Question

Alexander Von Humbolt described for the first time:

• A. Laws of limiting factor
• B. Species area relationships
• C. Population Growth equation
• D. Ecological Biodiversity

Answer 1

The Correct Option is B

The question asks about what Alexander Von Humbolt first described, and the correct answer is "Species area relationships." Let's break down the information and understand why this is correct.

1. **Understanding Species Area Relationships**:
   • Alexander Von Humboldt is a renowned naturalist and explorer known for studying the distribution of species across different geographical areas.
   • The "Species Area Relationship" (SAR) is an ecological concept that describes the relationship between the area of a habitat and the number of species it can support.
2. **Explanation**:
   • The SAR is one of the first quantitative laws in ecology and is considered critical for biodiversity understanding.
   • The formula for the species-area relationship is often expressed as S = cA^z, where:
     • S is the number of species,
     • c is a constant,
     • A is the area,
     • z is the slope of the line in a log-log plot of area versus species.
3. **Ruling Out Other Options**:
   • Laws of Limiting Factor: Proposed by Justus von Liebig, which states that the most limiting factor determines growth, not Humboldt.
   • Population Growth Equation: Typically associated with ecology and demography, not specific to Humbolt.
   • Ecological Biodiversity: A broad concept covering variety and variability of life forms on Earth, not something Humboldt uniquely described first.

Therefore, the correct choice is indeed that Alexander Von Humboldt first described the "Species area relationships". This foundational ecological principle helps understand biodiversity distribution patterns and conservation efforts.