This fully-resourced lesson describes the stages of succession from colonisation to climax community. The PowerPoint and accompanying worksheets have been designed to cover the content of point 5.4 of the Edexcel A-level Biology A specification.
As you can see from the cover image, this lesson uses a step-by-step method to guide the students through each stage of the process of succession, explaining each of the gradual, progressive changes that occur in a community over time. At each stage, time is taken to consider the organisms involved. There is a focus on lichens as examples of pioneer species and students will understand how colonisation by these organisms is critical to provide organic matter and to turn the bare ground into soil so it is habitable by other species. The island of Surtsey in Iceland is used as real-world example and shows how different parts of an area can be at different stages of succession.
Understanding and prior knowledge checks are embedded into the PowerPoint (along with the answers) to allow students to assess their progress against the current topic and to encourage them to make links to previously-covered work.
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