6a. Interspecific Competition

mutualism is when interactions

benefit both populations

commensalism is when interactions

benefit one population and the other is neither benefited or harmed

an example of commensalism occurs between

trees and epiphytes

predation =

killing and consuming of prey

predation and parasitism

positively affect one population and are detrimental to the other

parasitism is when an organism lives

in or on another host from which it obtains food

adverse effects on both population =

interspecific competition

interspecific competition develops when a resource needed by both populations is in

limited supply

intraspecific competition occurs between

members of the same species

individuals can experience intraspecific but can also experience

interspecific competition with other species

Lotka-Volterra model describes a situation in which there is _ competition between two species for a _

non predatory, limited resource

alpha is the conversion factor expressing _

species 2 in terms of species 1

inside the zero isocline, species will _ until they reach the line

increase

three outcomes are possible, both species _, or either _

coexist, species goes extinct

in a situation where neither species has a very strong effect on the other, we might expect them to

coexist