Which of the statements are in accordance with the observation of geographer Alexander Von Humboldt? I. Within a region species, richness increases with increasing explored area but within a limit. II. The relation between species richness and area is a rectangular hyperbola. III. The richness of species decreases with the increasing explored area. IV. There is no relation between the explored area and species richness.

Question

Which of the statements are in accordance with the observation of geographer Alexander Von Humboldt? I. Within a region species, richness increases with increasing explored area but within a limit. II. The relation between species richness and area is a rectangular hyperbola. III. The richness of species decreases with the increasing explored area. IV. There is no relation between the explored area and species richness. (A) I and II only (B) I, III and IV (C) II and IV (D) II and III

Tardigrade Admin · Accepted Answer

According to geographer Alexander von Humboldt, with increased area species richness also increases. According to him, a rectangular hyperbola represents the relation between species richness and area for a wide variety of taxa. He observed that within a region species richness increased with increasing explored area but only up to a limit. But on a logarithmic scale, a straight line represents this relationship described by the equation log S = log C + Z log A. S = Species richness A= Area Z = slope of the line (regression coefficient) C = Y-intercept.