Community Ecology Flashcards
In predatory relationships (predation) …
1 population kills another
Predator avoidance is a
strong selective pressure
What do Mechanical defenses do?
Discourage predation by discouraging physical contact (thorns on roses)
What is mimicry?
A harmless species copies the colors of a harmful one
What is the competitive exclusion principle?
two species can’t coexist if they occupy exactly the same community (competing for identical resources)
How do different species reduce their overlap?
Develop traits that lessen reliance on shared resource
Symbiosis
Close, long-term relationships between individuals of different species. Different kinds of symbiosis include commensalism, mutualism, and parasitism.
Commensalism
One species benefits while the other is neither harmed nor benefits
Mutualism
Both species benefit
Parasitism
One species benefits, the other is harmed
