Survivorship 3.1–3.3

Generalist Species

Organisms with a broad niche that can use a variety of resources and live in many different environments.

Specialist Species

Organisms with a narrow niche that depend on specific resources or habitats.

K-Selected Species

Species that produce few offspring, have high parental care, and thrive in stable environments.

r-Selected Species

Species that produce many offspring, provide little to no parental care, and thrive in disturbed environments.

Survivorship Curve Type I

Type curve represents species with high parental investment, where most survive to adulthood and mortality increases at old age.

Survivorship Curve Type II

Type curve represents species with a constant mortality risk throughout life.

Survivorship Curve Type III

Type curve represents species with a very high death rate early in life, where few survive to adulthood.

Invasive Species

Non-native organisms that spread rapidly, causing harm to ecosystems, biodiversity, and economies.

Keystone Species

A species that has a disproportionately large impact on its environment relative to its abundance.

Examples of Generalist Species

Raccoons, cockroaches, rats, deer, and humans.

Examples of Specialist Species

Pandas, koalas, and spotted owls.

Impact of Invasive Species on K-Selected Species

They are heavily impacted by invasive species because they cannot adapt quickly.