Community structure and comparative analysis of the woody component of a cerrado remnant in Southeastern Brazil

Abstract

-(Community structure and comparative analysis of the woody component of a cerrado remnant in Southeastern Brazil). The aims of the present work were to carry out a floristic-structural study of the shrubby-arboreal component of a savanna fragment (cerrado sensu stricto) in São Paulo State, Southeastern Brazil, and to compare with other areas. Twentyone plots of 250 m² each were delimited and plants with stem basal diameter equal or superior to 3 cm were included in the sampling. The recorded individuals corresponded to 3,062 and 58 species belonging to 34 families were registered. Asteraceae had the largest number of species (seven), followed by Fabaceae and Myrtaceae (five each). The most important species were Tibouchina stenocarpa and Anadenanthera falcata. The floristic composition of the study area indicates that it might be considered a transition from cerrado to seasonal semi-deciduous forest. The comparison with other surveys indicates floristic-structural heterogeneity of these cerrado areas and the multivariate analysis showed that areas grouped according to their geographical position and soil type. Key words: phytosociology, savanna, similarity RESUMO -(Estrutura da comunidade e análises comparativas do componente lenhoso de um remanescente de cerrado na região Sudeste do Brasil). O presente estudo teve como objetivo realizar um levantamento florístico-estrutural da comunidade arbustivo-arbórea de um fragmento de cerrado sensu stricto no Estado de São Paulo e compará-lo com outras áreas de cerrado. Foram delimitadas 21 parcelas de 250 m 2 cada onde as plantas com diâmetro basal do caule igual ou superior a 3 cm foram incluídas na amostragem. Foram registrados 3062 indivíduos pertencentes a 58 espécies e 34 famílias. Asteraceae apresentou o maior número de espécies (sete), seguida por Fabaceae e Myrtaceae (cinco cada). As espécies mais importantes foram Tibouchina stenocarpa e Anadenanthera falcata. A composição florística da área de estudo indica que esta pode ser considerada como uma transição entre cerrado e floresta estacional semidecídua. A comparação com outras áreas indicou que há considerável heterogeneidade florístico-estrutural nas áreas de cerrado e as análises multivariadas mostraram que as áreas comparadas se agruparam de acordo com sua posição geográfica e tipo de solo.

Cerrados in Argentina? Structure, diversity and biogeography of the woody component of a savanna in the Misiones Province

“…Open grassland (campo limpo, in Portuguese) has a denser herbaceous vegetation with almost any arboreal component when compared to the typical Cerrado (Cerrado sensu stricto, Ribeiro & Walter 2014). Regarding absolute dominance values (the area covered by the transection of all trunks present in the site), the data was similar to the dominance found in some areas of typical Cerrado (Uhlmann et al 1998;Durigan et al 2002;Ishara 2010), although we found lower values than other sites (Toppa 2004;Ishara & Maimoni-Rodella 2010). Absolute density was similar to closed field (campo cerrado, in Portuguese) in Paraná (Uhlmann et al 1998) and typical Cerrado in São Paulo (Durigan et al 2002), and lower than other sites in São Paulo (Ishara 2010;Ishara & Maimoni-Rodella 2010;Carmo et al 2012).…”

“…Regarding absolute dominance values (the area covered by the transection of all trunks present in the site), the data was similar to the dominance found in some areas of typical Cerrado (Uhlmann et al 1998;Durigan et al 2002;Ishara 2010), although we found lower values than other sites (Toppa 2004;Ishara & Maimoni-Rodella 2010). Absolute density was similar to closed field (campo cerrado, in Portuguese) in Paraná (Uhlmann et al 1998) and typical Cerrado in São Paulo (Durigan et al 2002), and lower than other sites in São Paulo (Ishara 2010;Ishara & Maimoni-Rodella 2010;Carmo et al 2012). Most of the sampled individuals were included in the same height class identified in several other studies (Uhlmann et al 1998;Toppa 2004;Ishara 2010;Ishara & Maimoni-Rodella 2010).…”

“…Absolute density was similar to closed field (campo cerrado, in Portuguese) in Paraná (Uhlmann et al 1998) and typical Cerrado in São Paulo (Durigan et al 2002), and lower than other sites in São Paulo (Ishara 2010;Ishara & Maimoni-Rodella 2010;Carmo et al 2012). Most of the sampled individuals were included in the same height class identified in several other studies (Uhlmann et al 1998;Toppa 2004;Ishara 2010;Ishara & Maimoni-Rodella 2010). However, the studied community shows a different structure and diversity when compared with nearby forest environments (Velazco et al 2015).…”

“…Regarding Leptolobium elegans importance value, other studies achieved similar results. The species was one of the six more important in open grassland and typical Cerrado physiognomies in Paraná (Uhlmann et al 1998) and São Paulo (Meira Neto 1991;Durigan et al 2002;Toppa 2004;Ishara 2010;Ishara & Maimoni-Rodella 2010;Prado Júnior et al 2012). A typical Cerrado represents a savanna with sparse short arboreal elements of gnarled trunk and branches.…”

Evaluation of angiogenic and embryotoxic activity of the extract of Anadenanthera peregrina (Angico-do-Cerrado)

“…Within this genus yet another specie Anadenanthera colubrina. Multiple uses of species Anadenanthera have been reported in the literature (Ishara;Maimoni-Rodella, 2010;Cunha et al 2020). The use of bark and seeds have healing action in wound treatment (Pessoa et al 2012;Pessoa et al 2015), antioxidant effect, anti-inflammatory, antimicrobial and use in respiratory diseases (Weber et al 2001;Gama et al 2018).…”