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Ecological Succession

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Presentation on theme: "Ecological Succession"— Presentation transcript:

1 Ecological Succession
© 2016 Paul Billiet ODWS Sand dune system

2 Primary Succession Begins with the removal of the vegetation and the soil earthobservatory.nasa.gov/Newsroom/NewImages/... © 2016 Paul Billiet ODWS

3 The pioneers August 1981 © 2016 Paul Billiet ODWS

4 The competitors © 2016 Paul Billiet ODWS

5 Towards a climax 2003 © 2016 Paul Billiet ODWS
© 2016 Paul Billiet ODWS

6 Species richness Mt St Helens
© 2016 Paul Billiet ODWS Roger del Moral Surtsey Research (2009) 12: 153–157

7 Vegetation cover Mt St Helens
Roger del Moral Surtsey Research (2009) 12: 153–157 © 2016 Paul Billiet ODWS

8 Plants in waterlogged soil
Sequence for a lake Example No vegetation Pioneers Competitors Climax Open water Floating plants Emergent plants Plants in waterlogged soil Shrubs Forest © 2016 Paul Billiet ODWS

9 Characteristics Each community prepares the way for the next. Stages cannot be skipped. Highest productivity in the early stages Highest biomass in the climax Highest diversity in climax or just before Most complex food webs in climax Minerals mostly held in the biomass of the climax community Soil stabilised (less erosion) in the climax. © 2016 Paul Billiet ODWS

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