Academic literature on the topic 'Mesocosmo'

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Journal articles on the topic "Mesocosmo"

1

Martins, A. T., and R. A. Pitelli. "Efeitos do manejo de Eichhornia crassipes sobre a qualidade da água em condições de mesocosmos." Planta Daninha 23, no. 2 (2005): 233–42. http://dx.doi.org/10.1590/s0100-83582005000200009.

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As macrófitas, apesar da enorme importância na dinâmica do ambiente aquático, quando formam extensas e densas colonizações, promovem uma série de prejuízos ao ambiente e aos usos múltiplos dos reservatórios. Nessas situações, há necessidade de redução de seu tamanho populacional, seja reduzindo as condições favoráveis ao crescimento, seja por meio do controle direto das plantas. Dentre as macrófitas aquáticas que promovem esses tipos de problema, o aguapé (Eichhornia crassipes) é considerada a mais importante. Seu controle é praticado em todo o mundo. O diquat tem sido bastante utilizado para
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2

Lawrence, J. R., and M. J. Hendry. "Mesocosms for Subsurface Research." Water Quality Research Journal 30, no. 3 (1995): 493–512. http://dx.doi.org/10.2166/wqrj.1995.039.

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Abstract This article provides an overview of mesocosm research applied to investigations of subsurface processes. The nature of mesocosms and the mesocosm concept are defined and discussed as are the advantages and disadvantages of these systems. In general, a mesocosm meets the requirements of being of sufficient size to contain all the components of interest while permitting “natural” behaviour. It is implicit in the use of mesocosms that they act as a surrogate for the real ecosystem. However, the precise size of a mesocosm is difficult to define without a specific context. Details are pro
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3

Ferriol, Carmen, Maria Rosa Miracle, and Eduardo Vicente. "Effects of nutrient addition, recovery thereafter and the role of macrophytes in nutrient dynamics of a Mediterranean shallow lake: a mesocosm experiment." Marine and Freshwater Research 68, no. 3 (2017): 506. http://dx.doi.org/10.1071/mf15291.

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Eutrophication in coastal wetlands has increased greatly because of human impact, reducing water quality and affecting aquatic plants. The aim of the present study was to investigate the eutrophication of Mediterranean wetlands and their possible recovery. An in situ mesocosm nutrient enrichment experiment was performed in a coastal shallow lake from eastern Spain, holding dense Chara meadows. In this lake, 36 mesocosms were installed and fertilised weekly with four levels of N and P addition over an 8-week period from June to August. Mesocosms fertilised with the two higher levels (N:P ≥5:0.5
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4

Cruz, Claudinei da, João Henrique Corti Cervoni, Adilson Ferreira Silva, Nathalia Garlich, and Robinson Antonio Pitelli. "APLICAÇÃO SEQUENCIAL DE GLYPHOSATE EM PLANTAS AQUÁTICAS DE DIFÍCIL CONTROLE EM CONDIÇÃO DE MESOCOSMO." Ciência e cultura (Barretos) 13, no. 2 (2017): 59–63. http://dx.doi.org/10.4322/1980-0029.132017.

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Yang, L., and C. C. Hu. "Treatments of oil-refinery and steel-mill wastewaters by mesocosm constructed wetland systems." Water Science and Technology 51, no. 9 (2005): 157–64. http://dx.doi.org/10.2166/wst.2005.0309.

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In this study, two types of industrial wastewater, oil-refining and steel-milling, were selected for investigating their feasibility of treatment by mesocosm constructed wetland systems. The secondly treated effluents from the wastewater treatment plants were directly discharged into the systems controlled at different flow rates. Three wetland mesocosms were installed in the two industries: mesocosms A and B were in the oil refinery, and mesocosm C was in the steel mill. The substratum media used in wetland systems were sand (mesocosm A) and gravel (mesocosms B and C), while the vegetation ty
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Maria, Marina Andrada, Liséte Celina Lange, Samuel Rodrigues Castro, Rose Lílian Miranda, and Mônica Alves Mamão. "Efeito do Herbicida Roundup Original® a base de glifosato em organismos não alvo utilizando modelo mesocosmo." Revista em Agronegócio e Meio Ambiente 13, no. 1 (2020): 279–300. http://dx.doi.org/10.17765/2176-9168.2020v13n1p279-300.

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Foram criados mesocosmos de lagoa para avaliação do efeito de glifosato a organismos não alvo, quando utilizado para o controle de Eichhornia crassipes (Mart.) Solms (1883) e Salvinia sp., macrófitas aquáticas flutuantes. Foi utilizada a formulação comercial Roundup Original®. Avaliou-se o efeito sobre bactérias por meio de ensaios de determinação de coliformes totais, Escherichia coli e contagem de bactérias heterotróficas; sobre fitoplâncton e perifíton; e sobre caramujos e peixes. Ocorreram flutuações na comunidade bacteriana com rápido reestabelecimento, sem consequências consideráveis par
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7

McHenry, J., and A. Werker. "In-situ monitoring of microbial biomass in wetland mesocosms." Water Science and Technology 51, no. 9 (2005): 233–41. http://dx.doi.org/10.2166/wst.2005.0326.

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The objective of the present investigation has been to combine tracer principles and a hydrolytic microbial activity assay using fluorescein diacetate to monitor changes in microbial biomass within subsurface flow wetland mesocosms. The mesocosm hydrolytic activity was referenced to activated sludge concentrations treating a typical domestic wastewater at full scale. Microbial biomass activity levels within four laboratory wetland mesocosms treating a synthetic domestic wastewater were routinely monitored over a 21-week period of plant growth and rhizosphere development. Although above ground
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8

Roy, A. S., S. M. Gibbons, H. Schunck, et al. "Ocean acidification shows negligible impacts on high-latitude bacterial community structure in coastal pelagic mesocosms." Biogeosciences Discussions 9, no. 9 (2012): 13319–49. http://dx.doi.org/10.5194/bgd-9-13319-2012.

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Abstract. The impact of ocean acidification and carbonation on microbial community structure was assessed during a large-scale in situ costal pelagic mesocosm study, included as part of the EPOCA 2010 Arctic campaign. The mesocosm experiment included ambient conditions (fjord) and nine mesocosms, with pCO2 range from ~145 to ~1420 μatm. Samples collected at nine time points (t-1, t1, t5, t7, t12, t14, t22, t26 to t28) in seven treatments (ambient fjord (~145), 2×~185, ~270, ~685, ~820, ~1050 μatm) were analysed for "free-living" and "particle associated" microbial community composition using 1
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Aceves, Alison K., Paul D. Johnson, Carla L. Atkinson, Brian C. van Ee, Stephen A. Bullard, and Cova R. Arias. "Digestive gland microbiome of Pleurobema cordatum: mesocosms induce dysbiosis." Journal of Molluscan Studies 86, no. 4 (2020): 280–89. http://dx.doi.org/10.1093/mollus/eyaa024.

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ABSTRACT Herein, we characterized the digestive gland (‘gut’) bacterial community (microbiome) of the Ohio pigtoe, Pleurobema cordatum (Rafinesque, 1820), using 16S rRNA gene sequencing. Two populations were compared: wild P. cordatum (n = 5) from the Tennessee River and P. cordatum (n = 9) relocated to artificial mesocosms and exposed to various thermal regimes for 2 weeks. We also characterized the bacterial communities from the habitat (water and sediment) of these wild and mesocosm-held populations. The gut microbiome of wild P. cordatum was dominated by members of the bacterial phylum Ten
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10

Schwier, Allison N., Karine Sellegri, Sébastien Mas, et al. "Primary marine aerosol physical flux and chemical composition during a nutrient enrichment experiment in mesocosms in the Mediterranean Sea." Atmospheric Chemistry and Physics 17, no. 23 (2017): 14645–60. http://dx.doi.org/10.5194/acp-17-14645-2017.

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Abstract. While primary marine aerosol (PMA) is an important part of global aerosol total emissions, its chemical composition and physical flux as a function of the biogeochemical properties of the seawater still remain highly uncharacterized due to the multiplicity of physical, chemical and biological parameters that are involved in the emission process. Here, two nutrient-enriched mesocosms and one control mesocosm, both filled with Mediterranean seawater, were studied over a 3-week period. PMA generated from the mesocosm waters were characterized in term of chemical composition, size distri
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