A sustainable ocean economy in 2030: Opportunities and challenges

In this report the World Ocean Initiative assesses the challenges facing key sectors in the ocean economy, including seafood, shipping, tourism and renewable energy. We look at the role of banks and investors in financing the transition towards clean, low carbon technologies, as well as opportunities in data and analytics. We examine solutions to marine plastic pollution from source to sea, and the ocean’s potential to remove carbon from the atmosphere and increase resilience to the impacts of climate change.

A connectivity portfolio effect stabilizes marine reserve performance

Well-managed and enforced no-take marine reserves generate important larval subsidies to neighboring habitats and thereby contribute to the long-term sustainability of fisheries. However, larval dispersal patterns are variable, which leads to temporal fluctuations in the contribution of a single reserve to the replenishment of local populations. Identifying management strategies that mitigate the uncertainty in larval supply will help ensure the stability of recruitment dynamics and minimize the volatility in fishery catches.