Alexander Von Humboldt described for the first time:

Step-by-step solution

Species–Area relationships: German naturalist and geographer Alexander von Humboldt while exploring the South American jungles, found that within a region species richness increased with increasing explored area but only up to a limit. The relationship between species richness and area turned out to be a rectangular hyperbola for a wide variety of organisms like angiosperm plants, birds bats and freshwater fishes. The relationship is a straight line on a logarithmic scale. It is mathematically expressed as: S