What is the amount of energy available to consumers in an ecosystem called?

The amount of energy available to consumers in an ecosystem is called "net primary productivity" (NPP). NPP represents the energy that remains after primary producers, such as plants, have used some of the energy from sunlight for their own respiration and growth. This energy is then available to support the consumers, including herbivores and carnivores, within the ecosystem. It is a crucial measure for understanding energy flow and ecosystem health.