@article{fdi:010059520, title = {{N}ew {C}aledonia : a very old {D}arwinian island ?}, author = {{G}randcolas, {P}. and {M}urienne, {J}. and {R}obillard, {T}. and {D}esutter-{G}randcolas, {L}. and {J}ourdan, {H}erv{\'e} and {G}uilbert, {E}. and {D}eharveng, {L}.}, editor = {}, language = {{ENG}}, abstract = {{N}ew {C}aledonia has generally been considered a continental island, the biota of which largely dates back to {G}ondwanan times owing to its geological origin and the presence of phylogenetic relicts. {T}his view is contradicted by geological evidence indicating long {P}alaeocene and {E}ocene submersions and by recent biogeographic and phylogenetic studies, with molecular or geophysical dating placing the biota no older than the {O}ligocene. {P}hylogenetic relicts do not provide conclusive information in this respect, as their presence cannot be explained by simple hypotheses but requires assumption of many ad hoc extinction events. {T}he implication of this new scenario is that all the {N}ew {C}aledonian biota colonized the island since 37 {M}a {L}ocal richness can be explained by local radiation and adaptation after colonization but also by many dispersal events, often repeated within the same groups of organisms. {L}ocal microendemism is another remarkable feature of the biota. {I}t seems to be related to recent speciation mediated by climate, orography, soil type and perhaps unbalanced biotic interactions created by colonization disharmonies. {N}ew {C}aledonia must be considered as a very old {D}arwinian island, a concept that offers many more fascinating opportunities of study.}, keywords = {{N}ew caledonia ; {B}iogeography ; {P}hylogenetics ; {E}ndemism ; {D}ispersal ; {A}daptation ; {E}neopterinae crickets orthoptera ; {S}outhwest pacific ; {N}ew-zealand ; {R}ain-forest ; {P}hylogenetic-relationships ; {W}asmannia-auropunctata ; {S}ubgenus brassospora ; {M}olecular phylogeny ; {T}ectonic evolution ; {A}daptive radiation}, booktitle = {}, journal = {{P}hilosophical {T}ransactions of the {R}oyal {S}ociety of {L}ondon - {S}eries {B} : {B}iological {S}ciences}, volume = {363}, numero = {1508}, pages = {3309--3317}, ISSN = {0962-8436}, year = {2008}, DOI = {10.1098/rstb.2008.0122}, URL = {https://www.documentation.ird.fr/hor/fdi:010059520}, }