Short notes on the Types of Ecological Succession

ADVERTISEMENTS:

Ecological succession is classified on the basis of various parameters of classification based on time of succession.

(i) Primary succession: This type of succession starts on a substratum where there is no living matter. The living organisms that establish themselves for the first time on such a substratum are called pioneers or primary colonisers. The community thus formed is called primary community.

(ii) Secondary succession: Here the succession starts on a substratum where there was living matter previously, but has disappeared due to some natural calamity.

ADVERTISEMENTS:

Classification based on cause:

(i) Autogenic succession: When the organisms of a community modify the environment in such a way that the community itself is replaced by a new one, the succession is called autogenic.

(ii) Aerogenic succession: Here the causative factor behind sue- cession is not the community itself but the physical surrounding.

Classification based on nutritional status:

ADVERTISEMENTS:

Autotrophic succession: In this type, the dominant organisms are the autotrophs; and it starts in an inorganic environment.

Heterotrophic succcssion: Here the dominant organisms are heterotrophs; and it starts in an organic environment, where the energy and organic matter gradually decreases.

Classification based on the habitat where succcssion starts: Succession may start in aquatic, xeric, saline, sandy, rocky habitats and -accordingly successions can be classified as hydrosere, xerosere, halosere, psamosere and lithoserc respectively.

Web Analytics
Kata Mutiara Kata Kata Mutiara Kata Kata Lucu Kata Mutiara Makanan Sehat Resep Masakan Kata Motivasi obat perangsang wanita