Ecosystems (OCR GCSE Geography A (Geographical Themes)): Flashcards
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What is an ecosystem?
What is an ecosystem?
All living and non-living parts in an area
Food chain
Food chain
Shows what eats what
Food web
Food web
Shows lots of food chains and how they overlap
Nutrient cycle
Nutrient cycle
Transfer of nutrients from soil to plants to consumers & back
Tertiary consumers
Tertiary consumers
Top predators with no predators of their own
Secondary consumers
Secondary consumers
Small carnivores that prey on primary consumers
Primary consumers
Primary consumers
Herbivores that eat producers
Producers
Producers
Plants that form the foundation of food webs
What do decomposers do?
What do decomposers do?
Break down dead matter, return nutrients to soil
Impact of ecosystem changes
Impact of ecosystem changes
Change to one part impacts other parts
Why do consumers depend on producers?
Why do consumers depend on producers?
For food source and habitat
Effect of oak tree reduction
Effect of oak tree reduction
Decreases beetles & caterpillars that rely on them for food
Species interconnectedness
Species interconnectedness
Changes in one species affect others that depend on it