Modes de colonisation de la savane arborée par des plantes de forêt tropicale sèche en Nouvelle-Calédonie

Bocquet Aurélie, Chambrey Céline, Derroire Géraldine, Tassin Jacques. 2007. Modes de colonisation de la savane arborée par des plantes de forêt tropicale sèche en Nouvelle-Calédonie. Revue d'Ecologie, 62 (1) : 87-91.

Titre anglais : Modalities of colonization of woody savannah by dry forest plants in New Caledonia

Résumé : Dry forests are the most endangered tropical forests in the world. Fortunately, they sometimes show some ability to colonize abandoned lands. Such a colonization potential has been investigated in the south of New Caledonia (Pacific Ocean). We analyzed the composition of the vegetation from transects from dry forest to proximate woody savannah, where an extension of the forest had been observed from the analysis of old aerial pictures. Three transects were followed in each of the four studied sites. Among 52 observed species, six were observed in more than 50% of the plots belonging to colonized sites. Among these six species, four provided suckers: Croton insularis, Elattostachys apetala, Emmenosperma pancherianum and Halfbrdia kendac. Ornithochory and barochory represented the dominant modes of seed dispersal of the colonizing species. Consequently, we conclude that fire control and bird conservation are relevant components of the conservation strategy of dry forest in New Caledonia.

Mots-clés Agrovoc : forêt tropicale

Mots-clés géographiques Agrovoc : Nouvelle-Calédonie, France

Classification Agris : F40 - Écologie végétale

Champ stratégique Cirad : Axe 6 (2005-2013) - Agriculture, environnement, nature et sociétés

Auteurs et affiliations

• Bocquet Aurélie, IAC (NCL)
• Chambrey Céline, IAC (NCL)
• Derroire Géraldine, ENGREF (FRA) ORCID: 0000-0001-7239-2881
• Tassin Jacques, CIRAD-ES-UPR Dynamique forestière (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/540603/)

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