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Evidence of mutagenic and lethal effects of herbicides on Amazonian frogs Acta Amazonica
FERRANTE,Lucas; FEARNSIDE,Philip M..
ABSTRACT Amphibians are excellent bioindicators because they are sensitive to chemical pollution and can indicate ecosystem changes due to the presence of or exposure to chemical compounds. Here we report evidence of the impact of herbicides, including glyphosate, on amphibians in a locality in the central Brazilian Amazon and compare it with data from other biomes in Brazil. We observed malformations in three species of Leptodactylus and local extinctions of Scinax ruber and Rhinella marina from reproductive sites close to an area where herbicides had been applied. The observations in the Amazon are similar to reports from Brazil’s Atlantic forest on morphological anomalies and mortality in amphibians exposed to herbicides. We warn of the threat of...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Agrochemicals; Amazon Forest; Anurans; Bioindicators; Ecotoxicology; Environmental impact.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000400363
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Manure production and mineral excretion in feces of gilts fed ractopamine - doi: 10.4025/actascianimsci.v35i3.18662 Animal Sciences
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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Caracterização das condições ambientais de um rio neotropical a partir da densidade, composição e riqueza de taxa de invertebrados bênticos - DOI: 10.4025/actascibiolsci.v31i4.4844 Biological Sciences
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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Acute toxicity of sodium metabisulphite on mangrove crab Ucides cordatus (Decapoda, Ucididae) Anais da ABC (AABC)
Pedale,Adriana B.; Fujimoto,Rodrigo Y.; Santos,Rudã F.B.; Abrunhosa,Fernando A..
The sodium metabisulphite salt is usually used in shrimp culture to prevent black spot. Unfortunately the toxicological effect of this xenobiotic in decapod crabs is unknown. Thus, the present study aims to investigate the sodium metabisulphite LC50 - 96 h in the mangrove species Ucides cordatus. Crabs were collected in the tidal creek margins in Bragança estuarine and were submitted to preliminary test (screening) and posterior definitive test. Crabs were exposed in five different concentrations and a control group in five replicates, two crabs per recipient (5 L) during 96 hours. A negative correlation was observed to sodium metabisulphite concentration in relation to dissolved oxygen and pH. At the end of the experiment were obtained the following...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Shrimp culture; Environmental impact; Metabisulphite; Lethal concentration; Neotropical species.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400015
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Zooplankton communities as eutrophication bioindicators in tropical reservoirs Biota Neotropica
Gazonato Neto,Antonio José; Silva,Lidiane Cristina da; Saggio,Angelo Augusto; Rocha,Odete.
Eutrophication is a process characterized by an increase in the aquatic system productivity, which causes profound changes in the structure of its communities. Owing to the high environmental sensitivity of planktonic species, the study of their communities can indicate the deterioration of the environment. The Jaguari and Jacareí reservoirs are part of the Cantareira System, supplying water to São Paulo inhabitants and that has been affected by several forms of continuous human interference. Here we analyze some properties of the zooplankton community as bioindicators of eutrophication and water quality change. In situ physical and chemical measurements were carried out, water was collected for analysis and quantitative zooplankton samples were taken at...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zooplankton; ABC curves; Calanoida/Cyclopoida ratio; Cantareira System; Environmental impact.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032014000400104
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The influence of a large reservoir on the reproductive activity of the white piranha, Serrasalmus brandtii (Lütken, 1875) in Southeast Brazil Biota Neotropica
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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Evaluation of Global Heating Reduction Potential with the Replacement of Electricity Supplied by the Local Concessionaire Via Solar Renewable Source. BABT
Pepplow,Luiz Amilton; Silva,Vander Luiz da; Betini,Roberto C.; Pereira,Thulio C. G..
Abstract The objective of this paper is to evaluate, through the 100-year Life Cycle Analysis, Global Warming Potential (GWP) and Global Temperature Increasing Potential (GTP) impact categories. It is proposed scenario of replacement of the energy matrix for the supply of electricity by Solar Photovoltaic, adopting as consumption base the facilities of Supermarkets, as they contribute to environmental impacts for greenhouse gas emissions such as: intensive use of electricity, occupation large areas such as the main building or parking lot sealing the ground, the movement of customers' vehicles with air and noise pollution and the use of plastic bags. Modifying the energy matrix using electricity from renewable sources enables the reduction of greenhouse...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Renewable energy; Life cycle assessment; Environmental impact.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000200202
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EI Scale: an environmental impact assessment scale related to the construction materials used in the reinforced concrete BABT
Morales,Gilson; Jungles,Antonio Edésio; Klein,Sheila Elisa Scheidemantel; Guarda,Juliana.
This study aimed to create EI Scal, an environmental impact assessment scal, related to construction materials used in the reinforced concrete structure production. The main reason for that was based on the need to classify the environmental impact levels through indicators to assess the damage level process. The scale allowed converting information to estimate the environmental impact caused. Indicators were defined trough the requirements and classification criteria of impact aspects considering the eco-design theory. Moreover, the scale allowed classifying the materials and processes environmental impact through four score categories which resulted in a single final impact score. It was concluded that the EI scale could be cheap, accessible, and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Environmental impact; Eco-design; Reinforced concrete production; Construction.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000600029
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Characterization and evaluation of the impact of feed management on the effluents of Nile tilapia (Oreochromis niloticus) culture BABT
Baccarin,Ana Eliza; Camargo,Antonio Fernando Monteiro.
The objective of this study was to evaluate the effect of different feed management on the quality of effluent water generated in Nile tilapia (Oreochromis niloticus) culture ponds. Feed was supplied as follows: natural food, and pelleted, extruded or minced ration. The study was conducted during 19 weeks in 12 continuous water exchange ponds of 300 m² each, with a population of male Nile tilapia juveniles, in a density equal to 1.7 fish m-2. Feeds contained 30% crude protein, 3,000 kcal digestible energy, and were supplied twice a day. Natural food consisted of chicken manure. Temperature, dissolved oxygen, pH, total phosphorus, total nitrogen, chlorophyll a and suspended solids were monitored weekly in the supplying and effluent water. Water residence...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish culture; Environmental impact; Feed management; Effluent.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000100012
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The effect of temperature and body size on filtration rates of Limnoperna fortunei (Bivalvia, Mytilidae) under laboratory conditions BABT
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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MACRO simulator (version 5.0) for predicting atrazine herbicide behavior in brazilian latosols Ciência e Agrotecnologia
Vasconcelos,Fernanda Carla Wasner; Carvalho,Samara Andrade; Silva,Sérgio Henrique Godinho; Silva,Elen Alvarenga; Guerreiro,Mário César; Curi,Nilton.
The knowledge of pesticides behavior is fundamental for understanding the environmental impact caused by these products. However, related field experiments are time consuming and expensive. The MACRO® simulator allows to predicting the leaching of pesticides through the soil profile and the possible environmental contamination. The objective of this work was to study the percolate behavior and the atrazine leaching in two contrasting Latosols using the MACRO® simulator. The MACRO® simulator was adequate to predict atrazine behavior under the studied conditions and it can be used for the risk evaluation of atrazine contamination in surface and underground waters.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pesticide; Leaching; Environmental impact.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000300003
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Characterization of different techniques for obtaining minced fish from tilapia waste Ciênc. Tecnol. Aliment.
LEIRA,Matheus Hernandes; NASCIMENTO,Ariane Flávia do; ALVES,Felipe Ribeiro; ORFAO,Laura; LACERDA,Yasmim Gonçalves; BOTELHO,Hortência Aparecida; REGHIM,Lucas; LAGO,Aline de Assis.
Abstract The majority of tilapia farming is used for the production of fillets, resulting in the generation of waste that can be used to increase food stocks by producing minced fish. The aim of this study was to characterize and evaluate the viability of boiling and mechanical techniques for obtaining minced fish in relation to performance, physical-chemical and microbiological parameters and to reduce the waste generated in the process of filleting Nile tilapia. Based on performance outcomes, the mechanical technique proved to be 12% more efficient than the boiling one. The cost of the boiling technique was higher due to performance and operating costs. In both techniques microbiological alterations were not observed. Centesimal analysis results showed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chemical composition; Environmental impact; Mechanically deboned meat (MDM); Microbiological evaluation; Percentage yield.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000500063
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Assessing environmental impacts using a comparative LCA of industrial and artisanal production processes: "Minas Cheese" case Ciênc. Tecnol. Aliment.
Nigri,Elbert Muller; Barros,Aline Capanema de; Rocha,Sonia Denise Ferreira; Romeiro Filho,Eduardo.
This study uses the Life Cycle Assessment (LCA) methodology to evaluate and compare the environmental impacts caused by both the artisanal and the industrial manufacturing processes of "Minas cheese". This is a traditional cheese produced in the state of Minas Gerais (Brazil), and it is considered a "cultural patrimony" in the country. The high participation of artisanal producers in the market justifies this research, and this analysis can help the identification of opportunities to improve the environmental performance of several stages of the production system. The environmental impacts caused were also assessed and compared. The functional unit adopted was 1 kilogram (Kg) of cheese. The system boundaries considered were the production process,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: LCA; Life Cycle Assessments; Industrial production; Artisanal process; Minas" cheese; Environmental impact.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612014000300013
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Stability and phosphorus leaching of tilapia feed in water Ciência Rural
Bueno,Guilherme Wolff; Mattos,Bruno Olivetti de; Neu,Dacley Hertes; David,Fernanda Seles; Feiden,Aldi; Boscolo,Wilson Rogério.
ABSTRACT: The present research aimed to investigate the stabil¬¬ity of pellets and phosphorus leaching of diets formulated for juveniles of Nile tilapia (Oreochromis niloticus), with different sources of phosphorus and different exposure times in water. Six diets were elaborated by varying the source of phosphorus (1 ‒ dicalcium phosphate (DP); 2 ‒ meat and bone meal (MBM); 3 ‒ poultry meal (PM); 4 ‒ anchovy meal (AM); 5 ‒ tilapia filleting industrial meal (TM); 6 ‒ calcined bone meal (CBM)) and, then, were submitted to four exposure times in water (5, 10, 15 and 20 minutes), with three replicates. Thus, 72 aquariums of 30‒liters were used, each being an experimental unit. All diets were evaluated for electrical conductivity of water, turgidity of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquaculture; Aquafeed; Environmental impact; Phosphorus leaching; Water quality.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000600652
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Blood sucking Diptera (Culicidae, Psychodidae, Simuliidae) in forest fragment under impact of dam in the borderland of Rio Grande do Sul and Santa Catarina states, Brazil Ciência Rural
Muller,Gerson Azulim; Dalavequia,Maira Aparecida; Wagner,Glauber; Marcondes,Carlos Brisola.
The study of Diptera of medical importance in areas affected by dam constructions is very important due to the possibility of the occurrence of diseases transmitted by these species. Collections were performed during 2010 and 2011 in an area under impact of a dam on the Uruguai River in the borderland of Rio Grande do Sul and Santa Catarina states. Insects were collected using suction tubes and Shannon trap, also immature live forms were obtained by manual collect. Eight-hundred sixty-one Diptera insects were captured, including Haemagogus leucocelaenus (Culicidae), Aedes albopictus (Culicidae), three species of Anopheles spp. (Culicidae), two of Plebotominae and three distinct Simuliidae species. The Diptera fauna in the area is diversified and species...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dams; Diptera; Environmental impact; Vectors.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000701194
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Applying precision feeding to improve the nitrogen efficiency of swine production: a review of possible practices and obstacles Ciência Rural
Monteiro,Alessandra Nardina Trícia Rigo; Bertol,Teresinha Marisa; Kessler,Alexandre de Mello.
ABSTRACT: Optimizing nutrient efficiency is essential in order to increase sustainability of pig production systems, especially where the growing demand for food must be met at an affordable cost, without compromising environmental resources. To make this happen, it is necessary to develop efficient methods to accurately estimate the nutritional requirements of animals, as well as develop equipment and systems that allow for applying such expertise in the production system. Estimating the nutritional requirement of pigs through mathematical models, considering several factors that can impact the requirement, is a key factor to reduce the environmental load from pig production. Likewise, feed formulation and feeding programs, can help to achieve this. In...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diet formulation; Environmental impact; Modelling; Nutritional requirement; Pig.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700653
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Life cycle assessment as a tool to evaluate the impact of reducing crude protein in pig diets Ciência Rural
Monteiro,Alessandra Nardina Trícia Rigo; Dourmad,Jean-Yves; Pozza,Paulo Cesar.
ABSTRACT: Environmental impacts of livestock systems, especially pig production, have come under increasing debate in recent years. The challenge is in meeting the growing demand for food at an affordable cost, without compromising environmental integrity. Previous studies have shown that feed production is responsible for the majority of CO2-eq. emission resulting from pig farming systems. This seems to indicate that feed strategies could be an effective tool to achieve the sustainability of the pork chain. Therefore, dietary crude protein reduction, through the addition of industrial amino acids, lessens the nitrogen excretion by pigs and, consequently, could mitigate the effects on the environment of pig production. In this sense, to effectively...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Crude protein; Environmental impact; Global warming potential; Greenhouse gases; Nutrient.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600653
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Evaluación de impacto ambiental por el método Batelle Columbus del túnel de desfogue de la laguna de Metztitlán, Estado de Hidalgo. Colegio de Postgraduados
Mendoza Cariño, Mayra.
El Distrito de Riego 08 se localiza en la Cuenca de Metztitlán, en la Reserva de la Biósfera de la Barranca de Metztitlán (RBBM) parte Norte. El desbordamiento del río y la laguna Metztitlán ocasionan inundaciones en la zona con una frecuencia de 2.5 años (CNA, 2003). Aunque ya existen dos túneles de desfogue de la laguna al río Almolón, estos son insuficientes pues liberan el agua en más de seis meses por ello, la Comisión Nacional del Agua propone construir un nuevo túnel. El objetivo de esta investigación fue evaluar el impacto ambiental en la biodiversidad de la RBBM con base en las categorías de Ecología y Contaminación del Método Batelle Columbus (MBC), que generará la construcción del túnel de desfogue propuesto para la laguna de Metztitlán, en el...
Palavras-chave: Impacto ambiental; Impacto neto global; Environmental impact; Neat global impact; Maestría; Hidrociencias.
Ano: 2010 URL: http://hdl.handle.net/10521/145
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Situación socio económica y ambiental de los productores de Acatzingo Puebla por el derrame de hidrocarburo en suelos agrícolas. Colegio de Postgraduados
Rivera Pineda, Franklin.
En el presente estudio se aborda el siniestro ocurrido en el municipio de Acatzingo, Puebla en enero del año 2002. El derrame afectó aproximadamente 50 ha de cultivo, con efectos socioambientales, económicos y de producción en familias campesinas del municipio. Para conocer su impacto ocho años después, se encuestaron 159 productores con características socioeconómicas y productivas similares, 80 con terrenos afectados por el siniestro y 79 no afectados directamente, con el propósito de comparar respuestas en el tiempo. El promedio de hectáreas para cultivo por productor es de 1.7 ha con una media de 0.5 a 0.9 ha que les fueron contaminadas. El estudio mostró que 46.3% de los productores afectados opinó que los suelos aún están contaminados pero un 74% de...
Palavras-chave: Contaminación de suelos agrícolas; Cultivo; Campesino; Derrame de hidrocarburos; Desastre natural; Impacto ambiental; Ingresos; Producción; Salud; Contamination of agricultural soils; Farming; Farmer; Oil spill; Natural disaster; Environmental impact; Income; Production; Health; EDAR; Estrategias para el Desarrollo Agrícola Regional; Doctorado.
Ano: 2011 URL: http://hdl.handle.net/10521/657
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Evaluación de impacto ambiental por el método Batelle Columbus del túnel de desfogue de la laguna de Metztitlán, Estado de Hidalgo. Colegio de Postgraduados
Mendoza Cariño, Mayra.
El Distrito de Riego 08 se localiza en la Cuenca de Metztitlán, en la Reserva de la Biósfera de la Barranca de Metztitlán (RBBM) parte Norte. El desbordamiento del río y la laguna Metztitlán ocasionan inundaciones en la zona con una frecuencia de 2.5 años (CNA, 2003). Aunque ya existen dos túneles de desfogue de la laguna al río Almolón, estos son insuficientes pues liberan el agua en más de seis meses por ello, la Comisión Nacional del Agua propone construir un nuevo túnel. El objetivo de esta investigación fue evaluar el impacto ambiental en la biodiversidad de la RBBM con base en las categorías de Ecología y Contaminación del Método Batelle Columbus (MBC), que generará la construcción del túnel de desfogue propuesto para la laguna de Metztitlán, en el...
Palavras-chave: Impacto ambiental; Impacto neto global; Environmental impact; Neat global impact; Maestría; Hidrociencias.
Ano: 2010 URL: http://hdl.handle.net/10521/145
Registros recuperados: 178
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