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The introduction of plants is not a new phenomenon and is consubstantial with the history of humanity. Travels and the conquest of new lands helped the spread of species from their place of domestication. The migration dynamics of some populations is closely linked to that of the plants necessary for their survival. The Native American saga in the Caribbean basin, which resulted in the introduction of many useful plant species, is an excellent example. In the Lesser Antilles, from the beginning of colonization to the present day, the exogenous species imported from tropical America were added various pantropical taxa. The successive introductions are mainly due to increased exchanges, in principal agricultural ones, the growing economic interests linked to horticultural products and the resurgence of the plant collections in botanical gardens, botanical conservatories and other green and landscaped spaces. The progressive anthropization of the planetary environments often resulted in the invasion of introduced species to the detriment of native taxa. Unlike some islands (Reunion, Mauritius and Tahiti) where the introduced plants caused a true ecological disaster, despite strong anthropization and plant importation, the Lesser Antilles appear to be currently protected from invasive plants. The alien species attempting installation in the natural environment are few in number and have a minor impact. We don’t understand the determinism of this apparent ecosystem resistance. This synthesis article aims to lay the first foundations for an understanding of the existing relationship between the introduced species and the natural vegetation.

The flower plants introduced in the Lesser Antilles: Martinique’s example (general summary of the key data and ecosystem impacts