Poverty in America: Trends and Explanations

Despite robust growth in real per capita GDP over the last three decades, the U.S. poverty rate has changed very little. In an effort to better understand this disconnect, we document and quantify the relationship between poverty and four different factors that may affect poverty and its evolution over time: labor market opportunities, family structure, anti-poverty programs, and immigration. We find that the relationship between the macro-economy and poverty has weakened over time. Nevertheless, changes in labor market opportunities predict changes in the poverty rate rather well. We also find that changes in female labor supply should have reduced poverty, but was counteracted by an increase in the rate of female headship. Changes in the number and composition of immigrants and changes in the generosity of anti-poverty programs seem to have had little effect.

How CESR informs student research:The engaging in critical business enquiry module at UWE

This article from the July 2013 edition of the CESR review outlines the objectives behind the UWE UG1 module Engaging in Critical Business Enquiry

Is a WIC Start a Better Start? Evaluating WIC’s Impact on Infant Health Using Program Introduction

The goal of federal food and nutrition programs in the United States is to improve the nutritional well-being and health of low income families. A large body of literature evaluates the extent to which the Supplemental Program for Women Infants and Children (WIC) has accomplished this goal, but most studies have been based on research designs that compare program participants to non-participants. If selection into these programs is non-random then such comparisons will lead to biased estimates of the program’s true effects. In this study we use the rollout of the WIC program across counties to estimate the impact of the program on infant health. We find that the implementation of WIC lead to an increase in average birthweight and a decrease in the fraction of births that are classified as low birthweight. We find no evidence that these estimates are driven by changes in fertility. Back-of-the-envelope calculations suggest that the initiation of WIC lead to a ten percent increase in the birthweight of infants born to participating mothers.

Beyond the 'Field of Dreams' model in smallholder forestry: building viable timber value chains for smallholder tree growers in developing countries

Many smallholder tree growers in developing countries and those advising them, hold a view that if they plant trees a market will materialize when the time is right. However, despite strong international demand for timber and potential for smallholders to supply this demand, this ‘Field of Dreams’ approach, i.e. if you grow it, buyers will come, is not generally a sound strategy. In this study, we aimed to identify the conditions that enable the development of viable timber value chains around smallholder tree growers in developing countries. We reviewed literature on the integration of small-scale producers into value chains, smallholder tree growing, and smallholder commercial forestry to identify conditions, and used four case studies in the Asia-Pacific Region to understand how these influence outcomes for smallholder tree growers in different settings. This analysis provided a basis for recommendations for policymakers and advising agencies on how to support timber value chains for smallholder tree growers. These included deeper understanding of biophysical suitability of locations for tree growing, smallholder capabilities and interests, and provision of clear land tenure, infrastructure, and streamlined regulations sympathetic to smallscale timber operations. Tree growing can generate financial value for smallholders in regions with high human population density, quality road networks and proximity to processing markets and ports. Careful policy design is required to make it ‘fit for purpose’ at local levels, as conditions vary widely even within a single country. This can identify catalytic interventions and work with existing or near-term market drivers and simplified regulations in the value chain to generate benefits for smallholders

Evolutionary comparisons of chelonid alphaherpesvirus 5 (ChHV5) genomes from fibropapillomatosis-afflicted green (chelonia mydas), Ooive ridley (lepidochelys olivacea) and kemp’s ridley (lepidochelys kempii) sea turtles

peer-reviewedThe spreading global sea turtle fibropapillomatosis (FP) epizootic is threatening some of Earth’s ancient reptiles, adding to the plethora of threats faced by these keystone species. Understanding this neoplastic disease and its likely aetiological pathogen, chelonid alphaherpesvirus 5 (ChHV5), is crucial to understand how the disease impacts sea turtle populations and species and the future trajectory of disease incidence. We generated 20 ChHV5 genomes, from three sea turtle species, to better understand the viral variant diversity and gene evolution of this oncogenic virus. We revealed previously underappreciated genetic diversity within this virus (with an average of 2035 single nucleotide polymorphisms (SNPs), 1.54% of the ChHV5 genome) and identified genes under the strongest evolutionary pressure. Furthermore, we investigated the phylogeny of ChHV5 at both genome and gene level, confirming the propensity of the virus to be interspecific, with related variants able to infect multiple sea turtle species. Finally, we revealed unexpected intra-host diversity, with up to 0.15% of the viral genome varying between ChHV5 genomes isolated from different tumours concurrently arising within the same individual. These findings offer important insights into ChHV5 biology and provide genomic resources for this oncogenic viru

A specific group of genes respond to cold dehydration stress in cut Alstroemeria flowers whereas ambient dehydration stress accelerates developmental senescence expression patterns

Petal development and senescence entails a normally irreversible process. It starts with petal expansion and pigment production, and ends with nutrient remobilization and ultimately cell death. In many species this is accompanied by petal abscission. Post-harvest stress is an important factor in limiting petal longevity in cut flowers and accelerates some of the processes of senescence such as petal wilting and abscission. However, some of the effects of moderate stress in young flowers are reversible with appropriate treatments. Transcriptomic studies have shown that distinct gene sets are expressed during petal development and senescence. Despite this, the overlap in gene expression between developmental and stress-induced senescence in petals has not been fully investigated in any species. Here a custom-made cDNA microarray from Alstroemeria petals was used to investigate the overlap in gene expression between developmental changes (bud to first sign of senescence) and typical post-harvest stress treatments. Young flowers were stressed by cold or ambient temperatures without water followed by a recovery and rehydration period. Stressed flowers were still at the bud stage after stress treatments. Microarray analysis showed that ambient dehydration stress accelerates many of the changes in gene expression patterns that would normally occur during developmental senescence. However, a higher proportion of gene expression changes in response to cold stress were specific to this stimulus and not senescence related. The expression of 21 transcription factors was characterized, showing that overlapping sets of regulatory genes are activated during developmental senescence and by different stresses