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The El Niño-Southern Oscillation (ENSO) negatively impacts anchovy fisheries in South America primarily by altering ocean temperatures and currents. During an El Niño event, warmer waters reduce nutrient upwelling, which diminishes the food supply for anchovies. This disruption can lead to decreased anchovy populations, affecting both the fishery's yield and the livelihoods of those who depend on it. Additionally, changes in environmental conditions can result in shifts in fish distribution, making it harder for fishermen to locate and catch anchovies.

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1w ago

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