Food Chains, Trophic Levels and Food Webs (AQA A-Level Geography): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
ShowHide
Practise the cards
10 cards from this deck
Ultimate source of energy for all ecosystems
Ultimate source of energy for all ecosystems
The Sun
Linear pathway showing energy movement through feeding
Linear pathway showing energy movement through feeding
Food chain
Organisms that make their own food via photosynthesis
Organisms that make their own food via photosynthesis
Producers
Herbivores that eat producers
Herbivores that eat producers
Primary consumers
Position an organism occupies in a food chain
Position an organism occupies in a food chain
Trophic level
Total mass of living material at each trophic level
Total mass of living material at each trophic level
Pyramid of biomass
Formula relating NPP, GPP and respiration
Formula relating NPP, GPP and respiration
NPP = GPP - Respiration
Biomass available to consumers after plant respiration
Biomass available to consumers after plant respiration
Net primary productivity (NPP)
Network of interconnected food chains in an ecosystem
Network of interconnected food chains in an ecosystem
Food web
Why biomass decreases at higher trophic levels
Why biomass decreases at higher trophic levels
Energy lost via respiration, movement & waste