Botany - Biodiversity and its Conservation Question with Solution | TestHub
Alexander von Humboldt is associated with
Species–area relationship
Within a region, species richness increases with the increasing limited explored area.
Increased diversity contributes to higher productivity.
Species diversity increases with the loss of keystone species.
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Answer:
Solution:
The great German naturalist and geographer Alexander von Humboldt observed that within a region, species richness increases with increasing explored area but only up to a limit. In fact, the relation between species richness and area for a wide variety of taxa (angiosperm plants, birds, bats, freshwater fishes) turns out to be a rectangular hyperbola. On a logarithmic scale, the relationship is a straight line described by the equation
logS = logC + Z logA
where S = Species richness, A = Area, Z = slope of the line (regression coefficient), C = Y-intercept.
The increased diversity contributes to higher productivity was the idea of David Tillman in his long term ecosystem experiments using outdoor plots. Species diversity decreases with the loss of keystone species.
