Abstract
The study demonstrated patterns of palm tree diversity on a regional scale in the state of Maranhão. Occurrence points were acquired in February 2021, in online biodiversity banks, using descriptors, "Arecaceae" and "Maranhão". Occurrence records from the Global Information System on Biodiversity-GBIF, Information System that Integrates Primary Data from Scientific Collections-SpeciesLink, Reflora and Information System on Brazilian Biodiversity-SiBBr were used. The data underwent cleaning to remove doubtful information and organize the coordinates and, in the end, totaled 235 records of 41 species and 2 hybrids, belonging to 15 genera for 57 municipalities in the state of Maranhão. The municipalities with the highest numbers of occurrences of palm trees were Codó, Carolina, Balsas, Zé Doca, Bom Jardim, Mirador and Estreito, the other 50 municipalities had between one and five occurrences. The squares with the greatest richness (10 to 14 species) were found in conservation units and indigenous lands, demonstrating a distribution pattern with an aggregation of occurrence points.
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