An organism’s niche includes the range of abiotic and biotic conditions it can tolerate. 

In the case of the cottontail rabbit, its niche includes the ranges of temperature and humidity that it can tolerate, the plants that it eats, and the predatory hawks and coyotes with which it coexists.

TLS Online TPP Program

#Id: 8006

#XL - T Zoology

The differentiation of niches that enables similar species to coexist in a community is called resource partitioning.

TLS Online TPP Program

#Id: 8009

#XL - T Zoology

          Richard hypothesis 

            

TLS Online TPP Program

#Id: 8010

#XL - T Zoology

Resource partitioning promote coexist  of ecologically similar species

TLS Online TPP Program

#Id: 8011

#XL - T Zoology

                                   Richard hypothesis 

d/w = resource separation ratio.

d/w < 1, species cannot coexist;

1 < d/w < 3, there will be some competition between species

d/w > 3, species coexist harmoniously

TLS Online TPP Program

#Id: 8013

#XL - T Zoology

                     Proportional similarity analysis

TLS Online TPP Program

#Id: 8014

#XL - T Zoology

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

While those greater than 0.70 indicate competitive exclusion.