Abstract:Forest restoration projects are usually planted with a reduced number of species as compared to standing forests, largely due to the low availability of native species in seedling nurseries. In the present study, the potential of the native seedling community as a source of seedlings for forest restoration is analyzed. To do so, the seedling community from a forest fragment located in the southeast of Brazil was evaluated. Individuals (tree and shrub species) up to 30 cm height were measured and identified in … Show more
“…These taxa are some of the most diverse families in Brazil (especially with regard to large woody species), and our findings are consistent with several studies conducted in the state of São Paulo (Assumpção et al 1982;Leitão-Filho 1987 al. 2004;Zipparro et al 2005;Oliveira and Godoy 2007;Pereira-Silva et al 2007;Franco et al 2007;Guaratini et al 2008) and more specifically in the administrative region of Sorocaba (Ivanauskas and Rodrigues 1999;Ishara et al 2008;Viani and Rodrigues 2009) on formations of SSF and Cerrado.…”
The Atlantic rain forest is in a very fragmented condition due to the high deforestation in recent decades, thus even remnants of secondary vegetation may be considered important for maintaining the ecological and microclimatic functions on a regional scale. This represents the first plant composition study conducted in the area, located in Sorocaba (São Paulo, Brazil), a region relatively unknown in terms of vegetation. Our aims were to survey the vegetation, verify the vegetation formation in which the sampled species occur and identify endangered species. Periodic samples of woody plants were conducted between September 2007 and December 2009. We found 166 species, belonging to 47 families and 102 genera; ten of these species are under threat of extinction. Our data substantially increase our knowledge of the diversity of the regional flora and will play a crucial role in developing conservation policy.
“…These taxa are some of the most diverse families in Brazil (especially with regard to large woody species), and our findings are consistent with several studies conducted in the state of São Paulo (Assumpção et al 1982;Leitão-Filho 1987 al. 2004;Zipparro et al 2005;Oliveira and Godoy 2007;Pereira-Silva et al 2007;Franco et al 2007;Guaratini et al 2008) and more specifically in the administrative region of Sorocaba (Ivanauskas and Rodrigues 1999;Ishara et al 2008;Viani and Rodrigues 2009) on formations of SSF and Cerrado.…”
The Atlantic rain forest is in a very fragmented condition due to the high deforestation in recent decades, thus even remnants of secondary vegetation may be considered important for maintaining the ecological and microclimatic functions on a regional scale. This represents the first plant composition study conducted in the area, located in Sorocaba (São Paulo, Brazil), a region relatively unknown in terms of vegetation. Our aims were to survey the vegetation, verify the vegetation formation in which the sampled species occur and identify endangered species. Periodic samples of woody plants were conducted between September 2007 and December 2009. We found 166 species, belonging to 47 families and 102 genera; ten of these species are under threat of extinction. Our data substantially increase our knowledge of the diversity of the regional flora and will play a crucial role in developing conservation policy.
“…Nesse sentido, compreender o processo de regeneração natural, pode ser um subsídio fundamental para o manejo, restauração e conservação dos ecossistemas (TEIXEIRA et al, 2014). Muitos trabalhos recentes mostram a regeneração natural da vegetação nativa em sub-bosque de eucalipto, fragmentos e remanescentes florestais (SARTORI et al, 2002;SILVA JÚNIOR et al, 2004;ARAUJO et al, 2004;NERI et al, 2005;SOUZA-FILHO et al, 2007;GONÇALVES et al, 2008;VIANI;RODRIGUES, 2009;ONOFRE et al, 2010;CHAMI et al, 2011;CALEGARI et al, 2013;AVILA et al, 2013;CORRÊA et al, 2014;TEIXEIRA et al, 2014).…”
Regeneração natural de espécies arbóreas em sub-bosque de Eucalyptus saligna Sm., Caieiras, SP Natural regeneration of trees species in the understory of Eucalyptus saligna Sm., Caieiras, SP
Giovano Candiani 1
ResumoO presente estudo teve como objetivo caracterizar a regeneração natural de espécies arbóreas nativas no sub-bosque de uma área com Eucalyptus saligna Sm., considerando-se os mecanismos de regeneração (banco de plântulas, chuva de sementes e banco de sementes). O estudo da comunidade vegetal foi realizado em 30 parcelas de 10 x 10 m, onde foram mensurados os indivíduos arbóreos. O banco de plântulas foi amostrado em sub-parcelas de 1 x 1 m, sendo a amostragem da chuva de sementes realizada em 30 coletores, distribuídas nas parcelas. O banco de sementes foi analisado por meio da coleta de amostras do solo. O banco de sementes do solo, com predomínio de espécies herbáceas, indica o potencial para colonização imediata e restabelecimento da área após possíveis perturbações. A chuva de sementes fornece propágulos que contribuiem para o estabelecimento de espécies neste habitat. O banco de plântulas consiste na principal estratégia de regeneração natural de muitas espécies arbóreas na comunidade vegetal. Analisando-se os resultados obtidos pode-se concluir que o eucalipto possibilita a regeneração natural de espécies arbóreas nativas no sub-bosque.Palavras-chave: regeneração natural; banco de plântulas; chuva de sementes; banco de sementes.
AbstractThis study aimed to characterize the natural regeneration of native trees species in the understory of an area with Eucalyptus saligna Smith., considering the regeneration mechanisms (bank seedlings, seed rain and seed bank). The study of plant community was carried in 30 plots of 10 x 10 m, where individual trees were measured. The seedling bank was sampled in sub-plots of 1 x 1 m. The sampling of the seed rain was carried out in 30 collectors, distributed in the plots. The seed bank was analyzed by collecting soil samples in the plots. The soil seed bank with
“…12.651/2012) (details in Brancalion et al 2016a). Second, we considered only the rainy season of 2015/2016 and species richness may be even higher if a longer period is evaluated, as flowering and fruiting periods have interannual variability (Morellato et al 2001; Viani & Rodrigues 2009; Brancalion et al 2012a). Third, few nurseries adopt good identification practices such as the collection of voucher specimens for depositing in herbaria and examination by professional botanists.…”
Section: Discussionmentioning
confidence: 99%
“…There are 40 to 53 thousand tree species within the tropics (Slik et al 2015) and at least 30 thousand seed plant species in Brazil (Forzza et al 2012; BFG 2015); as expected, there is not enough knowledge on their biology and current distribution. The challenge goes further when considering the process of harvesting propagules for viable seeds and seedlings’ production, restrained by the reduced and degraded forest cover, lack of information on species reproductive biology and phenological patterns, unskilled labor and deficient technical capacity and assistance (Gregorio et al 2004; Viani & Rodrigues 2009; Brancalion et al 2012a; Palma & Laurance 2015; Dedefo et al 2017; Jalonen et al 2018; White et al 2018). Despite these setbacks, representation of regional plant diversity is essential to consolidate a native plant market offering an adequate restoration species pool (i.e.…”
22Brazil has been committed to fulfill international restoration goals and to enforce 23 environmental legislation that will require private landowners to undertake ecological 24 restoration of 21 million hectares of degraded and deforested landscapes. To support a 25 broad range of restoration practices, a consolidated supply chain able to represent 26 regional plant diversity is essential. This study investigated the restoration species pool 27 in native plant nurseries in São Paulo state, southeastern Brazil and evaluated their 28 geographic distribution, similarity of their plant stocks and the proportion of species 29 represented from regional floras. Despite the lack of technical assistance and the large 30 presence of non-native species (126 species, average 7.5 species/nursery), we found still 31 more impressive native species richness in plant nurseries (561 species, average 86.4 32 species/nursery) from both the Atlantic Forest and Cerrado domains, representing 38 to 33 44% of regional floras. There was a huge bias toward tree and shrub species (96.6%) and 34 absence or underrepresentation of other growth forms, as well as of savanna specialists, 35 animal-dispersed and threatened species. The great dissimilarity of species offered in 36 the nurseries surveyed underscores the importance of regional seed collection 37 practices. Effective assistance and capacitation are essential to address issues related to 38 misidentification of species, underrepresentation of most functional plant groups, and 39 the presence of non-native species, as well as to support the supply chain, currently 40 undergoing market downturn.41 42
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