Three in Ten Rural and Urban Medicaid Recipients May Be Affected by Potential Work Requirements

In this fact sheet, authors Andrew Schaefer and Jessica Carson explore whether rural and urban Medicaid recipients would be differentially affected by a work requirement. They focus on Medicaid recipients through a rural/urban lens because rural adults differ from their urban counterparts on a host of demographic characteristics. They report that about three in ten Medicaid recipients could be affected by a work requirement, a share that is similar in rural and urban places. Among Medicaid recipients potentially affected by a work requirement, the majority worked at least part of the previous year or were motivated to work but could not find a job, a share that is slightly higher in rural places than in urban. The especially high share of those already working or looking for work in rural places may warrant additional consideration from legislators representing rural areas. In both rural and urban places, legislators should consider whether the consequences to families losing health insurance coverage outweigh the relative benefits of enforcing work requirements

Treefall Gaps and the Maintenance of Species Diversity in a Tropical Forest

The maintenance of species diversity by treefall gaps is a long‐standing paradigm in forest ecology. Gaps are presumed to provide an environment in which tree species of differing competitive abilities partition heterogeneous resources. The empirical evidence to support this paradigm, however, remains scarce, and some recent studies even suggest that gaps do not maintain the diversity of shade‐tolerant species. Although there is evidence that gaps maintain the diversity of pioneer trees, most of this evidence comes from studies that did not make comparisons between gaps and intact forest sites (controls). Further, nearly all studies on the maintenance of diversity by gaps have ignored lianas, an important component of both old‐world and neotropical forests. We tested the hypothesis that treefall gaps maintain shade‐tolerant tree, pioneer tree, and liana species diversity in an old‐growth forest on Barro Colorado Island (BCI), Panama. We compared the density and species richness of these guilds between paired gap and non‐gap sites on both a per‐area and a per‐individual (per capita) basis. We found no difference in shade‐tolerant tree density and species richness between the gap and non‐gap sites. Both pioneer tree and liana density and species richness, however, were significantly higher in the gap than in the non‐gap sites on both a per‐area and a per‐individual basis. These results suggest that gaps maintain liana species diversity and that this effect is not merely a consequence of increased density. Furthermore, our data confirm the long‐held belief that gaps maintain pioneer tree species diversity. Because lianas and pioneer trees combined account for ∼43% of the woody plant species on BCI, and in other forests, our results are likely to be broadly applicable and suggest that gaps play a strong role in the maintenance of woody species diversity

The NASA firefighter's breathing system program

The research is reported in the development of a firefighter's breathing system (FBS) to satisfy the operational requirements of fire departments while remaining within their cost constraints. System definition for the FBS is discussed, and the program status is reported. It is concluded that the most difficult problem in the FBS Program is the achievement of widespread fire department acceptance of the system

A Search for Optical Variability of Type 2 Quasars in SDSS Stripe 82

Hundreds of Type 2 quasars have been identified in Sloan Digital Sky Survey (SDSS) data, and there is substantial evidence that they are generally galaxies with highly obscured central engines, in accord with unified models for active galactic nuclei (AGNs). A straightforward expectation of unified models is that highly obscured Type 2 AGNs should show little or no optical variability on timescales of days to years. As a test of this prediction, we have carried out a search for variability in Type 2 quasars in SDSS Stripe 82 using difference-imaging photometry. Starting with the Type 2 AGN catalogs of Zakamska et al. (2003) and Reyes et al. (2008), we find evidence of significant g-band variability in 17 out of 173 objects for which light curves could be measured from the Stripe 82 data. To determine the nature of this variability, we obtained new Keck spectropolarimetry observations for seven of these variable AGNs. The Keck data show that these objects have low continuum polarizations (p<~1% in most cases) and all seven have broad H-alpha and/or MgII emission lines in their total (unpolarized) spectra, indicating that they should actually be classified as Type 1 AGNs. We conclude that the primary reason variability is found in the SDSS-selected Type 2 AGN samples is that these samples contain a small fraction of Type 1 AGNs as contaminants, and it is not necessary to invoke more exotic possible explanations such as a population of "naked" or unobscured Type 2 quasars. Aside from misclassified Type 1 objects, the Type 2 quasars do not generally show detectable optical variability over the duration of the Stripe 82 survey.Comment: 14 pages, 8 figures. Accepted for publication in A

Cause for Optimism? Child Poverty Declines for the First Time Since Before the Great Recession

New data released on September 18, 2014, by the U.S. Census Bureau indicate that child poverty fell by 0.4 percentage point between 2012 and 2013, to 22.2 percent. Though still significantly higher than in 2007 when the Great Recession hit (18.0 percent), and higher than at its conclusion (20.0 percent) in 2009, the decline from 2012 may be cause for optimism. Estimates suggest the number of poor children declined by roughly 300,000 between 2012 and 2013

Overall Declines in Child Poverty Mask Relatively Stable Rates Across States

In this brief, authors Andrew Schaefer, Jessica Carson, and Marybeth Mattingly use Census data released on September 15, 2016, from the American Community Survey--the only regular source for estimating yearly child poverty rates at, and below, the state level--to examine child poverty rates across the United States by place type, region, and state. They report that between 2014 and 2015, child poverty declined nationwide across rural areas, suburbs, and cities. As before, cities had the highest child poverty, followed closely by rural areas. Suburbs had the lowest rates. In thirteen states, child poverty declined since 2014; only Mississippi saw an increase since 2014, and the remaining thirty-six states and the District of Columbia had stable rates. Mississippi, New Mexico, and Louisiana had exceptionally high child poverty rates, each over 28 percent. New Hampshire child poverty was among the lowest nationwide, at 10.7 percent. It is important to keep in mind that most states experienced no change between 2014 and 2015. Lower child poverty rates appear to be driven by higher median incomes over the past year

Child Care Costs Exceed 10 Percent of Family Income for One in Four Families

In this brief, authors Marybeth Mattingly, Andrew Schaefer, and Jessica Carson analyze families’ child care expenses and identify, among families with young children who pay for child care, the share that are “cost burdened,” defined in this context as spending more than 10 percent of their gross income on child care. Using data from the 2012–2016 Current Population Survey, they present their findings by number of children; age of youngest child; parental characteristics; family income measures; and U.S. region, metropolitan status, and state. They report that about one in four families with young children who have child care costs are “burdened” by the cost, spending more than 10 percent of family income on child care. Across families with young children, an average of 8.8 percent of family income is spent on child care. More than half of poor families with young children are cost burdened by child care, compared to 39.3 percent of low income families (those with incomes between one and two times the poverty threshold) and just 13.4 percent of families at or above five times the poverty threshold. One in five married couples, and two in five single parents with young children and child care expenses, pay more than 10 percent of their income on these costs. Access to quality, affordable child care is critical for American working families

2016 Child Poverty Rate Sees Largest Decline Since Before Great Recession

Child poverty declined by 1.2 percentage points between 2015 and 2016, according to analyses of the official poverty measure (OPM) in the latest American Community Survey

The impact of lianas on tree regeneration in tropical forest canopy gaps: evidence for an alternative pathway of gap‐phase regeneration

1 Regeneration in forest canopy gaps is thought to lead invariably to the rapid recruitment and growth of trees and the redevelopment of the canopy. Our observations, however, suggest that an alternate successional pathway is also likely, whereby gap‐phase regeneration is dominated by lianas and stalled in a low‐canopy state for many years. We investigated gap‐phase regeneration in an old‐growth tropical forest on Barro Colorado Island (BCI) in Panama to test the following two hypotheses: (i) many gaps follow a pathway in which they remain at a low canopy height and are dominated by lianas and (ii) the paucity of trees in this pathway is a function of liana density. 2 We surveyed a total of 428 gaps of varying ages (c. 5, c. 10, and 13+ years old) and identified those which followed the conventional pathway of regeneration and others that remained stalled in a low‐canopy state for many years and were dominated by either lianas or palms. Each of these pathways will likely have different successional trajectories that will favour the growth of a distinct suite of mature species and ultimately result in contrasting species composition. 3 The successional pathway of liana‐dominated, stalled gaps is common throughout the forest. We estimate conservatively that 7.5% of the gaps that form each year will follow this pathway, probably due to the suppression of tree regeneration by lianas, and that many of these stalled gaps will persist for much longer than 13 years. Consequently, a high proportion of gaps in the forest at any given time will be stalled. Furthermore, liana tangles, which persist in the tropical forest understorey for extended periods of time, almost certainly originate in these gaps. 4 Liana abundance was positively correlated with pioneer tree abundance and diversity while negatively correlated with non‐pioneer tree abundance and diversity. Thus, lianas appear to inhibit non‐pioneer tree survival while indirectly enhancing that of pioneer trees. 5 Lianas are abundant in many types of tropical and temperate forests and a successional pathway involving liana‐dominated, stalled gaps may therefore be frequent and widespread