naa a22 4500 510731198 CHVBK 20180411082953.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s11295-012-0575-7 doi (NATIONALLICENCE)springer-10.1007/s11295-012-0575-7 Structure and genetic diversity of Ixora margaretae an endangered species [Elektronische Daten] A baseline study for conservation and restoration of natural dry forest of New Caledonia [D. Verhaegen, A. Assoumane, J. Serret, S. Noe, B. Favreau, A. Vaillant, G. Gâteblé, A. Pain, C. Papineau, L. Maggia, J. Tassin, J.-M. Bouvet] The dry forests of New Caledonia are an exceptional ecosystem because of their numerous endemic botanical species and their highly diversified fauna of insects, mollusks, reptiles and birds. Unfortunately, the area of the dry forests has been significantly reduced, mainly by human activities. Ecological, phenological and genetic analysis of Ixora margaretae, a symbolic species of the sclerophyll forest, has revealed contrasting traits among natural stands. The division of the natural range and then the separation of forest islands has greatly reduced the existing genetic variability of this species. The genetic diversity is strongly structured in genetic clusters which correspond well to specific ecotypes according to the environmental conditions and the forest types. Furthermore, genetic analysis of the reproductive and non-reproductive trees as well the half-sib families obtained by complete protection of mother trees has revealed substantial genetic drift which has resulted in increased loss of allelic variability. The total consumption of seeds by mainly rats confirms the observed absence of natural regeneration. All these results show that measures taken to protect the stands of dry forests will not be enough to maintain sufficient genetic variability of I. margaretae populations in the long term. Assisted regeneration with control of the increase in variability will be necessary to maintain the biodiversity of the species. The results obtained for I. margaretae must be confirmed with other symbolic species in order to take the necessary measures for the effective preservation of the dry forests in New Caledonia. Springer-Verlag Berlin Heidelberg, 2012 Biodiversity hotspot nationallicence Sclerophyll forests nationallicence Endemism nationallicence Ecology nationallicence SSR nationallicence Gene flow nationallicence Genetic drift nationallicence Verhaegen D. Cirad UMR AGAP «Genetic diversity and breeding of forest trees», TA A-108/C, Baillarguet, 34398, Montpellier Cedex 5, France aut Assoumane A. Cirad UMR AGAP «Genetic diversity and breeding of forest trees», TA A-108/C, Baillarguet, 34398, Montpellier Cedex 5, France aut Serret J. Cirad UMR AGAP «Genetic diversity and breeding of forest trees», TA A-108/C, Baillarguet, 34398, Montpellier Cedex 5, France aut Noe S. Cirad UMR AGAP «Genetic diversity and breeding of forest trees», TA A-108/C, Baillarguet, 34398, Montpellier Cedex 5, France aut Favreau B. Cirad UMR AGAP «Genetic diversity and breeding of forest trees», TA A-108/C, Baillarguet, 34398, Montpellier Cedex 5, France aut Vaillant A. Cirad UMR AGAP «Genetic diversity and breeding of forest trees», TA A-108/C, Baillarguet, 34398, Montpellier Cedex 5, France aut Gâteblé G. IAC Institut Agronomique néo-Calédonien BP73, 98890, Païta, New Caledonia aut Pain A. IAC Institut Agronomique néo-Calédonien BP73, 98890, Païta, New Caledonia aut Papineau C. Programme de Conservation des Forêts Sèches (PCFS), Centre de Recherche Nord BP6, 98825, Pouembout, New Caledonia aut Maggia L. Cirad UMR AGAP «Genetic diversity and breeding of forest trees», TA A-108/C, Baillarguet, 34398, Montpellier Cedex 5, France aut Tassin J. IAC Institut Agronomique néo-Calédonien BP73, 98890, Païta, New Caledonia aut Bouvet J.-M Cirad UMR AGAP «Genetic diversity and breeding of forest trees», TA A-108/C, Baillarguet, 34398, Montpellier Cedex 5, France aut Tree Genetics & Genomes Springer-Verlag 9/2(2013-04-01), 511-524 1614-2942 9:2<511 2013 9 11295 https://doi.org/10.1007/s11295-012-0575-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11295-012-0575-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Verhaegen D. Cirad UMR AGAP «Genetic diversity and breeding of forest trees», TA A-108/C, Baillarguet, 34398, Montpellier Cedex 5, France aut NATIONALLICENCE 700 1- Assoumane A. Cirad UMR AGAP «Genetic diversity and breeding of forest trees», TA A-108/C, Baillarguet, 34398, Montpellier Cedex 5, France aut NATIONALLICENCE 700 1- Serret J. Cirad UMR AGAP «Genetic diversity and breeding of forest trees», TA A-108/C, Baillarguet, 34398, Montpellier Cedex 5, France aut NATIONALLICENCE 700 1- Noe S. Cirad UMR AGAP «Genetic diversity and breeding of forest trees», TA A-108/C, Baillarguet, 34398, Montpellier Cedex 5, France aut NATIONALLICENCE 700 1- Favreau B. Cirad UMR AGAP «Genetic diversity and breeding of forest trees», TA A-108/C, Baillarguet, 34398, Montpellier Cedex 5, France aut NATIONALLICENCE 700 1- Vaillant A. Cirad UMR AGAP «Genetic diversity and breeding of forest trees», TA A-108/C, Baillarguet, 34398, Montpellier Cedex 5, France aut NATIONALLICENCE 700 1- Gâteblé G. IAC Institut Agronomique néo-Calédonien BP73, 98890, Païta, New Caledonia aut NATIONALLICENCE 700 1- Pain A. IAC Institut Agronomique néo-Calédonien BP73, 98890, Païta, New Caledonia aut NATIONALLICENCE 700 1- Papineau C. Programme de Conservation des Forêts Sèches (PCFS), Centre de Recherche Nord BP6, 98825, Pouembout, New Caledonia aut NATIONALLICENCE 700 1- Maggia L. Cirad UMR AGAP «Genetic diversity and breeding of forest trees», TA A-108/C, Baillarguet, 34398, Montpellier Cedex 5, France aut NATIONALLICENCE 700 1- Tassin J. IAC Institut Agronomique néo-Calédonien BP73, 98890, Païta, New Caledonia aut NATIONALLICENCE 700 1- Bouvet J.-M Cirad UMR AGAP «Genetic diversity and breeding of forest trees», TA A-108/C, Baillarguet, 34398, Montpellier Cedex 5, France aut NATIONALLICENCE 773 0- Tree Genetics & Genomes Springer-Verlag 9/2(2013-04-01), 511-524 1614-2942 9:2<511 2013 9 11295 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer