series observations of biogeochemical processes in the subtropical
North Pacific Ocean gyre have revealed dramatic changes in the microbial community …

The Corg: P ratios of organic-rich facies (TOC> 1%) exhibit considerable variation through
the Phanerozoic, from< 10: 1 in the Permian Phosphoria Formation to> 1000: 1 in some …