Prevalence Of Negative Effects Research Articles

Exposure pathways matter: Aquatic phototrophic communities respond differently to agricultural run‐off exposed via sediment or water

Abstract Small shallow ponds are widespread but understudied water bodies in agricultural landscapes. Agricultural run‐off (ARO) transports pesticides and nutrients into adjacent aquatic ecosystems where they occur dissolved in the water column or are bound to sediments. Consequently, aquatic communities are affected by ARO via different exposure pathways. We hypothesize that sediment‐bound ARO mainly affects submerged rooted macrophytes, while phytoplankton and periphyton are more prone to ARO in water. These primary producers compete for resources resulting in a regime shift between alternative stable states of macrophyte or phytoplankton dominance. We hypothesize that warming increases nutrient release from sediments and thereby facilitates the occurrence of phytoplankton dominance. Using a full‐factorial microcosm design, we exposed aquatic primary producers to either sediment or water application of a mixture of common pesticides (terbuthylazine, pirimicarb, tebuconazole and copper) and nitrate at two concentrations and two temperatures (22°C and 26°C) for 4 weeks. Initial and final concentrations of pesticides and nitrate, final biomass of macrophytes, periphyton and phytoplankton, pesticide accumulation in macrophytes and changes in carbon, nitrogen and phosphorus content and selected exoenzyme activities in the sediment were measured. We found lower final macrophyte biomass for both ARO treatments compared to controls, indicating a prevalence of negative effects by herbicides and competition for light with other phototrophs. In contrast, phytoplankton and periphyton biomass increased, but only when exposed to ARO via the water column, indicating a prevalence of positive effects by nutrient supply. Microbial carbon and nutrient cycling in sediments was not affected by ARO. Higher temperature mitigated ARO‐related effects on macrophytes under sediment exposure. Synthesis and application. ARO poses a strong risk of submerged macrophyte loss and establishment of turbid conditions with phytoplankton dominance in aquatic ecosystems. In conclusion, exposure pathways as well as indirect and interacting effects of multiple stressors need to be considered when designing appropriate mitigation measures. Under climate change, we suggest to prioritize local measures as buffer strips a reduced use of pesticides and fertilizers, and sediment removal as appropriate measures to protect these vulnerable but widespread aquatic systems, which are highly relevant for biodiversity in agricultural landscapes.

Adapting to Uncertainty: A Mixed-Method Study on the Effects of the COVID-19 Pandemic on Expectant and Postpartum Women and Men.

Detrimental biopsychosocial effects of the COVID-19 pandemic on populations have been established worldwide. Despite research indicating that the transition to parenthood is a vulnerable period for maternal and paternal health, an in-depth examination of the specific challenges the pandemic poses for new mothers and fathers is still lacking. Using a mixed-method design, we investigated individual and relational well-being of women and men who were expecting their first child during the first months of the COVID-19 pandemic in Portugal and its associations with contextual, individual, and relational factors. Adults older than 18 (n = 316, 198 women) from early pregnancy to 6-months postpartum completed a cross-sectional online survey assessing sociodemographic, individual (depression, anxiety, perceived stress), and relational (dyadic adjustment, perceived social support) self-report measures. From those, 99 participants (64 women) responded to an open-ended question and reported perceived changes in their couple’s relationship due to the pandemic. Men responding during strict lockdown measures reported significantly higher levels of perceived stress relative to those men who were not under lockdown. Overall, women reported higher levels of depression and greater social support than men. Qualitative analyses resulted in two main themes: Individual Changes and Relational Changes. These themes aggregate personal concerns and experiences (e.g., worsening of mental health, uncertainty about the future, lack of freedom) interrelated with relational issues (e.g., increased togetherness, avoidance of physical contact, and increased availability for parenthood during lockdown). The prevalence of negative effects (58.6%) exceeded the described positive effects (28.3%), and 13.1% described both positive and negative effects of the pandemic. Current findings offer grounds for important evidence-based strategies to mitigate the potential adverse effects of the current pandemic on new mothers’ and fathers’ individual and relational well-being.

Negative effects of psychotherapy: estimating the prevalence in a random national sample

Background Negative or adverse effects of psychological treatments are increasingly a focus of psychotherapy research. Yet, we still know little about the prevalence of these effects. Aims Starting from a representative national sample, the prevalence of negative effects and malpractice was determined in a subsample of individuals reporting psychotherapy currently or during the past 6 years. Method Out of an initial representative sample of 5562 individuals, 244 were determined to have had psychotherapy within the past 6 years. Besides answering questions related to treatment, its effects and the therapists, patients filled out the Negative Effects Questionnaire, items of the Inventory of Negative Effects of Psychotherapy reflecting malpractice and the Helping Alliance Questionnaire, and rated psychotherapeutic changes in different areas. Results Rates of positive changes related to therapy varied between 26.6% (relationship to parents) and 67.7% (improvement in depressed mood). Deteriorations were most commonly related to physical well-being (13.1%), ability to work (13.1%) and vitality (11.1%). Although patients generally reported a positive helping alliance, many of them reported high rates of negative effects (though not always linked to treatment). This was especially true of the experience of unpleasant memories (57.8%), unpleasant feelings (30.3%) and a lack of understanding of the treatment/therapist (19.3/18.4%). Indicators of malpractice were less common, with the exception that 16.8% felt violated by statements of their therapist. Conclusions This study helps to better estimate aspects of negative effects in psychotherapy ranging from deteriorations, specific effects and issues of malpractice that should be replicated and specified in future studies.

Pesticides and Soil Invertebrates: A Hazard Assessment

Agricultural pesticide use and its associated environmental harms is widespread throughout much of the world. Efforts to mitigate this harm have largely been focused on reducing pesticide contamination of the water and air, as runoff and pesticide drift are the most significant sources of offsite pesticide movement. Yet pesticide contamination of the soil can also result in environmental harm. Pesticides are often applied directly to soil as drenches and granules and increasingly in the form of seed coatings, making it important to understand how pesticides impact soil ecosystems. Soils contain an abundance of biologically diverse organisms that perform many important functions such as nutrient cycling, soil structure maintenance, carbon transformation, and the regulation of pests and diseases. Many terrestrial invertebrates have declined in recent decades. Habitat loss and agrichemical pollution due to agricultural intensification have been identified as major driving factors. Here, we review nearly 400 studies on the effects of pesticides on non-target invertebrates that have egg, larval, or immature development in the soil. This review encompasses 275 unique species, taxa or combined taxa of soil organisms and 284 different pesticide active ingredients or unique mixtures of active ingredients. We identified and extracted relevant data in relation to the following endpoints: mortality, abundance, biomass, behavior, reproduction, biochemical biomarkers, growth, richness and diversity, and structural changes. This resulted in an analysis of over 2,800 separate “tested parameters,” measured as a change in a specific endpoint following exposure of a specific organism to a specific pesticide. We found that 70.5% of tested parameters showed negative effects, whereas 1.4% and 28.1% of tested parameters showed positive or no significant effects from pesticide exposure, respectively. In addition, we discuss general effect trends among pesticide classes, taxa, and endpoints, as well as data gaps. Our review indicates that pesticides of all types pose a clear hazard to soil invertebrates. Negative effects are evident in both lab and field studies, across all studied pesticide classes, and in a wide variety of soil organisms and endpoints. The prevalence of negative effects in our results underscores the need for soil organisms to be represented in any risk analysis of a pesticide that has the potential to contaminate soil, and for any significant risk to be mitigated in a way that will specifically reduce harm to soil organisms and to the many important ecosystem services they provide.

High- versus low-intensity internet interventions for alcohol use disorders: results of a three-armed randomized controlled superiority trial.

AimsTo test the efficacy of a therapist‐guided high‐intensity internet intervention compared with an unguided low‐intensity internet intervention among individuals with alcohol use disorder.DesignA three‐group randomized controlled trial with follow‐up assessments post‐treatment (12 weeks) and 6 months post‐randomization (primary end‐point).SettingsGeneral population sample in Sweden.ParticipantsA total of 166 on‐line self‐referred adults (49% males) with a score of 14 (females)/16 (males) or more on the Alcohol Use Disorders Identification Test, a preceding week alcohol consumption of 11 (females)/14 (males) or more standard drinks and an alcohol use disorder according to a diagnostic interview.Interventions and comparatorsBoth the high‐ (n = 72) and low‐intensity internet interventions (n = 71) consisted of modules based on relapse prevention. Controls were on a waiting‐list (n = 23), and were only followed until the post‐treatment follow‐up. Participants were randomized at a 7 : 7 : 2 ratio.MeasurementsPrimary outcome was self‐reported alcohol consumption in the preceding week measured as (1) number of standard drinks and (2) number of heavy drinking days at the 6‐month follow‐up.FindingsAlcohol use disorders were largely in the severe category (74.7%), with the majority of participants having had alcohol problems for more than 5 years. Attrition was 13 and 22% at the post‐treatment and 6‐month follow‐up, respectively. At the 6‐month follow‐up, an intent‐to‐treat analysis showed no significant differences in alcohol consumption between the high‐ and low‐intensity interventions [standard drinks d = −0.17, 95% confidence interval (CI) = −0.50 to 0.16; heavy drinking days: d = −0.07, 95% CI = −0.40 to 0.26]. Prevalence of negative effects was somewhat low (8–14%) in both intervention groups, as was deterioration (3–5%).ConclusionsAt 6‐month follow‐up, there were no significant differences between a therapist‐guided high‐intensity internet intervention and an unguided low‐intensity internet intervention in reducing alcohol consumption among individuals with an alcohol use disorder.

Unregulated Pollutants from Tampered Two-wheelers

A fleet of 9 two-wheelers (5 mopeds and 4 motorcycles) was tested in the Vehicle Emissions Laboratory of the European Commission Joint Research Centre to evaluate the effect of several tampering procedures on the tailpipe exhaust emissions. Vehicles performed prescribed driving cycles (ECE-R47 and WMTC) on a chassis dynamometer in a climatic test cell, and raw as well as diluted emissions were collected, the latter following the European legislation. After testing the vehicles in their original configuration, an intrusive tampering was applied and tests were repeated for comparison of the results. We found that the impact of tampering is vehicle- and compound-specific with a prevalence of negative effects on the exhaust emissions (regulated and unregulated). Remarkably in some cases, the tampering for improved vehicles’ performance increased the total hydrocarbons and carbon monoxide up to 27 and 15 times with respect to the original vehicles in hot engine conditions. Nitrogen oxides increased up to a factor of 2 when the tampering involved the intake air or hotter/leaner engine conditions. The results for unregulated compounds included ammonia (up to a 30 fold increase), nitrogen dioxide (up to 11 times), nitrous oxide (up to 2.5 times), acetaldehyde (up to 2.4 times), formaldehyde (up to 4 times), ethanol (up to 3.4 times) and aromatic compounds (up to 2 times). We show that tampering aimed at improving the vehicle's performance can have deleterious effects on the exhaust emissions, thus posing serious concerns on air quality.