Environmental determinants of vegetation in the drawdown zones of a Columbia River Treaty reservoir: a template for ecosystem enhancement.

Water storage reservoirs alternately inundate and expose the drawdown zones, limiting riparian vegetation that provides wildlife habitats and contributes to the aquatic food-web. To characterize plant distributions and hydrogeomorphic associations, we inventoried quadrats in transects extending from the full-pool (FP) margin, downwards 12 m through the drawdown zones at sites around the Duncan Reservoir in British Columbia, Canada. Among the 69 plant species, black cottonwoods (Populus trichocarpa), willows (primarily Salix sitchensis) and other trees and shrubs occurred sparsely, rarely extending below 2 m below FP. Perennial herbaceous plants, especially horsetail (Equisetum arvense) and sedges (primarily Carex utriculata), were most common, extending down ~5 m below FP, and ruderal annual plants occurred sparsely at greater depths. Vegetation Cover and Species Richness were correlated with environmental factors, with (1) Elevation being highly influential, reflecting inundation duration and depth. (2) Position, longitudinal location, reflected greater vegetation diversity downstream of the reservoir. (3) Finer Substrate texture was favorable to retain moisture, but coarse sediments would resist erosion. (4) Shallow Slope was favorable to reduce drainage and included finer sediments. (5) Distance from the FP shoreline could reflect seed source proximity. Stepwise linear modeling with combined environmental factors accounted for ~30% of the variation in Vegetation Cover and Richness, and Canonical Correspondence Analysis revealed plant groupings relative to the environmental influences. At this and other storage reservoirs, regimes that reduce the frequency and duration of inundation could promote vegetation in locations with suitable environmental conditions in the upper drawdown zones, thus providing ecosystem enhancement.

Efficacy of a parent-youth teamwork intervention to promote adherence in pediatric asthma.

OBJECTIVE: To determine whether a parent-youth teamwork intervention improved medication adherence and related outcomes among youth with asthma. METHODS: We used a randomized clinical trial with 48 youth (aged 9-15 years) assigned to 1 of 3 groups: Teamwork Intervention (TI), Asthma Education (AE), or Standard Care (SC). Treatment occurred across 2 months, with a 3-month follow-up assessment. Adherence to inhaled corticosteroids was assessed via the MDILog-II. Parent-adolescent conflict, asthma functional severity, and spirometry assessments were obtained pre-treatment, post-treatment, and on follow-up. Mixed linear model analysis was used to evaluate group and time effects for outcome measures. RESULTS: TI group had significantly higher adherence and lower functional severity scores than AE or SC conditions, and lower parent-reported conflict and a trend for higher spirometry values compared with the SC group. CONCLUSIONS: Results suggest support for the efficacy of TI for improving medication adherence as youth acquire more responsibility for their asthma management.

Screening and brief interventions for alcohol: attitudes, knowledge and experience of community pharmacists in Auckland, New Zealand.

INTRODUCTION: Screening and brief intervention (SBI) for alcohol consumption in primary care have been shown to be effective in reducing drinking. This role has not been taken up by community pharmacists. This study aimed to explore attitudes, knowledge, barriers and incentives towards involvement of community pharmacists in New Zealand with problem drinkers. METHOD: A postal survey (three mailshots) of community pharmacies was undertaken in Auckland, New Zealand, followed by a 10% random sample non-responder-follow-up. RESULTS: A response rate of 39.1% to the postal survey was obtained. In general, knowledge of alcohol content of drinks and recommended safe drinking limits was poor. Respondents were generally well motivated towards undertaking this role, but lacked knowledge, skills and confidence. On follow-up, non-responders were found to be less knowledgeable, but had similar attitudes to respondents, indicating potential for extrapolation with regard to beliefs and views on this subject. DISCUSSION: This novel study has found that there is potential for involvement of community pharmacists in New Zealand in SBI for problem drinkers. Lack of knowledge can be remedied relatively easily; greater hurdles such as lack of skills, and lack of confidence may be offset by the high level of motivation of this group. This is an area where community pharmacists can further their professional scope of practice by being in an essential position to provide this service.

Review of the literature: integrating psychoneuroimmunology into pediatric chronic illness interventions.

OBJECTIVE: Provide an orientation to psychoneuroimmunology, a rationale for including assessments of immune function in intervention studies of pediatric chronic illness, review the current literature, and provide recommendations for future research. METHODS: Using electronic searches and previous reviews, selected and reviewed published studies in which immunological changes related to psychological interventions were assessed in pediatric samples. RESULTS: Eight studies were identified and included in the review. These utilized a range of interventions (e.g., disclosure and hypnosis) and included a variety of pediatric samples (e.g., those with asthma, HIV infection, or lupus). CONCLUSIONS: Results suggest that psychological intervention can influence immune function in pediatric samples. Recommendations for advancing our knowledge by studying populations for whom the immune system plays an active role in disease pathophysiology, measuring disease-relevant immune mediators, studying pediatric patients under times of stress, and focusing on interventions aimed at altering the stress system are provided.