ENVB 305 Lecture Notes - Lecture 14: Pioneer Species, Climax Community, Secondary Succession
Document Summary
Defined as the change in communities over time. Occurs on many different levels over different periods of time. In plant communities, young fields->old fields->young forests->old forests. Colonization-competition trade-off- a species can be a good colonizer or a good competitor, but not both (though successful invasive species can do both) Primary succession- colonization of new substrates (ex: after a forest fire) Secondary succession- when a previously established community is removed by disturbance (ex: a fallen tree, intertidal zones) Facilitation- one species paves the way for others, there is an endpoint to the succession, called the climax community.