COLONISATION OF WASTELAND: Example of a Prisere
1: Mosses and Lichens: Pioneer species establish on bare surfaces containing little water. They obtain nutrients from a combination of photosynthesis and nutrients resulting from the acid weathering of the surface material (e.g concrete). Decomposition of dead matter leaves a thin, unconsolidated layer of organic matter
2: Oxford ragwort, budlea, dandelion: These establish in sheltered cracks where dust can accumulate and seeds are trapped. This material allows them to root.
3: Michaelmas daisy, lupin, tansy: Lupins add much needed nitrogen to the soil. These plants…