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SIL Proceedings, 1922-2010
Internationale Vereinigung für Theoretische und Angewandte Limnologie: Verhandlungen
Volume 23, 1988 - Issue 1
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II. Chemical Limnology

The Baule-Mitscherlich limiting factor equation evaluated in freshwater habitats

Pages 103-105 | Published online: 01 Dec 2017
 

Summary

The Baule-Mitscherlich limiting factor equation, slightly modified (base 2 instead of e) has been evaluated for freshwater lakes sampled in the USEPA National Eutrophication Survey (1972–76). The four factors used were N, P, C, and light. N and P were expressed in mg · l−1, C was expressed as titratable base (meq · 1−1) and light supply as the ratio of euphotic zone thickness to mean depth. In the equation:

M = Mo (1–2−knN) (1–2-−kpp) (1–2−kpC (1–2−KeEE)

When M was expressed as chlorophyll (mg · m−3) the values of the four k's were: kn = 1, kp = 8, kc = 2, ke = 4, and Mo = 400. The departures of the observed chlorophyll values from those predicted by the equation can be indicated by using the operators x/ ÷ 2.

The equation can also be used to predict:

(1)

Phytoplankton volume (Mo = 200 ml · m−3)

(2)

Photosynthetic yield (Mo = 160 mmol C fixed · m−3 · hr −1)

(3)

Areal photosynthesis (Mo = 1.6 mol C fixed · m−2 · day −1) and

(4)

Community metabolism (Mo = 2 mol C processed · m −2 · day −1).

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