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A consideration of the site-specific spatial experience created by urban trees and their cultural dimensions can enrich climate adaptive tree planting strategies in Winnipeg, a city of 850,000 in the central prairies of Canada. The paper begins with an introduction to traditional urban tree planting types and analyses the range of tree planting techniques that currently define public spaces in Winnipeg. A review of the recently published Urban Forest Strategy for Winnipeg highlights current strengths and challenges to climate change related tree planting in the city. Urban tree planting strategies and practices demonstrate a focus on quantifiable goals such as canopy coverage, number of trees planted or ecosystem services, with little reference to how trees define places. However, cities are constituted by the visible forest -the form and patterns of how trees are planted and the spaces they create. They are also shaped by the invisible forest , the diverse ways in which trees evoke different functions, values, and modes of occupation to different people at different times. Two basic approaches to urban tree planting will enrich climate-related tree planting initiatives by synthesizing the visible and invisible dimensions of the urban forest: Prioritizing the collective planting of trees as opposed to the single specimen and acknowledging the cultural dimensions of trees. Two design propositions from students at University of Manitoba demonstrate how trees can articulate the diverse ways people interact with trees through their spatial configuration and planting techniques. One draws upon tree types that acknowledge local agricultural tree planting strategies and the second responds to historical and contemporary Indigenous relationships to riparian trees. Acknowledging the planting of trees as a complex interplay between spatial, ecological, and cultural specificity allows for the communication of new values for the design and stewardship of urban trees and the provision of shade in a climate adaptive city. [ABSTRACT FROM AUTHOR]

Background: Invasive pneumococcal disease (IPD, Streptococcus pneumoniae) has been a nationally notifiable disease in Canada since 2000. The use of conjugate vaccines has caused a shift in the distribution of serotypes over time. This report is a summary of the demographics, serotypes and antimicrobial resistance of IPD isolates collected in Canada in 2021 and 2022. Methods: The National Microbiology Laboratory (NML) of the Public Health Agency of Canada in Winnipeg, Manitoba collaborates with provincial and territorial public health laboratories to conduct national surveillance of IPD. There were 1,999 isolates reported in 2021 and 3,775 isolates in 2022. Serotype was determined by the Quellung reaction or whole-genome sequencing (WGS). Antimicrobial susceptibilities were determined by WGS methods, broth microdilution, or data shared by collaborators in the Canadian Antimicrobial Resistance Alliance program at the University of Manitoba. Population-based IPD incidence rates were obtained through the Canadian Notifiable Disease Surveillance System. Results: The incidence of IPD in Canada was 5.62 cases per 100,000 population in 2021, decreasing from the peak of 10.86 cases per 100,000 population in 2018. Serotypes with increasing trends (p<0.05) between 2018 and 2022 included: 4 (6.1%–12.4%), 9V (1.0%–5.1%) and 12F (4.8%–5.4%). The overall prevalence of PCV13 serotypes increased over the same period (31.2%−41.5%, p<0.05) while the prevalence of non-vaccine types decreased significantly (27.3%–21.5%, p<0.0001). The highest rates of antimicrobial resistance in 2021 and 2022 were seen with clarithromycin (21%, 2021; 24%, 2022) and erythromycin (22%, 2021; 24%, 2022). Multidrug-resistant IPD continued to increase from 2018 to 2022 (6.7%–12.6%, p<0.05). Conclusion: The number of cases of IPD continued to decrease in 2021 in comparison to previous years, however, 2022 saw a return to pre-COVID-19 levels. Disease due to PCV13 serotypes 3, 4, 9V and 19F, as well as non-PCV13 serotypes 12F and 20, is increasing in prevalence. Surveillance of IPD to monitor changing serotype distribution and antimicrobial resistance is essential. [ABSTRACT FROM AUTHOR]