The greater proportion of far-red light converts more Pfr to Pr, and the ratio of Pfr to total phytochrome (Pfr/Ptotal) decreases.

TLS Online TPP Program

#Id: 3056

#Unit 10. Ecological Principles

Larger populations are more resistant to extinctions.

Greater ranges of habitats promote increased speciation rates.

TLS Online TPP Program

#Id: 3057

#Unit 10. Ecological Principles

Fast generation and high mutation rate in tropical leads to greater evolution rate. 

TLS Online TPP Program

#Id: 3058

#Unit 10. Ecological Principles

Area is directly proportional to the number of species.

Tropical have highest species due to the area.

TLS Online TPP Program

#Id: 3059

#Unit 10. Ecological Principles

The species-area hypothesis S = c Az

TLS Online TPP Program

#Id: 3060

#Unit 10. Ecological Principles

z values are often taken to represent the slope of the relationship between species richness and area.

TLS Online TPP Program

#Id: 3061

#Unit 10. Ecological Principles

The constant c is often thought of as the number of species per unit area. 

It is affected by many factors.