To make the case for mainstreaming ocean sustainability and add to the existing literature, Citigroup carried out an original analysis consisting of two parts: (1) an assessment of impact materiality and revenue exposure for industries and a (2) geospatial analysis to identify potential hotspots of marine natural capital loss.

John Virdin of the Nicholas Institute was one of the expert contributors to this report.

In a special issue of Frontiers in Marine Science, “Emerging Challenges and Solutions for Plastic Pollution,” these authors and others provide a transdisciplinary collection of articles exploring plastic pollution issues and hypothesizing solutions. The topic is broad to include diverse approaches as contributions from all stakeholders are needed to provide a full perspective on the plastic waste problem.

The global Illuminating Hidden Harvests study contributes to a more holistic understanding of what small-scale fisheries are, their importance, and why they are essential to efforts to achieve the United Nations Sustainable Development Goals. By using this knowledge wisely within a human rights-based approach in line with the Small-Scale Fisheries Guidelines, and by empowering small-scale fishers and fishworkers, a more inclusive, equitable, sustainable, and resilient small-scale scale fisheries subsector can be achieved.

Aquatic foods are critical for food and nutrition security in Malawi, but it is unclear which populations benefit from different aquatic foods and what factors shape food access. Spatial analysis of food flows across value chains from Lake Malawi to domestic consumers shows that usipa (Engraulicypris sardella) reaches more consumers than chambo (Oreochromis karongae) across all Malawi districts. Spatial analysis of food flows can guide policy makers toward supporting fisheries that reach vulnerable populations and designing interventions that enhance physical and economic access to fish.

In a study published by the journal One Earth, Duke experts share findings from an examination of the types of commitments that corporations have made to address global plastic pollution. The authors find that, rather than tackle virgin plastics, most companies target packaging and general plastics and frequently emphasize recycling-related efforts. While many large and important companies are making commitments, significantly more efforts beyond plastic recycling are required to effectively address plastic pollution challenges.

In a commentary published by Frontiers in Marine Science, Duke experts outline evidence underscoring the urgency of the plastic policy crisis and recommend novel research-based interventions. The interdisciplinary group of authors are part of Duke's Plastic Pollution Working Group.

Poverty and food insecurity persist in sub-Saharan Africa. The authors conducted a secondary analysis of nationally representative data from Malawi, Tanzania, and Uganda to investigate how both proximity to and engagement with small-scale fisheries are associated with household poverty and food insecurity. Results suggest that households engaged in small-scale fisheries were less likely to be poor than households engaged only in agriculture. Households living in proximity to small-scale fisheries were more likely to achieve adequate food security and were less likely to be income poor, compared to the most distant households.

Governments worldwide are increasingly adopting public policies, laws, and ordinances to reduce plastic pollution. To date, studies have not analyzed the content of, and trends in, these policies. Employing a content analysis and literature search, we set out to better understand: (i) governments responses to this problem over time, and (ii) the state of the available evidence on the effectiveness of policy responses.

Large-scale fishing effort in the waters of tropical and lower income countries is predominantly driven by ‘distant water fishing fleets’ often owned by companies based in a small number of countries and has been associated with a range of negative environmental and social outcomes. West Africa is an example where such fleets are a dominant feature. In the waters of Guinea-Bissau, Guinea, Sierra Leone, Liberia and Ghana, 75% of all licensed bottom trawl vessels in 2017 either registered (‘flagged’) or largely owned in China.

Plastic is now the most widely used human-made substance on the planet, and plastics pollution impacts marine and coastal ecosystems, local economies, and human health. Local and national governments are increasingly responding by banning plastic bags and other specific plastic products, taxing the use of certain plastics, and improving waste management and recycling. These are important steps, but alone they will not result in a meaningful reduction in cumulative plastics pollution or encourage development of sufficient alternatives to plastic. Additional policy measures are necessary.