Overcoming data scarcity in earth science.

The Data Scarcity problem is repeatedly encountered in environmental research. This may induce an inadequate representation of the response?s complexity in any environmental system to any input/change (natural and human-induced). In such a case, before getting engaged with new expensive studies to gather and analyze additional data, it is reasonable first to understand what enhancement in estimates of system performance would result if all the available data could be well exploited. The purpose of this Special Issue, "Overcoming Data Scarcity in Earth Science" in the Data journal, is to draw attention to the body of knowledge that leads at improving the capacity of exploiting the available data to better represent, understand, predict, and manage the behavior of environmental systems at meaningful space-time scales. This Special Issue contains six publications (three research articles, one review, and two data descriptors) covering a wide range of environmental fields: geophysics, meteorology/climatology, ecology, water quality, and hydrology

Impact of water scarcity on food security at micro level in Pakistan

Pakistan is confronting the problem of water scarcity which is rendering an adverse impact on food security. The study examines the impact of water scarcity on food security in an era of climate change. It further focuses on projecting the future trends of water and food stock. The research effort probes the links among water scarcity, climate change, food security, water security, food inflation, poverty and management of water resources. Data on food security was collected from the FSA (Food Security analysis) of the Sustainable development Policy institute (SDPI) and Food insecurity and Vulnerability Information mapping system (FIVIMS). Logistic equations have been employed to catch the effect of water scarcity on three components of food security separately. In fact, the present study develops a series of models that captures the impact of water scarcity on the components of food security at Micro level. The models have traced an adverse impact of water scarcity water scarcity on food security at Micro level. The findings so obtained may help in proposing the policy guidelines for overcoming water scarcity and handling with food insecurity caused by water scarcity and other factors.Water scarcity, Water supply, Water Demand, Food security, Micro level, Logistic regression

Impact of water scarcity on food security at macro level in Pakistan

Pakistan is confronting the problem of water scarcity which is rendering an adverse impact on food security. The study examines the impact of water scarcity on food security in an era of climate change. It further focuses on projecting the future trends of water and food stock. The research effort probes the links among water scarcity, climate change, food security, water security, food inflation, poverty and management of water resources. Data on food security was collected from the FSA (Food Security analysis) of the Sustainable development Policy institute (SDPI) and Food insecurity and Vulnerability Information mapping system (FIVIMS). Logistic regression equations have been employed to catch the effect of water scarcity on three components of food security separately. In fact, the present study develops a series of models that captures the impact of water scarcity on the components of food security at Macro level.The models has traced an adverse impact of water scarcity water scarcity on food security at macro levels. The findings so obtained may help in proposing the policy guidelines for overcoming water scarcity and handling with food insecurity caused by water scarcity and other factors.Water scarcity, Water supply, Water demand, Food security, Macro level

Impact of water scarcity on food security at meso level in Pakistan

Pakistan is confronting the problem of water scarcity which is rendering an adverse impact on food security. The study examines the impact of water scarcity on food security in an era of climate change. It further focuses on projecting the future trends of water and food stock. The research effort probes the links among water scarcity, climate change, food security, water security, food inflation, poverty and management of water resources. Data on food security was collected from the FSA (Food Security analysis) of the Sustainable development Policy institute (SDPI) and Food insecurity and Vulnerability Information mapping system (FIVIMS). Simultaneous, structural and reduced form equations have been employed to catch the effect of water scarcity on three components of food security separately. In fact, the present study develops a series of models that captures the impact of water scarcity on the components of food security at Meso level. The models have traced an adverse impact of water scarcity water scarcity on food security at Meso levels. The findings so obtained may help in proposing the policy guidelines for overcoming water scarcity and handling with food insecurity caused by water scarcity and other factors.Water scarcity, Water supply, Water Demand, Food security, Meso level, Simultaneous equations

The Current Adoption of Dry-Direct Seeding Rice (DDSR) in Thailand and Lessons Learned for Mekong River Delta of Vietnam

The paper documents the joint study trip, organized by CCAFS Southeast Asia for Vietnamese rice researchers, extension workers, as well as local decision makers, to visit Thailand in April 2018. The goal of the study trip was to observe and learn the experience of Thai farmers on the large-scale adoption process of dry-direct seeding rice (DDSR), a viable alternative to address regional scarcity of fresh water in irrigation caused by the drought and salinity intrusion in the Mekong River Delta

Food security for sub-Saharan Africa: does water scarcity limit the options?

Future food security can be achieved only by delivering substantial increases in agricultural production, but this has important implications for water availability. Water scarcity is not currently a major issue in sub-Saharan Africa, but it would be a mistake to neglect this issue. It would be a mistake also to assume that only plans for irrigated agriculture are affected. It should be recognised that a land-use decision is also a water-use decision. A plan based on improving rain-fed agriculture through adoption of measures to make better use of rainfall brings trade-offs in that there may be less runoff to satisfy the water needs of downstream users and environmental functions. Planning for future food security requires integrated analysis of land-use and water resources issues.food security, water scarcity, irrigation, agriculture, Africa, Resource /Energy Economics and Policy,

Blue-Green Coalitions: Fighting for Safe Workplaces and Healthy Communities

[Excerpt] My goal in this book is to examine the formation of labor-environmental alliances that focus on health issues. Health concerns are increasingly a common ground on which blue-green coalitions are developing across the United States. Activists from both movements often see health issues through different lenses, which lends a particular slant to how they approach potential solutions for reducing exposures to toxics. The coalition framework emphasizes the fundamental link between occupational and environmental health, providing an internal cohesion and a politically persuasive agenda based on the centrality of health-related issues. By engaging labor and environmental activists in a common dialogue regarding the need for cooperative action to reduce the risks of community and workplace exposures, blue-green coalitions are creating new opportunities for progressive social change

Mass extinctions and supernova explosions

A nearby supernova (SN) explosion could have negatively influenced life on Earth, maybe even been responsible for mass extinctions. Mass extinction poses a significant extinction of numerous species on Earth, as recorded in the paleontologic, paleoclimatic, and geological record of our planet. Depending on the distance between the Sun and the SN, different types of threats have to be considered, such as ozone depletion on Earth, causing increased exposure to the Sun's ultraviolet radiation, or the direct exposure of lethal x-rays. Another indirect effect is cloud formation, induced by cosmic rays in the atmosphere which result in a drop in the Earth's temperature, causing major glaciations of the Earth. The discovery of highly intensive gamma ray bursts (GRBs), which could be connected to SNe, initiated further discussions on possible life-threatening events in Earth's history. The probability that GRBs hit the Earth is very low. Nevertheless, a past interaction of Earth with GRBs and/or SNe cannot be excluded and might even have been responsible for past extinction events.Comment: Chapter for forthcoming book: Handbook of Supernovae, P. Murdin and A. Alsabeti (eds.), Springer International Publishing (in press

Local Knowledge and Natural Resource Management in a Peasant Farming Community Facing Rapid Change: A Critical Examination

Environmental degradation is a major global problem, and addressing it is a key Millennium Development Goal. Its impacts are not just environmental (e.g., species loss), but also economic (e.g., reduced agricultural productivity), with degradation increasingly cited as a key cause of rural poverty in the developing world. The degradation literature typically emphasises common property or 'open access' natural resources, and how perverse incentives or missing institutions lead optimising private actors to degrade them. By contrast, the present paper considers degradation occurring on private farms in peasant communities. This is a critical yet delicate issue, given the poverty of such areas and questions about the role of farmers in either degrading or regenerating rural lands The paper examines natural resource management by peasant farmers in rural Tanzania. Its key concern is how the local knowledge informing farmers' management decisions adapts to challenges associated with environmental degradation and market liberalisation. Given their poverty, this question could have direct implications for the capacity of households to successfully meet their livelihood needs. Based on fresh empirical data, the paper finds that differential farmer knowledge helps explain the large differences in how households and communities respond to the degradation challenge. The implication is that some farmers adapt more effectively to emerging challenges than others, despite all being rational, optimising agents who follow the management strategies they deem best. The paper thus provides a critique of local knowledge, implying that some farmers experience adaptation slippages while others race ahead with effective adaptations. The paper speaks to the chronic poverty that plagues many rural communities in the developing world. Specifically, it helps explain the failure of proven 'sustainable agriculture' technologies to disseminate readily beyond an initial group of early innovators, and suggests a means to help 'scale up' local successes. Its key policy implication is to inform improved capacity building for peasant communities.