Berger-Parker complement index is that it is very easy to compute.  Values of DBPC vary from 0 to 1.

DBPC=1 - DBP

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#Unit 10. Ecological Principles

Intraspecific competition - Competition among individuals of the same species. 

Interspecific competition - Competition among individuals of different species

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#Unit 10. Ecological Principles

TLS Online TPP Program

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#Unit 10. Ecological Principles

Liebig’s law of the minimum Law stating that a population increases until the supply of the most limiting resource prevents it from increasing further. 

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#Unit 10. Ecological Principles

Leibig’s law of the minimum assumes that each resource has an independent effect on the growth of a population.In other words, it assumes that if a given resource limits the growth of individuals and populations, increasing the availability of other resources will not improve such growth.

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#Unit 10. Ecological Principles

Coexist of species 

They Do Not Occupy Identical Niches

Species may partition resources

Morphological differences

Realized niche is less than fundamental niche 

Greater strength intraspecific competition than interspecific competition 

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#Unit 10. Ecological Principles

Competitive exclusion principle The principle that two species cannot coexist indefinitely when they are both limited by the same resource.