The influence of urban lawn mowing regimes on diversity of Heteroptera (Hemiptera)

In order to analyse the potential of an extensive mowing regime for influencing the biodiversity of insects on public urban grassland areas in a middle-sized town, we compared intensively mowed lawns (one mowing event per month) with meadows that were extensively mowed only twice a year. Over the entire field season, 335 true bug individuals of 49 species and 12 families were caught by using spoon nets and an insect aspirator. We established that the process of mowing on a regular monthly basis reduced heteropteran biodiversity about 50% per mowing event. Moreover, extensively mowed meadows showed significantly higher total species numbers and biodiversity indices. With respect to true bugs, lawns were characterised by the absence of typical meadow species that could be found on the extensively mowed study plots. Our research supports the initiative “Bunte Wiese (Colourful Meadow) – Species Diversity in Public Greenspaces” of the University of Tübingen, which is campaigning for the enhancement of species diversity in public urban greenland areas by reorganising the intensive mowing into a “twice a year”-programme.Die Häufigkeit der Mahd von Grünflächen hat einen großen Einfluss auf die Entwicklung von Pflanzen und Tieren. Insbesondere Insektenpopulationen können durch eine hohe Mahdfrequenz empfindlich geschädigt werden. In vorliegender Arbeit untersuchten wir daher die Auswirkung der Reduktion der Mahdfrequenz innerstädtischer Rasenflächen auf die Wanzenvielfalt. Die Umstellung von intensiver Rasenpflege zu extensiver Wiesenmahd ermöglichte es uns, während einer Vegetationsperiode 335 Wanzen aus 49 Arten und 12 Familien zu fangen. Der Vergleich mit weiterhin intensiv gepflegten Rasenflächen zeigte uns, dass die monatliche Mahd die Wanzenpopulation um etwa 50% pro Mahd reduziert. Extensiv gepflegte Stadtwiesen zeigten eine signifikant höhere Artenzahl und höhere Biodiversitätsindizes. In Bezug zur Wanzenzönose lassen sich intensiv gepflegte Rasenflächen durch die Abwesenheit von typischen Graslandwanzen charakterisieren. Unsere Ergebnisse unterstützen die Ziele und Argumente der Initiative „Bunte Wiese – Für mehr Artenvielfalt auf öffentlichem Grün” der Universität Tübingen, welche einen Beitrag zur Verminderung des weltweiten Insektensterbens leisten möchte, indem sie für eine weitreichende Extensivierung der Mahd eintritt und dadurch flächendeckend artenreiche Grünflächen schaffen möchte, welche Lebensraum für Pflanzen und Tiere bieten

Urban Nature: Perception and Acceptance of Alternative Green Space Management and the Change of Awareness after Provision of Environmental Information. A Chance for Biodiversity Protection

Measurable ecological data, e.g., species diversity, provide inadequate information for achieving the comprehensive protection of biodiversity, because human acceptance attitudes can be important factors in undermining nature protection schemes. We have analysed an ecologically driven urban management system presented to urban habitants. A photograph-based survey answered by 424 participants was used to evaluate their impressions of natural meadows. The positive effect of provided information tables was demonstrated by pre- and post-test designs. Attitudes towards urban nature protection showed a statistical preference for green-area management systems optimising insect protection compared with more regularly mowed meadows and lawns. Thus, the perceptions of people should be considered in processes of biodiversity protection. Our results correlate with personal attitude and education, support the aims of extensive green-space management and should encourage urban planners to integrate biodiversity protection zones into urban planning

Urban Nature: Perception and Acceptance of Alternative Green Space Management and the Change of Awareness after Provision of Environmental Information. A Chance for Biodiversity Protection

Measurable ecological data, e.g., species diversity, provide inadequate information for achieving the comprehensive protection of biodiversity, because human acceptance attitudes can be important factors in undermining nature protection schemes. We have analysed an ecologically driven urban management system presented to urban habitants. A photograph-based survey answered by 424 participants was used to evaluate their impressions of natural meadows. The positive effect of provided information tables was demonstrated by pre- and post-test designs. Attitudes towards urban nature protection showed a statistical preference for green-area management systems optimising insect protection compared with more regularly mowed meadows and lawns. Thus, the perceptions of people should be considered in processes of biodiversity protection. Our results correlate with personal attitude and education, support the aims of extensive green-space management and should encourage urban planners to integrate biodiversity protection zones into urban planning

Perception of Urban Green Areas Associated with Sociodemographic Affiliation, Structural Elements, and Acceptance Stripes

The extensification (opposite of intensification) of urban public green spaces offers great potential for conservation. One major issue for the long-term success of such a measure is, however, its acceptance by the urban population. This contribution presents the results of an image-based online questionnaire that we set to elucidate the role of sociodemographic affiliations regarding the perception of urban green areas. We also asked whether acceptability can be increased by the presence of additional structural elements (sculptures, benches) and “acceptance stripes”, i.e., stripes regularly mowed only at the margins of a natural green space. Regarding structural elements, 40- to 60-year-olds consistently rejected intensely maintained lawns and perceived a lawn as positive only in combination with a sculpture. A regularly mowed acceptance stripe resulted in a positive perception of natural meadows by people with an affinity for city life, classified based on their actual place of residence and/or their social dimension including aspects such as sense of place, familiarity, profession, and interests. Thus, decision-making processes of policy makers must be evaluated together with the urban population and should be assessed multidimensionally, i.e., by considering various criteria (e.g., ecological, social, and aesthetic aspects) in order to meet the requirements of residents and achieve an increase in biodiversity

Insect hibernation on urban green land: a winter-adapted mowing regime as a management tool for insect conservation

Insect conservation is challenging on various ecological scales. One largely neglected aspect is the quality of undisturbed hibernation sites. This study aims to fill a lack of knowledge concerning insect hibernation on uncut meadows persisting in urban green spaces during the winter season in a middle-sized town in south Germany. During two years of sampling, 13,511 insect specimens of the orders Heteroptera, Hymenoptera, Coleoptera and Diptera were caught from their winter stands. The specimens were assigned to 120 families and 140 taxonomic species were determined from the orders Heteroptera, Coleoptera and Diptera and 324 morphotypes from the orders Hymenoptera, Coleoptera and Diptera. The data indicate the importance of winter fallows for insect hibernation. Unmown meadows offer additional plant structures in winter (flower heads, stems, tufts and leaves) that are absent from mown ones. This increased structural diversity results in both higher species diversity and numbers of insect individuals during spring emergence. The results of this study thus emphasise the value of unmown structures for insect conservation and suggest a mosaic-like cutting maintenance of meadows, way- and river-sides and other green infrastructure in both the urban area and the open landscape

Supplementary material 1 from: Unterweger P, Klammer J, Unger M, Betz O (2018) Insect hibernation on urban green land: a winter adapted mowing regime as a management tool for insect conservation. BioRisk 13: 1-29. https://doi.org/10.3897/biorisk.13.22316

Insect conservation is challenging on various ecological scales. One largely neglected aspect is the quality of undisturbed hibernation sites. This study aims to fill a lack of knowledge concerning insect hibernation on uncut meadows persisting in urban green spaces during the winter season in a middle-sized town in south Germany. During two years of sampling, 13,511 insect specimens of the orders Heteroptera, Hymenoptera, Coleoptera and Diptera were caught from their winter stands. The specimens were assigned to 120 families and 140 taxonomic species were determined from the orders Heteroptera, Coleoptera and Diptera and 324 morphotypes from the orders Hymenoptera, Coleoptera and Diptera. The data indicate the importance of winter fallows for insect hibernation. Unmown meadows offer additional plant structures in winter (flower heads, stems, tufts and leaves) that are absent from mown ones. This increased structural diversity results in both higher species diversity and numbers of insect individuals during spring emergence. The results of this study thus emphasise the value of unmown structures for insect conservation and suggest a mosaic-like cutting maintenance of meadows, way- and river-sides and other green infrastructure in both the urban area and the open landscape

Climbing as an Add-On Treatment Option for Patients with Severe Anxiety Disorders and PTSD: Feasibility Analysis and First Results of a Randomized Controlled Longitudinal Clinical Pilot Trial

Background: Exercise has considerable effects on physical and psychological health. Anxiolytic effects of climbing exercise have been found in people suffering from depression. However, there are no studies on patients with severe anxiety disorders or post-traumatic stress disorder (PTSD) practicing climbing as add-on treatment. Additionally, many studies on physical therapy fail to use adequate active control groups. Therefore, this study aimed to investigate the feasibility of a four-week climbing exercise program for patients with anxiety disorders or PTSD in comparison to a standard exercise treatment and a social control group. Methods: Outpatients diagnosed with anxiety disorders or PTSD (F 40, F 41, F 43.1 according to ICD-10) were randomly assigned to (a) climbing exercise (n = 27), (b) Nordic walking exercise (n = 23), or (c) control condition (n = 23) providing the same amount of social contact for eight sessions of 90 minutes each. Psychological parameters (symptom severity, worry symptoms, self-efficacy, quality of life) and biological parameters were assessed at the beginning and at the end of the four-week program. Additionally, follow-up assessments were conducted three and six months after the program ended. Results: Sixty outpatients (75% female) aged 18–65 years with a longstanding history of a mental disorder (>10 years) and classified as treatment-resistant (95%) and with averaging 3.8 psychiatric comorbidities completed the pilot trial. After participation, symptoms of anxiety disorders were significantly reduced (p = 0.003), and health-related characteristics significantly improved (depression symptoms: p < 0.001, worry symptoms: p < 0.001, self-efficacy: p < 0.001, quality of life-physical health: p = 0.002, quality of life-psychological health: p = 0.006) in all groups. The feasibility of conducting climbing exercises for the patient groups could be demonstrated, and a general acceptance in the groups was recorded. No significant time-by-group interactions were found. At the completion of the program, psychological parameters improved, while biological parameters remained the same in all three groups. Conclusions: Participation in the climbing group as well as in Nordic walking and social contact groups demonstrated beneficial results in patients with anxiety disorders and PTSD with severe mental burden. Nevertheless, climbing did not show any additional clinically relevant benefits compared to Nordic walking or social contact. Studies with larger sample sizes and qualitative insights are needed to further evaluate the possible benefits of climbing in this population

Comparative analysis of nanosystems' effects on human endothelial and monocytic cell functions.

International audienceThe objective of our work was to investigate the effects of different types of nanoparticles on endothelial (HUVEC) and monocytic cell functions. We prepared and tested 14 different nanosystems comprising liposomes, lipid nanoparticles, polymer, and iron oxide nanoparticles. Some of the tested nanosystems contained targeting, therapeutic, or contrast agent(s). The effect of particles (0-400 mu g/mL) on endothelial-monocytic cell interactions in response to TNF-alpha was investigated using an arterial bifurcation model and dynamic monocyte adhesion assay. Spontaneous HUVEC migration (0-100 mu g/mL nanoparticles) and chemotaxis of monocytic cells towards MCP-1 in presence of particles (0-400 mu g/mL) were determined using a barrier assay and a modified Boyden chamber assay, respectively. Lipid nanoparticles dose-dependently reduced monocytic cell chemotaxis and adhesion to activated HUVECs. Liposomal nanoparticles had little effect on cell migration, but one formulation induced monocytic cell recruitment by HUVECs under non-uniform shear stress by about 50%. Fucoidan-coated polymer nanoparticles (25-50 mu g/mL) inhibited HUVEC migration and monocytic cell chemotaxis, and had a suppressive effect on monocytic cell recruitment under non-uniform shear stress. No significant effects of iron oxide nanoparticles on monocytic cell recruitment were observed except lauric acid and human albumin-coated particles which increased endothelial-monocytic interactions by 60-70%. Some of the iron oxide nanoparticles inhibited HUVEC migration and monocytic cell chemotaxis. These nanoparticle-induced effects are of importance for vascular cell biology and function and must be considered before the potential clinical use of some of the analyzed nanosystems in cardiovascular applications

The Impact of Iron Dyshomeostasis and Anaemia on Long-Term Pulmonary Recovery and Persisting Symptom Burden after COVID-19: A Prospective Observational Cohort Study

Coronavirus disease 2019 (COVID-19) is frequently associated with iron dyshomeostasis. The latter is related to acute disease severity and COVID-19 convalescence. We herein describe iron dyshomeostasis at COVID-19 follow-up and its association with long-term pulmonary and symptomatic recovery. The prospective, multicentre, observational cohort study “Development of Interstitial Lung Disease (ILD) in Patients With Severe SARS-CoV-2 Infection (CovILD)” encompasses serial extensive clinical, laboratory, functional and imaging evaluations at 60, 100, 180 and 360 days after COVID-19 onset. We included 108 individuals with mild-to-critical acute COVID-19, whereas 75% presented with severe acute disease. At 60 days post-COVID-19 follow-up, hyperferritinaemia (35% of patients), iron deficiency (24% of the cohort) and anaemia (9% of the patients) were frequently found. Anaemia of inflammation (AI) was the predominant feature at early post-acute follow-up, whereas the anaemia phenotype shifted towards iron deficiency anaemia (IDA) and combinations of IDA and AI until the 360 days follow-up. The prevalence of anaemia significantly decreased over time, but iron dyshomeostasis remained a frequent finding throughout the study. Neither iron dyshomeostasis nor anaemia were related to persisting structural lung impairment, but both were associated with impaired stress resilience at long-term COVID-19 follow-up. To conclude, iron dyshomeostasis and anaemia are frequent findings after COVID-19 and may contribute to its long-term symptomatic outcome