Name: Ecosystem Services
Uploaded: 2019-07-19
Duration: 8 min 16 s
Description: Ecosystem services are the direct and indirect contributions of ecosystems to human well-being. Let's watch the video to learn more about them.

Question

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Accepted Answer

Ecological succession is described as the steady and gradual change that takes place in a species of a given area until a stable stage is reached, concerning the changing environment. The community that is established at the site, as a result, is referred to as Climax Community. This process continues, and successive communities develop one after another over the same area until the terminal final community again becomes more or less stable for some time.

This ecological succession involves various steps:

NUDATION: It is the first phase of succession. The development of a bare area is the initial prerequisite.

INVASION: Also referred to as migration. In this process, the incoming of seeds, pollens, spores, and other reproductive propagules takes place.

ECESIS: In this process, the initial establishment of the plant species occurs. When the migrants enter a new area, they germinate, grow and reproduce there. All the migrants reaching the new area must stabilize. The germination may be affected by several external and internal factors. Dormancy may be a barrier to germination.

COMPETITION: Competition takes place between several species that begin to establish.

REACTION: It is one of the most important steps. It decides the mechanism of the modification of the environment by the influence of living organisms.

STABILIZATION: As the name suggests, it is the final stage of development. In this stage, the final stable community gets established completely. They are the ones that are best adapted to the succession.

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