Lycophytes and ferns composition of Atlantic Forest conservation units in western Paraná with comparisons to other areas in southern Brazil

Abstract

This study surveyed lycophyte and fern species in four forest fragments in western Paraná, Brazil, and compared them to 15 other fragments with different plant formations from the Atlantic Forest biome in southern Brazil. In total, five lycophyte species (in two families and two genera) and 98 species and two varieties of ferns (in 16 families and 38 genera) were registered in the four fragments. The most represented families were Pteridaceae (23 spp.), Polypodiaceae (18 spp.), Aspleniaceae (13 spp.), and Thelypteridaceae (11 spp.). Asplenium (12 spp.), Thelypteris (10 spp.), and Blechnum (seven spp.) were among the most represented genera. The occurrence of Dicksonia sellowiana was noteworthy because it was associated with seasonal semideciduous forest and is threatened in Brazil. Similarity among areas was determined by a cluster analysis (UPGMA and Sørensen's index) and the relation between similarity and geographic distance was determined through Matel's analysis. The analyses revealed greater similarity among the four study areas and, for these areas as a whole, greater similarity to fragments in Rio Grande do Sul, which is evidence that these areas have similar environmental conditions.

The ferns and lycophytes of Reserva Natural Guaricica, Antonina, Paraná, Brazil

“…With 204 species, RPPN Guaricica has more ferns and lycophytes than any other area in that state. Its richness is followed by the Guartelá State Park (163 spp., Michelon and Labiak 2013), Vila Velha State Park (152 spp., Schwartsburd and Labiak 2007), Pico Paraná State Park (142 spp., Pereira and Labiak 2018), Ilha do Mel (114 spp., Salino et al 2005), and Iguaçu National Park (101 spp., Lautert et al 2015). Some mountainous areas at Serra do Mar, however, will probably show a higher number of species when studied more thoroughly.…”

“…Cervi et al 1987;Dittrich et al 1999;Borgo and Silva 2003;Kozera et al 2006;Schwartsburd and Labiak 2007), the Seasonally dry forest (e.g. Cervi and Borgo 2007;Lautert et al 2015), and the Campos Gerais (e.g. Michelon and Labiak 2013;Michelon et al 2018).…”

An endangered tree fern increases beta-diversity at a fine scale in the Atlantic Forest Ecosystem

“…Considering that species composition varies widely because of environmental diversity, Lautert et al (2015) suggests that biodiversity conservation should take into account the various Atlantic Forest vegetation types rather than dealing with this domain as a homogeneous unit. Therefore, we can conclude that D. sellowiana promotes spatial turnover within specific habitats at a fine scale and thus should be a focus of conservation action plans.…”

“…Its high biodiversity is partly related to the high environmental diversity (Silva and Casteleti, 2005), which in turn contribute to a wide variation in species composition, resulting in different vegetation types (Lautert et al, 2015). One of these vegetation types is the Restinga, which consists of pioneer and heterogeneous sandy coastal plain vegetation under marine influence (Scarano, 2002).…”

La familia Lindsaeaceae en Argentina.

“…Para la identificación o confirmación de determinaciones previas de los especímenes de herbario se utilizaron claves dicotómicas y descripciones disponibles en los trabajos florísticos de Kramer (1957a), Kramer (1963), Siqueira & Windisch (1998), Prado (2004), Kieling-Rubio & Windisch (2004), Schwartsburd & Labiak (2007), Costa Assis & Salino (2011), Michelon (2012). Adicionalmente, se analizaron trabajos florísticos de los estados Paraná, Santa Catarina y Río Grande do Sul (Sehnem, 1972;Lautert et al, 2015). Dichos estados presentan, hacia el oeste, una vegetación similar a la de la provincia de Misiones.…”