Biology Environmental Science

Law of Tolerance

In this article we will discuss Law of Tolerance

  • Law of Tolerance (Shelford’s Law)
  • For each species, there is a range in an environmental factor within which the species function near or at optimum. There are extremes both lower and upper towards which the function of the species is curtailed or inhibited. Shelford pointed out that too much of a certain factor would act as a limiting factor just as well as too little of it as has been stated in the Liebig’s law. This leads to a concept of range of tolerance, which states, ” the distribution of each species is determined by its range of tolerance to variation in each environmental factor.”

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