ECOLOGICAL SUCCESSION• Ecological Succession – the gradual change of species

composition in a given area

• Two main types of ecological succession

– Primary (beginning from bare rock) – long time• Example: Volcanic Eruption destroys vegetation ecosystem has to develop from

bare rock

– Secondary (beginning from soil) – short time• Example: Forest Fire destroys all vegetation ecosystem has to develop from

remain soil

ECOLOGICAL SUCCESSION

Pioneer Species – first organisms to show upPrimary Succession Examples

Mosses Lichens

Ecological Succession

Pioneer Species – first organisms to show upSecondary Succession Examples

Annual Weeds

Ecological Succession

Climax Species – last organisms to show upPrimary Succession Examples

Balsam FirPaper BirchWhite Spruce

Ecological Succession

Climax Species – last organisms to show upSecondary Succession Examples

OakHickory

Ecological Succession VideosSuccession Video – http://www.youtube.com/watch?v=V49IovRSJDs

TXPWD quail – http://www.youtube.com/watch?v=c2WsEGY2Ctk