<strong><em>Cyathea</em> Sm. (Cyatheaceae) on Trindade Island (Brazil): An integrative approach</strong>

Abstract

Trindade is a Brazilian oceanic island approximately 1,100 km from the American mainland. The Cyathea Sm. plants from Trindade were originally considered an endemic species, Cyathea copelandii Kuhn &amp; Luerssen, but later included in Cyathea delgadii Sternb. Based on molecular data (trnL-trnF, trnG-trnR and rbcL-accD), morphometric analysis of leaf characters, scanning electron microscopy of indusia and spores, and habitat suitability modeling, the present study confirms the status of C. copelandii as a synonym of C. delgadii. Intraspecific molecular variation suggests phylogeographic structuring in C. delgadii and differentiation between the coastal Atlantic Forest domain and the Cerrado domain (savanna) in the interior of Brazil. The Trindade populations are more closely related to the Atlantic Forest populations, indicating a colonization of the island from the latter area.

Perdida em Meio à Vastidão do Oceano Atlântico: Síntese da Tendência de Publicações, Diversidade Biológica e Conservação na Ilha da Trindade

“…previously considered to be endemic, was proved to belong to the broadly distributed C. delgadii Sternb. (Faria et al, 2021). Lücking, M. Cáceres, N.G.…”

Investigating aerial diversity of non‐fungal eukaryotes across a 40° latitudinal transect using DNA metabarcoding

“…Muñoz et al (2004) showed the importance of air currents as an LDD mechanism in the Southern Hemisphere for non‐flowering plant species distributions, demonstrating a pattern of diaspore transfer from South America towards Africa at mid latitudes. More recently, the application of newly available molecular tools to samples obtained on the mid‐Atlantic Trindade Island (Câmara, Menezes, et al, 2022; Faria et al, 2021) has corroborated this hypothesis. Older Antarctic studies based on macroscopic observations of air, snow and moss carpets (e.g.…”