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<p>Climate change is widely recognized to contribute to marine warming, acidification, and deoxygenation, while the frequency of harmful algal blooms (HABs) is increasing, causing severe ecological disruptions. Eutrophic regions are increasingly exposed to thermal extremes, hypoxic conditions, and low pH levels and may therefore serve as sensitive indicators of ecosystem responses to climate forcing. HAB occurrence reflects interactions among nutrient availability, temperature variability, and hydrodynamic conditions. Future work should aim to quantify the relative contributions of interacting environmental drivers to improve the robustness of predictive models of HAB dynamics under future climate scenarios. Climate change is likely to amplify HAB intensity and spatial distribution, although regional outcomes depend on interacting environmental drivers. These findings have implications for fisheries management, aquaculture sustainability, public health issues and long-term monitoring. Monitoring strategies should ideally prioritize ecosystem functional responses and early-warning indicators of climatic variability.</p>

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Climate change drivers of harmful algal blooms in marine and coastal ecosystems

  • 期刊论文

  • 发表日期：

    2026年7月23日

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  • Balaji Prasath Barathan,
  • Ranjit Kumar Sarangi,
  • Ketankumar Yogi,
  • R. Mohanraju

摘要

Climate change is widely recognized to contribute to marine warming, acidification, and deoxygenation, while the frequency of harmful algal blooms (HABs) is increasing, causing severe ecological disruptions. Eutrophic regions are increasingly exposed to thermal extremes, hypoxic conditions, and low pH levels and may therefore serve as sensitive indicators of ecosystem responses to climate forcing. HAB occurrence reflects interactions among nutrient availability, temperature variability, and hydrodynamic conditions. Future work should aim to quantify the relative contributions of interacting environmental drivers to improve the robustness of predictive models of HAB dynamics under future climate scenarios. Climate change is likely to amplify HAB intensity and spatial distribution, although regional outcomes depend on interacting environmental drivers. These findings have implications for fisheries management, aquaculture sustainability, public health issues and long-term monitoring. Monitoring strategies should ideally prioritize ecosystem functional responses and early-warning indicators of climatic variability.