Base de dados : LILACS
Pesquisa : G16.500.275.157.812 [Categoria DeCS]
Referências encontradas : 161 [refinar]
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Id: biblio-1048687
Autor: Nascimento, Velber Xavier; Barros, Alexandre Bomfim; Azevedo, Joaquim Alexandre Moreira; Miranda, Paulo Rogério Barbosa; Costa, João Gomes da.
Título: Bioavailability of heavy metals in mangrove soil in Alagoas, Brazil / Biodisponibilidade de metais pesados em solo de mangue em Alagoas, Brasil
Fonte: Biosci. j. (Online);35(3):818-825, may./jun. 2019. ilus, tab, graf.
Idioma: en.
Resumo: The mangrove forest is an important transitional ecosystem consisted of terrestrial and marine environment located in tropical and subtropical regions with average temperatures above 20 °C. In Alagoas, the mangrove forests are found on the entire coastline from Maragogi to Piaçabuçu. In the last 20 years, due to the pollution of water resources, studies of coastal aquatic ecosystems have been developed. The objective of this study was to analyze the physicochemical properties and determine the levels of heavy metals in mangrove sediments of the Mundaú-Manguaba estuary lagoon complex (MMELC) and Meirim River in Alagoas. Zinc, copper, lead, cadmium and chromium were chosen due to their relationship with sewer, agricultural, and industrial wastes. 22 soil samples were collected in the MMELC and in the Meirim River. The samples were submitted to soil routine analyses of Embrapa. The heavy metals were extracted by the Mehlich-1 method and analyzed by atomic absorption spectrometry. The mean concentrations of these metals in thesediment samples followed the order Mn > Zn >Pb > Cr> Cu >Cd in MMELC and Zn > Mn >Pb > Cr> Cu >Cd in Meirim River. All proposed heavy metals were found in sediments, however, the cadmium levels were above the normal levels proposed by Environment National Council (CONAMA) and Canadian Council of Ministers of the Environment. The study shows that the analysis of sediment can contribute to environmental monitoring actions and development of public policies aimed to controlling the sustainable use of natural resources of the studied areas.

O manguezal é um importante ecossistema de transição entre o ambiente marinho e terrestre, localizado em regiões tropicais e subtropicais com temperaturas médias acima de 20°C. Em Alagoas podemos encontrar florestas de mangue em praticamente todo o litoral desde Maragogi até Piaçabuçu. Nosúltimos 20 anos, a poluição dos recursos hídricos tem levado ao estudo dos ecossistemas aquáticos costeiros, que são importantes para preservação e equilíbrio da vida. O objetivo deste trabalho foi analisar as propriedades físico-químicas e determinar os teores ambientalmente disponíveis de metais nos sedimentos do mangue existente na foz CELMM (e do rio Meirim em Alagoas. Foram escolhidos os metais zinco, cobre, chumbo, cádmio e crômio por estarem ligados aos despejos de esgotos, projetos agropecuários, e fontes industriais. Foram coletadas 22 amostras de solo nos estuários do CELMM e do rio Meirim. As amostras foram submetidas as análises de rotina para solos da Embrapa. As concentrações médias desses metais nas amostras de sedimento seguiram a ordem Mn > Zn >Pb > Cr> Cu >Cd in CELMM e Zn > Mn >Pb > Cr> Cu >Cd no Rio Meirim. Os metais foram extraídos pelo método Mehlich-1 e analisados por meio de espectrometria de absorção atômica. Foram encontrados nos sedimentos todos os metais propostos na pesquisa com destaque para os teores de cádmio detectados em valores absolutos acima de valores considerados normais pelo Conselho Nacional doMeio Ambiente e pelo Canadian Council of Ministers of the Environment em alguns pontos do estuário do rio Meirim. O estudo mostra que a análise dos sedimentos pode, portanto, contribuir para ações de monitoramento ambiental, subsidiando a implantação e desenvolvimento de políticas públicas que visem controlar o usoracional e sustentável dos recursos naturais das áreas do estudas.
Responsável: BR396.1 - Biblioteca Central


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Id: biblio-964163
Autor: Degen de Arrúa, Rosa; González Salema, G; Céspedes de Zárate, Claudia; Gonzalez, Yenny; Vogt, Cristhian; Delmás de Rojas, Gloria.
Título: Flora y vegetación de la compañía Pikysyry, Ca´acupe, Departamento de Cordillera, Paraguay / Flora and vegetation of the company Pikysyry, Ca'acupe, Department of Cordillera, Paraguay
Fonte: Rojasiana;8(2):65-80, 2009.
Idioma: es.
Responsável: PY37.1 - Biblioteca


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Id: biblio-915664
Autor: Pirondo, Analia; Michlig, Andrea; Martín, Sandra G; Keller, Héctor A.
Título: Constitution and characteristics of the Ibereño herbolarium: a case study within Iberá wetlands (Corrientes, Argentina) / Constitución y características de la herbolaria ibereña: estudio de caso etnobotánico en los humedales del Iberá (Corrientes, Argentina)
Fonte: Bol. latinoam. Caribe plantas med. aromát;17(4):394-413, jul. 2018. mapas, tab, ilus.
Idioma: en.
Projeto: Consejo Nacional de Investigaciones Científicas y Técnicas; . Myndel Botanica Foundation; . Secretaría General de Ciencia y Técnica. PIP 112-201101- 01043; PI N°15-A002.
Resumo: This work is based in the investigation about the persistence of the use of medicinal plants in the communities inhabiting the wetlands within Iberá Natural Reserve. From the participant observation and semi-structured interviews, together with the collection of reference plants, the use of 90 medicinal plants to treat 171 ailments, distributed in 12 body systems was recorded. In addition, the informant consensus factor was also calculated and a correspondence analysis was made. It was concluded that the use and knowledge associated to medicinal plants remains active, depending mostly of the native species. For this reason, the maintenance and access to the native flora by ancestral communities is suggested, to conserve the biological and cultural diversity of the Iberá Natural Reserve.

El presente trabajo se basó en la indagación acerca de la persistencia del uso de las plantas medicinales por parte de comunidades que habitan los humedales circunscritos dentro de la Reserva Natural Iberá. A partir de la observación participante y de entrevistas semi- estructuradas, junto a la colecta de los vegetales testigo, se registró el uso de 90 plantas medicinales para tratar 171 afecciones, distribuidas en 12 sistemas corporales. Además, se calculó el indice de uso del consenso de informantes y se realizó un análisis de correspondencias. Se concluyó que el uso y los saberes vinculados a las plantas medicinales se mantienen activos, dependiendo en mayor medida de las especies nativas. Por este motivo, se sugiere mantener el acceso hacia la flora nativa por parte de las comunidades ancestrales con el fin de conservar la diversidad biológica y cultural presentes en la Reserva Natural Iberá.
Responsável: CL1.1 - Biblioteca Central


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Texto completo SciELO Brasil
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Id: biblio-889240
Autor: Ser, Hooi-Leng; Tan, Wen-Si; Mutalib, Nurul-Syakima Ab; Yin, Wai-Fong; Chan, Kok-Gan; Goh, Bey-Hing; Lee, Learn-Han.
Título: Genome sequence of Streptomyces gilvigriseus MUSC 26T isolated from mangrove forest
Fonte: Braz. j. microbiol;49(2):207-209, Apr.-June 2018. tab.
Idioma: en.
Projeto: PVC Award Grant; . Biotek Abadi; . MOSTI eScience funds; . UM-MOHE HIR Nature Microbiome.
Resumo: Abstract Streptomycetes remain as one of the important sources for bioactive products. Isolated from the mangrove forest, Streptomyces gilvigriseus MUSC 26T was previously characterised as a novel streptomycete. The high quality draft genome of MUSC 26T contained 5,213,277 bp with G + C content of 73.0%. Through genome mining, several gene clusters associated with secondary metabolites production were revealed in the genome of MUSC 26T. These findings call for further investigations into the potential exploitation of the strain for production of pharmaceutically important compounds.
Responsável: BR1.1 - BIREME


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Texto completo SciELO Brasil
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Id: biblio-889214
Autor: Rigonato, Janaina; Kent, Angela D; Gumiere, Thiago; Branco, Luiz Henrique Zanini; Andreote, Fernando Dini; Fiore, Marli Fátima.
Título: Temporal assessment of microbial communities in soils of two contrasting mangroves
Fonte: Braz. j. microbiol;49(1):87-96, Jan.-Mar. 2018. tab, graf.
Idioma: en.
Projeto: FAPESP; . CNPq.
Resumo: ABSTRACT Variations in microbial communities promoted by alterations in environmental conditions are reflected in similarities/differences both at taxonomic and functional levels. Here we used a natural gradient within mangroves from seashore to upland, to contrast the natural variability in bacteria, cyanobacteria and diazotroph assemblages in a pristine area compared to an oil polluted area along a timespan of three years, based on ARISA (bacteria and cyanobacteria) and nifH T-RFLP (diazotrophs) fingerprinting. The data presented herein indicated that changes in all the communities evaluated were mainly driven by the temporal effect in the contaminated area, while local effects were dominant on the pristine mangrove. A positive correlation of community structure between diazotrophs and cyanobacteria was observed, suggesting the functional importance of this phylum as nitrogen fixers in mangroves soils. Different ecological patterns explained the microbial behavior in the pristine and polluted mangroves. Stochastic models in the pristine mangrove indicate that there is not a specific environmental factor that determines the bacterial distribution, while cyanobacteria and diazotrophs better fitted in deterministic model in the same area. For the contaminated mangrove site, deterministic models better represented the variations in the communities, suggesting that the presence of oil might change the microbial ecological structures over time. Mangroves represent a unique environment threatened by global change, and this study contributed to the knowledge of the microbial distribution in such areas and its response on persistent contamination historic events.
Responsável: BR1.1 - BIREME


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Melo, Itamar Soares de
Azevedo, Joäo Lucio de
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Id: biblio-889203
Autor: Castro, Renata Assis; Dourado, Manuella Nóbrega; Almeida, Jaqueline Raquel de; Lacava, Paulo Teixeira; Nave, André; Melo, Itamar Soares de; Azevedo, João Lucio de; Quecine, Maria Carolina.
Título: Mangrove endophyte promotes reforestation tree (Acacia polyphylla) growth
Fonte: Braz. j. microbiol;49(1):59-66, Jan.-Mar. 2018. tab, graf.
Idioma: en.
Projeto: FAPESP; . CNPq.
Resumo: ABSTRACT Mangroves are ecosystems located in the transition zone between land and sea that serve as a potential source of biotechnological resources. Brazil's extensive coast contains one of the largest mangrove forests in the world (encompassing an area of 25,000 km2 along all the coast). Endophytic bacteria were isolated from the following three plant species: Rhizophora mangle, Laguncularia racemosa and Avicennia nitida. A large number of these isolates, 115 in total, were evaluated for their ability to fix nitrogen and solubilize phosphorous. Bacteria that tested positive for both of these tests were examined further to determine their level of indole acetic acid production. Two strains with high indole acetic acid production were selected for use as inoculants for reforestation trees, and then the growth of the plants was evaluated under field conditions. The bacterium Pseudomonas fluorescens (strain MCR1.10) had a low phosphorus solubilization index, while this index was higher in the other strain used, Enterobacter sp. (strain MCR1.48). We used the reforestation tree Acacia polyphylla. The results indicate that inoculation with the MCR1.48 endophyte increases Acacia polyphylla shoot dry mass, demonstrating that this strain effectively promotes the plant's growth and fitness, which can be used in the seedling production of this tree. Therefore, we successfully screened the biotechnological potential of endophyte isolates from mangrove, with a focus on plant growth promotion, and selected a strain able to provide limited nutrients and hormones for in plant growth.
Responsável: BR1.1 - BIREME


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Id: biblio-964237
Autor: Mereles H, Fátima Mereles.
Título: La diversidad, los usos y la conservación de las especies vegetales en los humedales del Paraguay / Diversity, uses and conservation of plant species in the wetlands of Paraguay
Fonte: Rojasiana;7(2):171-185, 2006.
Idioma: es.
Responsável: PY37.1 - Biblioteca


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Id: biblio-965924
Autor: Céspedes, Gloria; Mereles, Fátima.
Título: Estudio de la vegetación y la flora en el área de Aguara Ñu, reserva de la biosfera del bosque Mbaracayú, Paraguay Oriental I / Study of vegetation and flora in the Aguara Ñu area, Mbaracayú forest biosphere reserve, East Paraguay I
Fonte: Rojasiana;7(2):153-164, 2006.
Idioma: es.
Responsável: PY37.1 - Biblioteca


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Id: biblio-964662
Autor: Basualdo, Isabel; Soria, Nélida; Degen, Rosa; Ortiz, Mirtha; Zardini, Elsa.
Título: Catálogo de la flora vascular de Tavai, Dpto. Caazapa, Paraguay / Catálogo de la flora vascular de Tavai, Dpto.Caazapa, Paraguay
Fonte: Rojasiana;7(1):27-99, 2005.
Idioma: es.
Responsável: PY37.1 - Biblioteca


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Id: biblio-964144
Autor: Soria, Nélida; Degen, Rosa; Basualdo, Isabel; Ortiz, Mirtha; Zardini, Elsa.
Título: Catálogo de la flora vascular de Cordillera de Ybyturuzú Dpto. Guaira, Paraguay / Catalog of the vascular flora of Cordillera de Ybyturuzú Dpto. Guaira, Paraguay
Fonte: Rojasiana;7(2):117-152, 2006.
Idioma: es.
Responsável: PY37.1 - Biblioteca



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