Question

Analysis of the species-area relationships indicate the value of Z to be in the range of:

• A. 0.1 to 0.5
• B. 0.5 - 1.1
• C. 0.6 - 1.2
• D. 1.2 - 2.0

Hint:

Understand the physical meaning of $Z$:
A smaller $Z$ value ($0.1$ to $0.2$) means species richness increases slowly with area (typical for small, uniform regions).
A larger $Z$ value ($0.6$ to $1.2$) indicates a much steeper slope, where species richness increases rapidly with area (typical for continental scales with diverse habitats).

Answer 1

The Correct Option is A

Step 1: Species-area relation.
$\log S = \log C + Z\log A$. For most ecological communities, Z lies in the range 0.1 to 0.5.
Answer: 0.1-0.5