Abalone Fishery Management and Conservation Strategies

Abalone populations worldwide have long been subject to intense fishing pressure, climatic stressors and habitat degradation. Effective management hinges on understanding species biology—slow growth, late maturation and density‐dependent reproduction—and the socio-economic drivers of exploitation. Contemporary strategies combine regulated harvesting, spatial zoning and proactive restocking to maintain viable stocks. Regulatory tools include minimum legal sizes, total allowable catch limits and temporal closures aligned with reproductive cycles. Spatial management units, defined by ecological productivity, help to prevent serial depletion by tailoring regulations to local population dynamics. Conservation measures extend beyond harvest control, encompassing habitat protection, kelp forest restoration and sea-urchin population control to bolster recruitment and juvenile survival. Advances in decision frameworks allow managers to evaluate multiple indicators—stock density, catch per unit effort and length‐frequency data—within adaptive cycles that engage stakeholders and integrate traditional ecological knowledge. Global assessments have underscored the heightened extinction risk of commercially exploited species, prompting red‐listing and international cooperation. Aquaculture and ranching initiatives, when coupled with hatchery supplementation, offer potential for stock enhancement but require careful genetic and disease management. As climate change continues to alter oceanographic conditions, adaptive management informed by spatio-temporal modelling and long-term monitoring will be essential to safeguard both the biodiversity and the livelihoods dependent on abalone fisheries.

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Abalone Fishery Management and Conservation Strategies publication trend

The graph below shows the total number of articles in abalone fishery management and conservation strategies across all publications each year (not limited to Nature Index journals).

Technical terms

Catch per unit effort (CPUE): A measure of fishing efficiency, calculated as the amount of catch per unit of fishing effort, used as an index of relative abundance.

Management Strategy Evaluation (MSE): A simulation framework that tests the performance of alternative management rules against ecological and operational uncertainties.

Meta-population: A group of spatially separated populations of the same species that interact through dispersal, relevant for designing spatial management units.

Minimum Legal Length (MLL): The smallest size at which individuals may legally be retained, intended to protect immature cohorts and ensure spawning participation.

Total Allowable Catch (TAC): The maximum quantity of catch permitted for a fishery or management unit over a specified period, aiming to prevent overexploitation.

References

1. Using species distribution models to assess the long‐term impacts of changing oceanographic conditions on abalone density in south east Australia. Ecography (2020).
2. Abalones at risk: A global Red List assessment of Haliotis in a changing climate. PLOS ONE (2024).
3. Introduction of spatial management in a temperate abalone (genus Haliotis) fishery: What can be learned from spatial variability in catches?. Fisheries Management and Ecology (2022).
4. An indicator‐based decision framework for the northern California red abalone fishery. Ecosphere (2019).