Checklist of the flora of the restingas of Piauí state, Northeast Brazil

Abstract

Sandy coastal plain vegetation (Restinga) is composed of communities of plants that grow on Quaternary Neosols along the entire extension of the Brazilian coast. The state of Piauí has a coastal extension of 66 km and is entirely located in the semi-arid zone of Northeastern Brazil. This study catalogued the phanerogam species found along the coast of the state of Piauí, the data of which was compiled from surveys in online databases and literature, and herbarium collections. A total of 363 species distributed among 235 genera, and 74 families were identified. The families with the greatest number of species included Fabaceae (108 species), Euphorbiaceae (19), Amaranthaceae (13), Apocynaceae (12), Cyperaceae (12), Rubiaceae (12), Bignoniaceae (11), Malvaceae (11) and Poaceae (11) and represent over 57.6% of the species collected. Approximately 87% of the species were common to other restinga areas in Northeastern Brazil, and ca. 13% were restricted to the coast of the state of Piauí.

Vascular flora of Lençóis Maranhenses National Park, Maranhão State, Brazil: checklist, floristic affinities and phytophysiognomies of restingas in the municipality of Barreirinhas

“…Matrix of similarity coefficients (Jaccard) between the compared areas. Barreirinhas: this study; Pará state: Algodoal/ Maiandeua and Crispim/Marapanim (Amaral et al 2008); Piauí state (Santos-Filho et al 2015); Maranhão state (Almeida Junior et al 2017); Ceará state (Santos-Filho et al 2011). In relation to the species habit, the data was found to be similar to other flora studies of restingas in Northern and Northeastern Brazil (e.g.…”

“…In relation to the species habit, the data was found to be similar to other flora studies of restingas in Northern and Northeastern Brazil (e.g. Amaral et al 2008;Santos-Filho et al 2015;Oliveira et al 2015), with the predominance of herbaceous species, followed by shrub and tree species, reinforcing the vegetation classification of the region (sensu IBGE 2012) as pioneer formations, with a higher number of species adapted to survive in adverse situation (Oliveira et al 2015). According to Martins & Batalha (2011) herbs, in general, present the best resistence to drought, withstanding high luminosity and strong winds, making it possible for them to survive in different restinga physiognomies in the PNLM.…”

“…Figure 6. Dendogram of Floristic Similarity between the study areas analysed: Barreirinhas: this study; Pará state: Algodoal/ Maiandeua and Crispim/Marapanim (Amaral et al 2008); Piauí state (Santos-Filho et al 2015); Maranhão state (Almeida Junior et al 2017); Ceará state (Santos-Filho et al 2011).…”

“…The floristic composition of the area studied was compared with surveys completed in areas of restinga Northern and Northeastern Brazil: data from two areas in the state of Pará, in the municipalities of Algodoal/ Maiandeua and Crispim/Marapanim (Amaral et al 2008) were compiled and merged into a list for Pará state restingas; a first compilation of the vascular flora of the restingas in Maranhão state, based on herbarium survey (Almeida Júnior et al 2017); restingas in Piauí state, in the municipalities of Ilha Grande, Parnaíba, Luís Correia and Cajueiro da Praia (Santos-Filho et al 2015); and a checklist of the restingas in the state of Ceará (Santos-Filho et al 2011). All of these listings had synonymy adjusted manually according to consultation of the Flora of Brazil 2020 database.…”

Bryophyte communities of restingas in Northeastern Brazil and their similarity to those of other restingas in the country

“…Floristic, phytosociological, taxonomical, ecological and/or conservation studies have been conducted in areas of restinga in Brazil for both phanerogams (Assumpção & Nascimento 2000;Almeida Jr. et al 2009;Pires et al 2012;Monteiro et al 2014;Fernandes & Queiroz 2015;Santos-Filho et al 2015) and ferns and lycophytes (Behar & Viégas 1992;1993;Santos et al 2004;Athayde Filho & Windish 2006).…”