TLS Online TPP Program

#Question id: 12104


Two barnacles, Balanus and Chthamalus, can both survive on the lower rocks just above the low-tide line on the Scottish coast, but only Balanus actually does so, with Chthamalus adopting a higher zone. Which of the following best accounts for this niche separation?

#Unit 10. Ecological Principles
  1. Competitive exclusion 
  2. Predation of Chthamalus by Balanus
  3. Cooperative displacement 
  4. Primary succession