Sven A. Kranz

The paper develops icecosms to study physiological changes and survival of ice-associated algae under varying ice conditions.

This study examines how Fe availability, light intensity, and photoperiod affect growth, photosynthesis, and protein expression in Southern Ocean phytoplankton, revealing species-specific strategies for resource allocation.

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 analyzes environmental data from Lagrangian ocean experiments, showing that density surfaces better capture variability than depth, confirming the Lagrangian nature of the experiments.

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 quantifies carbon export and sinking particle characteristics in the eastern Indian Ocean, finding net remineralization in the deep euphotic zone and similar patterns to the Gulf of Mexico.

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

This study identifies Prochlorococcus as dominant in the oligotrophic Argo Basin, revealing photophysiological strategies that enable survival under nitrate limitation and Fe stress, and shows how mesoscale eddies episodically alter phytoplankton communities.

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.