Missouri River Sturgeon need more oxygen to reproduce. Dead zones, dams implicated.

ENN
Jan 24, 2015, 8:32 am41 pts
Pallid sturgeon come from a genetic line that has lived on this planet for tens of millions of years; yet it has been decades since anyone has documented any of the enormous fish successfully producing young that survive to adulthood in the upper Missouri River basin.Now, fisheries scientists with the U.S.…

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