Ten Bee Species New to Green Roofs in the Chicago Area

Green roofs increasingly provide habitat for many insects in urban environments. Pollinators such as bees may utilize foraging and nesting resources provided by green roofs but few studies have documented which species occur in these novel habitats. This study identified bees from 26 species, 11 genera and 5 families collected from 7 green roofs using pan trapping methods over 2 years. Ten of these species have not previously been recorded on green roofs in the Chicago region. Although the majority of bee species collected were solitary, soil-nesting, and native to Illinois, the proportion of exotic species was high compared to previous collections from Chicago area green roofs and urban parks. Urban green roofs may enhance populations of both native and exotic bees, but their ability to support the same range of native diversity recorded from other urban habitats requires further investigation

Ten Bee Species New to Green Roofs in the Chicago Area

Green roofs increasingly provide habitat for many insects in urban environments. Pollinators such as bees may utilize foraging and nesting resources provided by green roofs but few studies have documented which species occur in these novel habitats. This study identified bees from 26 species, 11 genera and 5 families collected from 7 green roofs using pan trapping methods over 2 years. Ten of these species have not previously been recorded on green roofs in the Chicago region. Although the majority of bee species collected were solitary, soil-nesting, and native to Illinois, the proportion of exotic species was high compared to previous collections from Chicago area green roofs and urban parks. Urban green roofs may enhance populations of both native and exotic bees, but their ability to support the same range of native diversity recorded from other urban habitats requires further investigation

Sedimentary Accumulation of Black Carbon on the East Coast of The United States

The occurrence, trends and sources of soot black carbon (BC) in coastal sediments are poorly understood, particularly during the Anthropocene. Two sediment cores, covering the last ∼100 years from the US East Coast, off North Carolina and in the Florida Straits, were analyzed for organic carbon (OC), BC fluxes and BC sources. BC fluxes were 0.1 g cm−2 year−1 at both sites and accounted for 8%–22% of total OC. Carbon stable isotope values indicated OC to be of marine origin, while the BC was mostly terrestrially derived, C3-plant material. Radiocarbon values revealed BC originating mostly from fossil fuels or pre-aged carbon (fraction modern of 14%–31%) at North Carolina, while in the Florida Strait the BC was mostly derived from biomass burning (fraction modern of 70%–74%), in-line with continental (NC) or marine (FS) air mass origins. Ratios of polycyclic aromatic hydrocarbons broadly supported different BC sources at the two sites

Biologic Cycling of Silica across a Grassland Bioclimosequence

The dynamics of biologic Si cycling in grassland ecosystems are largely unknown and likely to impact mineral weathering rates regionally and diatom productivity globally; key regulatory processes in the global Si cycle are closely tied to the global carbon cycle. Across a bioclimatic sequence spanning major grassland ecosystems in the Great Plains, soil biogenic silica depth distributions are similar to that of soil organic carbon; however, unlike soil organic carbon, quantities of soil biogenic silica decrease with increasing precipitation, despite an increase in annual biogenic inputs through litterfall across the same gradient. Though comprising only 1–3% of the total Si pool, faster turnover of biogenic Si and annual cycling by grasses should positively impact mineral dissolution. Our results suggest that the largest reservoir of biogenic Si in terrestrial ecosystems resides in soils, and emphasize the potential significance of grasslands in the global biogeochemical cycle of Si

Georgia Library Association - Technical Services Interest Group

Published in Georgia Library Quarterl

Setting policy priorities to address eating disorders and weight stigma: views from the field of eating disorders and the US general public

Background: The prevalence and health consequences of eating disorders and weight stigmatization have prompted increasing discussion of potential policy actions to address these public health issues. The present study aimed to assess support for policy strategies to address eating disorders and weight stigmatization among the general public and relevant health professionals. Methods: An Internet survey was fielded to a national sample of 944 US adults and 1,420 members of professional organizations specializing in eating disorders to examine their support for 23 potential policy strategies to address eating disorders and weight stigma. Participants also rated policy actions according to their potential for positive impact and feasible implementation. Results: Support for the majority of health and social policies was high in both samples. For example, strategies to 1) improve school-based health curriculum to include content aimed at preventing eating disorders, 2) require training for educators and health providers on the prevention and early identification of eating disorders, and 3) implement school-based anti-bullying policies that that protect students from being bullied about their weight, were supported by over two-thirds of participants. Conclusions: Our findings suggest that both health and social policy actions will be important in broader policy initiatives to address eating disorders and weight stigma

The Figure in Art: Selections from the Gettysburg College Collection

The Figure in Art: Selections from the Gettysburg College Collection is the second annual exhibition curated by students enrolled in the Art History Methods class. This exhibition is an exciting academic endeavor and provides an incredible opportunity for engaged learning, research, and curatorial experience. The eleven student curators are Diane Brennan, Rebecca Duffy, Kristy Garcia, Megan Haugh, Dakota Homsey, Molly Lindberg, Kathya Lopez, Kelly Maguire, Kylie McBride, Carolyn McBrady and Erica Schaumberg. Their research presents a multifaceted view of the representation of figures in various art forms from different periods and cultures.https://cupola.gettysburg.edu/artcatalogs/1017/thumbnail.jp

Antiviral drug discovery : preparing for the next pandemic

Acknowledgements The authors also gratefully acknowledge financial support from the South African Medical Research Council (MRC) with funds received from the South African National Department of Health and the UK Government's Newton Fund (R. A. D., RL. M. G., K. C.), the UK Engineering and Physical Sciences Research Council EQATA (R. J. M. G.), the UK Global Challenge Research Fund (R. J. M. G., R. A. D.), the University of Cape Town (K. C.) and the South African Research Chairs Initiative of the Department of Science and Innovation, administered through the South African National Research Foundation (NRF) to K. C. (UID: 64767) and R. A. D. (UID: 87583). C. S. A. acknowledges financial support for SARS-CoV-2/Covid-19 research from UKMRC (CVG-1725-2020) and UKRI-DHSC (MR/Vo28464/1). The authors acknowledge Bronwyn Tweedie of the Rhodes University Print Services Unit who provided the graphics for Fig. 1 and thank Gordon Cragg for his insightful comments and encouragement during the preparation of this manuscript.Peer reviewedPublisher PD