Chapter 20

Front

What are recent examples of human-caused extinctions?

Back

Chinese river dolphins and Formosan clouded leopard.

Front

What does an organism's biotic environment include?

Back

Other individuals from its own population and populations of other species in the same area.

Front

What is a community in ecological terms?

Back

An assemblage of species living close enough to each other for potential interaction.

Front

What are interspecific interactions?

Back

Interactions between species.

Front

What are the classifications of interspecific interactions based on?

Back

Effects on populations concerned.

Front

What is a -/- interaction?

Back

Generally negative for both species because neither species has access to the full range of habitat’s resources.

Front

What is a +/+ interaction?

Back

Mutually beneficial interaction, such as between plants and pollinators.

Front

What is a +/- interaction?

Back

One population benefits at the expense (harm) of the other, such as predation.

Front

What is interspecific competition?

Back

A between-species competition, e.g., two species with the same niche competing for resources.

Front

What can limit the population growth of species?

Back

Population densities, competition from other species (interspecific competition), and competition with its own species (intraspecific competition).