ArticleEcology and evolution2025
Ostracod Genetic Variability in Response to Lake Level-Driven Salinity Dynamics in Nam Co, Central Tibetan Plateau, in the Past Two Millennia.
Article in Ecology and evolution, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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13 authors.
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Abstract
Sedimentary ancient DNA metabarcoding has revolutionized the reconstruction of past lake biodiversity, providing insights into species assemblages spanning thousands of years. We apply this approach to investigate ostracod community dynamics and genetic diversity in a two-millennia sedimentary record from Nam Co, the third largest lake on the Tibetan Plateau, where hydrological fluctuations have driven shifts in salinity and habitat conditions. Using stratigraphic sedaDNA analyses, temporal diversity indices, and environmental proxies, we linked ostracod assemblages to lake-level and climatic changes. Species richness peaked between 628 and 765 ce during moister conditions with increased minerogenic influx, and again since the mid-1970s amid recent warming and glacier-melt-driven lake-level rise. In the earliest sedaDNA record (~230 bce),
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