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  • (a) Identify the features of a stable biological community. (b) How did David Tilman's findings link stability of a biological community to its species richness

(a) Identify the features of a stable biological community.

(b) How did David Tilman's findings link stability of a biological community to its species richness?

 

 

 

 
 
 
 
 

Answers (1)

a)Features of a stable community

  1. A stable community should not show too much variation in productivity from year to year
  2.  It must be either resistant or resilient to occasional disturbances (natural or man-made)
  3.  It must also be resistant to invasions by alien species.

b) David Tilman’s long-term ecosystem experiments using outdoor plots provide some tentative answers to how stability of biological community is linked to its species richness. Tilman found that plots with more species showed less year-to-year variation in total biomass. He also showed that in his experiments, increased diversity contributed to higher productivity.

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Priyanka Kumari

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