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प्रश्न
Study the graph given below:
As per Alexander von Humboldt, what do the symbols S, A, Z and C in the graph stand for, in respect of a species and area relationship?
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उत्तर
On a logarithmic scale, the relationship is a straight line described by the equation,
log S = log C + Z log A
where,
S = Species richness
A = Area
Z = slope of the line (regression coefficient)
C = Y-intercept
संबंधित प्रश्न
Give three hypotheses for explaining why tropics show greatest levels of species richness.
Maximum species richness is observed in the ______.
With reference to graph select the correct alternative
Which of the following is an observation of Alexander von Humboldt's documented pattern in ecology?
The graph of species richness and area for a number of taxa like angiospermic plants, freshwater fishes, and birds is found to be ______.
Which of these is true about tropical environments?
Is it possible that productivity and diversity of a natural community remain constant over a time period of, say one hundred years?
The relation between species richness and area for a wide variety of taxa turns out to be a rectangular hyperbola. Give a brief explanation.
Write the inference drawn by Alexander von Humboldt after his extensive explorations of South American jungle.
Match the scientist in column I with their contribution in column II and choose the correct option.
| Column I | Column II | ||
| i. | Alexander Van Humboldt | a. | Estimated 7 million species round the globe |
| ii. | Robert May | b. | Rivet popper hypothesis |
| iii. | David Tillman | c. | Species Area Relationship |
| iv. | Paul Ehrlich | d. | Productivity stability hypothesis |
