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#resource limitation

2 public questions tagged with this topic.

Niche CD RP CEP

Realized niches smaller primarily due to:

“Competitive interactions” for realized niches smaller primarily due to. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. A niche is the multidimensional set of abiotic conditions, resources, and biotic relationships under which a population can persist. The fundamental niche reflects physiological and resource limits, while the realized niche is modified by competitors, consumers, mutualists, and dispersal barriers. The remaining alternatives—“Mutation rates”, “Genetic variability”, “High resource

Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 13

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Ecosystem Pyramid

What does Liebig’s barrel analogy illustrate?

Liebig’s barrel illustrates limitation by imagining each essential resource as a stave of unequal height. The shortest stave determines how much water the barrel can hold, just as the scarcest resource relative to demand constrains growth. Increasing already abundant resources does not raise production until the limiting one is supplied; limitation may then shift to another resource. The analogy is useful but simplified, because organisms can face co-limitation, substitute some resources, and experience interacting constraints involving nutrients, light, water, and temperature. Standardizing b

Ref: Fundamentals of Ecology, Odum & Barrett, 5th Ed., Ch. 3

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