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Question
Write the inference drawn by Alexander von Humboldt after his extensive explorations of South American jungle.
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Solution
Alexander von Humboldt observed that within a region species richness increased 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.
RELATED QUESTIONS
Latitudinal and altitudinal gradient is shown by which of the following habitat(s)?
On a log scale the relationship of species richness and area becomes linear (straight line) and is given by the equation.
Select the correct alternative for x and y.
Which of the below mentioned regions exhibit lees seasonal variations?
Which of these is true about tropical environments?
Which of these is true about tropical environments?
What does the term ‘Frugivorous’ mean?
Lesser variation in biomass production over a period of time is called ______.
The species-area relationship is represented on a log scale as ______.
Tropical regions show greatest level of species richness because -
- Tropical latitudes have remained relatively undisturbed for millions of years, hence more time was available for species diversification.
- Tropical environments are more seasonal.
- More solar energy is available in tropics.
- Constant environments promote niche specialization.
- Tropical environments are constant and predictable.
Choose the correct answer form the options given below:
