Ecological Risk Assessment
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Nuevo registro de Melocactus peruvianus (Cactaceae) y estado de conservación del género Melocactus en el Ecuador
Abstract The globular cacti are the group of cacti that are most at risk of extinction in Continental Ecuador. Melocactus bellavistensis, is distributed in a dry inter-Andean valley in the province of Loja and is currently listed in the category of Deficient Data (DD) by the IUCN. The other species, M. peruvianus is known only in two confirmed localities in
Rodriguésia. Publicado em: 11/11/2019
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2. ECOLOGICAL RISK ASSESSMENT (ERA) APPLICATION FOR THE EVALUATION OF IMPACTS ON NATURAL AQUATIC ECOSYSTEMS
Resumo A presente pesquisa emprega o método de Avaliação de Risco Ecológico (ARE) para a valoração da probabilidade de ocorrência de efeitos adversos em águas de abastecimento de Bom Repouso (MG), município onde a agricultura causou um avançado grau de degradação de suas nascentes. A metodologia utilizada se baseia na integração de diferentes v
Ambient. soc.. Publicado em: 16/05/2019
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3. Heavy metal concentrations and ecological risk assessment of the suspended sediments of a multi-contaminated Brazilian watershed
ABSTRACT. Metal concentrations in suspended sediments of one of the most polluted rivers in Brazil were measured. Concentrations of Cd, Cr, Cu, Fe, Mn, Ni, Pb, and Zn were determined by inductively coupled plasma while Hg and As were analyzed with hydride generation flow injection atomic absorption spectroscopy. Contamination of As, Cd, Cr, Cu, Fe, Hg, Mn, N
Acta Sci., Agron.. Publicado em: 28/03/2019
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4. Considerations on extinct species of Brazilian flora
AbstractExtinction risk assessments are important tools for plant conservation. However, misinterpretations can lead to negative consequences for survival of species. Inconsistent categorization as extinction, when the species is still extant, constitutes a Romeo error, and annuls all and any mechanism of existing legal protection. But precisely determining
Rodriguésia. Publicado em: 2015-09
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5. Leishmaniasis transmission: distribution and coarse-resolution ecology of two vectors and two parasites in Egypt
Introduction: In past decades, leishmaniasis burden has been low across Egypt; however, changing environment and land use has placed several parts of the country at risk. As a consequence, leishmaniasis has become a particularly difficult health problem, both for local inhabitants and for multinational military personnel. Methods: To evaluate coarse-resol
Rev. Soc. Bras. Med. Trop.. Publicado em: 2014-01
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6. Avaliação de risco ambiental de ambientes aquáticos afetados pelo uso de agrotóxicos
Ecological risk assessment is a process evaluating the likelihood that adverse ecological effects may occur or are occurring as a result of exposure to one or more substances. Relevant information needed to predict risks from pesticides includes their physical chemical properties, mobility in soil, persistence in the environment, and bioaccumulation and toxi
Quím. Nova. Publicado em: 2014
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7. Sustentabilidade ambiental: um estudo com pesquisadores químicos no Brasil
A study evaluating Brazilian chemical researchers understanding of the scope of the terms Environmental Sustainability and Sustainable Development, and their assessment of how to deal with environmental fragility and limits, is reported. Results showed a certain degree of acknowledgement of the need for a more sustainable development, but little agreement on
Quím. Nova. Publicado em: 2013
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8. Análise de risco ecológico para o diagnóstico de impactos ambientais em ecossistemas aquáticos continentais tropicais / Ecological risk assessment for the diagnosis of environmental impacts in tropical freshwater ecosystems
Os estudos de análise de risco ecológico consistem em avaliar as alterações ecológicas ocasionadas pelas diversas atividades antropogênicas a um determinado sistema, tais como aquelas decorrentes da lixiviação de áreas contaminadas, das emissões de efluentes urbanos, industriais e do runoff de áreas agrícolas, entre outras, por meio da integraç�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/03/2012
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9. Metodologia de avaliação de risco ecológico em ambiente aquático a partir de evidências químicas, biológicas e ecotoxicológicas
A contribuição deste trabalho é apresentar uma metodologia de avaliação de risco ecológico do ambiente aquático utilizando-se dados provenientes de programas de monitoramento ambiental. O estudo tem como cenário um trecho do Rio Jacuí, município de São Jerônimo – RS, Brasil, que foi avaliado através da aplicação de um programa de monitoramen
Publicado em: 2011
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10. O ÍNDICE DE SUSTENTABILIDADE AMBIENTAL DO USO DA ÁGUA (ISA) COMO FERRAMENTA DE CONTRIBUIÇÃO ÀS POLITICAS PÚBLICAS DE DESENVOLVIMENTO E CONSERVAÇÃO NA BACIA DO RIO BACANGA, SÃO LUÍS/ MA. / INDEX FOR ENVIRONMENTAL SUSTAINABILITY OF WATER USE (ISA) AS A TOOL FOR CONTRIBUTION TO THE POLICIES PUBLIC DEVELOPMENT AND CONSERVATION IN BACANGA RIVER BASIN, SÃO LUIS / MA.
A hydrographic basin is a complex environmental system, resulting from the interrelations between the physical-natural and socioeconomic subsystems. Its identity as the unifying of environmental processes and human interference is leading to its adoption as a research unit. It allows from the analysis of the physical-chemical, biological and socioeconomic fa
Publicado em: 2010
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11. Análise da interação entre substâncias húmicas e xenobióticos através de estudos ecotoxicológicos: propostas para a geração de tecnologias de detoxificação aquática / Study of humic substances and xenobiotics interaction using ecotoxicological studies: aquatic detoxification technologies purposes
This study focuses the interaction of humic substances and xenonbiotics, throw ecotixicological studies. The main point was quantify and qualify the ecotoxicological responses of several throphic levels of freshwater (algae, zooplankton, fishes and benthic organisms) and soil organisms (higth plants, insects and annelids) analyzing the direct and indirect ef
Publicado em: 2008
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12. Biogeography and evolution of Amazonian triatomines (Heteroptera: Reduviidae): implications for Chagas disease surveillance in humid forest ecoregions
An ecological-evolutionary classification of Amazonian triatomines is proposed based on a revision of their main contemporary biogeographical patterns. Truly Amazonian triatomines include the Rhodniini, the Cavernicolini, and perhaps Eratyrus and some Bolboderini. The tribe Rhodniini comprises two major lineages (pictipes and robustus). The former gave rise
Memórias do Instituto Oswaldo Cruz. Publicado em: 21/09/2007