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| Registros recuperados: 147 | |
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| Morales Rivera, Aurelio. |
| Se estudió la variabilidad en rendimiento de semilla y sus componentes, y producción de biomasa aérea en un grupo de variedades de frijol de color negro, nativas del sur de Veracruz y un grupo del tipo “Flor de Mayo”, introducidas del Altiplano, y la región central de México, en condiciones de acidez edáfica y sequía terminal en el Municipio de Juan Rodríguez Clara, Veracruz, en el ciclo otoño-invierno 2012-13. Se incluyeron ocho variedades comerciales liberadas por el INIFAP, un criollo de Michoacán, México, tres variedades criollas con testa de color negro y Negro Michigan. Se utilizó un diseño de bloques completos al azar con cuatro repeticiones; la unidad experimental consistió de cinco surcos de 5 m de longitud y 0.8 m de ancho. Se aplicó una dosis de... |
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Palavras-chave: Phaseolus vulgaris L.; Acidez; Sequía; Rendimiento de semilla; Soil acidity; Drought; Seed yield; Genética; Maestría. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2225 |
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| Arellano Ojeda, Carlos. |
| Con el objetivo de identificar la sensibilidad de variables fisiológicas y de crecimiento en plántulas de P. armeniaca, se realizó un experimento bajo cubierta durante el periodo abril-julio del 2013 en Montecillo, Texcoco, Estado de México. Se utilizaron plántulas de siete meses de edad obtenidas a partir de colectas realizadas en la localidad de San Juan Tetla, San Lorenzo Chiautzingo, Puebla. Se estableció un diseño experimental completamente al azar con dos tratamientos y 15 repeticiones, el primero consistió en la aplicación de ciclos repetidos de riego-sequía y el segundo, en la aplicación de riegos frecuentes manteniendo el suelo con valores cercanos a la capacidad de campo (tratamiento testigo). Cada tratamiento se conformó de 75 individuos... |
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Palavras-chave: Chabacano; Sequía; Humedad en suelo; Apricot; Drought; Soil moisture; Fruticultura; Maestría. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2373 |
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| Welsh, Lisa W.; Department of Environment and Society, Utah State University; lisa03@gmail.com; Endter-Wada, Joanna; Department of Environment and Society, Utah State University; Ecology Center, Utah State University; Department of Watershed Sciences, Utah State University; joanna.endter-wada@usu.edu; Downard, Rebekah; Ecology Center, Utah State University; Department of Watershed Sciences, Utah State University; rdownard8@gmail.com; Kettenring, Karin M.; Ecology Center, Utah State University; Department of Watershed Sciences, Utah State University; karin.kettenring@usu.edu. |
| Tipo: Peer-Reviewed Insight |
Palavras-chave: Adaptive capacity; Drought; Social-ecological systems (SES); Vulnerability; Water resources management; Wetlands. |
| Ano: 2013 |
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| Krysanova, Valentina; Potsdam Institute for Climate Impact Research; krysanova@pik-potsdam.de; Buiteveld, Hendrik; Center for Water Management; h.buiteveld@riza.rws.minvenw.nl; Haase, Dagmar; UFZ - Helmholtz Centre for Environmental Research; dagmar.haase@ufz.de; Hattermann, Fred F; Potsdam Institute for Climate Impact Research; hattermann@pik-potsdam.de; van Niekerk, Kate; Institute of Natural Resources; VanNiekerk@ukzn.ac.za; Roest, Koen; Alterra - Wageningen University and Research Centre; Koen.Roest@wur.nl. |
| Climatic hazards such as floods and droughts have always been a primary matter of concern for human populations. Severe floods damage settlements, transport networks, and arable land. Although devastating droughts are harmful primarily for agriculture and terrestrial ecosystems, they can also lead to local water supply shortages. Despite significant achievements in science and technology and success stories in environmental management in the 20th century, people still continue to suffer the consequences of climate hazards worldwide. This paper provides an overview of existing practices for coping with floods and droughts, compares strategies in different river basins, and outlines the areas that need improvement. First, the existing protection measures and... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Amudarya; Climate change; Climatic hazards; Coping strategy; Drought; Elbe; Flood; Guadiana; Nile; Orange; Rhine; Tisza; Water resources management. |
| Ano: 2008 |
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| Camp, Edward V.; Fisheries and Aquatic Sciences Program, School of Forest Resources and Conservation, University of Florida; edvcamp@ufl.edu; Pine III, William E.; Department of Wildlife Ecology and Conservation, University of Florida; billpine@ufl.edu; Havens, Karl; Florida Sea Grant College Program and School of Forest Resources and Conservation, University of Florida; khavens@ufl.edu; Kane, Andrew S.; Department of Environmental and Global Health, College of Public Health and Health Professions, University of Florida; Aquatic Pathobiology Laboratories, Emerging Pathogens Institute, University of Florida; Center for Human and Environmental Toxicology, University of Florida; kane@ufl.edu; Walters, Carl J.; Fisheries Centre, University of British Columbia; c.walters@fisheries.ubc.ca; Irani, Tracy; Family, Youth and Community Sciences Department, University of Florida; Institute of Food and Agricultural Sciences, University of Florida; irani@ufl.edu; Lindsey, Angela B; Institute of Food and Agricultural Sciences, University of Florida; Family, Youth and Community Sciences Department and Center of Public Issues Education, University of Florida; ablindsey@ufl.edu; Morris, Jr., J. Glenn; Emerging Pathogens Institute, University of Florida; College of Medicine, University of Florida; JGMorris@epi.ufl.edu. |
| Diagnosing causal factors of change at the ecosystem level is challenging because multiple drivers often interact at various spatial and temporal scales. We employ an integrated natural and social science approach to assess potential mechanisms leading to the collapse of an estuarine social-ecological system, and recommend future paths to increased system resilience. Our case study is the collapse of the eastern oyster (Crassostrea virginica) fishery in Apalachicola Bay, Florida, USA, and the associated impacts on local resource dependent communities. The oyster fishery collapse is the most recent in a series of environmental stressors to this region, which have included hurricanes and tropical storms, drought, and the Deepwater Horizon oil spill. We found... |
| Tipo: Peer-Reviewed Insight |
Palavras-chave: Climate change; Community resilience; Drought; Estuaries; Oyster fishery. |
| Ano: 2015 |
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| Leclerc, Christian; CIRAD, UMR AGAP, Montpellier, France; christian.leclerc@cirad.fr; Mwongera, Caroline ; Montpellier SupAgro, Montpellier, France; carolmwongera@yahoo.com. |
| In studying indigenous climate knowledge, two approaches can be envisioned. In the first, traditional knowledge is a cultural built-in object; conceived as a whole, its relevance can be assessed by referring to other cultural, economic, or technical components at work within an indigenous society. In the second, the accuracy of indigenous climate knowledge is assessed with western science knowledge used as an external reference. However, assessing the accuracy of indigenous climate knowledge remains a largely untapped area. We aim to show how accurate the culturally built indigenous climate knowledge of extreme climatic events is, and how amenable it is to fuzzy logic. A retrospective survey was carried out individually and randomly among 195 Eastern... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Climate change; Drought; Ecological anthropology; Fuzzy logic; Kenya; Meru; Traditional ecological knowledge. |
| Ano: 2013 |
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| Silvopastoral systems of the Swiss Jura Mountains serve as a traditional source of forage and timber in the subalpine vegetation belt, but their vulnerability to land use and climate change puts their future sustainability at stake. We coupled experimental and modeling approaches to assess the impact of climate change on the pasture-woodland landscape. We drew conclusions on the resistance potential of wooded pastures with different management intensities by sampling along a canopy cover gradient. This gradient spanned from unwooded pastures associated with intensive farming to densely wooded pastures associated with extensive farming. Transplanted mesocosms of these ecosystems placed at warmer and drier conditions provided experimental evidence that... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Aboveground biomass; Drought; Ecotone; Grassland; Pasture; Silvopastoral system; Subalpine; Transplantation; Woodland. |
| Ano: 2013 |
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| Climatic events can have disastrous consequences on rural livelihoods, which rely mainly on agriculture and natural resources. The way households and communities respond to climatic shocks depends on their available resources. We formulated that education is a human capital asset that can increase coping abilities in difficult times because education improves access to both social and economic resources. Based on the Thai government surveys of the living conditions and life quality of 68,343 rural villages for the years 2009 and 2011, we investigated the impacts of floods and droughts in 2010 on community welfare, i.e., consumption and income in 2011 at the village level. Using difference-in-difference methods, we analyzed how differential demographic... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Consumption and income smoothing; Drought; Economic vulnerability; Education; Flood; Thailand; Welfare. |
| Ano: 2013 |
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| New challenges posed by global environmental change have motivated scholars to pay growing attention to historical long-term strategies to deal with climate extremes. We aim to understand long-term trends in community responses to cope with droughts, to explain how many preindustrial societies coevolved with local hydro-climatic dynamics and coped with climate extremes over time. The specific goals of this work are: (1) to analyze how local communities experienced droughts over long periods of time and (2) to document the spectrum of recorded community responses to drought. Our research covers over one century (1605-1710) of responses to drought in the community of Terrassa, Barcelona, Spain. Data were collected through archival research. We reviewed and... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Adaptation; Drought; Early modern period; Environmental history. |
| Ano: 2016 |
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| Fraser, Evan D. G.; Department of Geography, University of Guelph; University of Leeds; frasere@uoguelph.ca; Dougill, Andrew J; School of Earth and Environment, University of Leeds; a.j.dougill@leeds.ac.uk; Hubacek, Klaus; School of Earth and Environment, University of Leeds; hubacek@env.leeds.ac.uk; Quinn, Claire H.; School of Earth and Environment, University of Leeds; C.H.Quinn@leeds.ac.uk; Sendzimir, Jan; International Institute of Applied Systems Analysis (IIASA); sendzim@iiasa.ac.at; Termansen, Mette; School of Earth and Environment, University of Leeds; mette@env.leeds.ac.uk. |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Adaptability; Climate change; Drought; Food security; Livelihoods; Vulnerability. |
| Ano: 2011 |
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| Kuhn, Arnim; Institute for Food and Resource Economics, University of Bonn; arnim.kuhn@ilr.uni-bonn.de; Naumann, Christiane; Department of Cultural and Social Anthropology, University of Cologne; christiane.naumann@uni-koeln.de; Rasch, Sebastian; Institute for Food and Resource Economics, University of Bonn; sebastian.rasch@ilr.uni-bonn.de; Sandhage-Hofmann, Alexandra; Soil Science and Soil Ecology Group, Institute of Crop Science and Resource Conservation, University of Bonn; sandhage@uni-bonn.de; Amelung, Wulf; Soil Science and Soil Ecology Group, Institute of Crop Science and Resource Conservation, University of Bonn; wulf.amelung@uni-bonn.de; Jordaan, Jorrie; Department of Plant Production, Soil Science and Agricultural Engineering, University of Limpopo; jorrie.jj@gmail.com; Du Preez, Chris C.; Department of Soil, Crop and Climate Sciences, University of the Free State; dpreezcc@ufs.ac.za; Bollig, Michael; Department of Cultural and Social Anthropology, University of Cologne; M.Bollig@verw.uni-koeln.de. |
| In the past decades, social-ecological systems (SESs) worldwide have undergone dramatic transformations with often detrimental consequences for livelihoods. Although resilience thinking offers promising conceptual frameworks to understand SES transformations, empirical resilience assessments of real-world SESs are still rare because SES complexity requires integrating knowledge, theories, and approaches from different disciplines. Taking up this challenge, we empirically assess the resilience of a South African pastoral SES to drought using various methods from natural and social sciences. In the ecological subsystem, we analyze rangelands’ ability to buffer drought effects on forage provision, using soil and vegetation indicators. In the social... |
| Tipo: NON-REFEREED |
Palavras-chave: Drought; Empirical resilience assessment; Globalization; Institutions; Monetary resources; Pastoralism; Rangelands; Social-ecological system. |
| Ano: 2016 |
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| Ma,Yuan-Yuan; Guo,Xiu-Lin; Liu,Bin-Hui; Liu,Zi-Hui; Shao,Hong-Bo. |
| The changes of cell ultra structure as well as Ca2+ homeostasis involved in the drought-induced maize leaf senescence was investigated. Meanwhile, many indicatives of leaf senescence including thiobarbituric acid reactive substance (MDA), electrolyte leakage (EL), and chlorophyll along with soluble proteins were also detected during the process. The Polyethylene glycol6000(PEG6000)-incubated detached leaves showed a slight increase in the MDA content and electrolyte leakage during the first 30 min of our detection, which was corresponded to an unobvious alteration of the cell ultrastructure. Other typical senescence parameters measured in whole leaf exhibited a moderate elevation as well. Thereafter, however, the EL and MDA rose to a large extent, which... |
| Tipo: Journal article |
Palavras-chave: Ca2+ homeostasis; Drought; Leaf senescence; Maize; Organelle ultrastructure; Signal transduction. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000300004 |
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| Registros recuperados: 147 | |
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