Ecological succession, Food chains, food webs and ecological pyramids
Ecological succession (पारिस्थितिक अनुक्रमण):- A series of changes in an ecological system across time. It is the process of gradual replacement of one plant community by another plant community which is of stable type.
(समय-समय पर पारिस्थितिक तंत्र में परिवर्तनों की एक श्रृंखला। यह एक पादप समुदाय की दूसरे पादप समुदाय द्वारा क्रमिक प्रतिस्थापन की प्रक्रिया है जो स्थायी प्रकार का होता है।)
3 types of communities are developed in plant succession (पादप अनुक्रमण में 3 प्रकार के समुदाय विकसित होते हैं):-
i. Pioneer community (अग्रणी समुदाय):- It is the first plant community which develops in a bare area.
(यह पहला पादप समुदाय है जो बंजर क्षेत्र में विकसित होता है।)
ii. Seral communities (सीरल समुदाय):- These are the plant communities that develop during the succession.
(ये वे पादप समुदाय हैं जो अनुक्रमण के दौरान विकसित होते हैं।)
iii.Climax community (चरमोत्कर्ष समुदाय):- It is the last invading community.
(यह अंतिम आक्रमणकारी समुदाय होता है।)
Causes of Plant succession (पादप अनुक्रमण के कारण):-
i. Initial or initiating causes (प्रारंभिक या शुरुआती कारण):-
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