Food webs and interdependence

The resources in this list look at the interdependence of organisms in an ecosystem, including food webs and insect pollinated crops. The list provides a range of activities, lesson ideas, film clips, careers resources, background information, practical tips and suggested teaching strategies.

At Key Stage Three, students will not need to be familiar with the term 'trophic level', but the idea that a food chain represents energy flow from one organism to another should be introduced, helping students to understand the direction of the arrows in food webs. Once students are familiar with constructing food webs from food chains, they can begin to investigate how feeding relationships within a habitat are interconnected and make predictions about the effects of different environmental factors on plant and animal populations.

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Whilst this list provides a source of information and ideas for experimental work, it is important to note that recommendations can date very quickly. Do NOT follow suggestions which conflict with current advice from CLEAPSS, SSERC or recent safety guides. eLibrary users are responsible for ensuring that any activity, including practical work, which they carry out is consistent with current regulations related to Health and Safety and that they carry an appropriate risk assessment. Further information is provided in our Health and Safety guidance.