Environment and shipping drive environmental DNA beta-diversity among commercial ports.

The spread of nonindigenous species by shipping is a large and growing global problem that harms coastal ecosystems and economies and may blur coastal biogeographical patterns. This study coupled eukaryotic environmental DNA (eDNA) metabarcoding with dissimilarity regression to test the hypothesis that ship-borne species spread homogenizes port communities. We first collected and metabarcoded water samples from ports in Europe, Asia, Australia and the Americas. We then calculated community dissimilarities between port pairs and tested for effects of environmental dissimilarity, biogeographical region and four alternative measures of ship-borne species transport risk. We predicted that higher shipping between ports would decrease community dissimilarity, that the effect of shipping would be small compared to that of environment dissimilarity and shared biogeography, and that more complex shipping risk metrics (which account for ballast water and stepping-stone spread) would perform better. Consistent with our hypotheses, community dissimilarities increased significantly with environmental dissimilarity and, to a lesser extent, decreased with ship-borne species transport risks, particularly if the ports had similar environments and stepping-stone risks were considered. Unexpectedly, we found no clear effect of shared biogeography, and that risk metrics incorporating estimates of ballast discharge did not offer more explanatory power than simpler traffic-based risks. Overall, we found that shipping homogenizes eukaryotic communities between ports in predictable ways, which could inform improvements in invasive species policy and management. We demonstrated the usefulness of eDNA metabarcoding and dissimilarity regression for disentangling the drivers of large-scale biodiversity patterns. We conclude by outlining logistical considerations and recommendations for future studies using this approach.

Outcomes of Implementing Routine Screening and Referrals for Perinatal Mood Disorders in an Integrated Multi-site Pediatric and Obstetric Setting.

PURPOSE: We report on a successful quality improvement project designed to increase access to perinatal mental health services through universal screening for postpartum depression (PPD) and facilitating referrals for evaluation and treatment, at a multi-site, integrated system of pediatric and obstetric practices in Houston, Texas. DESCRIPTION: Obstetric practices administered screenings twice during pregnancy and at 6 weeks postpartum. Pediatric practices screened women at the 2 week and 2, 4, and 6-month well-baby visit. Women with a score of 10 or higher on the Edinburgh Postnatal Depression Scale (EPDS) or women that reported thoughts of self-harm were offered a referral to a mental health provider. Data on screening and referrals were collected from the electronic medical record. RESULTS: A total of 102,906 screens for PPD were completed between May 2014 and July 2018. Of those, 6487 (6.3%) screened positive. The total number of women referred to treatment were 3893 (3.8%). Of referred women 2172 (55.8%) completed an appointment with a mental health provider within 60 days of referral. Rates of completed appointments varied by the level of integration of the mental health provider and referring physician: women referred by pediatrics in a Level 1 coordinated system completed 20.0% of referrals; obstetrics Level 4 co-located system, 76.6%; and obstetrics Level 5 integrated model, 82.7%. CONCLUSION: This project demonstrated that with planning, systems review and trained staff, PPD screening can be integrated into obstetric and pediatric practices and high screening and referral rates can be achieved.

Planktonic equatorial diversity troughs: fact or artifact? Latitudinal diversity gradients in Radiolaria.

In contrast to the classical notion of an increasing biodiversity from the poles to the equator, a number of studies concluded that the diversity of marine species is highest at the middle latitudes, and decreases at the equator. Using a worldwide database critically compiled from 72 surveys (307 species, 4,807 water column and surface sediment samples), we analyzed the latitudinal gradients in species richness (LGSR) of a highly diversified group of marine holoplanktonic protists, the polycystine Radiolaria. Species richness values were corrected for uneven sample coverage and sample size, and contrasted with gradients in 11 environmental variables. Radiolarian species richness decreases from the equator to the poles both in the water column and in the surface sediments and is tightly coupled with temperature throughout the entire thermal range of marine waters. In the tropical Pacific Ocean, a conspicuous east-west gradient in diversity is also associated with temperature. Globally, diversity is negatively correlated with mean annual concentrations of nutrients (N, P, Si) and chlorophyll a. Disagreements with results reported for many other oceanic plankton may stem from the reduction of 3D distributional patterns onto 2D or 1D spaces, to the intermittent mixing of Subtropical and Subpolar species at the middle latitudes, and to a Mid-Domain Effect. The fact that radiolarian LGSR do not show this drop at the equator is partly due to methodological and database-related differences, and probably also in part a reflection of taxon-specific traits.

Ecosystem services provided by the exotic bivalves Dreissena polymorpha, D. rostriformis bugensis, and Limnoperna fortunei.

The ecosystem services approach to conservation is becoming central to environmental policy decision making. While many negative biological invasion-driven impacts on ecosystem structure and functioning have been identified, much less was done to evaluate their ecosystem services. In this paper, we focus on the often-overlooked ecosystem services provided by three notable exotic ecosystem engineering bivalves, the zebra mussel, the quagga mussel, and the golden mussel. One of the most significant benefits of invasive bivalves is water filtration, which results in water purification and changes rates of nutrient cycling, thus mitigating the effects of eutrophication. Mussels are widely used as sentinel organisms for the assessment and biomonitoring of contaminants and pathogens and are consumed by many fishes and birds. Benefits of invasive bivalves are particularly relevant in human-modified ecosystems. We summarize the multiple ecosystem services provided by invasive bivalves and recommend including the economically quantifiable services in the assessments of their economic impacts. We also highlight important ecosystem disservices by exotic bivalves, identify data limitations, and future research directions. This assessment should not be interpreted as a rejection of the fact that invasive mussels have negative impacts, but as an attempt to provide additional information for scientists, managers, and policymakers.

Misleading estimates of economic impacts of biological invasions: Including the costs but not the benefits.

The economic costs of non-indigenous species (NIS) are a key factor for the allocation of efforts and resources to eradicate or control baneful invasions. Their assessments are challenging, but most suffer from major flaws. Among the most important are the following: (1) the inclusion of actual damage costs together with various ancillary expenditures which may or may not be indicative of the real economic damage due to NIS; (2) the inclusion of the costs of unnecessary or counterproductive control initiatives; (3) the inclusion of controversial NIS-related costs whose economic impacts are questionable; (4) the assessment of the negative impacts only, ignoring the positive ones that most NIS have on the economy, either directly or through their ecosystem services. Such estimates necessarily arrive at negative and often highly inflated values, do not reflect the net damage and economic losses due to NIS, and can significantly misguide management and resource allocation decisions. We recommend an approach based on holistic costs and benefits that are assessed using likely scenarios and their counter-factual.

Building and Advancing Coalition Capacity to Promote Health Equity: Insights from the Health Equity Collective's Approach to Addressing Social Determinants of Health.

This article presents the structure and function of the Health Equity Collective in developing a systemic approach to promoting health equity across the Greater Houston area. Grounded in Kania and Kramer's five phases of collective impact for coalition building, The Collective operationalizes its mission through its backbone team, steering committees, and eight workgroups; each has goals that mutually reinforce and advance its vision. To date, Phase I (generating ideas), Phase II (initiating action), and Phase III (organizing for impact) have been completed. Phases IV (implementation) and Phase V (sustainability) are currently underway.

CAN DO Houston: a community-based approach to preventing childhood obesity.

BACKGROUND: Comprehensive, community-based efforts may reduce rates of childhood obesity. COMMUNITY CONTEXT: Almost half of the children in Houston are overweight or obese, even though Houston has many available resources that support good nutrition, physical activity, and prevention of weight gain among children. METHODS: We used existing resources to implement a community-based, childhood obesity prevention initiative in 2 low-income neighborhoods in Houston. On the basis of input from community members, we coordinated various activities to promote healthy living, including after-school programs, grocery store tours, wellness seminars, cooking classes, and staff wellness clubs. OUTCOME: Preliminary findings indicated that residents in the communities are using additional opportunities to participate in physical activity and nutrition education. INTERPRETATION: Implementing a successful childhood obesity prevention initiative in an urban setting is feasible with minimal funding through the use of existing resources.

Women's Experiences of Being Screened for Intimate Partner Violence in the Health Care Setting.

OBJECTIVE: To qualitatively describe experiences of survivors of intimate partner violence (IPV) in being screened for IPV and to identify opportunities to improve screening and response by health care providers. DESIGN: Qualitative descriptive study. SETTING/LOCAL PROBLEM: Although it is recommended that nurses and other health care providers screen for IPV, a local needs assessment of IPV screening among health care practices in Houston, Texas, showed inconsistencies in IPV screening practices, a lack of understanding on how to screen for IPV, and low referral rates to IPV agencies. PARTICIPANTS: Seventeen survivors of IPV from three agencies that provide services to survivors of IPV. INTERVENTION/MEASUREMENTS: Three focus groups were conducted, and notes were coded and analyzed for content and themes using open coding from the observed data. The constant comparative method was used for the analysis. RESULTS: Four themes emerged from the focus group data. The first three themes address concepts and dynamics of IPV that affect IPV screening and disclosure of abuse. The final theme addresses screening for IPV in health care settings. CONCLUSION: Many survivors reported that they were not screened for IPV by health care professionals, and those who were screened were not screened effectively. Compassionate care is needed in these situations, and nurses and other health care providers should be aware that the responses of IPV survivors are dynamic and may change over time.

Enfermedad hemolítica neonatal por incompatibilidad del sistema Diego (Aloinmunización por anticuerpos IgG anti Diegos) / Hemolitic neonatal disease due to Diego system incompatibility (Alloimmunization by IgG antibodies anti Diegos)

Se describe un caso de enfermedad hemolítica por incompatibilidad del sistema Diego. Se revisan las características antigénicas y étnicas de este sistema sanguíneo de distribución restirngida, llamado también sistema "familiar" o "privado", en contraste con los sistemas "comunes" o "firmemente establecidos" como el ABO y Rh. Por último, se analiza la importancia de este factor en el estudio de las migraciones de las poblaciones precolombinas