Ecological Aspects Related to Ligneous Vegetation in the Permanent Preservation Areas of Mineiros, Goiás, in Light of the New Native Vegetation Protection Policy - Law 12.651/2012

Abstract

-Permanent preservation areas (PPAs) adjacent to drainage channels may include forests, savannahs, or grassland Under a former environmental legislation ("Forest Code"), it was required to maintain a strip of native vegetation (at least 30 m wide) at the margin of any drainage channel, to support environmental functions. Under the current native vegetation protection policy, if a riparian margin was degraded prior to 2008, the landholder is required to regenerate a strip of only 5-20 m, in some cases. The present study evaluated and compared the ligneous vegetation structure in 10 preserved PPAs (following the requirements of the old law) and 10 degraded PPAs (conforming to the current environmental legislation), in Mineiros municipality, southwest Goiás. Sixty plots measuring 15 m × 30 m were delineated, and data for all ligneous individuals with a diameter at breast height (DBH) > 5 cm were recorded. A total of 2,662 individuals were documented, distributed among 208 species. Of the total, 1,573 individuals belonging to 167 species were from the preserved PPAs, and 1,089 individuals across 142 species were from the degraded PPAs. According to these results, the preserved PPAs were richer in species composition than in the degraded PPAs (245.5 ± 34.36 and 213.3 ± 34.1, respectively), in addition to being more abundant in terms of individuals. The importance value index (IVI) was well distributed among the species. All the degraded PPAs presented signs of erosion. It was concluded that the reduced width of the PPAs (5-20 m) under the current native vegetation protection policy would result in a loss of the environmental functions sought by the legislation.. Keywords

Association between forest resources and water availability: temporal analysis of the Serra Azul stream sub-basin

“…The application of these types of projects allows for several long-term benefits, such as economic development, job creation, degraded areas restoration and adaptation to climate change. According to Ellison et al (2017) and Siqueira et al (2016), the guarantee of ecosystem services through PSA actions enables the conservation of fauna and flora genetic flow and guarantees the preservation of water bodies PPA, contributing to the water springs do not undergo erosion processes.…”

Analysis of land use and cover in the hydrographic basin of the Coco River and its implications on Permanent Preservation Areas as a tool in water resources management

“…FONTE: Elaborado pelo autor ju (PA), onde observaram 9.202,21 ha de passivo ambiental em APPs, entretanto, destes, somente 3.617,21 ha estão sujeitas à recomposição, ou seja, haverá uma perda de 60,69% da área total de APPs nessas propriedades, que legalmente deixarão de ser restauradas com a aplicação do novo código florestal, uma vez que muitos usos existentes são considerados consolidados. Nesta perspectiva, Siqueira et al (2016), ao estudarem os aspectos ecológicos da vegetação lenhosa em áreas de preservação permanente, observaram que a presença de áreas consolidadas podem trazer alterações na estrutura e funcionamento das APPs existentes no Brasil com perdas significativas de espécies e indivíduos, fazendo com que estas áreas deixem de cumprir as funções ambientais previstas na legislação.…”

Riparian zones (PPAs) in the landscape of the sub-basins of the Corumbataí and Piracicaba rivers in front of the New Forest Code (NVPL) of 2012

“…In this context, Siqueira et al (2016), while studying the ecological aspects of woody vegetation in PPAs, observed that the presence of consolidated areas can lead to changes in the structure and functioning of existing PPAs in Brazil, resulting in significant species and individual losses, making these areas fail to fulfill the environmental functions provided for in the legislation.…”