Types of Community Interactions

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Presentation transcript:

Types of Community Interactions Competition Predation Symbiosis

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. Competition

Predation—interaction in which one organism captures 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 Cleaning shrimp

= 1 species 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 You can see here that this polar bear is no longer white.

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 The Egyptian plover takes insects from the backs of buffaloes, giraffes and rhinos. The plover has also been observed taking leeches from the open mouths of crocodiles! In this association the plover receives a supply of food and the other animal rids itself of unwelcome pests

Egyptian Plover & Crocodile Mutualism Egyptian Plover & Crocodile

Symbiotic Relationships Mutualism- beneficial to both species Lichen Fungus + Bluegreen Algae The Egyptian plover takes insects from the backs of buffaloes, giraffes and rhinos. The plover has also been observed taking leeches from the open mouths of crocodiles! In this association the plover receives a supply of food and the other animal rids itself of unwelcome pests