As the area increases, species richness

increases exponentially

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increases upto a limit

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decrease

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increases linearly

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Solution

The correct option is B increases upto a limit
Alexander von Humboldt explained the species-area relationship which states that within a region, species richness increased with increasing explored area but only upto a limit. On a logarithmic scale, the relationship is a straight line described by the equation

log S = Log C + Z log A (as shown below diagramatically)
where;
S = Species richness
A = Area
Z = Slope of the line (regression coefficient)
C = Y intercept

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Q. Who observed that within a region, species richness increased with increasing explored area but only upto a limit?

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Q. Read the following statements (A - D) related to species - area relationship and select the correct option stating true (T) and false (F).
A. Explored area plot against species richness gives a rectangular hyperbola.
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C. Species richness increases with decreasing explored area.
D. Alexander von Humboldt proposed the species - area relationship.

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