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[ABSTRACT]. Objectives. To describe the development, implementation, and results of a training course designed to equip health professionals from the Pan American Health Organization region with the knowledge and tools needed to adapt health systems to current climate realities. Methods. The Pan American climate resilient health systems course was a 9-week live-virtual course in March– April 2023, which was delivered through Zoom and offered in English, Spanish, and French. All lectures were delivered by local and regional climate and health experts. The curricular foundation of this initiative was the Global Consortium on Climate and Health Education core competencies for health professionals. Participants completed pre- and post-course surveys. Results. A total of 1212 participants attended at least one of the nine sessions and 489 (from 66 countries) attended at least six sessions. Of these, 291 participants completed both the pre- and post-course surveys which were used in the analysis. Longitudinal survey results suggested an improvement in participants’ climate and health communication, an increased frequency of incorporating climate knowledge in professional practice, and improved confidence in engaging in climate initiatives. At the same time, many participants expressed a need for additional training. Conclusions. The results indicate that live-virtual courses have the potential to empower health professionals to contribute to climate resilience efforts by: increasing their communication skills; changing their professional practice; increasing their ability to lead climate and health activities; and preparing them to assess vulnerability and adaptation in health systems, measure and monitor environmental sustainability, and apply a health equity lens.

[RESUMEN]. Objetivos. Describir la elaboración, la puesta en práctica y los resultados de un curso de capacitación diseñado para dotar a los profesionales de salud de la Región de la Organización Panamericana de la Salud de los conocimientos y las herramientas necesarios para adaptar los sistemas de salud a las realidades climáticas actuales. Métodos. El Curso Panamericano de Resiliencia al Clima para Sistemas de Salud fue un curso virtual impartido a lo largo de nueve semanas, en marzo y abril del 2023. Se dictó en directo por medio de Zoom y se ofreció en español, francés e inglés. Todas las ponencias corrieron a cargo de expertos locales y regionales en clima y salud. El temario de esta iniciativa se basó en las competencias básicas para profesionales de la salud del Consorcio Global sobre Educación en Clima y Salud. Los participantes respondieron a cuestionarios antes y después del curso. Resultados. Hubo un total de 1212 participantes que asistieron al menos a una de las nueve sesiones y 489 (de 66 países) que asistieron a un mínimo de seis. De ellos, 291 respondieron a los cuestionarios previos y posteriores al curso que se usaron para el análisis. Los resultados longitudinales del cuestionario indicaron una mejora en la comunicación de los participantes sobre el clima y la salud, una mayor frecuencia de incorporación de los conocimientos sobre el clima en la práctica profesional y una mayor confianza a la hora de participar en iniciativas relacionadas con el clima. Asimismo, muchos participantes expresaron la necesidad de una mayor capacitación. Conclusiones. Los resultados indican que los cursos virtuales en directo brindan la posibilidad de facultar a los profesionales de la salud para que contribuyan a los esfuerzos de resiliencia frente al clima mediante: la mejora de sus competencias en materia de comunicación; la introducción de cambios en el ejercicio de su profesión; la mejora de su capacidad para dirigir actividades relacionadas con el clima y la salud; y la preparación para evaluar la vulnerabilidad y la adaptación de los sistemas de salud, medir y dar seguimiento a la sostenibilidad medioambiental y aplicar una perspectiva de equidad en la salud.

[RESUMO]. Objetivos. Descrever a elaboração, a implementação e os resultados de um curso de capacitação para fornecer aos profissionais de saúde na região da Organização Pan-Americana da Saúde os conhecimentos e as ferramentas necessários para adaptar os sistemas de saúde às realidades atuais do clima. Métodos. O curso sobre sistemas de saúde pan-americanos resilientes ao clima, com nove semanas de duração, foi oferecido em formato on-line ao vivo (via Zoom). O curso foi realizado em inglês, espanhol e francês entre março e abril de 2023. As aulas foram ministradas por especialistas locais e regionais em clima e saúde. As competências básicas para profissionais de saúde do Consórcio Global de Educação em Clima e Saúde serviram de base curricular para esta iniciativa. Os participantes preencheram uma pré-avaliação e uma pós-avaliação do curso. Resultados. Das pessoas que participaram do curso, 1212 assistiram a pelo menos uma das nove aulas, e 489 (em 66 países) assistiram a pelo menos seis aulas. Dessas, 291 fizeram a pré-avaliação e a pós-avaliação do curso, e os dados coletados foram usados na análise. Os resultados da pesquisa longitudinal indicam uma melhoria por parte dos participantes na comunicação sobre clima e saúde, maior frequência de incorporação dos conhecimentos sobre o clima na prática profissional e maior segurança dos profissionais para participar em iniciativas sobre clima. Muitos participantes também informaram que precisavam de mais capacitação. Conclusões. Os resultados desta análise indicam que cursos on-line ao vivo podem ajudar a empoderar os profissionais de saúde para que possam contribuir para os esforços de resiliência ao clima de diversas formas: melhorando suas habilidades de comunicação; transformando sua prática profissional; melhorando sua habilidade de conduzir atividades relacionadas ao clima e à saúde; e preparando-os para avaliar a vulnerabilidade e a adaptação dos sistemas de saúde, aferir e monitorar a sustentabilidade ambiental e utilizar uma perspectiva de equidade em saúde.

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ABSTRACT Objectives. To describe the development, implementation, and results of a training course designed to equip health professionals from the Pan American Health Organization region with the knowledge and tools needed to adapt health systems to current climate realities. Methods. The Pan American climate resilient health systems course was a 9-week live-virtual course in March-April 2023, which was delivered through Zoom and offered in English, Spanish, and French. All lectures were delivered by local and regional climate and health experts. The curricular foundation of this initiative was the Global Consortium on Climate and Health Education core competencies for health professionals. Participants completed pre- and post-course surveys. Results. A total of 1212 participants attended at least one of the nine sessions and 489 (from 66 countries) attended at least six sessions. Of these, 291 participants completed both the pre- and post-course surveys which were used in the analysis. Longitudinal survey results suggested an improvement in participants' climate and health communication, an increased frequency of incorporating climate knowledge in professional practice, and improved confidence in engaging in climate initiatives. At the same time, many participants expressed a need for additional training. Conclusions. The results indicate that live-virtual courses have the potential to empower health professionals to contribute to climate resilience efforts by: increasing their communication skills; changing their professional practice; increasing their ability to lead climate and health activities; and preparing them to assess vulnerability and adaptation in health systems, measure and monitor environmental sustainability, and apply a health equity lens.

RESUMEN Objetivos. Describir la elaboración, la puesta en práctica y los resultados de un curso de capacitación diseñado para dotar a los profesionales de salud de la Región de la Organización Panamericana de la Salud de los conocimientos y las herramientas necesarios para adaptar los sistemas de salud a las realidades climáticas actuales. Métodos. El Curso Panamericano de Resiliencia al Clima para Sistemas de Salud fue un curso virtual impartido a lo largo de nueve semanas, en marzo y abril del 2023. Se dictó en directo por medio de Zoom y se ofreció en español, francés e inglés. Todas las ponencias corrieron a cargo de expertos locales y regionales en clima y salud. El temario de esta iniciativa se basó en las competencias básicas para profesionales de la salud del Consorcio Global sobre Educación en Clima y Salud. Los participantes respondieron a cuestionarios antes y después del curso. Resultados. Hubo un total de 1212 participantes que asistieron al menos a una de las nueve sesiones y 489 (de 66 países) que asistieron a un mínimo de seis. De ellos, 291 respondieron a los cuestionarios previos y posteriores al curso que se usaron para el análisis. Los resultados longitudinales del cuestionario indicaron una mejora en la comunicación de los participantes sobre el clima y la salud, una mayor frecuencia de incorporación de los conocimientos sobre el clima en la práctica profesional y una mayor confianza a la hora de participar en iniciativas relacionadas con el clima. Asimismo, muchos participantes expresaron la necesidad de una mayor capacitación. Conclusiones. Los resultados indican que los cursos virtuales en directo brindan la posibilidad de facultar a los profesionales de la salud para que contribuyan a los esfuerzos de resiliencia frente al clima mediante: la mejora de sus competencias en materia de comunicación; la introducción de cambios en el ejercicio de su profesión; la mejora de su capacidad para dirigir actividades relacionadas con el clima y la salud; y la preparación para evaluar la vulnerabilidad y la adaptación de los sistemas de salud, medir y dar seguimiento a la sostenibilidad medioambiental y aplicar una perspectiva de equidad en la salud.

RESUMO Objetivos. Descrever a elaboração, a implementação e os resultados de um curso de capacitação para fornecer aos profissionais de saúde na região da Organização Pan-Americana da Saúde os conhecimentos e as ferramentas necessários para adaptar os sistemas de saúde às realidades atuais do clima. Métodos. O curso sobre sistemas de saúde pan-americanos resilientes ao clima, com nove semanas de duração, foi oferecido em formato on-line ao vivo (via Zoom). O curso foi realizado em inglês, espanhol e francês entre março e abril de 2023. As aulas foram ministradas por especialistas locais e regionais em clima e saúde. As competências básicas para profissionais de saúde do Consórcio Global de Educação em Clima e Saúde serviram de base curricular para esta iniciativa. Os participantes preencheram uma pré-avaliação e uma pós-avaliação do curso. Resultados. Das pessoas que participaram do curso, 1212 assistiram a pelo menos uma das nove aulas, e 489 (em 66 países) assistiram a pelo menos seis aulas. Dessas, 291 fizeram a pré-avaliação e a pós-avaliação do curso, e os dados coletados foram usados na análise. Os resultados da pesquisa longitudinal indicam uma melhoria por parte dos participantes na comunicação sobre clima e saúde, maior frequência de incorporação dos conhecimentos sobre o clima na prática profissional e maior segurança dos profissionais para participar em iniciativas sobre clima. Muitos participantes também informaram que precisavam de mais capacitação. Conclusões. Os resultados desta análise indicam que cursos on-line ao vivo podem ajudar a empoderar os profissionais de saúde para que possam contribuir para os esforços de resiliência ao clima de diversas formas: melhorando suas habilidades de comunicação; transformando sua prática profissional; melhorando sua habilidade de conduzir atividades relacionadas ao clima e à saúde; e preparando-os para avaliar a vulnerabilidade e a adaptação dos sistemas de saúde, aferir e monitorar a sustentabilidade ambiental e utilizar uma perspectiva de equidade em saúde.

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This paper consists of the evaluation in regards to the ecotoxicological effectiveness of a treatment applied to a coal mining waste. The treatment consisted of separating the particles based on gravimetric concentration in spirals, generating three fractions: heavy, intermediate, and light, with high, moderate, and low pyrite content, respectively. The intermediate fraction represents the larger disposal volume of the waste on soils. To evaluate the effectiveness of the treatment, metal determination and bioassays Eisenia andrei, Folsomia candida, Lactuca sativa, Daphnia similis, and Raphidocelis subcapitata were applied to the intermediary fraction. To evaluate the toxicity to aquatic organisms, elutriates were generated from the unprocessed waste and the intermediate fraction. The intermediate fraction showed a decrease of metal concentrations compared to the untreated waste. Metal concentrations in the intermediate fraction were below the Brazilian thresholds for soil quality. Avoidance bioassay with E. andrei and germination tests of L. sativa showed no significant effects. The bioassay with F. candida indicated a significant reduction in reproduction at the highest doses used (24% and 50%). Bioassays with D. similis and R. subcapitata revealed a reduction in toxicity of the intermediate fraction compared to the untreated waste. However, the toxicity levels of the intermediate fraction to aquatic organisms still require attention, especially in regards to pH that played a crucial role in the toxicity. Finally, the results suggest that the treatment performed on the coal waste was efficient, even though significant toxicity have still been detected in the treated waste and additional steps are still required for adequate final disposal.

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Triclocarban (TCC) is an antibacterial agent found in pharmaceuticals and personal care products (PPCP). It is potentially bioaccumulative and an endocrine disruptor, being classified as a contaminant of emerging concern (CEC). In normal uses, approximately 96% of the used TCC can be washed down the drain going into the sewer system and eventually enter in the aquatic environment. UV photolysis can be used to photodegrade TCC and ecotoxicity assays could indicate the photodegradation efficiency, since the enormous structural diversity of photoproducts and their low concentrations do not always allow to identify and quantify them. In this work, the TCC was efficiently degraded by UVC direct photolysis and the ecotoxicity of the UV-treated mixtures was investigated. Bioassays indicates that Daphnia similis (48 h EC50 = 0.044 µM) was more sensitive to TCC than Pseudokirchneriella subcapitata (72 h IC50 = 1.01 µM). TCC and its photoproducts caused significant effects on Eisenia andrei biochemical responses (catalase and glutathione-S-transferase); 48 h was a critical exposure time, since GST reached the highest activity values. UVC reduced the TCC toxic effect after 120 min. Furthermore, TCC was photodegraded in domestic wastewater which was simultaneously disinfected for total coliform bacterial (TCB) (360 min) and Escherichia coli (60 min). Graphical abstract TCC degradation and ecotoxicological assessment.

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O artigo examina a presença da saúde como Ob-jetivo do Desenvolvimento Sustentável (ODS) na Agenda do Desenvolvimento pós-2015, no processo transcorrido entre 2012 e 2014. Presente desde a Cúpula do Milênio e os ODM (2000), a saúde também aparece nos documentos que tratam da Agenda pós-2015, da Rio+20 ao documento do Grupo de Trabalho Aberto das Nações Unidas (OWG), submetido à Assembleia Geral das Nações Unidas (AGNU) 2014-2015, passando pela Con-sulta Global sobre Saúde e o Painel de Alto Nível de Pessoas Eminentes. Os autores concluem pela uniformidade com que a saúde aparece nestes documentos. Identificam a amplitude do enunciado do ODS Saúde, mas alertam para o fracionamento e redução conceitual de suas metas. Propõem mudanças nas mesmas, acrescentando a questão dos determinantes sociais da saúde e metas em saúde pública, ausentes na proposta do OWG. Alertam para a necessidade de reformas na governança global e nacional, bem como para a participação da sociedade civil e da influência que pode exercer sobre a diplomacia, responsável pelo pacto que será firmado na AGNU de 2015.

This paper evaluates health as a Sustainable Development Goal (SDG) in the context of the Post-2015 Development Agenda, between 2012 and 2014. Health was part of the debate since the Millennium Summit and the MDGs (2000), and it also appears in the documents discussing the Post-2015 Agenda, from the Rio+20 to the Open Working Group (OWG), whose report was submitted to the General Assembly of the United Nations (UNGA) 2014-2015, and in the Global Consultation on Health and the High-Level Panel of Eminent Persons reports. The Authors concluded that the treatment of health in all these documents is uniform. They point out that the scope of the health-related SDG is very comprehensive, but its targets are conceptually fragmented and reduced. They advocate their change as to include not only the idea of social determinants of health, but also targets in the field of public health, which were not included in the proposal of the OWG. They also warn that the global and national governance systems need to be reformed and advocate more participation of the civil society, which can influence diplomacy, which, in turn, will be responsible for the agreement signed at the UNGA in 2015.

El artículo examina la presencia de la salud como Objetivo de Desarrollo Sostenible (ODS) en la Agenda de Desarrollo post 2015, en el proceso transcurrido entre 2012 y 2014. Presente desde la Cumbre del Milenio y los ODM (2000), la salud también aparece en los documentos que tratan sobre la Agenda post 2015, desde Rio+20 hasta el documento del Grupo de Trabajo Abierto de Naciones Unidas (OWG), sometido a la Asamblea General de Naciones Unidas (AGNU) 2014-2015, pasando por la Consulta Global sobre Salud y el Grupo de Alto Nivel de Personas Eminentes. Los Autores concuerdan en la uniformidad con que la salud aparece en estos documentos. Identifican la amplitud del enunciado del ODS Salud, pero advierten sobre el fraccionamiento y la reducción conceptual de sus metas. Proponen cambios en las mismas, acrecentando la cuestión de los determinantes sociales de la salud y metas en salud pública, ausentes en la propuesta del OWG. Alertan sobre la necesidad tanto de reformas en la gobernanza global y nacional, como de la participación de la sociedad civil y de la influencia que puede ejercer sobre la diplomacia, responsable del pacto que será firmado en la AGNU de 2015.

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This paper evaluates health as a Sustainable Development Goal (SDG) in the context of the Post-2015 Development Agenda, between 2012 and 2014. Health was part of the debate since the Millennium Summit and the MDGs (2000), and it also appears in the documents discussing the Post-2015 Agenda, from the Rio+20 to the Open Working Group (OWG), whose report was submitted to the General Assembly of the United Nations (UNGA) 2014-2015, and in the Global Consultation on Health and the High-Level Panel of Eminent Persons reports. The Authors concluded that the treatment of health in all these documents is uniform. They point out that the scope of the health-related SDG is very comprehensive, but its targets are conceptually fragmented and reduced. They advocate their change as to include not only the idea of social determinants of health, but also targets in the field of public health, which were not included in the proposal of the OWG. They also warn that the global and national governance systems need to be reformed and advocate more participation of the civil society, which can influence diplomacy, which, in turn, will be responsible for the agreement signed at the UNGA in 2015.

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In a scenario where ecosystemic services are being eroded and there is high social inequity, a new model of development is necessary, namely one capable of promoting social development with a reduction of its ecological footprint. The 'Green Economy' model is one of the proposed models. This paper seeks to analyze the environmental, social and individual impacts on human health in the context of a 'brown economy', and discusses the contributions of a green economy on the promotion of equity and health. The assumption is that economic development and environmental sustainability are not incompatible and both contribute to the eradication of poverty. The transition to a sustainable economy depends on political decisions, and transcends technological developments. Above all, it should instigate new models of production, consumption and social organization, which promote socio-environmental justice, encouraging social participation and democratic forms of governance to define a solid agenda for the implementation of sustainable development and mechanisms to implement them at all levels.

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The United Nations Conference on Sustainable Development, Rio+20, will address the challenges for sustainable development (SD), 'green economy and poverty eradication' and the 'institutional structure of sustainable development'. Therefore it will address the governance needed to achieve such goals. This paper discusses the structure of global, regional and national governance of and for health and environment in the context of SD. Among other global actions, the Millenium Development Goals were a significant recent political effort, but despite its advances, it fails when ignores the structural causes of production and consumption patterns and the unequal distribution of power, which are responsible for inequities and impede true development. To achieve SD, proposals must avoid reductionism, advancing conceptually and methodologically to face the challenges of the socio-environmental determinants of health through intersectoral action, including social participation and all levels of government. It is paramount to continue the implementation of Agenda 21, to meet the MDGs and to create 'Sustainable Development Goals'. Regarding the health field, Rio+20 Summit must reassure the connection between health and sustainability - as a part of the Social pillar of sustainable development - inspiring politics and actions in multiple levels.

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Em um cenário onde os serviços ecossistêmicos vão sendo perdidos e há graves iniquidades sociais é necessário um novo modelo de crescimento capaz de promover o desenvolvimento social com a redução da pegada ecológica. A 'economia verde' é um dos modelos propostos. Este trabalho analisa os impactos ambientais, sociais e individuais da economia marrom na saúde humana e aborda as contribuições da economia verde para a promoção da equidade e saúde. Assume que o desenvolvimento econômico e a sustentabilidade ambiental não são incompatíveis e contribuem para o combate à pobreza. A transição para uma economia sustentável depende de decisões políticas e vai além do desenvolvimento de tecnologias, devendo implantar um novo modo de produção, consumo e organização social que promova a justiça socioambiental, incentivando a participação social e as formas democráticas de governança para definir uma agenda concreta de implementação de objetivos para o desenvolvimento sustentável e de mecanismos capazes de implementá-los em todos os níveis.

In a scenario where ecosystemic services are being eroded and there is high social inequity, a new model of development is necessary, namely one capable of promoting social development with a reduction of its ecological footprint. The 'Green Economy' model is one of the proposed models. This paper seeks to analyze the environmental, social and individual impacts on human health in the context of a 'brown economy', and discusses the contributions of a green economy on the promotion of equity and health. The assumption is that economic development and environmental sustainability are not incompatible and both contribute to the eradication of poverty. The transition to a sustainable economy depends on political decisions, and transcends technological developments. Above all, it should instigate new models of production, consumption and social organization, which promote socio-environmental justice, encouraging social participation and democratic forms of governance to define a solid agenda for the implementation of sustainable development and mechanisms to implement them at all levels.

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A Conferência da ONU sobre Desenvolvimento Sustentável, Rio+20, propõe a discussão dos desafios do desenvolvimento sustentável (DS) e dos temas 'economia verde e da erradicação da pobreza' e 'estrutura institucional do desenvolvimento sustentável' e, por conseguinte, sua governança. Este artigo visa discutir a atual configuração da governança da e para a saúde e ambiente no contexto do DS. Os Objetivos do Milênio foram significativo esforço político recente, mas apesar dos progressos, falham ao omitir as causas estruturais dos modos de produção e consumo e da distribuição desigual de poder que são as produtoras das iniquidades e impedem o verdadeiro desenvolvimento. Propostas para o DS devem superar reducionismos e avançar conceitual e metodologicamente para o enfrentamento dos determinantes socioambientais da saúde por meio de ações intersetoriais, incluindo a participação social, e em todas as esferas de governo. É fundamental o prosseguimento da implantação dos princípios da Agenda 21, o cumprimento dos ODM e a criação dos Objetivos do Desenvolvimento Sustentável. No campo da saúde, espera-se que a Rio+20 reafirme as articulações da saúde com a sustentabilidade, como parte do pilar social do desenvolvimento sustentável, inspirando a definição de políticas e ações nos planos global, nacional e local.

The United Nations Conference on Sustainable Development, Rio+20, will address the challenges for sustainable development (SD), 'green economy and poverty eradication' and the 'institutional structure of sustainable development'. Therefore it will address the governance needed to achieve such goals. This paper discusses the structure of global, regional and national governance of and for health and environment in the context of SD. Among other global actions, the Millenium Development Goals were a significant recent political effort, but despite its advances, it fails when ignores the structural causes of production and consumption patterns and the unequal distribution of power, which are responsible for inequities and impede true development. To achieve SD, proposals must avoid reductionism, advancing conceptually and methodologically to face the challenges of the socio-environmental determinants of health through intersectoral action, including social participation and all levels of government. It is paramount to continue the implementation of Agenda 21, to meet the MDGs and to create 'Sustainable Development Goals'. Regarding the health field, Rio+20 Summit must reassure the connection between health and sustainability - as a part of the Social pillar of sustainable development - inspiring politics and actions in multiple levels.

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RESUMO Esse ensaio teve por objetivo a discussão da saúde como elemento intrínseco do processo de sustentabilidade pela ação setorial e na sua relação com os condicionantes econômicos, sociais e ambientais. Apresenta um debate pautado na temática da Rio+20, no sentido de apontar caminhos de consolidação da relação da saúde com o desenvolvimento sustentável, dialogando com a formulação do conceito de economia verde e na construção de processos de governança. Apresenta a discussão do território como espaço de organização social em que a saúde interage com os processos de desenvolvimento, das múltiplas dimensões que compõem a governança da e para a saúde, do ambiente e para o desenvolvimento sustentável.

ABSTRACT This paper discusses the importance of health as an intrinsic element in the sustainability process through the sectoral action and through its relation with the economic, social and environmental conditions. It proposes a debate guided by the Rio+20 Conference thematic in the sense of pointing out ways to consolidate the relationship between health and sustainable development, in a dialogue with the concept of green economy and towards the construction of governance processes. It presents the discussion of territory as the space of social organization in which health interacts with the development processes, the multiple dimensions, which compose governance of and for health, of the environment and for the sustainable development.

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RESUMO Esse ensaio teve por objetivo a discussão da saúde como elemento intrínseco do processo de sustentabilidade pela ação setorial e na sua relação com os condicionantes econômicos, sociais e ambientais. Apresenta um debate pautado na temática da Rio+20, no sentido de apontar caminhos de consolidação da relação da saúde com o desenvolvimento sustentável, dialogando com a formulação do conceito de economia verde e na construção de processos de governança. Apresenta a discussão do território como espaço de organização social em que a saúde interage com os processos de desenvolvimento, das múltiplas dimensões que compõem a governança da e para a saúde, do ambiente e para o desenvolvimento sustentável.

ABSTRACT This paper discusses the importance of health as an intrinsic element in the sustainability process through the sectoral action and through its relation with the economic, social and environmental conditions. It proposes a debate guided by the Rio+20 Conference thematic in the sense of pointing out ways to consolidate the relationship between health and sustainable development, in a dialogue with the concept of green economy and towards the construction of governance processes. It presents the discussion of territory as the space of social organization in which health interacts with the development processes, the multiple dimensions, which compose governance of and for health, of the environment and for the sustainable development.

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An image analysis biomonitoring system was used to evaluate sublethal effects of pH on the mean swimming velocity of zebrafish. Responses to stress were tested comparing individual and group responses. Group analysis indicated no effect for all acid pH and for pH 9.0-9.5. Individual analysis indicated behavioral differences for most acid pH and higher than 9.5. Sensitivity to sublethal pH was best assessed when using individual analysis. Zebrafish decreased hyperactivity and increased hypoactivity with more acid or alkaline pH. Individual approach allowed to determine hyperactivity or hypoactivity and the species' thresholds of exposure, which is critical for the management of impairments.

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The aim of this work was to study the degradation and detoxification of three textile azo dyes (Reactive Red 198, Reactive Red 141 and Reactive Blue 214) by mixed fungal cultures from semi-arid region of Brazilian Northeast. Sediment samples of twenty water reservoirs in the surroundings of Serra da Capivara National Park, area of environmental preservation in the caatinga in the State of Piauí, with semi-arid climate, were evaluated in order to select the consortia of fungi capable to degrade and detoxify these dyes. The mixed fungal culture from Caldeirão Escuridão (CE) reservoir was the most efficient in the degradation and detoxification of the dyes tested.

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The co-treatment from Morro do Céu landfill leachate with domestic sewage in the Icaraí STP was monitored with regard to the behavior of toxicity of its inflows and outflow. Leachate not exceeded 1.5% in volume in the plant. The acute ecotoxicological tests showed that, although leachate is far more harmful to D. rerio (LC50 approximately = 4) and D. similis (LC50 approximately = 5) than sewage (LC50 approximately = 62; LC50 approximately = 22), statistically the mixture of leachate with sewage did not result in a more toxic inflow (LC50 approximately = 57; LC50 approximately = 12) for treatment than raw sewage. After treatment, the outflow toxicity (LC50 approximately = 76; LC50 approximately = 16) complied with the environmental laws.

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We evaluated behavioral responses of zebrafish Danio rerio exposed to sublethal concentrations of sodium hypochlorite using an image analysis biomonitoring system (IABS). First, the limits of normal variation in swimming activity of zebrafish were determined by monitoring traveled distance of 40 control fishes using the IABS. An acute toxicity test was performed to determine the LC(50(24 h)) for D. rerio to NaOCl. To evaluate the toxic effects in swimming activity, 32 fishes were exposed to 40%, 30%, 20%, 10% of the LC(50 )and 32 were used as control using the IABS. We considered toxic concentrations where more than 10% intervals of the treated group were below the limits of normal variation and were significantly different from the control group. Two main responses were observed: an escape response (increased swimming activity) at 10% treated group, a gradual decrease in swimming activity from the 20% of the LC(50) on, and an avoidance response at higher concentrations. The response of the 20% treated group were considered as a NOAEL and responses of the 30% and 40% treated groups indicated significant hypoactivity (adverse effect). This behavioral biomonitoring system has proven to be a useful tool to detect sublethal toxicity that could be incorporated in biomonitoring protocols in Brazil.

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