Primary succession and secondary succession

What are the four stages of secondary succession? What is an example of a secondary succession? What does primary succession begin with? The stages of secondary succession are similar to those of primary succession: insects and weedy plants (frequently from surrounding ecosystems ) are often the first to recolonize the disturbed area, and these species are replaced by hardier plants and animals as time goes on. If this landscape remains undisturbed for a long enough time, the evolving biological community can once again attain a stable ecological structure.

Primary succession occurs in the land where there is no initial vegetation. These existing communities can be cleared by deforestation, burning or other human activity. Secondary succession occurs in a. Taking the example of a hydrosere where the primary succession has been wiped out due to environmental reasons, a secondary succession ensues in the form of a bog. This moss then in the growth of higher species. When natural communities are developed in barren habitat with no soil or extremely less soil, it is called primary succession.

Abiotic factors such as water, win and species like algae and lichen have a significant role to play in primary succession. On a rock where the vegetation has been destroyed by. It occurs in an area which is barren or lifeless. Soil is absent at the beginning of primary succession and the environment is not suitable for sustaining normal life. There is no humus in the.

Soil is present in the area where secondary succession begins. Humus is present before the very beginning. Over time the pioneer organisms (such as moss and lichen) break the rock and as the organisms die and decompose, the soil builds up. It happens when the previous community is lost. It is the kind of ecological succession , which occurs or start from the barren, uninhabited and unoccupied areas, such as the newly formed pon rock, dunes, etc.

In contrast, secondary succession is the re-colonization of a region after a significant disturbance. The end result of succession is the establishment of a climax community. Examples include areas which have been cleared of existing vegetation (such as after tree-felling in a woodland) and destructive events such as fires. For example, a newly quarried rock face or sand dunes. Reproductive structures of the previous occupants are present in the area.

Both primary and secondary succession follows similar stages when becoming colonized by living organisms. The only difference between them is that primary succession requires pioneer species to colonize bare rocks whereas secondary succession requires colonization of an existing but damaged ecosystem. Whilst primary succession takes place when pioneer species inhabit a newly formed substrate lacking in soil and biotic organisms (such as rock formed from lava flow or areas of glacier retreat), secondary succession occurs on a substrate that has previously supported vegetation but has been altered by processes such as fire, hurricanes, floods or human disturbances. This video describes the process of ecological succession and compares primary to secondary succession. Teachers: You can purchase this PowerPoint from my online store.

The link below will provide. Depending upon the nature of bare area on which it develops, the succession may be of two kinds primary and secondary : 1. The process of primary succession can take hundreds, if not thousands, of years. In contrast, the process of secondary succession can reestablish an ecosystem’s climax communities in as few as years. The ecosystem’s animal populations are also established more quickly during secondary succession. The scope of this paper will attempt to address how biotic and a biotic components effect the balance of the ecosystem, and how ecosystems go through.

The idea of a climax community. Succession as progressive change in an ecological community.