Jaffré Tanguy auteur aut IRD text journalArticle eng text/pdf born digital access New Caledonia is known for the diversity of its geological substrates, which have shaped its highly original and diverse flora. Here, the effect of the soil on the vegetation is described for several contact zones between ultramafic and other substrates. The main vegetation formations on soils derived from ultramafic rocks are described: low and medium altitude rainforests, high altitude rainforests, and maquis. The main types of maquis and the biological characteristics of maquis species are also presented specialized NOUVELLE CALEDONIE 076BOTA03 082VEGET02 076BOTA01 021ENVECO 170 3 338-349 2022 2381-8107 https://www.documentation.ird.fr/hor/fdi:010095167 10.1080/23818107.2022.2073260 2381-8107 [F B010095167] https://www.documentation.ird.fr/hor/fdi:010095167 https://www.documentation.ird.fr/intranet/publi/2025-10/010095167.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2025-10-28 2025-10-29 fdi:010095167 fre