Question

Why do moderate levels of disturbance result in an increase in community diversity?

Answer 1

Due to moderate disturbance, habitats are opened up for less competitive species thus increasing the diversity of a community.

What are the factors affecting diversity?

• Diversity is the variation in different life forms within a community, ecosystem or biome. Moderate disturbances result in loss of number of competitive species thus opening up habitat for less competitive species.
• According to intermediate species diversity, moderate disturbances increase the diversity of an area by maintaining the numbers of both more competitive and less competitive species.
• When disturbance is low, more competitive species dominate the community leading to loss of less competitive ones.
• When disturbance is high like deforestation, forest fires, it can result in loss of all species.
• Thus at moderate disturbances, diversity is maximum because species at all ecosystem levels can coexist.

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