Who confirmed communities with more species tend to be more stable than those with less species ?

Options

A. Alexander von Humboldt
B. David Tilman
C. Paul Ehrlich
D. Edward Wilson

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks who confirmed that communities with more species tend to be more stable than those with fewer species. This concept relates to biodiversity and ecological stability.

2. **Identifying Key Concepts**: The key concepts here are "species diversity" and "stability of communities." Generally, higher species diversity in an ecosystem is associated with greater resilience and stability.

3. **Reviewing Ecological Theories**: Various ecologists have studied the relationship between species diversity and ecosystem stability. It is important to identify who specifically made this confirmation.

4. **Considering Ecologists**: The question mentions four ecologists, but we need to focus on the one who is known for this particular assertion. The names mentioned include Alexander von Humboldt and David Tilman.

5. **Identifying the Correct Ecologist**: Among the ecologists listed, David Tilman is recognized for his research that supports the idea that ecosystems with higher biodiversity are more stable.

6. **Conclusion**: Therefore, the correct answer to the question is **David Tilman**.

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