Many trace metals are essential micronutrients, but also potent toxins. Due to natural and
anthropogenic causes, vastly different trace metal concentrations occur in various habitats …

Nitrogen is an essential nutrient for all life on Earth and it acts as a major control on
biological productivity in the modern ocean. Accurate reconstructions of the evolution of life …

The partial pressure of oxygen in Earth's atmosphere has increased dramatically through
time, and this increase is thought to have occurred in two rapid steps at both ends of the …

“The Answer to the Great Question... Of Life, the Universe and Everything... Is... Forty-two,”
said Deep Thought, with infinite majesty and calm…“I checked it very thoroughly,” said the …

Microbial ecology is the study of interactions among microbes in natural environments and
their roles in biogeochemical cycles, food web dynamics, and the evolution of life. Microbes …

Nitrogen is an essential nutrient for all organisms that must have been available since the
origin of life. Abiotic processes including hydrothermal reduction, photochemical reactions …

Nitrogen isotope compositions in sedimentary rocks (d 15 N sed) are routinely used for
reconstructing Cenozoic N-biogeochemical cycling and are also being increasingly applied …

Colin Reynolds exquisitely consolidated our understanding of driving forces shaping
phytoplankton communities and those setting the upper limit to biomass yield, with limitation …

Cyanobacterial blooms are becoming more common in freshwater systems, causing
ecological degradation and human health risks through exposure to cyanotoxins. The role of …

Modern microbial mats can provide key insights into early Earth ecosystems and Shark Bay,
Australia, holds one of the best examples of these systems. Identifying the spatial distribution …