Naturally regenerated forest of native species, where there are no clearly visible indications of human activities and the ecological processes are not significantly disturbed.

FAO. 2018. “Terms and Definitions - FRA 2020.” Forest Resources Assessment (FRA) Working Paper 188. Rome, Italy: Food and Agriculture Organization of the United Nations.

Source category: International Organisation

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Areas of usually old forest with natura forest structure and dynamics, lacking anthropogenic influences from the past to the present.

Leibundgut, H. (1982). Europäische Urwälder der Bergstufe. Verlag Paul Haupt, Bern, Stuttgart

Source category: Scientific & Technical Literature