LICENCIAMENTO AMBIENTAL E DIVERSOS
URI permanente para esta coleçãohttps://bdc.icmbio.gov.br/handle/cecav/6
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11 resultados
Resultados da Pesquisa
- Campos de atuação e os desafios da arqueologia empresarial no Brasil(2021-03-04) Callegari Jacques, Clarisse; Batista de Carvalho, AdrianoIn the context of an increase in infrastructure projects at the same time as Brazilian legislation seeks to regulate and guide permissions for archaeologists to undertake research associated with environmental licenses, the number of archaeology consulting firms has been growing in numbers. Other fieldworks worth mentioning concerning contract archaeology are cave evaluations, restoration of the historic building as well as museum consulting. Many issues have emerged along with the growth of research in contract archaeology. One of the most discussed is the research quality and archaeologist’s ethic commitment. Dialogue between archaeologists who work in different research contexts is crucial to the evolution of this debate, especially when social sciences lack governmental funding and seek society acknowledgement.
- An approach to map karst groundwater potentiality in an urban area, Sete Lagoas, Brazil(2020-09-28) Magnabosco, Rafael; Galvão, Paulo; de Carvalho, Ana MacielDue to complex hydrogeological contexts, mapping groundwater potential zones in karst regions is a difficult task. This study was conducted on a karst terrain in Sete Lagoas, Brazil, where rapid urban growth without adequate water resources management resulted in the drilling of unproductive wells and possible aquifer over-exploitation due to the concentration of wells. The objective was to develop a method for mapping groundwater potentiality for karst aquifers, serving as water resources management tool, based on 3D geological modelling, field work and pumping test data, remote sensing, geophysics analysis and production of thematic maps, resulting in the hydrogeological conceptual model. The groundwater potentiality map showed that most potential zones are on the central area, limited by grabens, where limestones are in contact with unconsolidated sediments, on areas with higher density of morphostructural and geophysical lineaments, mainly in east–west and north–east directions, near karst surface features, on thicker karstified zones, with higher recharge rates.
- Ecological preferences of neotropical cave bats in roost site selection and their implications for conservation(2020-06) de Sousa Barros, Jennifer; Bernard, Enrico; Lopes Ferreira, RodrigoBats frequently use caves as roosts due to higher environmental stability and protection. However, species-specific ecological and physiological requirements and conditions of roosts and their surroundings can influence species presence. Little is known on cave choice by bats in the Neotropics, a species- and cave-rich region. Understanding how bats, cave characteristics and the surrounding landscape are related with each other helps the management and conservation of bats and caves. Based on sampling 19 caves using both diurnal observations and captures, we tested (1) whether bat richness was positively related to cave temperature, humidity, size, stability, and heterogeneity of microhabitats, and the preservation and heterogeneity of the surrounding landscape in central Brazil; (2) whether cave and landscape characteristics influenced on species composition; (3) how species responded to cave and landscape variables; and (4) whether these relationships changed between seasons. Temperature was a limiting factor, whereas environmental stability, humidity, and structural attributes of caves favored the occurrence of more species. Larger caves, rich in microhabitats – but more stable than the external environment – supported more species, especially in the dry season. Landscape context did not influence species richness and composition in the caves, but the percentage of vegetation around caves was important for certain species. Our results highlight the influence of environmental variables in the process of cave selection by Neotropical bat species. Moreover, we emphasize the importance of cave protection for bats and provide useful information for decision-making in processes of environmental licensing.
- Natural background levels and validation of the assessment of intrinsic vulnerability to the contamination in the Carste Lagoa Santa Protection Unit, Minas Gerais, Brazil(2019-12-21) Aragão, Frederico; Nunes Menegasse Velásquez, Leila; Galvão, Paulo; de Castro Tayer, Thiaggo; Nogueira Lucon, Thiago; Ruchkys de Azevedo, ÚrsulaThe contamination of karst aquifers by anthropogenic activities causes a major issue regarding environmental policies, since they present high sensitivity, influenced by unique features such as dolines, swallow holes, and conduits. This paper is focused on the Carste Lagoa Santa Protection Unit, MG, Brazil, and presents three main objectives: to determine the natural background levels of chloride, nitrate, sulfate, and phosphate; to indicate the locations where the concentrations of those parameters exceed the natural background levels in the existing vulnerability map and, finally, to determine the proportion of the areas (in percentage) where this surpassing occurs, according to the vulnerability classes (high, moderate and low). Results have shown values (90th percentile) of 2.4 mg/L, 1.0 mg/L, 5.3 mg/L, and 0.1 mg/L, for Cl−, NO3−, SO4−2, and PO4−3, respectively, indicating that for all four parameters, there were areas (mainly distributed within moderate vulnerability portions) where the values were surpassed, which suggests anthropogenic activity due to the presence of urban settlements and agricultural activities. Therefore, the proposal of natural background levels was essential to understand the hydrochemistry of the studied region.
- Conservation paradox: Large-scale mining waste in protected areas in two global hotspots, southeastern Brazil(2020-03-16) Hiromi Yoshino Kamino, Luciana; Oliveira Pereira, Eric; Fonseca do Carmo, FlávioIrreversible losses of natural areas and damage to ecosystem services are caused by large-scale mining. These effects are prominent in Minas Gerais, which is home to a mining industry with hundreds of tailings dams concentrated in global hotspots: the Cerrado and the Atlantic Forest. We present an overview of the spatial overlap between protected areas (PAs), priority conservation areas (PCAs), tailings dams, and their influence areas. A total of 218 dams accumulated environmental costs and liability that are represented by 2.24 thousand million m3 of tailings and industrial waste. Most dams (≈ 70%) are located in PCAs, 45 dams in conservation units, 58 in their respective buffer zones, and 51 in special protection areas. We have identified an urgent need to implement adequate public policies to establish management and monitoring mechanisms in PAs and PCAs and to address a scenario of high potential for socioenvironmental damage associated with tailings dams.
- Análise de relevância de cavernas: uma revisão da IN 02/2017 sob a perspectiva dos morcegos(2020-11) Barros, Jennifer; Da Cunha Tavares, Valeria; Dias-Silva, Leonardo Henrique; Milagres, Augusto; da Rocha, Patrício Adriano; Guimarães, Maricelio; Bernard, EnricoA relação entre várias espécies de morcegos e ecossistemas cavernícolas é altamente especializada, complexa e frágil. Comunidades de invertebrados cavernícolas são, frequentemente, dependentes do guano dos morcegos para sua sobrevivência, assim como os próprios morcegos dependem também destes abrigos para atividades sociais, proteção, descanso e reprodução. No Brasil, espécies associadas a cavernas tornaram-se mais susceptíveis a impactos decorrentes da destruição de seus abrigos, principalmente após alterações na legislação que flexibilizaram a proteção desses ambientes. A atual legislação determina que cavernas inseridas em áreas passíveis de licenciamento ambiental devem passar por um processo de classificação quanto ao seu grau de relevância. Estas regras estão incluídas na Instrução Normativa 02/2017 do Ministério do Meio Ambiente. Avaliamos aqui as disposições na IN 02/2017 considerando o grupo dos morcegos como foco específico, e considerando a clareza, objetividade, e aplicabilidade prática da normativa, bem como pontos frágeis e critérios subjetivos que necessitam de modificações. Identificamos trechos cuja redação é subjetiva, vaga ou imprecisa, tornando alguns dos critérios apontados para a designação de relevância problemáticos quando analisados sob o enfoque do grupo dos morcegos. Sugerimos que a IN passe por extensa atualização, com alterações de redação, exclusão de alguns critérios (e.g., espécies com função ecológica importante; troglóxenos obrigatório) e inclusão de outros (e.g., presença de fêmeas grávidas e filhotes).
- Cavernas do Brasil: um tesouro subterrâneo a ser descoberto, mas já ameaçado(2021-07-17) Escobar, Herton; Magalhães, Lívia; Menin, DanielPaís tem mais de 20 mil cavernas, com formações incríveis e centenas de espécies ainda não descritas pela ciência. Mudanças na legislação ambiental preocupam pesquisadores
- Explorador de cavernas é resgatado após pedra se soltar e atingi-lo(2021-07-27) Silva, CristianeEspeleólogo sofreu fratura exposta na perna direita e foi hospitalizado; acidente aconteceu no Parque Nacional Cavernas do Peruaçu, no Norte de Minas
- Pesquisa de genoma: Núcleo de Neandertal da poeira da caverna(2021-04-17) Bruno, Ricardo
- Live aborda sobre a Sociedade Brasileira de Espeleologia nesta terça-feira(2021-04-13) Silva, Ketlen daEsta é a segunda transmissão do projeto "Aprendendo com os Guias de Turismo de Bonito" e se inicia a partir das 19h30 até as 21h00.