Ecology Species Interaction Quiz

The group of species that occupy a given area, interacting either directly or indirect

expressed as the proportion each species contributes to the total number of individuals of all species within the community.

the most abundant species is plotted first along the x-axis, with the corresponding value on the y-axis being its value of relative abundance.

The rank-abundance diagram illustrates two features of community structure

count of the number of species occurring within the community, and is typically denoted by the symbol S.

refers to the equitability in the distribution of individuals among the species

which consider both the number and relative abundance of species within the community

measures the probability that two individuals randomly selected from a sample will belong to the same species

When a single or few species predominate within a community, those species are referred to

A species that has a disproportionate impact on the community relative to its abundance

a descriptive diagram—a series of arrows, each pointing from one species to another, representing the flow of food energy from prey (the consumed) to predator (the consumer

highly interwoven, with linkages representing the complex interactions of predator and prey

and the arrows from the consumed to the consumers

feed on no other species but are fed on by other

feed on other species and they are prey of other species.

are not subject to predators; they prey on intermediate and basal species.

a measure of the average number of links per species in the food web.