Types of Community
Interactions
Competition
Predation
Symbiosis
Competition Competition—interaction in which
organisms of the same or different species attempt to use the same ecological resource in the same place at the same time.
Predation Predation—interaction in which
one organism captures, KILLS, and feeds on another organism.
Symbiotic Relationships
Symbiosis- two species living together http://www.youtube.com/watch?v=zSmL2F1t81Q
3 Types of symbiosis:
1. Commensalism
2. Parasitism
3. Mutualism
Type of relationship
Species harmed
Species benefits
Species neutral
Commensalism
Parasitism
Mutualism
= 1 species
Symbiotic Relationships
Commensalism-
one species benefits and the other is neither harmed nor helped
Ex. orchids on a tree
Epiphytes: A plant, such as a tropical orchid or a bromeliad, that grows on another plant upon which it depends for mechanical support but not for nutrients. Also called xerophyte, air plant.
Symbiotic Relationships
Commensalism-
one species benefits and the other is neither harmed nor helped
Ex. polar bears and cyanobacteria
Commensalism
Whale & Barnacles
Shark & Remora
Symbiotic Relationships
Parasitism-
one species benefits (parasite) and the other is harmed (host)
• Parasite-Host relationship
Symbiotic Relationships
Parasitism- parasite-host
Ex. lampreys,
leeches, fleas,
ticks, tapeworm,
Not considered predator-prey because goal is not to KILL host
Symbiotic Relationships
Mutualism- beneficial to both species Cleaner Shrimp & Fish
Bee & Flower
Mutualism
Egyptian
Plover
&
Crocodile
Symbiotic Relationships
Mutualism- beneficial to both species Lichen Fungus + Bluegreen Algae
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