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Q: Which ecologist demonstrated in a long-term experiment on external Land mass that biodiversity is of central importance for productivity, stability, resistance to invasion of ecosystems, and fertility of their soil?
  • A. Karl Mobius
  • B. Edward Osborne Wilson
  • C. Herbert Spencer
  • D. David Tilman
Correct Answer: Option D - David Tilman is an American ecologist known for his work in the field of biodiversity and ecosystem functioning. In his long-term ecological research, Tilman showed that more diverse ecosystems are more productive, stable, and resistant to invasions, and they have healthier soils. His experiments involved manipulating species richness in grassland ecosystems and observing the effects over time.
D. David Tilman is an American ecologist known for his work in the field of biodiversity and ecosystem functioning. In his long-term ecological research, Tilman showed that more diverse ecosystems are more productive, stable, and resistant to invasions, and they have healthier soils. His experiments involved manipulating species richness in grassland ecosystems and observing the effects over time.

Explanations:

David Tilman is an American ecologist known for his work in the field of biodiversity and ecosystem functioning. In his long-term ecological research, Tilman showed that more diverse ecosystems are more productive, stable, and resistant to invasions, and they have healthier soils. His experiments involved manipulating species richness in grassland ecosystems and observing the effects over time.