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Succession in Ecosystems. Succession- a series of changes in a community in which new populations of...
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Transcript of Succession in Ecosystems. Succession- a series of changes in a community in which new populations of...
![Page 1: Succession in Ecosystems. Succession- a series of changes in a community in which new populations of organisms gradually replace existing ones.](https://reader035.fdocuments.us/reader035/viewer/2022070401/56649f1b5503460f94c31410/html5/thumbnails/1.jpg)
Succession in Ecosystems
![Page 2: Succession in Ecosystems. Succession- a series of changes in a community in which new populations of organisms gradually replace existing ones.](https://reader035.fdocuments.us/reader035/viewer/2022070401/56649f1b5503460f94c31410/html5/thumbnails/2.jpg)
Succession-
a series of changes in a community in which new populations of organisms gradually replace existing ones
![Page 3: Succession in Ecosystems. Succession- a series of changes in a community in which new populations of organisms gradually replace existing ones.](https://reader035.fdocuments.us/reader035/viewer/2022070401/56649f1b5503460f94c31410/html5/thumbnails/3.jpg)
Primary succession-
Population of new sites by communities of organisms – takes place on bare rock
![Page 4: Succession in Ecosystems. Succession- a series of changes in a community in which new populations of organisms gradually replace existing ones.](https://reader035.fdocuments.us/reader035/viewer/2022070401/56649f1b5503460f94c31410/html5/thumbnails/4.jpg)
Primary succession-
New bare rock comes from 2 sources:
1. volcanic lava flow cools and forms rock
![Page 5: Succession in Ecosystems. Succession- a series of changes in a community in which new populations of organisms gradually replace existing ones.](https://reader035.fdocuments.us/reader035/viewer/2022070401/56649f1b5503460f94c31410/html5/thumbnails/5.jpg)
Primary succession-
New bare rock comes from 2 sources:
2. Glaciers melt and expose rock
![Page 6: Succession in Ecosystems. Succession- a series of changes in a community in which new populations of organisms gradually replace existing ones.](https://reader035.fdocuments.us/reader035/viewer/2022070401/56649f1b5503460f94c31410/html5/thumbnails/6.jpg)
Pioneer organisms-
the first organisms to populate a new site
Ex: lichens are the first to colonize lava rocks
![Page 7: Succession in Ecosystems. Succession- a series of changes in a community in which new populations of organisms gradually replace existing ones.](https://reader035.fdocuments.us/reader035/viewer/2022070401/56649f1b5503460f94c31410/html5/thumbnails/7.jpg)
Lichen
Fungi and algae act as one organism. The algae produces energy through photosynthesis. The fungi obtains water and minerals and protects the algae cells.
![Page 8: Succession in Ecosystems. Succession- a series of changes in a community in which new populations of organisms gradually replace existing ones.](https://reader035.fdocuments.us/reader035/viewer/2022070401/56649f1b5503460f94c31410/html5/thumbnails/8.jpg)
Primary Succession-
Rock
![Page 9: Succession in Ecosystems. Succession- a series of changes in a community in which new populations of organisms gradually replace existing ones.](https://reader035.fdocuments.us/reader035/viewer/2022070401/56649f1b5503460f94c31410/html5/thumbnails/9.jpg)
Climax community-
a stable, mature community that undergoes little or no succession
![Page 10: Succession in Ecosystems. Succession- a series of changes in a community in which new populations of organisms gradually replace existing ones.](https://reader035.fdocuments.us/reader035/viewer/2022070401/56649f1b5503460f94c31410/html5/thumbnails/10.jpg)
Climax community-
Ex: In most of Virginia, the climax community would be a deciduous oak–hickory forest
![Page 11: Succession in Ecosystems. Succession- a series of changes in a community in which new populations of organisms gradually replace existing ones.](https://reader035.fdocuments.us/reader035/viewer/2022070401/56649f1b5503460f94c31410/html5/thumbnails/11.jpg)
Primary succession-
![Page 12: Succession in Ecosystems. Succession- a series of changes in a community in which new populations of organisms gradually replace existing ones.](https://reader035.fdocuments.us/reader035/viewer/2022070401/56649f1b5503460f94c31410/html5/thumbnails/12.jpg)
Secondary succession-
sequence of community changes that takes place when a community is disrupted by natural disaster or human actions – takes place on existing soil
![Page 13: Succession in Ecosystems. Succession- a series of changes in a community in which new populations of organisms gradually replace existing ones.](https://reader035.fdocuments.us/reader035/viewer/2022070401/56649f1b5503460f94c31410/html5/thumbnails/13.jpg)
Secondary succession-
Ex: A fire levels portions of a forest
![Page 14: Succession in Ecosystems. Succession- a series of changes in a community in which new populations of organisms gradually replace existing ones.](https://reader035.fdocuments.us/reader035/viewer/2022070401/56649f1b5503460f94c31410/html5/thumbnails/14.jpg)
Secondary succession-
Ex: A farmer plows his field
![Page 15: Succession in Ecosystems. Succession- a series of changes in a community in which new populations of organisms gradually replace existing ones.](https://reader035.fdocuments.us/reader035/viewer/2022070401/56649f1b5503460f94c31410/html5/thumbnails/15.jpg)
Secondary succession-
![Page 16: Succession in Ecosystems. Succession- a series of changes in a community in which new populations of organisms gradually replace existing ones.](https://reader035.fdocuments.us/reader035/viewer/2022070401/56649f1b5503460f94c31410/html5/thumbnails/16.jpg)
Secondary succession-
![Page 17: Succession in Ecosystems. Succession- a series of changes in a community in which new populations of organisms gradually replace existing ones.](https://reader035.fdocuments.us/reader035/viewer/2022070401/56649f1b5503460f94c31410/html5/thumbnails/17.jpg)
Pond Succession
![Page 18: Succession in Ecosystems. Succession- a series of changes in a community in which new populations of organisms gradually replace existing ones.](https://reader035.fdocuments.us/reader035/viewer/2022070401/56649f1b5503460f94c31410/html5/thumbnails/18.jpg)
Pond Succession
![Page 19: Succession in Ecosystems. Succession- a series of changes in a community in which new populations of organisms gradually replace existing ones.](https://reader035.fdocuments.us/reader035/viewer/2022070401/56649f1b5503460f94c31410/html5/thumbnails/19.jpg)