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February 2025
Current Biology. - XX(2025)XX, XX-XX

New fish migrations into the Panama Canal increase likelihood of interoceanic invasions in the Americas

Gustavo A. Castellanos-Galindo; Diana M.T. Sharpe; D. Ross Robertson; Victor Bravo; Jonathan M. Jeschke; Mark E. Torchin

The authors have compared the fish communities of Lake Gatun in the Panama Canal before and after the canal’s expansion in 2016: Marine fish species  now make up 76 percent of the total biomass of the fish population and are primarily large predatory fishes. The lake’s food web is changing and local fisheries are impacted. There is also an increased risk of fishes colonizing the opposite ocean.

February 2025
Hydrological Processes. - 39(2025)2, Art. e70084

Electrical Conductivity as a Tracer for Seasonal Reverse Flow and Transport of Trace Organic Contaminants in River Spree

Christoph J. Reith; Jörg Lewandowski; Anke Putschew; Tobias Goldhammer; Josefine Filter; Stephanie Spahr

The authors studied if the electrical conductivity can serve as a hydrological tracer to capture the intensity and duration of seasonal reverse flow phases in a specific section of River Spree. Moreover, they studied the effect of upstream transport on chemical water quality, i.e. on trace organic contaminant during these reverse flow phases.