maturity index

https://doi.org/10.1351/goldbook.14830
Index for pollution based on the proportions of species in a soil nematode community that fall into various categories ranging from colonizers (\(r\mbox{-}\rm{strategists}\)) to persisters (\(k\mbox{-}\rm{strategists}\)).
Source:
PAC, 2009, 81, 829. (Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)) on page 910 [Terms] [Paper]