Question

For frugivorous (fruit-eating) birds and mammals in the tropical forests of different continents, the slope of the species-area relationship is found to be approximately ______.

विकल्प

• 0.6

• 1.3

• 1.15

• 1

Answer 1

For frugivorous (fruit-eating) birds and mammals in the tropical forests of different continents, the slope of the species-area relationship is found to be approximately 1.15.

Explanation:

The species-area relationship is a straight line on a logarithmic scale, as defined by the equation.

log S = log C + Z log A

where, S = species richness, A = area, Z = slope of the line (regression coefficient), C = Y-intercept.

The ecologist determined that the value of Z falls between 0.1 and 0.2. However, when we examine the species-area relationship over very vast areas, such as entire continents, we find that the slope of the line is substantially steeper (Z values ranging from 0.6 to 1.2). For example, the slope of frugivorous (fruit-eating) birds and mammals in tropical woods on several continents is found to be 1.15.