Word: limnologist
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Dates: during 1960-1969
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...view of Indiana University Limnologist David Frey, 45, who last week passed sentence on Douglas Lake, almost every fresh-water lake in the world awaits the same unhappy fate. Like humans, says Frey, lakes grow old and inevitably die, in a predictable life span that man himself is abbreviating...
...this cumulative process, Frey predicts, the oxygen content eventually will fall past the point-three parts oxygen to one million parts water-below which deepwater fish cannot survive. Limnologist Frey has discovered evidence of this in an increasing population of the red "blood" midge, a mosquitolike larva that can get along fine on far less oxygen than its more demanding green and brown brothers. In Douglas Lake, Frey's crew also brought up a few "phantom" midges, near-transparent larvae that can reach adult stage without any oxygen at all for long periods at a time...
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