Comprehension

A biologist surveyed islands of different sizes and consolidated the results in the form of the data given below. Study the data carefully and answer the questions that follow.


 

Question: 1

What pattern do you observe in the data of islands (Area vs Mammalian species)? 
 

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This holds true up to a certain limit; after that, the curve levels off.
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Solution and Explanation

Step 1: Understanding the Concept:
Species-Area relationship.

Step 2: Detailed Explanation:
As the area increases from 1 to 1000 \(km^2\), the number of species increases from 5 to 150.
The pattern shows that as we explore a larger area, we find more species.

Step 3: Final Answer:
Direct correlation between Area and Species count.
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Question: 2

Name the scientist who proposed the concept of relationship between area and species.

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He is also famous for Humboldt's Current in oceanography.
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Solution and Explanation

Step 1: Understanding the Concept:
Pioneer of Biogeography.

Step 2: Detailed Explanation:
Alexander von Humboldt explored South American jungles and proposed this mathematical relationship.

Step 3: Final Answer:
Alexander von Humboldt.
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Question: 3

Write the mathematical expression for this relationship.

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On a log-log scale, this relationship is a straight line.
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Solution and Explanation

Step 1: Understanding the Concept:
The species-area relationship follows a power function.

Step 2: Detailed Explanation:
\[ S = CA^z \]
Where \(S\) = Species richness, \(A\) = Area, \(Z\) = Slope of the line, \(C\) = Y-intercept.

Step 3: Final Answer:
\(S = CA^z\).
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