primary succession

https://doi.org/10.1351/goldbook.14951
Sequential colonization by species which begin to colonize the bare ground and modify the environmental conditions after a region is completely denuded; e.g., behind a retreating glacier, early colonizing organisms provide the soils needed by succeeding organisms.
Source:
PAC, 2009, 81, 829. (Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)) on page 932 [Terms] [Paper]