Climate Change Impacts on Freshwater Fisheries Management

Freshwater fisheries are experiencing profound shifts due to rising temperatures, altered hydrological regimes and increased frequency of extreme weather events. Elevated water temperatures accelerate metabolic rates in many fish species, leading to higher oxygen demand and reduced habitat suitability. Changes in precipitation patterns and flow regimes disrupt spawning cues, impair larval survival and exacerbate sedimentation and nutrient loading. These physical alterations drive range shifts towards cooler headwaters or higher latitudes, often fragmenting populations and undermining genetic diversity. Concurrently, communities that depend on inland fisheries for food security and livelihoods face heightened vulnerability as catches become less predictable. Effective management must integrate ecosystem-based approaches, combining real-time monitoring, adaptive harvest regulations and habitat restoration to maintain resilience. Socio-economic dimensions require strengthening institutional governance and bolstering community adaptive capacity through diversified livelihoods and participatory decision-making. Forecasting tools that incorporate physiological thresholds and socio-ecological feedbacks are essential to anticipate long-term trends and to design robust conservation strategies. Globally, the need for cross-boundary collaboration is paramount as many river basins and lakes span political borders. By aligning policy frameworks with scientific advances in climate impact modelling, managers can safeguard freshwater biodiversity, ensure equitable access to resources and support sustainable development in an era of escalating climatic uncertainty.

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Climate Change Impacts on Freshwater Fisheries Management publication trend

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

Technical terms

Adaptive capacity: The ability of communities, institutions or ecosystems to adjust to climate change, moderate potential damage and exploit opportunities.

Vulnerability: The degree to which a socio-ecological system is susceptible to, and unable to cope with, adverse climate impacts.

Phenotypic plasticity: The capacity of an organism to alter its physiology or behaviour in response to environmental change without genetic modification.

Resilience: The ability of a fishery system to absorb disturbances and reorganise while undergoing change, retaining essentially the same function and structure.

Range shift: The movement of species’ geographic distributions in response to changing environmental conditions, particularly temperature and hydrology.

References

1. Evaluation of Small-Scale Fishers’ Perceptions on Climate Change and Their Coping Strategies: Insights from Lake Malawi. Climate (2018).
2. Assessing the Sensitivity of Small-Scale Fishery Groups to Climate Change in Lake Kariba, Zimbabwe. Sustainability (2017).
3. Assessing vulnerability and adopting alternative climate resilient strategies for livelihood security and sustainable management of aquatic biodiversity of Vembanad lake in India. Journal of Water and Climate Change (2020).