Abstract
Abstract Área de Proteção Ambiental das Lagoas e Dunas do Abaeté (APA Abaeté) is an urban fragment of restinga in an environmentally protected area in the municipality of Salvador, Bahia, Brazil. The area is impacted by irregular disposal of solid waste, clandestine removal of sand from dunes, suppression and fragmentation of original vegetation cover and urban growth of neighborhoods. A recent floristic study revealed new records of orchid species for this conservation unit but highlighted strong threats to the orchid flora. In this context, a taxonomic study of Orchidaceae in APA Abaeté was undertaken with the aim of facilitating the recognition of species in the field and supporting the establishment of more effective local conservation actions for orchids, which should include the manual dispersion of seeds and the relocation of individuals. Orchidaceae is the sixth most represented family in APA Abaeté, with 15 genera and 19 species, including Encyclia dichroma and Koellensteinia florida, endemic species of the Atlantic Forest. The most relevant morphological characteristics for the identification of species in the area are: growth type; climbing habit; caulome thickness; shape and consistency of leaf blades; inflorescence type and position; and color and resupination of flowers.
Highlights
Orchidaceae has high species richness in the Brazilian Atlantic Forest, including dozens of ornamentals plus endangered and endemic species (Barberena et al 2018, 2019a; Flora do Brasil 2020)
Orchidaceae is one of the most representative botanical families in Brazilian restingas, with 51 genera and 78 species occurring in restinga remnants of Bahia alone (Assis et al 2004; Flora do Brasil 2020)
We undertook a taxonomic study of Orchidaceae of the aforementioned restinga fragment, which is surrounded by the international airport of Salvador and expanding neighborhoods, with the aim of facilitating the recognition of species in the field and supporting the establishment of more effective local conservation actions for orchids
Summary
Orchidaceae has high species richness in the Brazilian Atlantic Forest, including dozens of ornamentals plus endangered and endemic species (Barberena et al 2018, 2019a; Flora do Brasil 2020). Resupinate, ecalcarate; pedicel+ovary 4.1–11.2 cm long; sepals and petals brownish-yellow, margin entire; dorsal sepal 1.5–3.5 × 0.3–0.6 cm, narrow-elliptical to oblong-lanceolate, apex acute; lateral sepals 1.5–3 In APA Abaeté, the species occurs in shrub and restinga forest formations (Barberena et al 2019a).
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