Area where two ecosystem overlap each other:

Options

A. Ecotone
B. Niche
C. Edge effect
D. Ecotypes

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks for the term that describes the area where two ecosystems overlap. This is a key concept in ecology and is essential for understanding how different ecosystems interact.

2. **Identifying the Correct Term**: The area where two ecosystems overlap is known as an **ecotone**. This term is crucial in ecology as it signifies a transition zone between two distinct ecosystems.

3. **Characteristics of an Ecotone**:
- Ecotones can vary in width; they may be narrow or wide.
- An example of an ecotone is the area between a field and a forest, where characteristics of both ecosystems can be observed.

4. **Diversity in Ecotones**: Ecotones are often characterized by high biodiversity. This means that these areas can support a variety of species from both ecosystems, as well as unique species that thrive specifically in the ecotonal environment.

5. **Differentiating from Other Terms**:
- **Niche**: Refers to the functional role of an organism within an ecosystem, not the overlap of ecosystems.
- **Edge Effect**: Describes changes in population or community structure at the boundary of two habitats, which can occur in ecotones but is not synonymous with the term.
- **Ecotype**: Refers to genetically distinct varieties within a species that have adapted to specific environmental conditions, which is also not the same as an ecotone.

6. **Conclusion**: Based on the definitions and characteristics discussed, the correct answer to the question is **ecotone**.

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