Corticolous green algae from tropical forest remnants in the northwest region of São Paulo State, Brazil

Abstract

-(Corticolous green algae from tropical forest remnants in the northwest region of São Paulo State, Brazil). The algae inhabit a wide variety of terrestrial environments and substrates; however the taxonomic knowledge for tropical regions is still scarce. This survey was conducted in ten forest remnants in São Paulo State where visible growths of algae and bryophytes were collected and studied for the main algal components of the communities. Results reveal the occurrence of nine species of green algae, distributed through the class Trebouxiophyceae (one species), Charophyceae (one species) and Ulvophyceae (seven species). Desmococcus olivaceus (Persoon ex Archerson) J. R. Laundon and Printzina effusa (Krempelhüber) Thompson & Wujek are new records for Brazil. The most frequent organisms found in the areas pertain to Trentepohliales that is mainly represented by Trentepohlia species. On the basis of results found, it is recommended that such communities receive more attention in future investigations to improve the knowledge about this important group of primary producers.Key words -Brazil, seasonal semideciduous forest, terrestrial algae, Trentepohlia RESUMO -(Algas verdes corticícolas de remanescentes de fl oresta tropical na região noroeste do Estado de São Paulo, Brasil). As algas habitam uma grande variedade de ambientes e substratos terrestres; entretanto o conhecimento taxonômico para as regiões tropicais ainda é escasso. Esse levantamento foi conduzido em 10 fragmentos fl orestais no Estado de São Paulo, onde crescimentos visíveis de algas e briófi tas foram coletados e os principais componentes da comunidade algal foram estudados. Os resultados revelaram a ocorrência de nove espécies de algas verdes, distribuídas nas classes Trebouxiophyceae (uma espécie), Charophyceae (uma espécie) e Ulvophyceae (sete espécies). Desmococcus olivaceus (Persoon ex Archerson) J. R. Laundon e Printzina effusa (Krempelhüber) Thompson & Wujek são novos registros para o Brasil. Os organismos mais frequentes nas áreas pertencem a Trentepohliales, que foi representado principalmente por espécies de Trentepohlia. Baseado nos resultados encontrados, é recomendado que tais comunidades recebam mais atenção em investigações futuras para aumentar o conhecimento sobre esse importante grupo de produtores primários.Palavras-chave -algas terrestres, Brasil, fl oresta estacional semidecidual, Trentepohlia 1.

Phylogenetic position and morphology of lichenized Trentepohliales (Ulvophyceae, Chlorophyta) from selected species of Graphidaceae

“…astaxanthin) at light exposed sites (Tischer 1936). It is well known that these algae are very polymorphic at the species level, especially in relation to environmental conditions (Thompson & Wujek 1997;Rindi & Guiry 2002;Rindi et al 2005;Martins Lemes-da-Silva et al 2010). In most studies, determinations at species level were proposed based on cell shape and size, arrangement of the main axes, branching pattern, arrangement of the zoosporangia and shape and size of gametangia (Printz 1939;Sarma 1986;Rindi & Guiry 2002;Rindi & López-Bautista 2007;Rindi et al 2008).…”

New aerophytic morphospecies of Cyanobacteria from tropical forest fragments in northwestern São Paulo state, Brazil

“…Detailed description of collection, preservation and study can be found in Lemes-da-Silva et al (2010). In short, visible growths of algae, cyanobacteria and bryophytes were collected from randomly selected tree bark.…”

Study of terrestrial diatoms in corticolous assemblages from deciduous trees in Central Europe with descriptions of two new Luticola D.G.Mann taxa

“…Thanks to cracks, they retain moisture, protect against wind, and provide shade and nutrients that are compounds from accumulated dust which dissolve in rainwater (Kawecka and Eloranta 1994). Algae inhabiting tree trunks have been the subject of a few studies, most of which focused on green algae and cyanobacteria (Foerester 1971;Wylie and Schlichting 1973;Mrozińska 1990;Thompson and Wujek 1997;Salleh and Milow 1999;Czerwik and Mrozińska 2000;Neustupa 2003Neustupa , 2005Soni and Shukla 2006;Škaloud 2008, 2010;Lemes-Da-Silva et al 2010;Bhakta et al 2014;Kharkongor and Ramanujam 2014;Štifterová and Neustupa 2015;Narasimha Rao 2017;Ambika and Krishnamurthy 2018). In research on bark-associated algae, diatoms have been reported rarely to date and are usually only listed as single taxa in species' lists (Neustupa and Škaloud 2010;Neustupa and Štifterová 2013;Kharkongor and Ramanujam 2014;Štifterová and Neustupa 2015;Nirmala et al 2016;Eldrin 2019).…”