Community Ecology. Remember!. A community includes all organisms that live together in an area. Community Ecology : study of interactions among all populations in a common environment. Ecologists ask - in what ways do the populations interact?. Community Interactions.
Ecologists ask - in what ways do the populations interact?
Bobcat’s Niche: predator, carnivore
Rabbit’s Niche: prey, herbivore
The red squirrel is native to Britain, but its population has declined due to competition with the grey squirrel.
The grey squirrel was introduced into Britain & has easily adapted, replacing the red squirrel.
Several species of Anolis Lizards live close in proximity & all feed on insects & other small arthropods.
Competition for food is reduced, because each lizard species occupies a different microhabitat.
Clownfish live within sea anemones, which normally sting other fish.
The fish gets protection, & the anemone benefits because the clownfish keep it clean of bacteria.
Hummingbirds pollinate flowers. The hummingbirds get food, while helping the flowers reproduce!
Here, a leech sucks the blood of a human.
A wasp lays its eggs in the larva of another insect (a boll weevil).
When the wasp eggs hatch, they feed on the boll weevil.
Epiphytes are plants that grow on other plants without harming them. They never set roots in the ground.
Moss growing on a tree
When grazing cows walk around, they disturb the ground, which stirs up insects. Birds follow the cows & eat these insects. The relationship between the bird & the cow is-
Notice the pattern of population size with predator/prey relationship of hares & lynxes.
Is Mycorrhizae an example of mutualism, parasitism, or commensalism? Explain your answer!