Abstract
Analysis of the historical record shows that reductions in guano production in the eastern tropical Atlantic Ocean were not related to El Niño events in the Pacific. Guano production in the Atlantic was negatively correlated with guano production in the Pacific. Significant reductions in guano production in the Atlantic occurred 1 to 4 years after increases in guano production in the Pacific. Negative association is consistent with the hypothesis that global shifts in weather associated with the Southern Oscillation affect guano production.
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Schneider, D., Duffy, D.C. Historical variation in guano production from the Peruvian and Benguela upwelling ecosystems. Climatic Change 13, 309–316 (1988). https://doi.org/10.1007/BF00139812
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DOI: https://doi.org/10.1007/BF00139812