Ecosystems where species are endangered called?

There isn't a specific term for ecosystems where species are endangered. However, you can use some terms to describe them, depending on the context:

* Threatened ecosystems: This is a general term for ecosystems that are at risk of being degraded or destroyed. Endangered species are often indicators of ecosystem health, so threatened ecosystems are likely to have endangered species.

* Critical habitats: This term refers to areas that are essential for the survival of endangered species.

* Biodiversity hotspots: These are areas with high concentrations of endemic species (species found nowhere else) that are under threat. While not all biodiversity hotspots necessarily have endangered species, many do.

* Endangered ecosystems: While not a widely accepted term, it's a way to describe ecosystems where the overall health and resilience of the ecosystem are threatened, often due to the presence of endangered species.

It's important to understand that endangered species are often a symptom of a larger problem within the ecosystem. Factors that lead to ecosystem degradation, like habitat loss, pollution, climate change, and invasive species, can all contribute to species endangerment.