Researchers find a keystone nutrient recycler in streams

(PhysOrg.com) -- Researchers from the University of Georgia Odum School of Ecology have found that certain neotropical stream ecosystems rely almost entirely on a single fish species known as the banded tetra for the critical nutrient phosphorus. In a paper recently published in the journal Ecology, the researchers, led by Gaston E. “Chip” Small, explain why this particular species plays such a crucial role—and why these stream systems are vulnerable as a result.

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