Question

The species—area relationship on a logarithmic scale
(log—log scale) is

• A. Sigmoid
• B. Rectangular hyperbola
• C. Straight line/linear
• D. Rectangular parabola

Answer 1

The correct option is C Straight line/linear

Species-area relationship

The relationship between species richness and area says that within a region, species richness increases with increasing explored area only up to a certain limit.

Graphical representation of species area relationship

• Across a wide variety of taxa such as angiosperms, plants, birds, bats, etc., the relation between species richness and area is represented by a rectangular hyperbola curve.
• When this graph is plotted in a logarithmic scale, the relationship is expressed as a straight line which is described by the equation:

$\log S=\log C+Z\log A$

• Where, $S$ is species richness
• $A$ is available area
• $Z$ is slope of the line
• $C$ is Y- intercept

Final answer

(C) Straight line/linear