4.2 Keystone species-Alligators

Front

What is a keystone species?

Back

A keystone species is a species that has a disproportionately large effect on its environment relative to its abundance. Its presence or absence can significantly impact the ecosystem.

Front

Why were large numbers of alligators killed in the 1930s?

Back

Alligators were killed for various reasons including their skins for boots and belts, and their meat, leading to a significant decline in their population.

Front

What is the role of alligators in their ecosystem?

Back

Alligators help maintain the balance of their ecosystem by controlling the populations of prey species and creating habitats for other organisms.

Front

What would happen if a keystone species is lost?

Back

The loss of a keystone species can lead to population crashes and extinctions of other species in the community, disrupting the entire ecosystem.

Front

What is the alligator gar?

Back

The alligator gar is a large fish found in the rivers of the South, known for its long body and sharp teeth.

Front

What organism was released into the Florida Everglades that threatens young alligators?

Back

The Burmese python was released into the Florida Everglades and poses a threat to young alligators.

Front

What is the significance of the term 'keystone' in ecology?

Back

The term 'keystone' in ecology refers to a species that plays a critical role in maintaining the structure of an ecological community.

Front

What are some threats to alligator populations today?

Back

Threats to alligator populations include habitat loss, hunting, and competition with invasive species like the Burmese python.

Front

How do alligators contribute to wetland ecosystems?

Back

Alligators create and maintain wetland habitats by digging holes that can hold water, providing a habitat for other species.

Front

What is the impact of invasive species on keystone species?

Back

Invasive species can outcompete, prey on, or otherwise negatively affect keystone species, leading to ecological imbalances.