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Lecture 14 THE BIOSPHERE

Lecture 14 THE BIOSPHERE. The three zones of the lakes. Littoral water is shallow and well lit. diversity greatest here. Limnetic open, sunlit water past the littoral. extends to a depth where photosynthesis is insignificant.

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Lecture 14 THE BIOSPHERE

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  1. Lecture 14THE BIOSPHERE

  2. The three zones of the lakes • Littoral • water is shallow and well lit. • diversity greatest here. • Limnetic • open, sunlit water past the littoral. • extends to a depth where photosynthesis is insignificant. • Communities of phytoplanktons (cyanobacteria, green algae and diatoms) are abundant here.

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