Avaliação da conservação da Mata Ciliar - estudo do lago novo de Boca do Acre

Abstract

Lago Novo is located in the urban area of ​​the municipality of Boca do Acre, AM. The spring has relevant environmental, social and economic importance for the local population, however, in the last For years, the Lake has been losing much of its riparian forest due to the increase in residents on the banks of the aquifer. The objective of this research was to evaluate the consequences of forest reduction ciliary of Lago Novo. For this, a questionnaire was applied, containing 24 questions, to the residents around the lake. A survey of existing species in the locality was also carried out, five plots were defined on the right bank and five on the left bank, totaling 10 plots of 10 x 10 m, which were also recorded through photographs. The data were organized in a spreadsheet and presented through graphs and tables. The application of the questionnaire revealed some practices, on the part of the residents, that contribute to the degradation of the Lake New, such as the removal and burning of riparian vegetation for agricultural production, the construction of residences and commercial establishments; In addition, some farmers carry out practices unsustainable agricultural practices, such as burning organic matter and applying pesticides to crops; it was also found that 75% of the residents throw their excrements directly into the soil, which can be a potential source of lake water contamination. The floristic survey showed that on the right bank of Lago Novo, where there is a greater flow of people, the level of degradation is higher, in view of the lower density and diversity of species when compared to the left bank, with only one species being observed. exclusive to first against 12 exclusive species in the second. Therefore, some residents around the lake contribute significantly to the removal of riparian vegetation from the spring and the damages resulting from this action, such as reduced fish population, increased water temperature, reduced width of the spring and increased pests. . However, despite the degradation of the riparian forest observed, it is still possible to recover it, because among the species still existing in the locality, the vast majority are native to the region.