Key Idea.
Section 1
Modeling the Ecosystem
To understand the decline of the Orange-Bellied Parrot, scientists construct a food web model. This model shows the network of feeding relationships and energy flow on the island.
It categorizes organisms by their roles (producers, consumers) and identifies key interactions between populations.
Section 2
The Invasive Threat
The ecosystem includes both native species and invasive species (like feral cats) introduced by humans.
Changes to one population can directly or indirectly affect others. Students analyze how these new invasive populations fit into the web and disrupt the native parrot's stability.
Expand to review the lesson summary and core properties.
Section 1
Modeling the Ecosystem
To understand the decline of the Orange-Bellied Parrot, scientists construct a food web model. This model shows the network of feeding relationships and energy flow on the island.
It categorizes organisms by their roles (producers, consumers) and identifies key interactions between populations.
Section 2
The Invasive Threat
The ecosystem includes both native species and invasive species (like feral cats) introduced by humans.
Changes to one population can directly or indirectly affect others. Students analyze how these new invasive populations fit into the web and disrupt the native parrot's stability.