New occurrences of bryophytes species in Southern Brazil: bryodiversity still scarcely known

Abstract

Rio Grande do Sul is the southern state of Brazil and includes 569 taxa of bryophytes, a rich diversity promoted by its geographical position. All recent floristic inventories in the state recorded new occurrences of species, indicating that the diversity of bryophytes may be underestimated. Through floristic inventories carried out between 2016 and 2019, new occurrences of 16 species, included in seven families and 11 genera, were identified. Seven of them are also new records for the Southern Brazil. Bryophyta is represented by five species, four genera and four families, and Marchantiophyta by 11 species, seven genera, and three families.

What does a phytophysiognomic mosaic reveal about mosses and liverworts from the subtropical Atlantic Forest?

“…The floristic richness of the bryoflora encountered in the PEVA corresponded to 17 % of that known for Rio Grande do Sul State and 6 % of all of Brazil (Costa & Peralta 2015). Fourteen species encountered in the area were new occurrences for the state (Bordin et al 2020;TS Dewes unpubl.res.). The Restinga forests (SRFR and SWRF) were the richest PEVA phytophysiognomies.…”

“…The geographic distributions of those species vary from Neotropical (Cylindrocolea planifolia, C. rhizantha, Symphyogyna brasiliensis, Lejeunea aphanes, and L. setiloba) (Gradstein & Costa 2003) to global (Bryum argenteum, B. coronatum, and Campylopus flexuosus) (Frahm 1991;Costa et al 2011). Bryum atenense is distributed throughout all of the phytogeographic domains in Brazil, except the Amazon and Pampa, and its occurrence was recently amplified to southern Brazil (Bordin et al 2020).…”

“…Protected areas of Brazil are still greatly in need of biodiversity studies (Oliveira et al 2017). Recent discoveries in Rio Grande do Sul State (Bordin & Yano 2009a;Heidtmann et al 2013;Weber et al 2015;Aires et al 2020;Bordin et al 2020) evidenced the need for more floristic inventories and evaluations of the conservation statuses of bryophytes throughout the country (Frahm 2003).…”

As 100 primeiras espécies de briófitas, com sete novos registros para o Sul do Brasil identificadas no Parque Estadual de Itapeva, Torres, Estado do Rio Grande do Sul

“…e Microlejeunea cystifera Herzog, estão sendo citadas aqui pela primeira vez (figura 2). As demais foram citadas por Bordin et al (2020), como parte de um estudo mais amplo, abrangendo novas ocorrências também para outras áreas do Estado. Não foram encontrados espécimes de antóceros (Anthocerotophyta).…”

“…2 Distribuição conforme Flora doBrasil 2020Brasil (2020. Microlejeunea cystifera, Cololejeunea minutilobula e Lejeunea aphanes conformeBordin et al (2020). Do mesmo modo, Bryum atenense, Lejeunea angusta, Microlejeunea subulistipa e Metzgeria rufula que também apresentam frequência rara no PEVA, encontram-se em substrato específico e foram citadas pela primeira vez para o Estado, ampliando a distribuição geográfica conhecida.…”