Abiotic and Biotic Changes in Australian Ecosystems (HSC SSCE Biology): Flashcards
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Abiotic factors
Abiotic factors
Non-living features: temperature, rainfall, soil type
Biotic factors
Biotic factors
Living components: plants, animals, microorganisms
Gondwana
Gondwana
Ancient supercontinent including Australia
Megafauna
Megafauna
Large animals, typically over kg
Diprotodon opatum
Diprotodon opatum
Largest marsupial ever; giant wombat-like
Thylacoleo carnifex
Thylacoleo carnifex
Marsupial lion; Australia's largest mammalian carnivore
Megafauna extinction period
Megafauna extinction period
Between 50,000-40,000 years ago
Climate 55 million years ago
Climate 55 million years ago
Wet and warm; rainforest dominance
Indigenous fire use purpose (60,000 ya)
Indigenous fire use purpose (60,000 ya)
Clear areas, promote plants, facilitate hunting
Eucalyptus emergence time
Eucalyptus emergence time
8 million years ago