Question

In rocky intertidal communities of the American Pacific Coast the starfish Pisaster were removed for an experimental purpose.

1. How did this affect the invertebrates in that region? 

2. List out the important role of predators in nature.

Answer 1

1. Pisaster is an important predator in the intertidal area. When Pisasters were removed, more than 10 invertebrate species became extinct because of inter specific competition.

2. important role of predators in nature:

• Predation helps to transfer energy to higher trohpic level from plants,
• Agricultural pest control or biological control is based on the ability of predator that important in regulating prey population.