Claire Oswald
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View article: Out of the Forest and Into the Concrete Jungle: Challenges, Opportunities, and Innovations in Urban Hydrology
Out of the Forest and Into the Concrete Jungle: Challenges, Opportunities, and Innovations in Urban Hydrology Open
Urbanization markedly alters the movement, storage, and quality of water resources, and two‐thirds of the global population will live in urban areas by 2050. In the context of this accelerating urbanization and the compounding effects of c…
View article: Chloride concentration dynamics in wetlands in the Greater Toronto Area and impacts on pool-breeding amphibians
Chloride concentration dynamics in wetlands in the Greater Toronto Area and impacts on pool-breeding amphibians Open
Wetlands provide some of the highest-valued ecosystem services and offer critical habitat to various species in the Greater Toronto Area (GTA). Despite their significance, their extent in the region has declined drastically and continues t…
View article: One for all and all for one health: Harmonizing SARS-CoV-2 wastewater surveillance results across a laboratory network
One for all and all for one health: Harmonizing SARS-CoV-2 wastewater surveillance results across a laboratory network Open
Reliable and comparable data from multiple laboratories are essential for networks relying on reverse transcription quantitative polymerase chain reaction (RT-qPCR)-based surveillance of severe acute respiratory syndrome coronavirus 2 (SAR…
View article: Identification of sentinel upstream community sites for wastewater surveillance of SARS-CoV-2 in a large urban area
Identification of sentinel upstream community sites for wastewater surveillance of SARS-CoV-2 in a large urban area Open
Wastewater-based surveillance (WBS) captures the presence of disease in a community of people regardless of symptom status and supports public health interventions to mitigate the spread of disease. Wastewater-based surveillance can be app…
View article: Variability of Clinical Metrics in Small Population Communities Drive Perceived Wastewater and Environmental Surveillance Data Quality: Ontario, Canada-Wide Study
Variability of Clinical Metrics in Small Population Communities Drive Perceived Wastewater and Environmental Surveillance Data Quality: Ontario, Canada-Wide Study Open
The emergence of COVID-19 in Canada has led to over 4.9 million cases and 59,000 deaths by May 2024. Traditional clinical surveillance metrics (hospital admissions and clinical laboratory-positive cases) were complemented with wastewater a…
View article: Applications of 3D printing in physical geography education and urban visualization
Applications of 3D printing in physical geography education and urban visualization Open
Through decreasing hardware costs and novel areas of application, three-dimensional (3D) printing has become exceedingly popular in recent years. Starting with a project focused on public education about urban hydrology, we explored the us…
View article: Applications of 3D printing in physical geography education and urban visualization
Applications of 3D printing in physical geography education and urban visualization Open
Through decreasing hardware costs and novel areas of application, three-dimensional (3D) printing has become exceedingly popular in recent years. Starting with a project focused on public education about urban hydrology, we explored the us…
View article: Salt to Stream: A Process-Based Integrated Watershed Model for Urban Stream Chloride from Winter Salts Using Swmm
Salt to Stream: A Process-Based Integrated Watershed Model for Urban Stream Chloride from Winter Salts Using Swmm Open
View article: Urban wastewater contains a functional human antibody repertoire of mucosal origin
Urban wastewater contains a functional human antibody repertoire of mucosal origin Open
Wastewater-based surveillance of human disease offers timely insights to public health, helping to mitigate infectious disease outbreaks and decrease downstream morbidity and mortality. These systems rely on nucleic acid amplification test…
View article: Isotope-based source assessment of water flowing from storm sewer systems to a receiving river during dry weather periods
Isotope-based source assessment of water flowing from storm sewer systems to a receiving river during dry weather periods Open
Urban stormwater management systems, particularly storm sewers, are critical for managing runoff in urban areas. These systems are designed to function during wet weather events; however, field-based observations of these systems suggest t…
View article: Reconceptualizing threshold‐mediated runoff responses: A case study from the Humber River watershed, Ontario, Canada
Reconceptualizing threshold‐mediated runoff responses: A case study from the Humber River watershed, Ontario, Canada Open
Watershed‐scale runoff responses are driven by various factors including climate, geology, soils, topography and landcover. They are often threshold‐mediated, expressing significant changes in hydrologic behaviour at critical moments in ti…
View article: SARS-CoV-2 viral titer measurements in Ontario, Canada wastewaters throughout the COVID-19 pandemic
SARS-CoV-2 viral titer measurements in Ontario, Canada wastewaters throughout the COVID-19 pandemic Open
During the COVID-19 pandemic, the Province of Ontario, Canada, launched a wastewater surveillance program to monitor SARS-CoV-2, inspired by the early work and successful forecasts of COVID-19 waves in the city of Ottawa, Ontario. This man…
View article: Urban wastewater contains a functional human antibody repertoire of mucosal origin
Urban wastewater contains a functional human antibody repertoire of mucosal origin Open
Wastewater-based surveillance of human disease offers timely insights to public health, helping to mitigate infectious disease outbreaks and decrease downstream morbidity and mortality. These systems rely on nucleic acid amplification test…
View article: Surveillance de la COVID-19 dans les eaux usées des refuges : une stratégie créative pour un environnement complexe
Surveillance de la COVID-19 dans les eaux usées des refuges : une stratégie créative pour un environnement complexe Open
Les personnes sans-abri présentent des taux disproportionnés de morbidité et de mortalité dues à la maladie à coronavirus 2019 (COVID-19) par rapport à ceux de la population générale, et les refuges pour sans-abri contribuent largement à c…
View article: Wastewater surveillance for COVID-19 in shelters: A creative strategy for a complex setting
Wastewater surveillance for COVID-19 in shelters: A creative strategy for a complex setting Open
People experiencing homelessness experience disproportionate rates of morbidity and mortality from coronavirus disease 2019 (COVID-19) compared to the general population and shelters for people experiencing homelessness are a major contrib…
View article: Real-time evaluation of signal accuracy in wastewater surveillance of pathogens with high rates of mutation
Real-time evaluation of signal accuracy in wastewater surveillance of pathogens with high rates of mutation Open
View article: Editorial: Biogeochemical dynamics in urban systems: interactions, feedbacks and cumulative effects
Editorial: Biogeochemical dynamics in urban systems: interactions, feedbacks and cumulative effects Open
EDITORIAL article Front. Environ. Sci., 28 November 2023Sec. Biogeochemical Dynamics Volume 11 - 2023 | https://doi.org/10.3389/fenvs.2023.1338537
View article: Antecedent moisture conditions control mercury and dissolved organic carbon concentration dynamics in a boreal headwater catchment
Antecedent moisture conditions control mercury and dissolved organic carbon concentration dynamics in a boreal headwater catchment Open
The fate and transport of mercury (Hg) deposited on forested upland soils depends on the biogeochemical and hydrological processes occurring in the soil landscape. In this study, total Hg (THg) and dissolved organic carbon (DOC) concentrat…
View article: Antecedent moisture conditions control mercury and dissolved organic carbon concentration dynamics in a boreal headwater catchment
Antecedent moisture conditions control mercury and dissolved organic carbon concentration dynamics in a boreal headwater catchment Open
The fate and transport of mercury (Hg) deposited on forested upland soils depends on the biogeochemical and hydrological processes occurring in the soil landscape. In this study, total Hg (THg) and dissolved organic carbon (DOC) concentrat…
View article: Wastewater-Based Epidemiology of SARS-CoV-2 and Other Respiratory Viruses: Bibliometric Tracking of the Last Decade and Emerging Research Directions
Wastewater-Based Epidemiology of SARS-CoV-2 and Other Respiratory Viruses: Bibliometric Tracking of the Last Decade and Emerging Research Directions Open
The COVID-19 pandemic has prompted an overwhelming surge in research investigating different aspects of the disease and its causative agent. In this study, we aim to discern research themes and trends in the field of wastewater-based epide…
View article: Trends and legacy of freshwater salinization: untangling over 50 years of stream chloride monitoring
Trends and legacy of freshwater salinization: untangling over 50 years of stream chloride monitoring Open
Excessive use of road salts to maintain safe winter travel conditions leads to increasing chloride (Cl) concentrations in streams, damaging the structure and function of freshwater ecosystems. Long-term increasing stream Cl trends are gene…
View article: Trends and legacy of freshwater salinization: untangling over 50 years of stream chloride monitoring
Trends and legacy of freshwater salinization: untangling over 50 years of stream chloride monitoring Open
Excessive use of road salts to maintain safe winter travel conditions leads to increasing chloride (Cl) concentrations in streams, damaging the structure and function of freshwater ecosystems. Long-term increasing stream Cl trends are gene…
View article: Influence of Stormwater Management Ponds on Chloride Concentration Dynamics in Headwater Streams
Influence of Stormwater Management Ponds on Chloride Concentration Dynamics in Headwater Streams Open
View article: Building Cross-Site and Cross-Network collaborations in critical zone science
Building Cross-Site and Cross-Network collaborations in critical zone science Open
The critical zone (CZ) includes natural and anthropogenic environments, where life, energy and matter cycles combine in complex interactions in time and space. Critical zone observatories (CZOs) have been established around the world, yet …
View article: Early identification of a COVID-19 outbreak detected by wastewater surveillance at a large homeless shelter in Toronto, Ontario
Early identification of a COVID-19 outbreak detected by wastewater surveillance at a large homeless shelter in Toronto, Ontario Open
Setting Toronto (Ontario, Canada) is a large urban centre with a significant population of underhoused residents and several dozen shelters for this population with known medical and social vulnerabilities. A sizeable men’s homeless shelte…
View article: Total and dissolved phosphorus losses from agricultural headwater streams during extreme runoff events
Total and dissolved phosphorus losses from agricultural headwater streams during extreme runoff events Open
Eutrophication continues to be a concerning global water quality issue. Managing and mitigating harmful algal blooms demands clear information on the conditions promoting large phosphorus losses from contributing watersheds. Of particular …
View article: Metagenomics of Wastewater Influent from Wastewater Treatment Facilities across Ontario in the Era of Emerging SARS-CoV-2 Variants of Concern
Metagenomics of Wastewater Influent from Wastewater Treatment Facilities across Ontario in the Era of Emerging SARS-CoV-2 Variants of Concern Open
We report metagenomic sequencing analyses of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA in composite wastewater influent from 10 regions in Ontario, Canada, during the transition between Delta and Omicron variants of …
View article: High-frequency observations reveal acute chloride pulses and chloride legacy effects in an urbanizing watershed impacted by road salting
High-frequency observations reveal acute chloride pulses and chloride legacy effects in an urbanizing watershed impacted by road salting Open
<p>In watersheds impacted by urban growth and road salt usage, increasing stream chloride (Cl<sup>-</sup>) concentrations are well-documented. Peaks in stream Cl<sup>-</sup> concentrations that exceed chronic …
View article: Community Surveillance of Omicron in Ontario: Wastewater-based Epidemiology Comes of Age.
Community Surveillance of Omicron in Ontario: Wastewater-based Epidemiology Comes of Age. Open
Wastewater-based surveillance of SARS-CoV-2 RNA has been implemented at building, neighbourhood, and city levels throughout the world. Implementation strategies and analysis methods differ, but they all aim to provide rapid and reliable in…
View article: Community Surveillance of Omicron in Ontario: Wastewater-based Epidemiology Comes of Age.
Community Surveillance of Omicron in Ontario: Wastewater-based Epidemiology Comes of Age. Open