خيارات البحث
النتائج 1 - 10 من 63
Agua de lastre y especies exóticas | Ballast water and exotic species النص الكامل
2013
Correa, N. | Almada, P.S.
El agua que los navíos embarcan como lastre cuando deben atravesar el océano sin carga suele contener organismos vivos. Al ser descargada aquella, estos ingresan en un medio al que son ajenos y pueden convertirse en plagas y en muchos casos originan serios trastornos ambientales. Los organismos descargados son especies exóticas. Se muestra un estudio en 5 puertos argentinos (océano Atlántico sudoccidental), formas de mitigar los trastornos y el estado de la situación actual de la problemática, con lecturas sugeridas. | Reprinted as: pp.161-166 in, Ciencia del Mar. Volumen temático 1, 12/2014; Asociación Ciencia Hoy. ISBN: 978-987-45584-0-4 (Special issue dedicated to 'Marine Sciences: 1988-2014')
اظهر المزيد [+] اقل [-][Environmental Council, Agricultural and Water of Murcia [Spain]] | Consejería de Medio Ambiente, Agricultura y Agua de Murcia
1999
Veredas do triângulo mineiro: solos, água e uso Veredas of Minas Gerais Triangle: soils, water and use النص الكامل
2006
Marcus Vinícius Vieitas Ramos | Nilton Curi | Paulo Emílio Ferreira da Motta | Antonio Carlos Tadeu Vitorino | Mozart Martins Ferreira | Marx Leandro Naves Silva
Sendo as veredas importantes reguladores do equilíbrio dos cursos d'água da região dos cerrados, objetivou-se caracterizar e comparar solo, água e tipo de uso destes ambientes nas superfícies geomórficas Chapadas e Arenito Bauru. Foram coletadas amostras dos solos e da água, das veredas. O uso foi analisado por observações de campo e entrevistas com proprietários rurais. As veredas apresentam solos hidromórficos em toda a sua extensão, havendo maior homogeneidade no Bauru. Do terço superior em direção ao terço inferior, a drenagem piora, e são maiores os teores de argila, matéria orgânica e fertilidade natural. As veredas do Bauru apresentam melhor drenagem, maior fertilidade, menores teores de matéria orgânica de argila. A água enquadrou-se na classe 4, principalmente em função da cor, acompanhando variações do teor de matéria orgânica do solo. Nas veredas da Chapada, o uso da água na agricultura gera risco de contaminação ambiental, enquanto no Bauru, é comum seu represamento para dessedentação do gado. Os solos das veredas do Bauru são utilizados com freqüência para pastagem nativa, os da Chapada, são mantidos sem uso. A cor preta ou cinzenta dos solos é um atributo de fácil identificação no campo para delimitar tais ambientes.<br>Being the veredas (swampy plains between hills and rivers) important regulators of water courses equilibrium at the cerrado region, we aimed to characterize and to compare soils, water and use type of these environments in Chapada and Arenito Bauru geomorphic surfaces. Soil and water samples were collected from the veredas. The use was analysed through field observations and interviews with farmers. The veredas present hydromorphic soils in all their extension, occurring higher homogeneity in Bauru. From the superior to the inferior part, the drainage gets worse, and the clay contents, organic matter and natural fertility increase. The Bauru veredas present better drainage, higher natural fertility, smaller amounts of organic matter and clay.The water was classified as class 4, mainly as a function of color, following variations in the soil organic matter content. At Chapada veredas, the water use in agriculture generates environmental contamination risk, while at the Bauru ones, it is common the water damming up for cattle supplying. The soils of Bauru veredas are frequently used for native pasture, while the Chapada ones are maintained without use. The black or grayish color of the veredas soils is an easily-identifiable field attribute for delimitation of such environments.
اظهر المزيد [+] اقل [-]Considerations about the efficient use of the water in the irrigation | Consideraciones sobre el uso eficiente del agua
2000
Fundora Pineiro, R. | Perez Duarte, W. (Universidad Agraria de La Habana (Cuba))
Situacion actuel del recurso agua النص الكامل
2010
Gonzalez Barrios, Jose Luis | Descroix, Luc | Sanchez Cohen, Ignacio
Situacion actuel del recurso agua النص الكامل
2010
Gonzalez Barrios, Jose Luis | Descroix, Luc | Sanchez Cohen, Ignacio | Instituto Nacional de Investigaciones Forestales, Agricolas y Pecuarias [Mexico] (INIFAP) | Laboratoire d'étude des transferts en hydrologie et environnement (LTHE) ; Observatoire des Sciences de l'Univers de Grenoble (OSUG) ; Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS) | Institut de Recherche pour le Développement (IRD)
International audience
اظهر المزيد [+] اقل [-]agua y el medio ambiente
1977
Holy, M.
Mirando sobre y bajo el agua النص الكامل
2011
Trevizan Rispoli, Juan Francisco(Universidad de Tarapacá)
RESUMEN El agua es un compuesto que gracias a sus propiedades ha posibilitado la vida, ha conformado el paisaje y ha moldeado las civilizaciones en la faz de la tierra. No todas las regiones poseen la misma disponibilidad y su escasez relativa; junto con el cambio climático está generando conflictos entre pueblos y actividades económicas y medioambientales, pero siendo un conflicto global, se debe enfrentar en la esfera local, para lo cual se deben fortalecer las capacidades locales en todos aquellos ámbitos en que el agua participa. | ABSTRACT Thanks to the properties of water life is possible; it has shaped the landscape and molded the civilizations on the face of the earth. Not all regions have adequate availability of water; its relative scarcity together with climate change is generating conflicts between nations and between economic activity and environmental concerns. Although this is a global conflict, it must be faced in local spheres, thus it is necessary to strengthen local capacities in all areas in which water is a factor.
اظهر المزيد [+] اقل [-]Agua, Megaciudades y Cambio Climatico | Agua, Megaciudades y Cambio Climatico: Retrato de 15 ciudades emblemáticas del mundo النص الكامل
2016
Lossouarn, Cléo | Pangare, Vasudha | Fenghua, Sun | Lentini, Emilio J. | Loftus, Tim | Dickinson, Mary Ann | Ngoc, Tien Dung Tran | Perset, Morgane | Strady, Emilie | Phan, Thi San Ha | Vachaud, Georges | Quertamp, Fanny | Gratiot, Nicolas | Ozturk, Izzet | Altay, Dursun Atilla | Oteri, Akomeno | Rasheed, A. Ayeni | Parker, Jo | Hagekhalil, Adel | Wiersema, Inge | Thapan, Arjun | Chavez, Ruben | Hukku, Ashok | Phatak, Jairaj | Licata, Angela | Tabuchi, Jean-Pierre | Tassin, Bruno | Blatrix, Cécile | Park, Yonghyo | Cho, Kwansik | Yoshida, Ei | Ishihara, Kiyotsugu | Daigo, Yugi | Syndicat interdépartemental pour l'assainissement de l'agglomération parisienne (SIAAP) | Institut de recherche des Nations unies pour le développement social (UNRISD) ; Nations Unies | Beijing Water Authority | Inst Univ Buenos Aires, Ctr Estudios Transdisciplinarios Agua, Buenos Aires, DF, Argentina ; affiliation inconnue | Texas State University | Alliance for Water Efficiency | Ho Chi Minh City University of Technology [Vietnam National University, HCM] (HCMUT) ; Vietnam National University, Ho Chi Minh City / Đại học Quốc gia TP. Hồ Chí Minh (VNU-HCM) | Centre Asiatique de Recherche sur l'Eau (CARE) ; Ho Chi Minh City University of Technology [Vietnam National University, HCM] (HCMUT) ; Vietnam National University, Ho Chi Minh City / Đại học Quốc gia TP. Hồ Chí Minh (VNU-HCM)-Vietnam National University, Ho Chi Minh City / Đại học Quốc gia TP. Hồ Chí Minh (VNU-HCM) | PADDI | Laboratoire d'étude des transferts en hydrologie et environnement (LTHE) ; Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG) ; Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]) | Istanbul Technical University (ITÜ) | Istanbul Water and Sewerage Administration | Akute Geo-Resource Ltd | Hanorado Global Solutions Nig Ltd | Watershed Associates Ltd | Bureau of Sanitation of the City of Los Angeles | Carollo Engineers | WaterLinks | CONAGUA | TechVision Security Consultants Pvt Ltd | Mumbai | New York City Department of Environmental Protection (NYC DEP) | Laboratoire Eau Environnement et Systèmes Urbains (LEESU) ; AgroParisTech-École nationale des ponts et chaussées (ENPC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12) | AgroParisTech | K-water | Tokyo Metropolitan Waterworks Bureau | Tokyo Metropolitan Sewerage Bureau | Alice Aureli, UNESCO-PHI | Jean-Claude Deutsch, ARCEAU-IdF | François Prévot, ARCEAU-IdF | Irina Severin, ARCEAU-IdF | Jean-Pierre Tabuchi, SIAAP | Bruno Tassin, ARCEAU-IdF | Géraldine Izambart, ARCEAU-IdF | Blanca Jiménez-Cisneros, UNESCO-PHI | Cléo Lossouarn, SIAAP | Ismael Madrigal, UNESCO-PHI | Alexandros Makarigakis, UNESCO-PHI | Bruno Nguyen, UNESCO-PHI
International audience | Este libro emana de la Conferencia Internacional "Agua, Megaciudades y Cambio Global", celebrada en París en diciembre de 2015 en ocasión de la COP21 y contiene los resúmenes de monografías de 15 megaciudades: Beijing, Buenos Aires, Chicago, Ciudad Ho Chi Minh, Estambul, Lagos, Londres, Los Ángeles, Manila, México, Mumbai, Nueva York, París, Seúl y Tokio.
اظهر المزيد [+] اقل [-]The natural resources of Agua Hedionda Lagoon النص الكامل
1976
Bradshaw, Jack | Browning, Bruce M. | Smith, Kent | Speth, John
This report has been prepared under contract to and fully funded by the Office of Biological Services of the U. S. Fish and Wildlife Service. The goals and purpose of this federal office are to review the impact on fish and wildlife resources of land, mineral and water development practices, such as offshore oil and gas exploration, development and production; construction of inshore pipeline canals and refineries; power plant construction/operation and urban development. This report, and five other southern California reports, covering Carpinteria Marsh (Santa Barbara County), Anaheim Bay-Huntington Harbor (Orange County), Mugu Lagoon (Ventura County), the Northern Santa Barbara County CoastalWetlands, and the Nipomo Dunes and Wetlands (San Luis Obispo County), are scheduled to be part of the Department's "Coastal Wetland Series" (see inside front cover). (154 pp.)
اظهر المزيد [+] اقل [-]