Ecological Succession

1. Pioneer species

1.1. Lupins

1.1.1. Fix nitrogen

1.2. seeds brought in

1.3. tolerant

2. Follows a sequence

2.1. bare rock

2.2. algae mosses

2.3. grasses

2.4. small trees

2.5. big trees

2.6. Climax community

3. Glacier bay alaska

4. Primary

4.1. No soil

4.2. Lava flow

4.3. Retreating glacier

5. Secondary

5.1. soil remains

5.2. Forest fire