Question

After an extreme disturbance, what kind of organisms move into the area first?

1) Pioneer species
2) Predators
3) Parasites
4) Decomposers

Answer 1

1) Pioneer species Pioneer species are the first organisms to colonize an area after an extreme disturbance, initiating the process of ecological succession that eventually leads to a climax community.

Step-by-step explanation:

After an extreme disturbance, the kind of organisms that move into the area first are pioneer species. These species are crucial for ecological succession, starting the process of soil formation and creating habitat for other species. Pioneer species, such as bacteria and lichens, can live on bare rock and begin the soil formation process by helping to weather the rock. Over time, this leads to conditions that allow grasses and other plants to grow. Eventually, the successional sequence leads to a more complex community, often culminating in a climax community which will remain stable until the next disturbance.

Pioneer species are the first organisms to colonize a disturbed area after an extreme disturbance. They include bacteria and lichens that can live on bare rock and help weather the rock to form soil. These pioneer species pave the way for other plants and organisms to move into the area. Predators, parasites, and decomposers usually come later in the successional process.