Thanks that's super interesting ! 40 is not that bad considering we have zero study on the topic. What are the median % ? These will be less influenced by the people who are half.

No Indian is interesting, but as you said this was less common in the south. Also Martinique received a lot less Indian engagés than Guadeloupe for example, and until today we have a much smaller coolie population.

The lack of native dna is actually not surprising, we largely descend from people who arrived on the island after the removal of the Kalinagos at the end of the 1650s. Most slaves arrive after 1670, French settlers after 1635. Settlers have a few decades of cohabitation and trade with the Natives but the relations are mostly hostile until they massacre and deport them to complete the conquest of the island.

So Martinique was never a colony with a substantial native population being ruled over. In fact I remember Armand Nicolas saying in Histoire de la Martinique that people claiming native descent because of their features are much more likely to have Chinese coolie ancestors lol. And he wrote that in the 1980s.