The Connection Between Climate and Food Security
Hunger remains one of the most pressing global challenges, and organizations like The Hunger Project and RESULTS have been at the forefront of efforts to eradicate it. The Hunger Project focuses on empowering communities to develop sustainable food systems through grassroots leadership, education, and self-reliance programs¹. RESULTS is a global advocacy organization dedicated to ending poverty by influencing policy changes related to food security, healthcare, and economic opportunity².
Some of our team members are proud graduates of these organizations, and their experience in tackling food insecurity informs our work in climate restoration.
But what if one of the most powerful tools for addressing global hunger isn’t just in agriculture—but in the ocean? And what if restoring the ocean’s natural productivity could help secure nutritious food for billions?
This is the intriguing possibility offered by Ocean Iron Fertilization (OIF).
How OIF Might Boost Fish Populations
OIF works by adding small amounts of iron to nutrient-poor regions of the ocean, stimulating phytoplankton blooms. These microscopic plants capture CO₂ from the atmosphere through photosynthesis, converting it into organic biomass that forms the base of the marine food chain—ultimately feeding zooplankton, small fish, and larger fish species.
So, what could happen if we scaled OIF to its full theoretical potential?
Let’s explore a “what if” scenario to understand the magnitude of the opportunity.
A Hypothetical Calculation: From CO₂ to Fish
1. CO₂ Conversion to Biomass
- Phytoplankton convert CO₂ into organic matter at roughly 1 ton CO₂ → 2 tons phytoplankton biomass³.
- Not all of this biomass reaches the upper levels of the food web—some is consumed or recycled at lower levels.
2. Trophic Efficiency and Fish Yield
- Energy transfer through the marine food chain follows a general 10% rule⁴:
- 10% of phytoplankton becomes zooplankton
- 10% of zooplankton becomes small fish
- 10% of small fish becomes large fish
3. Scaling the Hypothetical Impact of Full OIF Deployment
If OIF were deployed globally to remove 60 Gt of CO₂ annually, we might see:
- 120 Gt of phytoplankton biomass (at a 2:1 ratio)³
- 12 Gt of zooplankton biomass
- 1.2 Gt of small fish biomass
- 0.12 Gt (120 million tons) of large fish biomass
4. What Could That Mean for Food Security?
The global average fish consumption per person is around 20 kg (44 lbs) per year⁵.
- In this scenario, 120 million tons of extra large fish could theoretically feed 6 billion people annually.
A Possibility Worth Exploring
Of course, this scenario is based on ideal conditions and simplified assumptions. In the real world, many factors—ecological limits, ocean currents, nutrient cycling, biodiversity impacts, and policy considerations—would influence the actual outcomes of large-scale OIF.
But even if a fraction of this potential is realized, it could transform global food systems. A 10% increase in ocean productivity, for example, could support hundreds of millions of people with additional seafood protein, bolster coastal economies, and provide critical support to regions facing hunger.
The Role of CRA: Restoring the Climate, Regenerating Life
The Climate Restoration Alliance (CRA) is not only advancing Ocean Iron Fertilization (OIF) as a climate solution but also as a bold strategy to support global food security. By coordinating large-scale OIF deployment, CRA works with scientists, policymakers, investors, entrepreneurs, and industry leaders to restore ocean ecosystems and revitalize fisheries.
Through strategic partnerships and funding, CRA ensures that OIF benefits coastal communities, small-scale fishers, and global seafood markets, making abundant, nutritious food more accessible to billions. With the potential to significantly increase the global fish supply, CRA’s leadership in scaling OIF is a key step toward ending hunger while restoring the climate.
Call to Action: Join the Movement
Restoring the climate isn’t just about reducing carbon—it’s about regenerating life. Our Ocean Iron Fertilization (OIF) project has the potential to enhance marine ecosystems, increase fish populations, and help alleviate global hunger.
We’re looking for partners, funders, and advocates to help scale this promising solution. By supporting CRA’s OIF initiative, you’re investing in both climate restoration and food security for future generations.
👉 Invest in a livable future. Support our OIF Project.
Sources
- The Hunger Project. (2024). “Our Work.” Retrieved from https://thp.org/our-work
- RESULTS. (2024). “About Us.” Retrieved from https://results.org/about
- Martin, J.H., Gordon, R.M., & Fitzwater, S.E. (1991). “Iron deficiency limits phytoplankton growth in the north-east Pacific subarctic.” Nature, 350, 227–229.
- Pauly, D. & Christensen, V. (1995). “Primary production required to sustain global fisheries.” Nature, 374, 255–257.
- FAO (2022). The State of World Fisheries and Aquaculture 2022. Food and Agriculture Organization of the United Nations.