Assessing nitrogen and phosphorus removal potential of five plant species in floating treatment wetlands receiving simulated nursery runoff.

The feasibility of using floating treatment wetlands (FTWs) to treat runoff typical of commercial nurseries was investigated using two 8-week trials with replicated mesocosms. Plants were supported by Beemat rafts. Five monoculture treatments of Agrostis alba (red top), Canna × generalis 'Firebird' (canna lily), Carex stricta (tussock sedge), Iris ensata 'Rising Sun' (Japanese water iris), Panicum virgatum (switchgrass), two mixed species treatments, and an unplanted control were assessed. These plant species are used for ornamental, wetland, and biofuel purposes. Nitrogen (N) and phosphorus (P) removals were evaluated after a 7-day hydraulic retention time (HRT). N removal (sum of ammonium-N, nitrate-N, and nitrite-N) from FTW treatments ranged from 0.255 to 0.738 g·m-2·d-1 (38.9 to 82.4% removal) and 0.147 to 0.656 g·m-2·d-1 (12.9 to 59.6% removal) for trials 1 and 2, respectively. P removal (phosphate-P) ranged from 0.052 to 0.128 g·m-2·d-1 (26.1 to 64.7% removal) for trial 1, and 0.074 to 0.194 g·m-2·d-1 (26.8 to 63.2% removal) for trial 2. Panicum virgatum removed more N and P than any other FTW treatment and the control in both trials. Results show that species selection and timing of FTW harvest impact the rate and mass of nutrient remediation. FTWs can effectively remove N and P from runoff from commercial nurseries.

Data on floating treatment wetland aided nutrient removal from agricultural runoff using two wetland species.

The data presented in this article are related to the research article entitled "Floating treatment wetland aided nutrient removal from agricultural runoff using two wetland species" (Spangler et al., 2018). This Data in Brief article provides data on concentrations of common ions, macro- and micro-nutrients and metals every other week during a floating treatment wetland (FTW) mesocosm experiment, and macro- and micro-nutrient contents in cumulative plant tissues, data on continuously monitored water temperature, and nitrogen and phosphorus removal curves assessed every other week. The full data set is made available to enable critical or extended analysis of the research.

Self-reported childhood attention-deficit/hyperactivity disorder symptoms are not specific to the disorder.

OBJECTIVE: The present study examined the specificity of self-reported childhood attention-deficit/hyperactivity disorder (ADHD) symptoms using the Wender Utah Rating Scale (WURS) in young adults with (1) a previous diagnosis of ADHD, (2) comorbid ADHD and psychological symptoms or diagnoses, (3) psychological diagnoses or symptoms without comorbid ADHD, and (4) controls. METHOD: One thousand four hundred thirty-one non-treatment-seeking individuals (508 males), aged 18 to 25 years, were assigned to 1 of 4 groups (psychological controls, controls, ADHD, ADHD comorbid), based on responses to psychological, demographic, and health history questionnaires completed as part of a larger study. Responses to the WURS were analyzed at the individual item and subtest levels for their specificity to ADHD using area under the curve analyses. RESULTS: The standard WURS cutoff score of 46 was neither sensitive nor specific to ADHD, with a high rate of false positives in psychological controls. Factor analyses supported a 5-factor model (conduct problems, impulsivity problems, mood difficulties, inattention/anxiety symptoms, poor academic functioning) that accounted for 62% of the total variance; these factors were used to generate factor-based WURS subscales. Three subscales (impulsivity, poor academic functioning, and inattention/anxiety symptoms) showed potential for discriminating ADHD from controls among females. No subscales showed adequate sensitivity or specificity for discriminating ADHD from psychological controls among the males. CONCLUSIONS: Results provide further evidence that retrospective self-report of childhood ADHD symptoms is not specific to ADHD and highlight concerns about the reliance on self-report of childhood ADHD symptoms for diagnostic purposes. Results suggest consideration of specific types of symptoms, and sex differences might increase diagnostic use of self-reported childhood symptoms.

Changing face of pain: evolution of pain research in psychosomatic medicine.

OBJECTIVE: This article provides an overview of how psychosomatic research on pain has evolved over the past 60 years as exemplified by studies published in Psychosomatic Medicine. METHODS: Each issue of Psychosomatic Medicine from 1939 to 1999 was reviewed to identify papers that dealt with pain, painful medical conditions, or pain management. A total of 150 papers were identified and grouped into seven categories: 1) case studies; 2) studies of personality traits and other individual differences; 3) psychophysiological studies of pain; 4) studies using pain induction techniques; 5) studies examining the relation of relation of race, ethnicity, and culture to pain; 6) studies of pain unique to women; and 7) studies examining treatments for pain. RESULTS: A substantial number of studies on pain and painful conditions were published in the Journal in the 1940s and 1950s, and that number has almost doubled in the most recent full decade of the Journal. Within the pain area, however, the topics of interest to psychosomatic researchers have been, and continue to be, quite diverse. Although publications on certain methods or topics (eg, psychodynamic case studies, physiological correlates of pain) have decreased over time, publications on other topics (eg, personality traits and individual differences) have remained relatively constant, and publications on still other topics (eg, studies using pain induction techniques; studies of race, ethnicity, and culture; women's pain; and treatment studies) have flourished recently. CONCLUSIONS: Considered overall, the results of our review suggest that the face of pain research published in PM has changed considerably in the past 60 years. Given the ongoing commitment of psychosomatic researchers to this area, we expect this evolution to continue in the years to come.