A new study, titled 'Diminishing Returns in Labour in the Global Marine Food System' and recently published in Nature Sustainability, uncovers significant challenges concerning labor in marine food production systems. Led by researchers from the University of Bergen and an international team, the study offers insights into global changes in the number of fishers from 1950 to 2015.
Postdoctoral researcher in theoretical ecology, Kim J. N. Scherrer, from the University of Bergen, acted as the corresponding author, highlighting the university's commitment to interdisciplinary collaboration.
Key Findings
The study reveals an unexpected trend; despite great technological advancements, the global number of fishers has continued to rise. This increase is especially prominent in low- and middle-income countries, whereas high-income nations have experienced a marked decline. Unfortunately, this trend has resulted in a decrease in catch per fisher since the 1990s. In contrast, the food production per farmer grew rapidly.
- Our findings are striking. Despite advanced technology, we've witnessed a decline in catch per fisher since the 1990s. This underscores the challenges of sustaining global fishing industries, says postdoctoral researcher in theoretical ecology, Kim J. N. Scherrer, at the University of Bergen.
Implications
The study offers a crucial perspective on challenges and trends affecting global marine food production systems. The decline in productivity per labor unit in the fishing sector, specifically fish per fisher, could have extensive consequences for food production efficiency, marine ecosystems, and fishing communities.
The study's insights are valuable for policymakers and stakeholders in fisheries and environmental management, highlighting the necessity for a balanced approach to resource management and technological advancement in this sector.
Contributions
- Kim J. N. Scherrer (University of Bergen): Led the study and analyzed the data.
- Eric D. Galbraith (McGill University, Universitat Autònoma de Barcelona): Contributed to conceptualization, methodology development and analysis.
- Yannick Rousseau (Dalhousie University): Involved in shaping the study's concept and developing the methods.
- Lydia C. L. Teh (University of British Columbia): Involved in shaping the study's concept and developing the methods.
- U. Rashid Sumaila (University of British Columbia): Involved in shaping the study's concept.
DOI: https://doi.org/10.1038/s41893-023-01249-8
