inventory and the surveillance of the dynamics of the restoration of
the forests of Tiéa and of Mr. Metzdorf will be entrusted in
the IRD or completed in partnership. This work breaks down into two
Management of introduced species
Intervention will specifically target invasive species and invertebrates by methods to be tested. Studies that have already been completed in Caledonia envisage the adaptation of efficient methods on the sites most touched by this phenomenon, in other words on sites where the exclusion of the principal threats (fire and herds) is not enough for natural regeneration of the dry forest. A study on the eradication of this ant has been entrusted in the IRD (Zoologie Laboratory) in 2001 on a few hectares at Pindaï.
Identify and protect zones that are candidates for ecological corridors
The provinces will call for an exterior project from the ONF-ONC (French National Forestry and Hunting Bureau) in order to define a hunting plan adapted to each situation. This hunting plan will be able to be put in place by provincial technicians in collaboration with breeders, the chamber of agriculture and the IAC.
and rare species of the sclerophyllous forest will be harvested and
multiplied (germination tests, tests for propagation by cuttings, nursery
behavior, conservation in a seed bank) in order to envisage the reintroduction
of plants into the wild and particularly into priority sites.
Sylviculture : promote natural regeneration
The application of adapted sylviculture (which will not be limited to the arboreal level) must be able to be proposed in order to promote the growth of species of the sclerophyllous forest, by punctual and targeted maintenance. The objective is to improve the natural regeneration and growth of the plants by light culture practices (vine removal, bush removal, clean felling…) at the interior of the Tiéa forest and the forest of Mr. Metzdorf.
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The artificial restoration (ex-situ) goes through the creation of nurseries which allow cultivation of the species of the floral procession of the Caledonian dry forest. The particularity of the dry forest is its high degree of endemism and the lack of knowledge that we have in terms of behavior, assemblage and regeneration. Nursery production of plants is an operational step which goes through the fine tuning of culture practices adapted to each species and which ends which the production of plants whose reproduction is known. This is how the pilot plots will play a prospective role in terms of alternatives to restoration by surveillance of the dynamics of gaining spaces. The goal is to determine the different modalities of restoration envisaged according to the capacity of islets to regenerate themselves.
Multiply the species of the sclerophyllous forest and conserve their seeds
This activity is part of the emergency actions to put in place to avoid, in particular, the disappearance of rare species (case already observed). Measures of vegetative multiplication, such as cuttings or the in vitro technique by publics or private organizations, are to be put in place particularly for the rare species bequeathed to the dry forest of New Caledonia. Additionally, the collection of seeds of these same species must be systematic for studies and for conservation. This activity will allow, after in-depth horticultural studies, and furthermore to propose a list of plants susceptible to be sold on the market.
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