This Project Grant award from the National Science Foundation's Biological Sciences (CFDA 47.074) program will support a collaborative, multi-institution research project to investigate the role of nutrient availability in the diversification and ecological rise of eukaryotes during the Tonian period (1000-720 million years ago). The total award amount is $606,871 and the project will run from July 2025 through June 2030. The research team, comprising seven principal investigators, one postdoctoral fellow, five graduate students, and two undergraduate students from five U.S. universities, will systematically collect and integrate paleontological, geochemical, sedimentological, and stratigraphic data from early Tonian strata in North China and late Tonian strata in the Grand Canyon of Arizona. This data will be combined with global compilations and an Earth system model to reconstruct nutrient availability, eukaryote taxonomic and functional biodiversity, and marine geochemical cycles. The goal is to test the hypothesis that increasing nutrient availability in Tonian oceans drove the diversification and ecological rise of eukaryotes, transforming the marine ecosystem from a prokaryote-dominated world to one teeming with eukaryotes. The project aims to illuminate the complex feedbacks among nutrient availability, functional biodiversity, and biodiversity dynamics during this major transition in Earth history.
Mod # | Description | Reason For Modification | Federal Obligation (Click to sort descending) | Date (Click to sort ascending) |
|---|---|---|---|---|
| Not listed | $606.9k | 7/7/25 |