Contrasting soil nitrogen dynamics across a montane meadow and urban lawn in a semi-arid watershed

Urbanization substantially increases nitrogen (N) inputs and hydrologic losses relative to wildland ecosystems, although the fate of N additions to lawns and remnant grasslands remains contested. In montane semi-arid ecosystems, N cycling is often closely coupled to snowmelt (the dominant period of infiltration) and snow cover, which impact soil temperature and moisture. Here, we compared soil N dynamics between a fertilized and irrigated urban lawn and nearby riparian meadow in Salt Lake City, Utah during a snow manipulation experiment. Snow removal increased freeze/thaw events but did not affect N pools, microbial biomass, denitrification potential, or soil oxygen (O₂). Mineral N was similar between sites despite lawn fertilization, but dissolved organic N (DON) was four-fold greater (2.1 ± 0.1 mg N l^?1) in lawn soil water. Infiltration was lower in the lawn subsoil, and leaching losses (modeled with Hydrus) were small at both sites (< 2 kg N ha^?1 y^?1) despite substantial lawn fertilization. Lawn soil O₂ fluctuated between 20.9 and 1.6 % following snowmelt and irrigation, but remained near 20 % in the meadow; the lawn had more reducing microsites as indicated by iron speciation. Post-snowmelt potential denitrification was six-fold greater in the lawn than the meadow. Lawns can potentially provide hotspots of denitrification in a semi-arid landscape that exceed some natural riparian ecosystems, whereas DON may represent an increasingly important form of N loss from lawns.     

Urbanization is not associated with increased abundance or decreased richness of terrestrial animals - dissecting the literature through meta-analysis

The widely accepted consensus is that urbanization increases abundance but reduces species richness of animals. This assumption is the premise for empirical tests and theoretical explanations. We studied the association of urbanization with abundance and species richness of different animal taxa in 20 and 26 published articles reporting abundances and richness, respectively via meta-analysis. Because some articles had multiple estimates, we analyzed 40 and 58 estimates of abundance and richness, respectively. Contrary to conventional wisdom, the overall abundance of terrestrial animals was not higher in urban areas, but instead actually lower, while we failed to confirm the conventional thinking of lower species richness with urbanization. These findings cannot, however, be generalized across all cities and animal species, as conflicting differences were reported among geographical regions, animal taxa. Our results question the conventional wisdom that urbanization generally increases abundances while reducing species richness, and highlights the variability of urbanization effects on diversity among taxa and geographic regions.     

The Differential Effects of Racially Homophilous Sponsorship Ties on Job Opportunities in an Elite Labor Market: The Case of NCAA Basketball Coaching

We examine how an assistant coach's race and the race of his supervisor (the head coach) interact to affect future job quality. While past research argues that homophily is beneficial to job mobility, we find differential effects based on the race. OLS and OLR regression analyses on the quality of one's first head coaching job in NCAA men's basketball indicate that black assistant coaches working under black head coaches (black homophily) are significantly disadvantaged compared to all other racial combinations: white assistants with white supervisors (white homophily), white assistants with black supervisors (white heterophily), and black assistants with white supervisors (black heterophily). In contrast, there is no significant difference in job quality among the latter three groups: white homophily, white heterophily, and black heterophily. This indicates that while homophily is neither advantageous nor disadvantageous for whites, it is disadvantageous for black job candidates. This racially based disadvantage makes it difficult for minority job candidates to break through the glass ceiling and has real‐world financial implications.     

Intimate Partner Communication From the War Zone: A Prospective Study of Relationship Functioning,Communication Frequency,and Combat Effectiveness

This study examined (a) the association between relationship functioning prior to and during deployment, and the frequency of communication during deployment; and (b) the association between relationship functioning and depression during deployment and their influence on service members’ ratings of duty performance. Participants were 144 partnered Airmen assessed immediately before and during a one‐year high‐risk deployment to Iraq. Results showed an overall high frequency of partner communication during deployment. High relationship distress at predeployment predicted lower frequency of communication during deployment. Changes in relationship distress from before deployment to during deployment independently predicted frequency of communication, above and beyond predeployment distress levels. Level of relationship distress and depression during deployment independently predicted service members’ ratings of impact on duty performance.     

Determinants and Long‐Term Effects of Attendance Levels in a Marital Enrichment Program for African American Couples

Although most efficacious marital enrichment programs are multisession, few studies have explored whether outcomes differ according to session attendance, particularly among minority groups with lower than average participation in prevention programs. This study therefore investigates attendance levels and long‐term improvements in couple functioning among 164 couples participating in the Promoting Strong African American Families program. Structural equation models indicated session attendance predicted 2‐year changes for men's reports of communication, commitment, and spousal support (marginally) but not for women's. Individual and couple characteristics that predicted attendance levels were also identified. Results highlight distinct gender differences in the effects of sustained attendance as well as characteristics that provide early identifiers for African American couples at increased risk of low program attendance.     

Examining Attachment Avoidance and Attachment Anxiety Across Eight Sessions of Couple Therapy

This study examined initial levels of attachment anxiety and avoidance, as well as their patterns of change, across eight sessions of couple therapy. Participants were 461 couples in a treatment‐as‐usual setting. Dyadic latent growth modeling was used to determine whether couples started therapy at similar levels of attachment anxiety and avoidance and whether attachment anxiety and avoidance changed. An actor partner interdependence model was used to see whether partner attachment anxiety was related to avoidance. Results showed relative stability of attachment anxiety and avoidance over the course of therapy, with the only change being a slight decline in attachment anxiety among women. Results showed that a person's attachment anxiety was not related to their partner's avoidance and vice versa.     

Healthcare Use in the Heartland: How Health Care Selection Varies Between Rural,Retirement‐Age Migrants and Long‐Term Residents

One increasingly important problem affecting rural health care selection is the tendency of older residents to bypass local health care providers. This research investigates how the effects of community characteristics and attachment on health care bypass behavior vary between rural retirement‐age migrants and retirement‐age long‐term residents. Non‐health‐related behaviors, such as purchasing goods and services outside one's community during a health care trip, that is, “outshopping,” could influence bypass if individuals combine trips for their medical care with other consumer needs. Basing our work on the outshopping theory, we argue that bypass behavior is one facet of consumer consumption patterns for both rural retirement‐age migrants and long‐term residents. In addition, dissatisfaction with local health care and services like shopping can “push” rural residents to bypass local health care and travel greater distances for primary health care. We further contend that strong community attachment has an opposite “pull” effect that can help to negate the push of outshopping and reduce the likelihood of bypass. Our results reveal retirement‐age migrants are significantly more likely to bypass local primary health care providers than retirement‐age long‐term residents. Furthermore, our analysis bridges the rural health care and retirement community development literature to suggest that outshopping theory can now be applied to rural primary health care bypass behavior.     

A decomposition method based on a model of continuous change

A demographic measure is often expressed as a deterministic or stochastic function of multiple variables (covariates), and a general problem (the decomposition problem) is to assess contributions of individual covariates to a difference in the demographic measure (dependent variable) between two populations. We propose a method of decomposition analysis based on an assumption that covariates change continuously along an actual or hypothetical dimension. This assumption leads to a general model that logically justifies the additivity of covariate effects and the elimination of interaction terms, even if the dependent variable itself is a nonadditive function. A comparison with earlier methods illustrates other practical advantages of the method: in addition to an absence of residuals or interaction terms, the method can easily handle a large number of covariates and does not require a logically meaningful ordering of covariates. Two empirical examples show that the method can be applied flexibly to a wide variety of decomposition problems. This study also suggests that when data are available at multiple time points over a long interval, it is more accurate to compute an aggregated decomposition based on multiple subintervals than to compute a single decomposition for the entire study period.     

Spending Today or Saving for Tomorrow: The Influence of Family Financial Socialization on Financial Preparation for Retirement

Many of the factors that motivate individuals occur within the context of the family, and can be influenced through family socialization processes. To better understand the influence family socialization processes may have on financial capabilities and financial behaviors, 334 married couples were sampled. Structural equation modeling was used to examine both direct and indirect associations. Findings indicated direct relationships between materialism and financial strain, between religiosity and determination of needs, and between financial strain and saving for retirement. Indirect relationships were found between materialism and saving for retirement through financial strain. Our study found evidence to support the Family Financial Socialization theoretical framework. Financial counselors may benefit by understanding how couples socialize each other as they prepare for retirement.