The traditional separation between primary producers (autotrophs) and consumers
(heterotrophs) at the base of the marine food web is being increasingly replaced by the …

Large differences in δ 2 H of primary producers between aquatic and terrestrial ecosystems
are used to identify subsidies, discriminate organic matter sources, and reduce uncertainty …

Five species of freshwater green algae, including three strains of Botryococcus braunii (two
A Race, one B Race), Eudorina unicocca and Volvox aureus, were cultured under controlled …

The hydrogen isotopic composition (δ 2 H) of lipid biomarkers has diverse applications in
the fields of paleoclimatology, biogeochemistry, and microbial community dynamics. Large …

Diatoms contribute as a dominant group of microalgae to approximately 20% of the global
carbon fixation. In the plankton, these photosynthetic algae are exposed to a plethora of …

Zhang and Sachs [Hydrogen isotope fractionation in freshwater algae: I. Variations among
lipids and species. Organic Geochemistry 38, 582–608, 2007] demonstrated that algal lipid …

We have known about the processes of methanogenesis and methanotrophy for over 100
years, since the days of Winogradsky, yet their contributions to the carbon cycle were …

Cyanobacteria are important primary producers of organic matter in diverse environments
on a global scale. While mechanisms of CO2 fixation are well understood, the distribution of …

The communities of bacteria that assemble around marine microphytoplankton are
predictably dominated by Rhodobacterales, Flavobacteriales, and families within the …

Nutritional modes of unicellular eukaryotes range from pure photoautotrophy of some
phytoplankton to pure heterotrophy of species typically called protozoa. Between these two …