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Luxury Consumption of Phosphorus by Five Cladophora Epiphytes in Lake Huron

R. Jan Stevenson and E. F. Stoermer
Transactions of the American Microscopical Society
Vol. 101, No. 2 (Apr., 1982), pp. 151-161
Published by: Wiley on behalf of American Microscopical Society
DOI: 10.2307/3225768
Stable URL: http://www.jstor.org/stable/3225768
Page Count: 11
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Luxury Consumption of Phosphorus by Five Cladophora Epiphytes in Lake Huron
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Abstract

The stainable polyphosphate bodies in five species of algae epiphytic on Cladophora glomerata were enumerated. The algal populations, two species of diatoms, two species of blue-green algae, and a red alga, were collected at various distances from a point source of phosphorus enrichment in Lake Huron. Populations assayed had accumulated polyphosphate bodies and exhibited different levels of maximum polyphosphate body abundance. Numbers of polyphosphate bodies per unit cell volume were least in the diatoms, greatest in the blue-greens, and intermediate in the red alga. No significant differences were found between subpopulations of the same species growing in different portions of the epiphyte community matrix at one location. The subpopulation growing at the location farthest from the point source of phosphorus had substantially fewer polyphosphate bodies than subpopulations of the same species closer to the point source.

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