Karen E. Selph

The paper compares food-web structures in tuna spawning habitats of the Gulf of Mexico and Argo Basin, finding higher ecosystem efficiency in the Argo Basin due to differences in zooplankton herbivory and nutrient cycling.

The paper describes phytoplankton community composition in the oligotrophic Argo Basin during austral summer 2022, highlighting taxonomic and functional diversity across different depth layers.

The paper investigates grazing pathways in tropical oligotrophic waters by analyzing copepod and microzooplankton diets, finding that microzooplankton remove most daily production while copepods show moderate selection for picoplankton.

The paper quantifies primary productivity and nitrogen fixation in the eastern Indian Ocean, showing nitrogen recycling and N2 fixation support ecosystem productivity.

The paper identifies mixotrophs as a dominant component of the eukaryotic microbial community in oligotrophic Argo Basin waters, with high proportions of acid vacuole-containing microbes.

The paper quantifies microbial carbon flows in the spawning region of Southern Bluefin Tuna off NW Australia, showing Prochlorococcus dominates production and grazing in the upper euphotic zone.

The paper measures carbon fixation rates and taxonomic composition of small phytoplankton in different oceanic regions, suggesting phago-mixotrophy may help alleviate iron limitation in certain populations.