Estrutura da comunidade de liquens corticícolas em área urbana e rural no município de Novo Hamburgo, Rio Grande do Sul, Brasil

Abstract

RESUMO -O objetivo do estudo foi analisar a composição e estrutura da comunidade de liquens foliosos e fruticosos corticícolas em área urbana e rural do município de Novo Hamburgo, RS. Foram analisados dez forófi tos em cada área e o mapeamento das espécies realizado pelo método do acetato. Foram analisados os parâmetros: riqueza, frequência, cobertura e valor de importância em cada área. No total foram identifi cadas 55 espécies para as duas áreas. A riqueza foi similar entre as áreas: urbana (33) e rural (32). As espécies mais frequentes foram Dirinaria picta (Sw.) Clem. & Shear e Parmotrema reticulatum (Nyl.) Hale, enquanto Canoparmelia texana (Tuck.) Elix & Hale e Parmotrema tinctorum (Nyl.) Hale obtiveram os maiores valores de importância. A área rural apresentou melhores condições para o desenvolvimento dos liquens. Este trabalho contribui para o conhecimento da micobiota na região, podendo ser utilizado em futuros estudos de monitoramento ambiental. Palavras-chave: diversidade, foliosos, fruticosos, fungos liquenizadosABSTRACT -Community structure of corticolous lichens in urban and rural areas in the municipality of Novo Hamburgo, Rio Grande do Sul, Brazil. In this paper we analyzed the composition and the corticolous lichen community structure of foliose and fruticose species in urban and rural areas in the municipality of Novo Hamburgo, RS. We analyzed ten phorophytes in each area and mapped species by using the acetate method. The parameters analyzed in each area were: richness, frequency, coverage and importance value. A total of 55 lichen species were identifi ed for both areas. Richness was similar among areas: urban (33) and rural (32). The most common species were Dirinaria picta (Sw.) Clem. & Shear and Parmotrema reticulatum (Nyl.) Hale, while Canoparmelia texana (Tuck.) Elix & Hale and Parmotrema tinctorum (Nyl.) Hale, had the highest importance values. The rural area had better conditions for lichen development. This work contributes to the knowledge of the mycobiota in the region and may be used for future studies on environmental monitoring.

Distinct lichen community in riparian forests along an anthropogenic disturbance gradient in Southern Brazil

“…Studies with vascular epiphytes in the HBSR area have verified changes in richness and diversity of the riparian forest sites in different matrices and have emphasized the importance of their conservation and preservation (Rocha-Uriartt et al 2016). In this study, we found that the preservation actions associated with agropastoral practices were decisive for the conservation of habitats, such as in the S4 forest site of the rural-urban matrix, in which rare species were found, including Herpothallon pustulatum (crustose) and the genera Ricasolia and Sticta, which are known to occur in more preserved environments (Käffer & Martins 2014;López et al 2016;Lehnen et al 2017).…”

Emmanuelia, a new genus of lobarioid lichen-forming fungi (Ascomycota: Peltigerales): phylogeny and synopsis of accepted species

“…In the present study, yet another new genus, Emmanuelia, is erected to accommodate a group of lobarioid lichens that cannot be placed in any of the existing genera. The species of interest belong to a lineage mostly restricted to the Neotropics and the southeastern United States, and were previously treated as members of the genus Lobaria and subsequently considered part of Ricasolia (Moncada et al 2013;Käffer et al 2016;Lehnen et al 2017;Etayo et al 2018). Yoshimura (1998) treated the South American taxa as L. quercizans group, also implying a close relationship to Ricasolia.…”