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| Registros recuperados: 167 | |
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| Cabral,Juarez R.; Freitas,Paulo S. L. de; Rezende,Roberto; Muniz,Antonio S.; Bertonha,Altair. |
| Swine wastewater (SW) has characteristics that allow its disposal in the soil as a fertilizer. This is an alternative in order not to accumulate this material in the farm as well as it provides savings with mineral fertilizers. The aim of this study was to evaluate the effect of applying swine wastewater on the chemical properties of a distrophic Red Latosol for two seasons. The experiment was carried out under field conditions with treatments defined as T0 = 0 (control), T1 = 150, T2 = 300, T3 = 450, T4 = 600, T5 = 750 m3 ha-1 of SW applied during the crop cycle of elephant grass. SW application contributed to the increase of magnesium and phosphorus and the reduction of soil aluminum in the first season. As for the second season when compared to the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Effluent; Environmental impact; Leaching. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662014000200012 |
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| Narváez,Yimmy Alexander Zapata; Beltrán-Acosta,Camilo Rubén. |
| Abstract The production of blackberry in Colombia is a source of income and rural employment in 18 departments; however, the plant is affected by diseases such as gray mold, anthracnose and powdery mildew that can cause losses of up to 70%. The control of these diseases is mainly carried out with chemical fungicides such as benomyl, carbendazim and mancozeb applied every 7 or 15 days. Nevertheless, being a continuous fructification plant of weekly harvest, the proximity between the application of the pesticides, the harvest, and its consumption represents a health risk due to the residually of these molecules, condition that affects its innocuousness and sustainability. Accordingly, this work aimed to develop an integrated management strategy for these... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Control; Efficacy; Food safety; Environmental impact; Residuality. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000500406 |
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| Brisque,Thaís; Campos-Silva,Lucas Andrei; Piratelli,Augusto João. |
| ABSTRACT Bird-window collisions are a dramatic cause of bird mortality globally. In Latin America, statistics are generally very scarce and/or inaccessible so the frequency of such incidents is still poorly understood. Nevertheless, civilians have applied preventive methods (e.g. adhesive bird-of-prey decals) sparsely but, to our knowledge, no study has evaluated their effectiveness in Brazil. Here, we estimated the mortality rate of bird-window collisions and tested the effectiveness of bird-of-prey decals at preventing such accidents. We undertook daily searches for bird carcasses, presumably resulting from window collisions, near all buildings on a university campus over seven months. Adhesive bird-of-prey decals were then applied to the two buildings... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental impact; Fauna depreciation; Human-made environment; Neotropical; Preventive actions; Urban birds. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702017000100310 |
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| Belettini,Frank; Seiffert,Walter Quadros; Lapa,Katt Regina; Vieira,Felipe do Nascimento; Santo,Carlos Manoel do Espírito; Arana,Luis Alejandro Vinatea. |
| ABSTRACT A life-cycle assessment was conducted during semi-intensive and super-intensive commercial cultivation of marine shrimp from December 2011 to June 2012, considering all phases from the preparation of the nursery to harvesting of the shrimp, to determine the carbon footprints of each process. Inputs and outputs associated to the production of 1 kg of shrimp were evaluated using the CML-1A baseline method, V3.01 EU25, with Software SimaPro® 8.0.2, to identify the factors of impact that are most relevant to the category global warming, measured in kg of CO2 eq. The grow-out phase contributed the most to the final results in super-intensive culture, which had a higher carbon footprint, 47.9967 kg of CO2 eq., which was 1.0042 kg of CO2 eq. in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental impact; Life-cycle analysis; Litopenaeus vannamei; Semi-intensive culture; Super-intensive culture. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100102 |
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| Oviedo-Rondón,Edgar O.. |
| The broiler industry produces efficiently animal protein, but generates residues with high contents of N, P, K, trace minerals, and high bacterial charge. The rapid microbial decomposition of these residues cause ammonia volatilization, nuisance odor, fine particulate matter, and attract insects and rodents. This presentation will discuss the more effective methods to utilize these resources and minimize potential environmental impact. These procedures include planning, personnel training, zoning of areas used to dispose the final residues in crop lands, farm isolation, precision nutrition, litter and house management practices, and appropriate mortality disposal. Broiler litter has been used for animal feeding and power generation. Additionally, new... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental impact; Residues; Broilers; Ammonia; Odor. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982008001300028 |
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| Alfaro,Marta; Salazar,Francisco. |
| In developed countries, intensive grazing has been related to water pollution. The results of several projects carried out on a volcanic soil of the Osorno soil series on beef grazing production systems have shown that grazing management did not increase total nitrogen (N) and phosphorus (P) transfer and losses. Due to the high water infiltration capacity of the soil, runoff was <1% of total drainage, therefore, N and P losses in runoff were small. Nitrogen leaching losses were high (3 up to 71 kg N ha-1 yr-1). Nitrogen loss in runoff was mainly lost as DON (c. 50%) while N leaching losses were mainly as nitrate (c. 70%). Total P losses ranged between 1 and 22 g P ha-1 yr-1 and they increased with increasing field slopes. Phosphorus was mainly lost as... |
| Tipo: Journal article |
Palavras-chave: Nitrogen; Phosphorus; Dairy production; Beef production; Environmental impact. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912008000200002 |
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| Marchesan,Enio; Zanella,Renato; Avila,Luis Antonio de; Camargo,Edinalvo Rabaioli; Machado,Sérgio Luiz de Oliveira; Macedo,Vera Regina Mussoi. |
| Irrigated rice production can involve environmental contamination with pesticides due to the proximity of the fields to rivers and to management problems. During three years (2000 to 2003) the rice herbicides clomazone, propanil and quinclorac were quantified in water during the rice growing season, in the Vacacaí and Vacacaí-Mirim Rivers, located in Rio Grande do Sul (RS) State, Brazil. Water samples were taken at several locations in each river, selected by their importance in terms of rice drainage area. The samples were analyzed by HPLC-UV. At least one herbicide was detected in 41% of the samples from the Vacacaí River and 33% from the Vacacaí-Mirim River. The most frequent herbicide in both rivers and in each year was clomazone. The amount of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Clomazone; Environmental impact; Pesticides; Propanil; Quinclorac. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000200005 |
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| Sparovek,Gerd; Correchel,Vladia; Barretto,Alberto G.O. Pereira. |
| Pastures are normally associated with minor erosion problems because of their efficient soil cover. Soil cover is without doubt the most effective inter-rill and rill erosion control practice. However, considering the frequency at which pastures are replanted in Brazil and their enormous territorial extension (178 million hectares) we identify that extensive areas, usually covered by pastures, will remain bare, intensively tilled, and without complementary mechanical soil control practices. The pasture area is equivalent to that occupied by most important Brazilian annual crops (corn or soybeans), that are usually cultivated under no-tillage or supported by governmental soil conservation programs. The precise assessment of these impacts, caused by the... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Environmental impact; Soil conservation research. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000100012 |
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| Lima,Nilsa Duarte Silva; Garcia,Rodrigo Garófallo; Nääs,Irenilza Alencar; Caldara,Fabiana Ribeiro; Ponso,Roselaine. |
| Ammonia (NH3) emissions from broiler production can affect human and animal health and may cause acidification and eutrophication of the surrounding environment. This study aimed to estimate ammonia emissions from broiler litter in two systems of forced ventilation, the tunnel ventilation (TV) and the dark house (DH). The experiment was carried out on eight commercial broiler houses, and the age of the birds (day, d), pH and litter temperature were recorded. Broilers were reared on built-up wood shaving litter using an average flock density of 14 bird m–2. Temperature and relative humidity inside the broiler houses were recorded in the morning during the grow-out period. A factorial experimental design was adopted, with two types of houses, four replicates... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Noxious gases; Environmental impact; Dark house; Poultry; Tunnel ventilation. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000500393 |
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| Almeida,Alexandre de; Couto,Hilton Thadeu Zarate do; Almeida,Álvaro Fernando de. |
| Seeds used to plant wheat, corn and rice crops in Brazil are treated with the insecticide carbofuran associated with the dye rhodamine B, attracting granivorous birds and causing mortality during sowing. The objective of this study was to evaluate if using camouflaged seeds can minimize mortality caused by the ingestion of seeds with carbofuran. Alternatives for reducing mortality, such as using carbofuran without rhodamine B or replacing carbofuran by carbosulfan, were compared. Three experiments were carried out in regions of known bird mortality in the states of Paraná and São Paulo, Brazil, using conventional sowing over plowed soil in the traditional planting system, 15,896 kg of seeds in 111.46 ha. Bird carcasses were collected and dissected to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zenaida auriculata; Carbofuran; Rhodamine B; Carbosulfan; Gustatory repellents; Environmental impact. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000200008 |
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| Ruiz,Urbano dos Santos; Thomaz,Maria Cristina; Lucas Júnior,Jorge de; Pascoal,Leonardo Augusto Fonseca; Watanabe,Pedro Henrique; Amorim,Alessandro Borges; Xavier,Cristiane de Almeida Neves; Silva,Adriane Andrade. |
| ABSTRACT This research aimed to evaluate enzyme supplementation in diets with different nutritional levels for pigs in their feces excretion and anaerobic digestion. Fifty four gilts were placed on diets formulated to achieve 100 or 95 or 90 % of a pig's nutrient requirements, with the addition of an enzyme complex containing amylase, β-glucanase, cellulase, pectinase, xylanase, protease and phytase (diets 100E, 95E and 90E) or without the enzymes (diets 100, 95 and 90). The trial was divided into three periods (1, 1-2 and 1-3) based on the animal weight. The enzyme complex reduced (p < 0.05) excretions per period and per unit of weight gain (residue coefficients) of organic matter (OM) in Period 1, of N, Ca, Zn and Na in Period 1-2, and of Na... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biogas; Environmental impact; Fecal production; Swine. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000300180 |
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| Watanabe, Pedro Henrique; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Thomaz, Maria Cristina; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Pascoal, Leonardo Augusto Fonseca; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Ruiz, Urbano dos Santos; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Daniel, Everton; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Amorim, Alessandro Borges; Universidade Estadual Paulista “Júlio de Mesquita Filho”. |
| A study was conducted to evaluate the feces+urine produced per animal (FUPA), dry matter, mineral matter, organic matter, nitrogen, phosphorus, potassium and sulfur in feces of gilts fed diets with increasing levels of ractopamine (0, 5, 10 and 15 mg kg-1 of diet). A total of 468 finishing gilts were allotted into 36 pens. In two days of each week, feces and urine were daily sampled in four pens per treatment, quantifying the feces+urine. To determine the characterization of feces, two samples per week were taken daily, in nine pens per treatment. It was used a split plot design, considering the ractopamine level as the plot and the weeks as the subplots. There was no reduction in nitrogen amount in feces. An interaction was detected between ractopamine... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nutrição animal; Nutrição de não-ruminantes; Additive; Environmental impact; Finishing; Mineral; Sus scrofa Additive; Environmental impact; Finishing; Mineral: Sus scrofa. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18662 |
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| Mormul, Roger Paulo; UEM; Junior, Sidnei Pressinatte; UEM; Vieira, Luiz Alberto; Monkolski, Alexandre; Faculdade Integrado de Campo Mourão; Povh, Edineia Barbosa; Faculdade Integrado de Campo Mourão. |
| As atividades antrópicas podem causar profundas alterações nas características físicas e químicas dos ambientes aquáticos, assim como na biota. Muitas espécies de invertebrados bentônicos podem auxiliar a indicação dessas alterações. No presente estudo, foi realizada a caracterização das condições ambientais de diferentes pontos do rio 119, Campo Mourão, Paraná, Brasil. Para tanto, foram analisadas condições físico-químicas da água e coletadas amostras do substrato do rio para análises físicas e biológicas. A densidade, a composição e a riqueza dos táxons de invertebrados bênticos encontrados foram utilizadas para diferenciar os pontos quanto às condições de alteração ambiental. Mudanças na densidade, na composição e na riqueza foram relatadas em todos os... |
| Tipo: Caracterização ambiental |
Palavras-chave: 2.05.00.00-9 bioindicadores; Impacto ambiental; Monitoramento biológico Ecologia biological indicators; Environmental impact; Biological monitoring. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4844 |
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| Bazzoli,Nilo; Silva,Viviane Elizabeth de Souza; Marcon,Lucas; Santiago,Kleber Biana; Santos,José Enemir dos; Rizzo,Elizete. |
| Abstract: In order to assess the influence of the Três Marias dam on the reproduction of the white piranha, Serrasalmus brandtii, 1569 specimens captured from June 2011 to May 2012 in three sections of the São Francisco River basin were analyzed: section 1 = Três Marias reservoir (TMR); section 2 = São Francisco River (SFR) segment immediately downstream of TMR; and section 3 = SFR segment at the confluence with the Abaeté River. Total length (TL), body weight (BW), gonadosomatic index (GSI), and gonadal maturation stages were determined for each specimen, while vitellogenic follicle diameter, and absolute (AF) and relative (RF) fecundities were also determined for females. Reproductive activity, including spawned females and spermed males, was recorded... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental impact; Thermal disturbances; Gonadal maturation. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000200206 |
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| Pestana,Débora; Ostrensky,Antonio; Boeger,Walter Antonio Pereira; Pie,Marcio Roberto. |
| The golden mussel (Limnoperna fortunei, Mollusca: Bivalvia) is an invasive species that has been causing considerable environmental and economic problems in South America. In the present study, filtration rates of L. fortunei were determined in the laboratory under different temperatures (10, 15, 20, 25, 28, and 30 ºC) and two types of food (Algamac-2000® and the chlorophycean alga Scenedesmus sp.). There was a statistically significant relationship between time and filtration rates in the experiment using Scenedesmus sp., regardless of temperature. However, this pattern was absent in the experiment using Algamac, suggesting that the relationship between filtration rates and temperature might depend on the size of the filtered particles. In addition, there... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Invasive species; Condition index; Scenedesmus sp.; Algamac-2000®; Environmental impact. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000100018 |
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| Registros recuperados: 167 | |
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