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  • The relation between species richness and area for a wide variety of taxa turns out to be a rectangular hyperbola. Give a brief explanation.

The relation between species richness and area for a wide variety of taxa turns out to be a rectangular hyperbola. Give a brief explanation.

Answers (1)

Species richness in any area depends on various factors. Some of them are as follows:

(a) Balance between immigration and extinction

(b) Rate and magnitude of disturbance in small area Vs large area

(c) Predator-prey dynamics

(d) Clustering of individuals of the same species because of dispersal limitations.

When the area increases up to a certain extent, the number of species increases, as shown by the graph, this can happen because of the reduced rate of disturbance and because of favourable predator-prey dynamics. Once the area increases beyond the threshold level, there is no growth in the number of species. This can happen because of dispersal limitations.

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