Getting Infrastructure Priorities Right in Post-Conflict Reconstruction

infrastructure, conflict, reconstruction, water

Consumer Preferences for Water Supply? An Application of Choice Models to Urban India

Water supply, Consumer preferences, Discrete choice, Lexicographic preferences

Millennium Development Goal 7: An Assessment of Progress With Respect to Water and Sanitation: Legacy, Synergy, Complacency or Policy?

MDGs, water, sanitation, access

Water 'Scarcity' in Chennai, India: Institutions, Entitlements and Aspects of Inequality in Access

Utilities, Water supply, Entitlements, Regulation, Asia

Financing the Provision of Global Public Goods

global public goods, international organizations, aid, externality, Global Environment Facility

Every drop counts: Assessing aid for water and sanitation

Water and sanitation sectors have been the 'natural' subjects of aid for several decades. However, these sectors also were among those most affected by changes in aid approaches and tools. The aim of this paper is to capture some of the complexity in assessing impact and effectiveness of aid in water and sanitation sector. Notwithstanding this complexity, the paper aims to explore some of the key factors that influence successful and effective use of aid. Though the overall magnitude of aid to water supply and sanitation activities has increased significantly, it is not easy to connect aid with specific outcomes such as reduction on mortality due to waterborne diseases or number of people with improved access. Though water supply and sanitation sector attracts about 7.4 billion dollars of aid this is perhaps smaller than what is needed to achieve the Millennium Development Goal sanitation target let alone fully realizing the human right to water and sanitation. The paper discusses some key challenges in making aid in water supply and sanitation more effective. Donors need to be aware of the 'accountability paradox' by which a demand for greater accountability can push investments away from much needed but difficult to measure institutional reforms towards easily measurable but perhaps somewhat less effective physical infrastructure. As the 'low hanging fruit' have been taken, making further progress may require the development of appropriate tools so that aid is used more often in effectively catalysing a range of institutions in finding solutions and less in terms of directly investing in delivery of services

Climatic and soil factors explain the two-dimensional spectrum of global plant trait variation

Plant functional traits can predict community assembly and ecosystem functioning and are thus widely used in global models of vegetation dynamics and land–climate feedbacks. Still, we lack a global understanding of how land and climate affect plant traits. A previous global analysis of six traits observed two main axes of variation: (1) size variation at the organ and plant level and (2) leaf economics balancing leaf persistence against plant growth potential. The orthogonality of these two axes suggests they are differently influenced by environmental drivers. We find that these axes persist in a global dataset of 17 traits across more than 20,000 species. We find a dominant joint effect of climate and soil on trait variation. Additional independent climate effects are also observed across most traits, whereas independent soil effects are almost exclusively observed for economics traits. Variation in size traits correlates well with a latitudinal gradient related to water or energy limitation. In contrast, variation in economics traits is better explained by interactions of climate with soil fertility. These findings have the potential to improve our understanding of biodiversity patterns and our predictions of climate change impacts on biogeochemical cycles

DNA from Plant leaf Extracts: A Review for Emerging and Promising Novel Green Corrosion Inhibitors.

With growing global awareness and concern for environmental protection through the use of less hazardous and environmentally-friendly extracts of plant origin, there has been a plethora of green corrosion inhibitors research with far reaching contributions to the science of corrosion prevention and control. Attention has increasingly turned towards green corrosion inhibitors, compounds of natural origin with anti-oxidant activity towards metals and their alloys. Green inhibitors have been investigated for their corrosion and adsorption properties with good results. The findings from these research works provide evidence of the adsorption behavior of green inhibitors which was confirmed by the adsorption isotherms that were proposed. Adsorption is the first step of any surface reaction and since corrosion is a surface phenomenon the effectiveness of green corrosion inhibitors is related to their ability to adsorb on metal surfaces. This review proposes the potential of plant dna as an emerging and promising novel inhibitor for mild steel. It begins with a list of plants that have been used in studies to determine corrosion inhibition properties and moves on to establish the adsorption behavior of bio macromolecules; protein, polysaccharides (chitosan) and dna. It reviews studies and investigation of dna interaction and adsorption on inorganic surfaces before focusing on the use of salmon (fish) sperm dna and calf thymus gland dna as green corrosion inhibitors for mild steel. It concludes that plant dna is a promising candidate for green corrosion inhibitor given the similarity between the plant and animal dna structure and function, and the fact that the use of plant is more environmentally sustainable than animal-based produc

TRY plant trait database – enhanced coverage and open access

Plant traits—the morphological, anatomical, physiological, biochemical and phenological characteristics of plants—determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people. Plant trait data thus represent the basis for a vast area of research spanning from evolutionary biology, community and functional ecology, to biodiversity conservation, ecosystem and landscape management, restoration, biogeography and earth system modelling. Since its foundation in 2007, the TRY database of plant traits has grown continuously. It now provides unprecedented data coverage under an open access data policy and is the main plant trait database used by the research community worldwide. Increasingly, the TRY database also supports new frontiers of trait‐based plant research, including the identification of data gaps and the subsequent mobilization or measurement of new data. To support this development, in this article we evaluate the extent of the trait data compiled in TRY and analyse emerging patterns of data coverage and representativeness. Best species coverage is achieved for categorical traits—almost complete coverage for ‘plant growth form’. However, most traits relevant for ecology and vegetation modelling are characterized by continuous intraspecific variation and trait–environmental relationships. These traits have to be measured on individual plants in their respective environment. Despite unprecedented data coverage, we observe a humbling lack of completeness and representativeness of these continuous traits in many aspects. We, therefore, conclude that reducing data gaps and biases in the TRY database remains a key challenge and requires a coordinated approach to data mobilization and trait measurements. This can only be achieved in collaboration with other initiatives

Erratum: "A Gravitational-wave Measurement of the Hubble Constant Following the Second Observing Run of Advanced LIGO and Virgo" (2021, ApJ, 909, 218)

[no abstract available