olemus
ISO 22300:
kõikjalt pärit elusorganismide mitmekesisus,
sealhulgas nende, mis on pärit maa, mere ja muude veekogude ökosüsteemidest ja ökoloogilistest kompleksidest, mille osa on need organismid;
hõlmab liigisisest, liikidevahelist ja ökosüsteemide mitmekesisust. Elurikkus on mitte ainult kõigi ökosüsteemide, liikide ja kogu geneetilise materjali summa, vaid pigem väljendab mitmekesisust
nende sees ja vahel.
=
variability among living organisms from all sources including land, marine and other aquatic ecosystems and the ecological complexes of which the organisms are part
Note 1. This includes diversity within species, between species and of ecosystems. Biodiversity is thus not only the sum of all ecosystems, species and genetic material, but rather represents the variability within and among them.

ülevaateid
https://en.wikipedia.org/wiki/Biodiversity

https://www.ndvsu.org/images/StudyMaterials/VPH/topic-2-biodiversity.pdf

https://www.unesco.pl/fileadmin/user_upload/pdf/BIODIVERSITY_FACTSHEET.pdf

https://ncert.nic.in/textbook/pdf/lebo115.pdf

https://www.oecd.org/env/resources/OECD-work-on-biodiversity-and-ecosystems.pdf

https://www.cbd.int/doc/publications/gbo/gbo3-final-en.pdf