Revista Ambiente e Agua最新文献_第10页

Concentration of chlorhophyll-a and the limit of the photic zone in the Third River reservoir (Córdoba-Argentina), using images from CBERS-2B satellite 基于CBERS-2B卫星图像的第三河水库叶绿素-a浓度和光带极限(Córdoba-Argentina)

Revista Ambiente e Agua Pub Date : 2012-12-23 DOI: 10.4136/AMBI-AGUA.847

M. Bonansea, Claudia Ledesma, C. Rodríguez, Angel R. S. Delgado

{"title":"Concentration of chlorhophyll-a and the limit of the photic zone in the Third River reservoir (Córdoba-Argentina), using images from CBERS-2B satellite","authors":"M. Bonansea, Claudia Ledesma, C. Rodríguez, Angel R. S. Delgado","doi":"10.4136/AMBI-AGUA.847","DOIUrl":"https://doi.org/10.4136/AMBI-AGUA.847","url":null,"abstract":"The satellite images provided by remote sensors represent an important tool for monitoring, controlling and administering water resources. The aim of this work was to model the spatial distribution of the concentration of chlorhophyll-a and the limit of the photic zone in the Rio Tercero reservoir (Cordoba-Argentina), using images from CBERS-2B satellite and a geographical information system (SIG). We selected 15 samples places wherefrom we measured physical, chemical and biological parameters during the fall of 2008. By using a georeferenced image from sensor CBERS-2B and performing an analysis of the principal components (ACP), we were able to identify associations between variables and reflectance values of the satellite bands. Based on these associations and with simple regression models, we were able to know the spatial distribution of the variables: concentration of chlorophyll-a (R2 = 0, 73) and the limit of the photic zone (R2 = 0, 78) in the reservoir as a whole. We may conclude thata there exists a negative correlation between the concentration of chlorophyll-a and the water transparency in reservoir Rio Tercero, as well as that the sensor used allows us to evaluate the quality of the water in a relative short time.","PeriodicalId":38374,"journal":{"name":"Revista Ambiente e Agua","volume":"7 1","pages":"61-71"},"PeriodicalIF":0.0,"publicationDate":"2012-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70669099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Determination of the lethal doses LD50 and LD90 of Euphorbia splendens var. hislopii latex on Physa cubensis Pfeiffer 大戟叶胶对青苔虫致死量LD50和LD90的测定

Revista Ambiente e Agua Pub Date : 2012-12-23 DOI: 10.4136/AMBI-AGUA.860

José Augusto Albuquerque Dos Santos, V. Valin, A. D. S. F. Filho

引用次数: 2

Determinação de áreas prioritárias para o restabelecimento da cobertura florestal, apoiada no uso de geotecnologias 在利用土工技术的支持下，确定恢复森林覆盖的优先地区

Revista Ambiente e Agua Pub Date : 2012-12-01 DOI: 10.4136/AMBI-AGUA.964

C. S. Catelani, G. T. Batista, M. S. Targa, N. Dias

引用次数: 2

Vulnerabilidade natural e ambiental do município de Ponta Porã, Mato Grosso do Sul, Brasil 巴西南马托格罗索州蓬塔pora市的自然和环境脆弱性

Revista Ambiente e Agua Pub Date : 2012-08-27 DOI: 10.4136/AMBI-AGUA.786

Thalita Beatriz Antunes Klais, Fabrício Bau Dalmas, Renata Porto Morais, Gabriela Atique, Giancarlo Lastoria, Antonio Conceição Paranhos Filho

{"title":"Vulnerabilidade natural e ambiental do município de Ponta Porã, Mato Grosso do Sul, Brasil","authors":"Thalita Beatriz Antunes Klais, Fabrício Bau Dalmas, Renata Porto Morais, Gabriela Atique, Giancarlo Lastoria, Antonio Conceição Paranhos Filho","doi":"10.4136/AMBI-AGUA.786","DOIUrl":"https://doi.org/10.4136/AMBI-AGUA.786","url":null,"abstract":"The natural vulnerability of the environment is prone to natural agents like geomorphology, geology, soils and its stability in relation to morphogenesis and pedogenesis. The environmental vulnerability is defined as the susceptibility of the environment to any potential impact caused by human actions. The objectives of this work were the evaluation of the land use at Ponta Pora municipality, located on the border between Mato Grosso do Sul (Brazil) and Paraguay, as well as the determination of its natural and environmental vulnerability. For this purpose, maps of geology, agricultural suitability, slope, topographic sheets and Landsat TM satellite images were used. The natural vulnerability had average values in 62.8% of the study area, low values in 20.7%, high in 12.8% and very high values in 3.7%. The high values of natural vulnerability corresponded to high values of environmental vulnerability as well. So it has been observed that 75.2% of the municipality, corresponding to about 400,704 ha has high to very high environmental vulnerability. These numbers have been found mainly in areas occupied by pasture and crop lands.","PeriodicalId":38374,"journal":{"name":"Revista Ambiente e Agua","volume":"7 1","pages":"277-290"},"PeriodicalIF":0.0,"publicationDate":"2012-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70668259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Effect of the bentonite application on the cadmium mobility in an Argisol 膨润土对土中镉迁移率的影响

Revista Ambiente e Agua Pub Date : 2012-08-27 DOI: 10.4136/AMBI-AGUA.901

Gilvanise Alves Tito, L. H. G. Chaves, H. C. Guerra

{"title":"Effect of the bentonite application on the cadmium mobility in an Argisol","authors":"Gilvanise Alves Tito, L. H. G. Chaves, H. C. Guerra","doi":"10.4136/AMBI-AGUA.901","DOIUrl":"https://doi.org/10.4136/AMBI-AGUA.901","url":null,"abstract":"Objetivando-se avaliar o efeito da aplicacao de doses de bentonita (0, 30 e 60 t ha-1) na mobilidade do cadmio num Argissolo, realizaram-se ensaios de mobilidade do referido metal em colunas de solo com diferentes concentracoes de cadmio (50, 250 e 450 mg de kg-1de solo) submetidas a lixiviacao num regime saturado, determinando-se a densidade do fluxo e a velocidade de fluxo. O cadmio foi deslocado por pulso, isto e, a solucao contendo o cadmio inicialmente infiltrou no solo por um determinado tempo quando entao a lixiviacao foi continuada com agua destilada. Lixiviados foram coletados a cada 10 minutos durante 80 minutos de percolacao. As solucoes percoladas, expressas em volume de poros, foram 6,33; 2,28 e 1,93 para os tratamentos de bentonita de 0, 30 e 60 t ha-1 sendo um volume de poros igual a 1,22 cm3. As concentracoes de cadmio determinadas por espectrofotometria de absorcao atomica. Ao final dos ensaios, as colunas foram desmontadas e as concentracoes de cadmio no solo a diferentes profundidades (0-10, 10-20, 20-30 e 30-40 cm), foram tambem determinadas. Os resultados permitiram concluir que a densidade de fluxo e a velocidade de fluxo da solucao foram reduzidas significativamente com a incorporacao de bentonita ao solo. Os teores de cadmio do solo nao afetaram a densidade de fluxo nem a velocidade de fluxo da solucao. O aumento das doses de bentonita favoreceu a adsorcao do cadmio pelo solo.","PeriodicalId":38374,"journal":{"name":"Revista Ambiente e Agua","volume":"7 1","pages":"18-29"},"PeriodicalIF":0.0,"publicationDate":"2012-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70669560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ictiofauna de igarapés de pequenas bacias de drenagem em área agrícola do Nordeste Paraense, Amazônia Oriental 亚马逊东部para东北农业区小流域河流的鱼类种群

Revista Ambiente e Agua Pub Date : 2012-08-27 DOI: 10.4136/AMBI-AGUA.739

Jean Michel Corrêa, P. Gerhard, R. D. O. Figueiredo

{"title":"Ictiofauna de igarapés de pequenas bacias de drenagem em área agrícola do Nordeste Paraense, Amazônia Oriental","authors":"Jean Michel Corrêa, P. Gerhard, R. D. O. Figueiredo","doi":"10.4136/AMBI-AGUA.739","DOIUrl":"https://doi.org/10.4136/AMBI-AGUA.739","url":null,"abstract":"Comunidades de peixes podem se distribuir no espaco e no tempo de maneira organizada, seguindo um padrao que pode ser percebido pela associacao ou agrupamento das especies e pela relacao de algumas especies com determinados habitats. O numero reduzido de estudos e o pouco conhecimento da fauna aquatica na Amazonia resultam em sub-estimativas da diversidade da ictiofauna de igarapes (riachos amazonicos). No presente estudo, em tres microbacias predominantemente ocupadas por agricultura familiar, foram coletados 2.117 peixes, distribuidos em sete ordens, 13 familias, 27 generos e 43 especies. A especie mais abundante em todas as amostras coletadas foi Hyphessobrycon heterorhabdus, com 337 individuos, seguido por Bryconops melanurus, com 326 individuos. A riqueza de especies foi maior num trecho do Igarape Pachiba (IGPA-B), com 21 especies. O Indice de Dominância de Simpson mostrou o valor mais alto no trecho B do Igarape Cumaru, com valor 0,43, enquanto o Indice de Diversidade de Shannon revelou que o IGPA-B possuiu a maior diversidade, com valor 2,39. Iguanodectes rachovii foi a especie amostrada com mais constância, e ocorreu em 50% das amostras. Os resultados demonstraram que trechos medios dos igarapes apresentam maior diversidade de especies, respondendo ao tamanho do habitat. Neste estudo foi possivel observar que microbacias agricolas dominadas por agricultura de pequeno porte pode suportar uma diversidade de peixes de igarapes razoavel.","PeriodicalId":38374,"journal":{"name":"Revista Ambiente e Agua","volume":"7 1","pages":"214-230"},"PeriodicalIF":0.0,"publicationDate":"2012-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70667793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Adequação e avaliação da aplicabilidade de um Protocolo de Avaliação Rápida na bacia do rio Gualaxo do Norte, Leste-Sudeste do Quadrilátero Ferrífero, MG, Brasil 巴西MG quadrilatero ferrifero东南方瓜拉索河流域快速评估方案的适用性和评估

Revista Ambiente e Agua Pub Date : 2012-08-27 DOI: 10.4136/AMBI-AGUA.872

A. D. Rodrigues, G. Malafaia, Adivane Terezinha Costa, Hermínio Arias Nalini Júnior

引用次数: 14

Qualidade da água de uma represa localizada em área agrícola (Campo Verde, MT, Brasil) 位于农业区(Campo Verde, MT，巴西)的大坝水质

Revista Ambiente e Agua Pub Date : 2012-08-27 DOI: 10.4136/AMBI-AGUA.904

Carolina Hortêncio Malheiros, E. L. Hardoim, Zoraidy Marques de Lima, R. Amorim

引用次数: 3

Modelagem para integração de dados sobre macrobentos em Infraestrutura de Dados Espaciais 将宏类数据集成到空间数据基础设施中的建模

Revista Ambiente e Agua Pub Date : 2012-08-27 DOI: 10.4136/AMBI-AGUA.774

G. N. Carvalho, Mariana A. Giannotti, S. M. Sartor, J. A. Quintanilha

{"title":"Modelagem para integração de dados sobre macrobentos em Infraestrutura de Dados Espaciais","authors":"G. N. Carvalho, Mariana A. Giannotti, S. M. Sartor, J. A. Quintanilha","doi":"10.4136/AMBI-AGUA.774","DOIUrl":"https://doi.org/10.4136/AMBI-AGUA.774","url":null,"abstract":"Coastal zones are complex areas that include marine and terrestrial environments. Besides its huge environmental wealth, they also attracts humans because provides food, recreation, business, and transportation, among others. Some difficulties to manage these areas are related with their complexity, diversity of interests and the absence of standardization to collect and share data to scientific community, public agencies, among others. The idea to organize, standardize and share this information based on Web Atlas is essential to support planning and decision making issues. The construction of a spatial database integrating the environmental business, to be used on Spatial Data Infrastructure (SDI) is illustrated by a bioindicator that indicates the quality of the sediments. The models show the phases required to build Macrobenthos spatial database based on Santos Metropolitan Region as a reference. It is concluded that, when working with environmental data the structuring of knowledge in a conceptual model is essential for their subsequent integration into the SDI. During the modeling process it can be noticed that methodological issues related to the collection process may obstruct or prejudice the integration of data from different studies of the same area. The development of a database model, as presented in this study, can be used as a reference for further research with similar goals.","PeriodicalId":38374,"journal":{"name":"Revista Ambiente e Agua","volume":"7 1","pages":"195-213"},"PeriodicalIF":0.0,"publicationDate":"2012-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70668503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Pantanal de Cáceres: composição granulométrica dos sedimentos de fundo no rio Paraguai entre a foz do rio Cabaçal e a cidade de Cáceres, Mato Grosso, Brasil 潘塔纳尔德caceres:巴西马托格罗索州cabacal河口和caceres市之间巴拉圭河底部沉积物的粒度组成

Revista Ambiente e Agua Pub Date : 2012-08-27 DOI: 10.4136/AMBI-AGUA.876

G. Leandro, C. A. Souza

{"title":"Pantanal de Cáceres: composição granulométrica dos sedimentos de fundo no rio Paraguai entre a foz do rio Cabaçal e a cidade de Cáceres, Mato Grosso, Brasil","authors":"G. Leandro, C. A. Souza","doi":"10.4136/AMBI-AGUA.876","DOIUrl":"https://doi.org/10.4136/AMBI-AGUA.876","url":null,"abstract":"The objective of the study was to verify the granulometric composition of bottom sediments along the longitudinal profile of the Paraguay River between the outfall of the Cabacal River and the city of Caceres, Mato Grosso, comprised by the geographic coordinates 15o58'00'' and 16o50'00'' South Latitude and 57o40'00'' and 57o44'00'' West Longitude. Work activity was conducted to characterize the sites and sediments collection with Van Veen sediment sampler (seven samples); textural analysis of the sediments by the pipetting and sieving method (the method uses a combination of sieving and sedimentation). The Paraguay River exhibits a meandering style with two distinct periods (periodic flooding regime and drought) that associated with of bottom sediments alternate processes of erosion, transport and deposition from the discernible changes in the complex landscaping. Thus, the concentration of sand in the bed load transported in the channel (five samples) is related to environmental elements and land use. The fine sediments are transferred to the features (bays and ponds) and flood plain; the intense fluvial dynamics and the course (alluvial deposition areas) contribute to changes in channel and morphologic features (capacity transport and sediment depositions).","PeriodicalId":38374,"journal":{"name":"Revista Ambiente e Agua","volume":"7 1","pages":"263-276"},"PeriodicalIF":0.0,"publicationDate":"2012-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70669429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12