Climate Change Impacts on Marine Fisheries Management

Climate change is reshaping the structure and productivity of marine ecosystems, presenting complex challenges for fisheries management worldwide. Rising sea temperatures, ocean acidification and deoxygenation are driving shifts in species distributions, altering habitat suitability and modifying food-web dynamics. Episodic events such as marine heatwaves intensify these impacts by causing abrupt declines in biomass and rapid range shifts, which can outpace the responsiveness of conventional management frameworks. Managers must contend with changing stock productivity, transboundary migrations and evolving species interactions, all of which undermine the assumptions of static quota systems and fixed seasonal closures. At the same time, socio-economic factors, including the livelihoods of dependent communities and global market dynamics, influence adaptive capacity and equity in fishery governance. The integration of multi-year habitat forecasts, economic risk assessments and blue-carbon valuation into management decision-making offers new tools for building resilience. Adaptive portfolios that combine dynamic, fixed and precautionary measures are emerging as a pathway to sustain ecosystem services and safeguard food security in a rapidly changing ocean.

Research from Nature Portfolio

Recent studies have advanced the ability to forecast changes in fish habitat over multiple years by coupling ocean-state predictions with species-specific physiological limits. This approach promises to inform proactive spatial management and dynamic quota allocation but requires improved observations and model validation before operational deployment. Analyses of global fisheries revenue projections under high greenhouse-gas scenarios reveal that economic losses may exceed declines in catch by up to one third by mid-century, highlighting the need for integrated ecological-economic models to guide policy responses. Work on marine heatwaves shows that these short-lived but intense warming events can drive biomass declines and biogeographical shifts at rates four times faster than gradual climate warming, stressing the importance of incorporating extreme events into risk assessments and harvest control rules.

Climate Change Impacts on Marine Fisheries Management publication trend

The graph below shows the total number of articles in climate change impacts on marine fisheries management across all publications each year (not limited to Nature Index journals).

Technical terms

Marine heatwave: A prolonged period of anomalously high sea-surface temperatures that can cause abrupt ecosystem disruption and accelerated stock declines.

Habitat suitability: A measure of environmental conditions—such as temperature, salinity and oxygen—favourable for the survival, growth and reproduction of a given species.

Marine protected area (MPA): A designated ocean zone where human activities are regulated to conserve marine biodiversity and sustain ecosystem services.

Blue carbon: Carbon captured and stored in coastal and marine ecosystems, such as mangroves, seagrasses and salt marshes, which can be valued for climate mitigation purposes.

References

1. Opening the door to multi-year marine habitat forecasts. Nature Communications (2024).
2. Climate change affects the distribution of diversity across marine food webs. Global Change Biology (2023).
3. Building climate resilience, social sustainability and equity in global fisheries. npj Ocean Sustainability (2023).
4. Geolocated fish spawning habitats. Scientific Data (2024).
5. Projected change in global fisheries revenues under climate change. Scientific Reports (2016).
6. Marine heatwaves exacerbate climate change impacts for fisheries in the northeast Pacific. Scientific Reports (2020).
7. Emerging Adaptation Approaches for Climate-Ready Fisheries Management. Oceanography (2014).