ecological mortality

synonym: ecological death
https://doi.org/10.1351/goldbook.14615
Toxicant-related diminution of fitness of an individual functioning within an ecosystem that is of a magnitude sufficient to be equivalent to somatic death.
Note: This concept implies that an individual organism may be so incapacitated by an environmental change that, though still alive, its contribution to the ecosystem becomes negligible.
Source:
PAC, 2009, 81, 829. (Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)) on page 872 [Terms] [Paper]