@article{fdi:010087511,
  title = {{F}orest and tree species distribution on the ultramafic substrates of {N}ew {C}aledonia},
  author = {{B}irnbaum, {P}. and {I}banez, {T}homas and {B}lanchard, {G}r{\'e}goire and {J}usteau-{A}llaire, {D}. and {H}equet, {V}anessa and {E}ltabet, {N}. and {V}ieilledent, {G}. and {B}arbier, {N}icolas and {B}arri{\`e}re, {R}. and {B}ruy, {D}avid},
  editor = {},
  language = {{ENG}},
  abstract = {{A}bout a third of {N}ew {C}aledonia is covered with ultramafic soils ({UM}) which hosts a rich flora (endemism > 85%) threatened by mining activities. {T}his combination makes the ultramafic vegetation a floristic hotspot within a biodiversity hotspot. {UM} soils are distributed from sea level to 1618 m elevation with about two-thirds forming a large continuous unit while the remaining forms numerous relatively small isolated units. {H}ere, we provide a synthesis of the distribution of forest and tree species across 22 {UM} units. {W}e compiled an extensive tree occurrence dataset (109,896 occurrences and 1,065 species) and a new expert-based forest map at a 1:3000 spatial resolution. {O}nly 10% of these species represented more than 50% of the occurrences, while 10% of the species had only one or two occurrences. {A} quarter of the {UM} area did not contain any occurrences, and we estimated that on average a quarter of the species remained to be inventoried in the 22 units. {F}orest covers about one-third of the {UM} areas with forest coverage ranging from 1.7% to 72.3% in the different {UM} units. {F}orest coverage increased from 14.6% on sea level to 93.3% at 1,200 m of elevation. {A}bout 30% of the forest and 90% of the species were located within mining concessions, while 14.5% and 73%, respectively, were located within protected areas. {W}e recommend setting up new protected areas on ultramafic substrate, specially in the {N}orthern province, to protect more forest and the diversity it harbours.},
  keywords = {{U}ltramafic soils ; forest cover ; fragmentation ; species richness ; biodiversity hotspot ; {NOUVELLE} {CALEDONIE}},
  booktitle = {},
  journal = {{B}otany {L}etters},
  volume = {[{E}arly access]},
  numero = {},
  pages = {[13 p.]},
  ISSN = {2381-8107},
  year = {2023},
  DOI = {10.1080/23818107.2023.2181216},
  URL = {https://www.documentation.ird.fr/hor/fdi:010087511},
}