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Solar irradiance and ENSO affect food security in Lake Tanganyika, a major African inland fishery
Food security in a warming world is a grave concern for rapidly growing impoverished populations. Low-latitude inland fisheries provide protein for millions of rural poor, yet the impacts of high-frequency climate oscillations on these aquatic ecosystems are unknown. Here, we present a sub-annual-to-annual resolution paleolimnological reconstruction of upwelling, productivity, and algal composition at Lake Tanganyika, one of Africa's largest land-locked fisheries. The data reveal increases in diatom production at centennial-scale solar irradiance maxima, and interannual variability in upwelling linked to La Nina. Our study shows that interactions between global climatic controls and El Nino-Southern Oscillation teleconnections exert profound influences on the foundation of Lake Tanganyika's food web. Adapting long-term management practices to account for high-frequency changes in algal production will help safeguard inland fish resources.Open access journalThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at [email protected]
Recommended from our members
Solar irradiance and ENSO affect food security in Lake Tanganyika, a major African inland fishery
Food security in a warming world is a grave concern for rapidly growing impoverished populations. Low-latitude inland fisheries provide protein for millions of rural poor, yet the impacts of high-frequency climate oscillations on these aquatic ecosystems are unknown. Here, we present a sub-annual-to-annual resolution paleolimnological reconstruction of upwelling, productivity, and algal composition at Lake Tanganyika, one of Africa's largest land-locked fisheries. The data reveal increases in diatom production at centennial-scale solar irradiance maxima, and interannual variability in upwelling linked to La Nina. Our study shows that interactions between global climatic controls and El Nino-Southern Oscillation teleconnections exert profound influences on the foundation of Lake Tanganyika's food web. Adapting long-term management practices to account for high-frequency changes in algal production will help safeguard inland fish resources.Open access journalThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at [email protected]