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<p>Hydropower dams, from their construction to their operation, have well-known negative impacts on riverine fish and fishing communities. Yet, they continue to be constructed in bioculturally rich places, including the Brazilian Amazon. We investigated whether two large Amazonian dams on the Madeira River have affected the livelihoods of riverine communities by carrying out 81 in-depth interviews with local knowledge holders from 11 villages. Many of the fishers (&gt;75%) attributed changes in both the river and its fishery to the construction of the dams. However, the perceived changes (e.g., changes to the river level) varied depending on the location of their community relative to the dams. We documented an 84% decrease in fish catch and 64% decrease in income from fishing through time. These results suggest that hydropower development has compromised the income and sustenance of local fishers, leading them to adapt their behavior, which could further compromise remaining fishing stocks.</p>

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Understanding the impacts of hydropower development on people, fish and the environment on the Madeira River of Amazonia, Brazil

  • 期刊论文

  • 发表日期：

    2026年4月11日

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  • Shannon H. Clarke,
  • Maria Clara B. T. Cavalcanti,
  • Vivian M. Nguyen,
  • Taylor D. Ward,
  • Eduardo G. Martins,
  • Michael Power,
  • Gustavo Hallwass,
  • Priscila F. M. Lopes,
  • Steven J. Cooke

摘要

Hydropower dams, from their construction to their operation, have well-known negative impacts on riverine fish and fishing communities. Yet, they continue to be constructed in bioculturally rich places, including the Brazilian Amazon. We investigated whether two large Amazonian dams on the Madeira River have affected the livelihoods of riverine communities by carrying out 81 in-depth interviews with local knowledge holders from 11 villages. Many of the fishers (>75%) attributed changes in both the river and its fishery to the construction of the dams. However, the perceived changes (e.g., changes to the river level) varied depending on the location of their community relative to the dams. We documented an 84% decrease in fish catch and 64% decrease in income from fishing through time. These results suggest that hydropower development has compromised the income and sustenance of local fishers, leading them to adapt their behavior, which could further compromise remaining fishing stocks.