Succession and Extinction

a gradual pattern of change that occurs in an ecosystem after a disturbance

predictable

primary and secondary succession

occurs in surfaces where there is no soil left after the disturbance

volcanic eruption glacial movement or melting

occurs on surfaces where soil remains

wildfires clear-cutting climate change introduced species

first species to populate an area after a disturbance

a stable community that experiences little succession

whales die and fall to ocean floor scavengers feed on carcass new community feeds on remaining tissue decomposition enriches the soil bacteria feed on oil in bones

maintains a healthy ecosystem

encourages health of species

provides raw materials

habitat loss poaching introduced species pollution

loss of one species could affect many others species rely on each other for survival

reduced options for mates leads to interbreeding species become more susceptible to disease

species that completely disappeared

species at risk of becoming extinct

species at risk of becoming endangered

the planned management of natural resources to ensure sustainable use

National parks

Lacey Act

Endangered Species Act

CITES