Marine Ecosystem Dynamics and Fisheries Management

Marine ecosystems are governed by complex interactions among species, environmental drivers and human activities. Fluctuations in ocean temperature, salinity and circulation influence primary productivity and habitat structure, cascading through food webs to impact fish recruitment, growth and survival. Fisheries management seeks to balance extraction with ecosystem conservation by integrating biological dynamics, socioeconomic considerations and governance frameworks. Approaches such as ecosystem-based management account for multi-species interactions, habitat degradation and climate change, aiming to maintain biodiversity, resilience and long-term yield. Key challenges include nonlinear regime shifts in fish populations, shifting baselines driven by cumulative pressures, and teleconnections arising from global trade and climate variability. Sustainable harvesting strategies increasingly incorporate adaptive measures, precautionary limits and multi-scale monitoring to anticipate tipping points, rebuild depleted stocks and safeguard ecosystem services worldwide.

Research from Nature Portfolio

Recent studies have revealed non-linear regime shift dynamics that underlie the success and failure of fisheries recovery strategies. One investigation demonstrated how abrupt changes and hysteresis in heavily fished North Sea stocks can constrain rebuilding efforts despite policy reforms, emphasising context-dependent tipping points under combined fishing and temperature pressure. Complementary work on a Western Baltic cod fishery identified an irreversible low-productivity state driven by unsustainable exploitation and warming, highlighting the need to incorporate non-linear dynamics into management targets and harvest control rules.

Marine Ecosystem Dynamics and Fisheries Management publication trend

The graph below shows the total number of articles in marine ecosystem dynamics and fisheries management across all publications each year (not limited to Nature Index journals).

Technical terms

Regime shift: Abrupt, often persistent, change in ecosystem structure and function in response to perturbations.

Tipping point: Threshold at which small changes in pressure or conditions trigger a large and potentially irreversible system transition.

Density dependence: Regulation of individual growth, reproduction or survival rates by the population density and resource availability.

Telecoupling: Socio-ecological connections linking distant regions through trade flows or environmental change.

Resilience: Capacity of an ecosystem to absorb disturbances and maintain its fundamental structure, processes and services.

References

1. Regime shift dynamics, tipping points and the success of fisheries management. Scientific Reports (2023).
2. Tipping point realized in cod fishery. Scientific Reports (2021).
3. The consequences of density‐dependent individual growth for sustainable harvesting and management of fish stocks. Fish and Fisheries (2023).
4. Telecouplings in Atlantic cod—The role of global trade and climate change. Marine Policy (2023).
5. Resilience assessment in complex natural systems. Proceedings of the Royal Society B (2024).