Food web shuffle
In this activity you will get to experience first-hand which insulation material used by Arctic wildlife is the warmest.
Background
A food web consists of all the interconnected food chains within a single ecosystem. Each organism in an ecosystem is part of multiple food chains, representing various paths that energy and nutrients can follow as they move through the ecosystem. These chains can range from simple and short to complex and lengthy. Together, all these overlapping food chains form a food web.
Food chains begin with primary producers, organisms that create their own food through photosynthesis by using sunlight and carbon dioxide (CO2). The next level, known as primary consumers, consists of herbivores that eat the primary producers. Secondary consumers, which are carnivores or omnivores, feed on the primary consumers. Finally, tertiary consumers, or top predators, consume both primary and secondary consumers, maintaining balance within the food web.
Procedure
- Each group will get a set of organisms (
Handout 2) and the background (
Handout 3 and
Handout 4).
- Arrange the organisms. To do this, tape the cut-outs of each organism in the appropriate place and draw arrows to illustrate the food web as you understand it (see example below). A short description of the food preferences of each organism can be found in
Handout 1 and in the GUARDNA cards. Discuss with your colleagues in the group and do additional research if needed.
- One person of your group presents your group’s food web to the rest of the class.
- Compare the groups’ food webs, and listen to the teacher’s solution with an explanation.
Follow-up discussion
- In this activity, you pictured a simplified version of the Arctic food web, which other animals or life stages would you add to the food chain?
- What would happen to the other animals in the marine food web if a large fish, for example cod, was overfished?
Extension
Explore the impact of human activities on marine food webs. Use and discuss the GUARDNA “Threat” cards to understand how pollution, overfishing, climate change, and other human activities affect the intricate balance of marine food webs.
Learn about ecosystem-based management. Traditionally, scientists and managers focused on individual species when studying and managing marine mammals. However, as you have learned, ecosystems are complex and interconnected. Focusing solely on a single species without considering its relationships with other species and its role within the broader ecosystem can lead to poor management decisions. Today, management has shifted towards ecosystem-based management: an integrated approach that considers the entire ecosystem, including human impacts, in resource management decisions. This approach is guided by adaptive management principles, which allow for adjustments based on ongoing observations and feedback.
Learning outcomes
Materials
Related GUARDNA cards
Marine mammals
Stakeholders
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