Environmental structure and relationships in the setting of natural water springs in a Lower Highland Seasonal Forest in Brazilian South

Abstract

The aim of this research was to characterize an environmental structure in the setting of tree natural water springs in a Lower Highland Seasonal Forest, and to verify the relationship between community demography and soil variables as subsidies for species identification in riparian forest recovery programs in similar environments. The research was carried out in the National Forest of Chapecó, located in the west of the state of Santa Catarina in the southern region of Brazil. For this, three water springs were demarcated, where 26 plots of 200m² in each were allocated. All individuals with diameter at 1.30m of soil height ≥5.0cm were measured. Soil samples (0 to 20cm depth) were collected in the plots for chemical and physical analysis. To relate the abundance of the species to the edaphic variables, the Canonical Correspondence Analysis (CCA) was used. A total of 76 species belonging to 64 genera of 36 botanical families were reported in the study area. The families Fabaceae and Myrtaceae presented greater floristic richness. The edaphic variables that most influenced the distribution of the species were aluminum saturation and calcium, magnesium and potassium contents. Specific groups of indicator species were formed for each water spring. The species designated as generalists are the most recommended for the initial filling and recovery of degraded springs. Further rare species and with low density must be included after the initial recovery to increase diversity.

Ecological Aspects of Riparian Forest Remnants in the São João River Basin, Paraná

“…The species listed in this study are widely recognized as occurring in ciliary forests (FLOSS et al, 2018), especially in the Campos Gerais region of Paraná (CARMO; ASSIS, 2012), and are considered essential for the forest structure and ecological restoration projects in the area (SILVA et al, 2013). Besides branquilho, a species that was found in all collection stations, "angico" (Anadenanthera colubrina) also stood out in the area, especially in the US.…”

Short-term effects of passive restoration in springs habitats in Southern Brazil

“…The vegetation data was assessed in eight plots of 2 m x 2 m in each spring systematically installed in the Permanent Preservation Area (PPA) and forming a cross-section (FLOSS et al 2018). Four plots were installed at five meters from the spring in each of the four cardinal directions (north, south, east, west) and another four plots at 30 meters from the spring, arranged at an angle of 45° in relation to other plots.…”

Análise Do Banco De Sementes Do Solo, Em Área Ciliar Da Cachoeira Domingos Lopes, Morro Do Chapéu, Bahia, Brasil

“…As florestas ciliares estão diretamente associadas a manutenção dos recursos hidrológicos, pois evitam o assoreamento do ambiente aquático, contribui para manutenção da qualidade da água, além do papel ecológico que exerce (MARMONTEL;RODRIGUES 2015;LACERDA;BARBOSA, 2018). O conhecimento destas áreas é de grande valia, principalmente no fornecimento de informações que auxiliem em programas de reflorestamento e recuperação de áreas perturbadas (SEUBERT et., 2016;FLOSS et al, 2018).…”