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NEETBotanyBiodiversity and its Conservation

What is the relationship between species richness and total biomass?

Options

  1. AIncreased species richness decreases total biomass
  2. BThe relationship is not understood
  3. CIncreased species richness increases total biomass
  4. DThe relationship is variable and depends on the ecosystem

Correct answer

C. Increased species richness increases total biomass

Step-by-step solution

A stable community should not show too much variation in productivity from year to year; it must be either resistant or resilient to occasional disturbances (natural or man-made), and it must also be resistant to invasions by alien species. We don’t know how these attributes are linked to species richness in a community, but David Tilman’s long-term ecosystem experiments using outdoor plots provide some tentative answers. Tilman found that plots with more species showed less year-to-year variation in total biomass

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