Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Succession in Ecosystems Mrs. Karim Successiona gradual changes in a community over a period of time. new populations of organisms gradually replace existing ones There are three different stages to succession: 1. Primary succession 2. Secondary succession 3. Climax Community Primary successionLife start forming in rocks, no Soil. Examples: – Lichens grow bare rock Primary successionNew bare rock comes from 2 sources: 1. volcanic lava flow cools and forms rock Primary successionAnd the other source of rocks 2. Glaciers retreat and expose rock Pioneer Speciesthe first organisms to colonize or grow in anew site Ex: lichens are the first to Colonize lava rocks Secondary successionsequence of community changes that takes place when a community is disrupted by natural disaster or human actions – takes place on existing soil Secondary successionEx: A fire levels portions of a forest Soil will be left behind to start secondary succession Secondary successionEx: A farmer plows his field Climax communitya stable, mature community that undergoes little or no succession Climax communityEx: In most of Virginia, the climax community would be a deciduous oak–hickory forest Vocabularies Biotic : living things. Give example Abiotic: non living things. Give examples Producers: plants …. Why? Consumers: human, animals,bacteria,… why? Stages of succesion Rock Label the stages of succession Secondary succession- Secondary succession- Explain the stages of ecological succession Succession video https://www.youtube.com/watch?v=E0qdW oLdk1c