%0 Conference Proceedings
%9 ACTI : Communications avec actes dans un congrès international
%A Jaffré, Tanguy
%A Veillon, Jean-Marie
%A Pintaud, J.C.
%T Floristic diversity of forests on ultramafic rocks of New Caledonia
%S Deuxième conférence internationale sur l'écologie des milieux serpentiniques, Nouméa, 31 juillet-5 août 1995 : résumés = Second international conference on serpentine ecology, Noumea, july 31-august 5, 1995 : abstracts
%C Nouméa
%D 1995
%L fdi:010005645
%G ENG
%I ORSTOM
%K FLORE ; FORET DENSE ; ROCHE ULTRABASIQUE ; ROCHE ACIDE ; ROCHE CARBONATEE ; ETUDE COMPARATIVE ; TAXONOMIE ; ENDEMIE ; STRUCTURE DU PEUPLEMENT
%K NOUVELLE CALEDONIE
%P 22
%U https://www.documentation.ird.fr/hor/fdi:010005645
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers10-09/010005645.pdf
%W Horizon (IRD)
%X The flora of dense humid forests on ultramafic rocks is compared with that over acidic and over calcareous rocks. The flora of forests on ultramafic rocks (1361 species belonging to 400 genera in 118 families) is as rich in species but a little less diversified in genera and families, than the flora over acidic rocks (1370 species distributed among 430 genera and 128 families). It is in contrast significantly more diversified than forest floras over calcareous rocks that cover a smaller area. Species associated with a specific forest type are more numerous on ultramafites than on acidic rocks and the genera are equal in number in both cases. Gymnosperms with 31 species of which 19 are strictly associated with ultramafic rocks, have their greatest importance with this type of substrate. The reverse is true for the Pteridophytes. The total number of Angiosperms is approximately the same for both ultramafic and acidic rocks, but is very variable according to families. Thus, 33 Angiosperms have a greater importance in the former rock type, 36 in the latter, and 33 are equally important in both. With exception of the Gymnosperms that are more numerous over ultramafic rocks, taxa representative of the antiquity of the New Caledonian flora have a similar importance in the two main types of forest. Nevertheless, the families #Phellinaceae$, #Balanopaceae$, #Sphenostemonaceae$, #Oncothecaceae$, and #Strasburgeriaceae$ are better represented in forest over ultramafic rocks. The #Monimiaceae$, #Amborellaceae$, and #Trimeniaceae$ are more important in forest over acidic rocks. The flora of forests over ultramafites is equally well distinguished from that over acidic rocks by a greater number of species in the #Euphorbiaceae$, #Myrtaceae$, #Santalaceae$, #Epacridaceae$, #Fagaceae$, and #Casuarinaceae$. (Résumé d'auteur)
%B Ecologie des Milieux Serpentiniques : Conférence Internationale = Serpentine Ecology : International Conference
%8 1995/07/31; 1995/08/05
%$ 082VEGET03