Elton’s hypothesis suggests there is a linear correlation between species richness and community services

TLS Online TPP Program

#Id: 8014

#Unit 10. Ecological Principles

Proportional similarity values of less than 0.70 have been taken to indicate possible coexistence

While those greater than 0.70 indicate competitive exclusion.

TLS Online TPP Program

#Id: 8015

#Unit 10. Ecological Principles

Character displacement

Morphological differences in two closely related species present in same geographical area while similar morphology when present at different geographical are

1. Niche diversification

2. Co-existence of many species

3. Evolutionary program

TLS Online TPP Program

#Id: 8016

#Unit 10. Ecological Principles

TLS Online TPP Program

#Id: 8017

#Unit 10. Ecological Principles

Ecological compression

Short term evolutionary response

More number of species coexist together

Non inheritable trait

Not change habitat but reduce the food range

TLS Online TPP Program

#Id: 8018

#Unit 10. Ecological Principles

                        Ecological compression

TLS Online TPP Program

#Id: 8019

#Unit 10. Ecological Principles

ECOLOGICAL RELEASE

Ecological release is the expansion of range, habitat, and/or  resource usage by an organism.