biomonitor

https://doi.org/10.1351/goldbook.14491
  1. n. Organism that provides quantitative information on the quality of the environment around it.
    Note: The ideal substance biomonitor would indicate the presence of a specific pollutant and provide additional information about the amount present.
  2. v. To use organisms to monitor pollutants and to deduce possible effects on biota or routes of toxicant exposure to humans.
Source:
PAC, 2009, 81, 829. (Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)) on page 851 [Terms] [Paper]