There are two plowed fields that are both the same size, have the same soil composition and climate. Both fields are surrounded by woodland. In the first field, as succession begins, the pioneer species are pine trees and shrubs. In the second field, the pioneer species are weeds and shrubs. This provides evidence for which model of succession?

Question

Quizplus · Accepted Answer

The fact that different pioneer species are able to establish themselves in each field suggests that both fields are equally suitable for colonization by different species. Therefore, the tolerance model is supported, where initial colonizers do not significantly alter the environment and each successive group of organisms is better adapted to the changing conditions.

There Are Two Plowed Fields That Are Both the Same