UNH Ocean Seminar

Global Potential for Macroalgae Mariculture: Yields and Uncertainties

Isabella Arzeno-Soltero
Postdoctoral Scholar

Coastal Dynamics Lab
University of California, Irvine

Friday, Mar. 25, 2022, 3:10pm
Chase 105

Seaweed cultivation has been proposed as a strategy to remove carbon dioxide from the atmosphere. However, we lack detailed estimates of the global potential for seaweed cultivation. I will begin this seminar by discussing the growing interest in seaweed farming and reviewing the current state of the seaweed farming industry. I will summarize existing efforts to estimate global macroalgae productivity potential, focusing on results from a recently developed dynamic seaweed growth model, the Global MacroAlgae Cultivation Modeling System (G-MACMODS). Unlike previous models, G-MACMODS estimates the potential global yield of four different types of seaweed worldwide under different nutrient scenarios.
We’ll talk about the G-MACMODS harvest estimates in the context of some relevant carbon-dioxide removal targets, emphasizing the uncertainties surrounding these estimates and discussing pressing areas of future research.


Isabella was born and raised in Puerto Rico. She received her Ph.D. in Physical Oceanography from the Scripps Institution of Oceanography in
2020 and is now a postdoctoral scholar in the Coastal Dynamics Lab at the University of California, Irvine. Her current scholastic work focuses on understanding the global biophysical potential for seaweed cultivation.