Types of Interactions
Predator eats prey
Population cycles: sinusoidal growth
Organism feeds on photosynthetic organisms
Types of Symbiotic Relationships
both benefitting (lichen- algae and fungi)
one benefits, other is neither benefitted nor harmed
parasite benefits host is harmed
Mechanism: Interference - competition between members of different species, to obtain resources
Mechanism: Exploitative - better ability to get resources, not enough left for others
using different resources in a habitat.
niche: organisms role, abiotic and biotic
natural disturbances, climate change, pollution
disease, predation, competition (food, space, mate)
population density too low: undercrowding. Contradicts logistic growth model
mimics environment. coloration
mimics another organism. coloration.
releases noxious odours or concentrates poisons
passive: hiding, playing dead & active fleeing, herding
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