Ecological Efficiency
Mostrando 1-12 de 101 artigos, teses e dissertações.
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1. Trade-off in plant-ant interactions: seasonal variations
Resumo Este trabalho avaliou o efeito da sazonalidade sobre a interação planta-formiga em uma Floresta Tropical Sazonal Seca, utilizando como modelo ecológico a espécie Ipomoea carnea subs. fistulosa (Convolvulaceae). Realizamos coleta sistemática de formigas, herbívoros e folhas em plantas marcadas, avaliamos a eficiência de captura de herbívoros pe
Braz. J. Biol.. Publicado em: 17/01/2020
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2. Toxicity of leachates from pilot reactors simulating a landfill with different concentrations of AgNP
RESUMO O objetivo deste trabalho foi verificar a toxicidade de lixiviados de reatores piloto (RP) simulando um aterro contendo diferentes concentrações de nanopartículas de prata (AgNP). Testes de toxicidade aguda (48 h) com Daphnia magna foram realizados em lixiviados contendo 50, 150 e 450 mg de AgNP.kg-1, além de um branco para controle. Foram realiza
Eng. Sanit. Ambient.. Publicado em: 20/12/2019
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3. Nitrificação de águas amarelas em leito percolante de areia
RESUMO O esgotamento sanitário ecológico conscientiza a população sobre a importância do reúso da água com maior eficiência e do uso de efluentes de sistemas de tratamento descentralizados. O presente trabalho descreve os resultados da nitrificação de águas amarelas em reator biológico com a utilização de materiais simples, por exemplo, a areia
Eng. Sanit. Ambient.. Publicado em: 26/08/2019
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4. Elevated atmospheric CO2 concentration improves water use efficiency and growth of a widespread Cerrado tree species even under soil water deficit
ABSTRACT Changes in atmospheric CO2 levels are accompanied by ecological interactions involving other environmental factors, such as drought, which can severely alter the water balance of plants, thereby influencing sap flow, gas exchange, and plant growth. The objective of this study was to evaluate the water use economy, leaf gas exchange, and growth of yo
Acta Bot. Bras.. Publicado em: 19/06/2019
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5. Elevated atmospheric CO2 concentration improves water use efficiency and growth of a widespread Cerrado tree species even under soil water deficit
ABSTRACT Changes in atmospheric CO2 levels are accompanied by ecological interactions involving other environmental factors, such as drought, which can severely alter the water balance of plants, thereby influencing sap flow, gas exchange, and plant growth. The objective of this study was to evaluate the water use economy, leaf gas exchange, and growth of yo
Acta Bot. Bras.. Publicado em: 19/06/2019
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6. Optimal Simulation of the Land-Use Structure Based on the Local Ecological Environment: the Case of Huanghua City in Hebei Province, China
ABSTRACT The overuse of land has resulted in a sharp decline in ecological functions, affecting the environment as it relates to the existence and sustainable development of the whole biosphere. This work aims to evaluate the ecological and economic efficiencies of the land-use structure. A simulation model, CLUE-S (Conversion of Land-Use and its Effects at
Rev. Bras. Ciênc. Solo. Publicado em: 15/04/2019
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7. Technical efficiency analysis of marine shrimp farming (Litopenaeus vannamei) in biofloc and conventional systems: A case study in northeastern Brazil
Abstract Shrimp farming has a great ecological, economic, and social importance in northeastern Brazil. Although the conventional farming system is widely used, biofloc technology (BFT) system has been developed to reduce environmental impacts and optimizing the production. Thus,the present study evaluated the technical efficiency of production cycles of Lit
An. Acad. Bras. Ciênc.. Publicado em: 03/09/2018
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8. Evaluation of the Sustainability of Integrated Hydrothermal Synthesis of Zeolites Obtained from Waste
The high Si and Al contents in the amorphous phase of coal fly ash have been used for its conversion into zeolites. This process converts a toxic low-value by-product into a product used in a number of environmental applications, but has the disadvantage of introducing contaminants. Despite the large number of studies on the conversion of fly ash into zeolit
J. Braz. Chem. Soc.. Publicado em: 2018-07
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9. Pollen Viability and Autogamy Fitness in Bauhinia forficata Link (Fabaceae)
ABSTRACT Bauhinia forficata (Fabaceae) occurs in many phytophysiognomies of southern Brazil, however its ecological relevance is not well understood. The present study was developed in the Central Depression of Rio Grande do Sul and aimed to determine variations in pollen viability along flowering, ability to perform autogamy and dye efficiency for the viabi
Floresta Ambient.. Publicado em: 28/05/2018
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10. In vivo study of a homeopathic medicine against Rhipicephalus (Boophilus) microplus in dairy cow
ABSTRACT The tick Rhipicephalus (Boophilus) microplus (Canestrini, 1887) (Acari: Ixodidae) causes large economic losses to cattle breeders and its control is hampered by problems of resistance to the main commercial synthetic acaricides and the risk of residues in animal products. Alternative controls are important for the sustainability of cattle breeding i
Rev. bras. farmacogn.. Publicado em: 2018-04
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11. Effects of sex and altitude on nutrient, and carbon and nitrogen stable isotope composition of the endangered shrub Baccharis concinna G.M. Barroso (Asteraceae)
ABSTRACT Previous ecological studies of dioecious plant species have found that female plants preferentially occur at lower altitudes where there are typically better nutritional conditions, while male plants often occur in less favorable sites. We compared the ecophysiological performance of male and female plants in three populations of the dioecious Bacch
Acta Bot. Bras.. Publicado em: 2017-06
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12. Looking for attitudes related to amphibian species decline: how are peer-reviewed publications of education activities compared to ecological research?
ABSTRACT Biodiversity decline has been the focus of discussions in the last decade, especially on the amphibian species decline. After a scientometric analysis using international databases, we found that the number of peer-reviewed articles considering education practices related to the theme increased along with the number of ecological researches. However
An. Acad. Bras. Ciênc.. Publicado em: 2017-05