Resilience of stormwater biofilters following the deposition of wildfire residues: Implication on downstream water quality management in wildfire-prone regions

Article Medicine, General & Internal

Cooling cities through urban green infrastructure: a health impact assessment of European cities

Tamara Iungman et al.

Summary: This study shows that urban heat islands have a negative impact on mortality, but increasing tree coverage in cities can help reduce temperatures and prevent premature deaths.

LANCET (2023)

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Article Engineering, Environmental

Self-rescue of nitrogen-cycling bacteria under β-lactam antibiotics stress during managed aquifer recharge (MAR): Microbial collaboration and anti-resistance

Yuanping Fang et al.

Summary: Storing reclaimed water via managed aquifer recharge (MAR) is an effective strategy for alleviating groundwater overdraft and achieving water resource recycling simultaneously. However, the presence of beta-lactam antibiotics in the reclaimed water can have negative impacts on the aquifer system, microbial community, and the prevalence of antibiotic resistance genes (ARGs). In this study, the temporal and spatial attenuation of beta-lactams and nitrogen was investigated during MAR, and the resistance mechanisms and microbial collaboration were elucidated. The results showed that biodegradation was the main pathway for beta-lactam elimination, and the growth of ARGs was influenced by the specific antibiotic present in the water. Nitrogen-cycling bacteria played a crucial role in the aquifer community and showed resistance to antibiotics, contributing to the nitrogen removal in the MAR process.

WATER RESEARCH (2023)

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Article Multidisciplinary Sciences

The impact of small-scale green infrastructure on the affective wellbeing associated with urban sites

Pablo Navarrete-Hernandez et al.

Summary: Investing in small-scale green infrastructure in streetscapes can enhance urban residents' affective perceptions of the local environment. This study examined the impact of such investments on affective perceptions in low, middle, and high-income areas in Santiago, Chile. The results showed that green infrastructure investments can increase positive affect and to a lesser extent, reduce negative affect. However, a minimum of 16% increase in green coverage is required to observe an impact on affective perceptions.

SCIENTIFIC REPORTS (2023)

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Review Environmental Sciences

Wildfire impacts on surface water quality parameters: Cause of data variability and reporting needs

Onja D. Raoelison et al.

Summary: Surface runoff from wildfires can worsen water quality by depositing burned residues and ashes into surface waters. This study analyzes pre- and post-fire water quality data to enhance reporting protocols and identify research opportunities. The analysis shows that wildfire can significantly increase pollutant concentrations, but the extent of increase depends on multiple factors such as sampling time, burned area, water flow rate, and pollutant type.

ENVIRONMENTAL POLLUTION (2023)

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Article Environmental Sciences

Sustainability performance of bioretention systems with various designs

Par Ohrn Sagrelius et al.

Summary: Bioretention systems for urban drainage have received increasing attention as a type of blue-green infrastructure. While there are various design options for these systems, research has mainly focused on their technical impacts on runoff pollution treatment and hydraulic control. This study aimed to evaluate and compare different design elements and bioretention types to better understand their sustainability. The results showed that design features significantly affect bioretention performance, but no single design configuration excelled in all criteria. The findings provide valuable insights for assessing design configurations that best suit specific needs for each bioretention implementation.

JOURNAL OF ENVIRONMENTAL MANAGEMENT (2023)

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Article Multidisciplinary Sciences

Climate warming increases extreme daily wildfire growth risk in California

Patrick T. Brown et al.

Summary: This study uses machine learning to investigate the impact of temperature on the risk of extreme daily wildfire growth in California, and finds that temperature primarily influences the risk through its effect on fuel moisture. The research shows that anthropogenic warming has increased the expected frequency of extreme daily wildfire growth and the extent of this increase varies for different fires. When subjected to projected future conditions, the frequency of extreme daily wildfire growth events is expected to further increase, with larger increases under higher emissions scenarios.

NATURE (2023)

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Article Environmental Sciences

Biological Filtration is Resilient to Wildfire Ash-Associated Organic Carbon Threats to Drinking Water Treatment

Emma A. J. Blackburn et al.

Summary: Water with elevated/altered levels of dissolved organic matter (DOM) after wildfire can be difficult to treat. This study investigated the ability of biological treatment to remove postfire dissolved organic carbon (DOC) resulting from wildfire ash. The results showed that the biofilter effectively removed turbidity and DOC in stable source water, and the biofilters buffered the increase in water extractable organic matter caused by ash addition. However, the balance between readily removed and recalcitrant fractions of DOM may affect the operational resilience of the biofilter.

ACS ES&T WATER (2023)

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Article Engineering, Environmental

Wildfire impact on disinfection byproduct precursor loading in mountain streams and rivers

Kenneth Hickenbottom et al.

Summary: The study investigated the short-term and long-term impacts of the Caldor and Mosquito Fires on water quality and dissolved organic matter. The results showed significant degradation of water quality in the burned watersheds, including increases in dissolved organic carbon and nitrogen, as well as higher concentrations of disinfection byproduct precursors.

WATER RESEARCH (2023)

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Article Multidisciplinary Sciences

Importance of subsurface water for hydrological response during storms in a post-wildfire bedrock landscape

Abra Atwood et al.

Summary: Wildfire alters the hydrologic cycle, affecting water supply and hazards such as flooding and debris flows. This study in the San Gabriel Mountains, California, USA, examines the hydrologic response during storms in burned catchments. The results show increased infiltration and storage of subsurface water, leading to higher streamflow during storms.

NATURE COMMUNICATIONS (2023)

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Review Environmental Sciences

From burned slopes to streams: how wildfire affects nitrogen cycling and retention in forests and fire-prone watersheds

Rebecca N. Gustine et al.

Summary: Wildfires play a significant role in nitrogen cycling and export from terrestrial to aquatic systems, potentially degrading water quality by flushing nitrogen to streams. The extent and duration of postfire nitrogen export and its impact on downstream water quality depend on variations in nitrogen inputs, internal cycling, and outputs before, during, and after fires. Understanding these factors is crucial for predicting how wildfires will affect watershed nitrogen cycling and retention in the future.

BIOGEOCHEMISTRY (2022)

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Article Environmental Sciences

Assessing the role of compound drought and heatwave events on unprecedented 2020 wildfires in the Pantanal

Renata Libonati et al.

Summary: The year 2020 witnessed a catastrophic fire season in the Pantanal, characterized by severe drought and heatwaves. Land-atmosphere feedbacks played a crucial role in the simultaneous occurrence of drought and heatwaves, exacerbating the risk of fire outbreaks. These findings have implications for understanding and predicting similar extreme events.

ENVIRONMENTAL RESEARCH LETTERS (2022)

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Article Multidisciplinary Sciences

Growing impact of wildfire on western US water supply

A. Park Williams et al.

Summary: Streamflow often increases after fire, and this effect has unclear persistence and importance to regional water resources. This study examines 72 forested basins in the western United States (WUS) and finds that multibasin mean streamflow significantly increases in the 6 water years after a fire. The streamflow response is proportional to the fire extent and is significant in all four seasons. Furthermore, historical fire-climate relationships and climate model projections suggest that wildfires will become more frequent in the coming decades, leading to increased regional streamflow.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2022)

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Article Engineering, Environmental

Natural aging of expanded shale, clay, and slate (ESCS) amendment with heavy metals in stormwater increases its antibacterial properties: Implications on biofilter design

Annesh Borthakur et al.

Summary: The adsorption of metals during aging of biofilter media can have a positive impact on pathogen removal, increasing the adsorption capacity and reducing remobilization of attached pathogens during stormwater infiltration.

JOURNAL OF HAZARDOUS MATERIALS (2022)

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Article Environmental Sciences

Submerged zone and vegetation drive distribution of heavy metal fractions and microbial community structure: Insights into stormwater biofiltration system

Yusheng HongE et al.

Summary: Biofiltration system is effective in removing heavy metals from stormwater. This study investigated the microbial community and fractionation of heavy metals in filter media samples. The presence of vegetation and submerged zone affected heavy metal fractions and microbial community structure. The findings contribute to improving multi-metal-contaminated runoff treatment and understanding the impact of design parameters and heavy metal fractionation on microbial community in the biofiltration system.

SCIENCE OF THE TOTAL ENVIRONMENT (2022)

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Article Engineering, Environmental

Polycyclic Aromatic Compounds in Rivers Dominated by Petrogenic Sources after a Boreal Megafire

Colin A. Cooke et al.

Summary: The mining activities and wildfires in northeastern Alberta, Canada have increased the pollution of polycyclic aromatic compounds (PACs) in freshwater ecosystems. Through studying PACs in river water before and after the Fort McMurray wildfire, it was found that petrogenic PACs were the main source, while pyrogenic PACs mainly came from the wash-in of ash during short-term episodes of burned watersheds. This research provides new insights into the impacts of increasing wildfire frequency and severity in this industrialized region.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

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Article Green & Sustainable Science & Technology

Rechargeable stormwater biofilters: In situ regeneration of PFAS removal capacity by using a cationic polymer, polydiallyldimethylammonium chloride

Annesh Borthakur et al.

Summary: This study demonstrates that the in situ application of cationic polymers like polydiallyldimethylammonium chloride (PDADMAC) can regenerate the capacity of filter media to remove short-chain PFAS. Additionally, the application of PDADMAC reduces the release of colloids and prevents the re-entry of adsorbed PFAS into water.

JOURNAL OF CLEANER PRODUCTION (2022)

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Review Environmental Sciences

Wildfire Induces Changes in Receiving Waters: A Review With Considerations for Water Quality Management

M. J. Paul et al.

Summary: Wildfires have increased in frequency and have significant impacts on water quality, including physical, chemical, and biological changes. These effects typically last less than 5 years, but can extend up to 15 years or more in certain cases. Studies on pollutants mobilized from wildfires in urban areas are limited.

WATER RESOURCES RESEARCH (2022)

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Article Environmental Sciences

Zero additional maintenance stormwater biofilters: from laboratory testing to field implementation

Veljko Prodanovic et al.

Summary: Stormwater biofilters are commonly used in urban water management, but require high maintenance. This study proposes the concept of zero additional maintenance (ZAM) biofilters and finds that protective filter media configurations can delay clogging, certain lawn grasses effectively reduce pollutant concentrations, and field monitoring confirms high removal performance of ZAM biofilters.

BLUE-GREEN SYSTEMS (2022)

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Article Environmental Sciences

The season for large fires in Southern California is projected to lengthen in a changing climate

Chunyu Dong et al.

Summary: Machine learning and climate model projections indicate that southern California will experience more frequent large wildfires and a longer fire season in the future. This has significant implications for the biodiversity hotspot and the densely populated region of southern California.

COMMUNICATIONS EARTH & ENVIRONMENT (2022)

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Article Environmental Sciences

Survey of the operational status of twenty-six urban stormwater biofilter facilities in Sweden

Ali Beryani et al.

Summary: This study evaluated the operational status of twenty-six biofilter facilities across nine cities in Sweden, revealing issues such as consistent soil media composition, low hydraulic conductivity, and insufficient ponding volume in some facilities. Poor pre-treatment stages and sediment accumulation were identified as primary causes for operational problems. Suggestions for addressing these design and maintenance issues were also provided.

JOURNAL OF ENVIRONMENTAL MANAGEMENT (2021)

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Article Engineering, Civil

How well do stormwater green infrastructure respond to changing climatic conditions?

Harsha Fowdar et al.

Summary: Urban green infrastructure like biofiltration systems are increasingly used worldwide to enhance urban greening and control stormwater pollution. The effectiveness of treatment depends on climate factors, with different plant species playing a key role in pollutant removal. The study found that plant species have a pollutant-specific contribution to removal and a mix of species can increase system resilience.

JOURNAL OF HYDROLOGY (2021)

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Article Engineering, Environmental

Biochar Selection for Escherichia coli Removal in Stormwater Biofilters

Renan Valenca et al.

Summary: Biochar's capacity to remove pathogens from stormwater is influenced by its surface area, carbon content, ash content, and volatile organic carbon content. The study also found that biochar may continue to remove pathogens after rainfall, highlighting its potential for long-term effectiveness in stormwater treatment.

JOURNAL OF ENVIRONMENTAL ENGINEERING (2021)

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Review Engineering, Environmental

Conventional and amended bioretention soil media for targeted pollutant treatment: A critical review to guide the state of the practice

R. Andrew Tirpak et al.

Summary: This article summarizes the current design BSM specifications adopted by jurisdictions worldwide, compares the performance of conventional and amended BSM, highlights the advantages and limitations of BSM amendments, and identifies challenges for implementing amendments in field conditions.

WATER RESEARCH (2021)

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Article Environmental Sciences

Short-Term Effects of Wildfire Ash on Water Quality Parameters: A Laboratory Approach

Darlan Q. Brito et al.

Summary: This study examined the impact of ash from large-scale wildfires in Brazilian tropical savannahs on water parameters, discovering that water-extractable elements from ash significantly alter water quality parameters, leading to elevated total dissolved solids and conductivity levels, increased pH, and decreased dissolved oxygen concentration.

BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY (2021)

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Review Engineering, Environmental

Perfluoroalkyl acids on suspended particles: Significant transport pathways in surface runoff, surface waters, and subsurface soils

Annesh Borthakur et al.

Summary: Studies show that suspended particles may contain higher concentrations of PFAAs than sediments, indicating they originate from eroded particles upstream rather than sediments. In soils, PFAAs are primarily retained within the top 5 meters below the ground surface, with their distribution varying based on site properties and local weather conditions.

JOURNAL OF HAZARDOUS MATERIALS (2021)

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Article Environmental Sciences

Iron amendments minimize the first-flush release of pathogens from stormwater biofilters*

Maryam Ghavanloughajar et al.

Summary: The addition of iron-based media to biofilters can decrease pathogen leaching during the first flush, improving overall biofilter performance and protecting downstream water quality.

ENVIRONMENTAL POLLUTION (2021)

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Article Environmental Sciences

Projected increases in western US forest fire despite growing fuel constraints

John T. Abatzoglou et al.

Summary: The escalating burned area in western US forests has heightened the need to explore near-term forest-fire area trajectories. Fire-fuel feedbacks may impose constraints on climate-driven trends, but are unlikely to strongly constrain the profound broad-scale increases in forest-fire area by the mid-21st century, highlighting the need for proactive adaptation to increased forest-fire impacts.

COMMUNICATIONS EARTH & ENVIRONMENT (2021)

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Article Engineering, Environmental

Waste-derived compost and biochar amendments for stormwater treatment in bioretention column: Co-transport of metals and colloids

Yuqing Sun et al.

JOURNAL OF HAZARDOUS MATERIALS (2020)

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Review Engineering, Civil

Wildfire impacts on hydrologic ecosystem services in North American high-latitude forests: A scoping review

Francois-Nicolas Robinne et al.

JOURNAL OF HYDROLOGY (2020)

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Microbial quality of surface water and subsurface soil after wildfire

Renan Valenca et al.

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Warmer and Drier Fire Seasons Contribute to Increases in Area Burned at High Severity in Western US Forests From 1985 to 2017

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GEOPHYSICAL RESEARCH LETTERS (2020)

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Climate warming enhancement of catastrophic southern California debris flows

Diandong Ren et al.

Scientific Reports (2020)

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Compaction conditions affect the capacity of biochar-amended sand fi lters to treat road runoff

Maryam Ghavanloughajar et al.

SCIENCE OF THE TOTAL ENVIRONMENT (2020)

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Size-dependent biochar breaking under compaction: Implications on clogging and pathogen removal in biofilters

Huong Le et al.

ENVIRONMENTAL POLLUTION (2020)

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Wildfires Alter Forest Watersheds and Threaten Drinking Water Quality

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Quantifying the temperature dependence of nitrate reduction in woodchip bioreactors: experimental and modeled results with applied case-study

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Post-fire water-quality response in the western United States

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INTERNATIONAL JOURNAL OF WILDLAND FIRE (2018)

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Burned forests impact water supplies

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Reframing the Challenge of Global Wildfire Threats to Water Supplies

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Decreasing fire season precipitation increased recent western US forest wildfire activity

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Dynamics of Clay Particles in Non-vegetated Stormwater Biofilters

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Meta-analysis of field-saturated hydraulic conductivity recovery following wildland fire: Applications for hydrologic model parameterization and resilience assessment

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Changes in the size partitioning of metals in storm runoff following wildfires: Implications for the transport of bioactive trace metals

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Experimental investigation of suspended particles transport through porous media: particle and grain size effect

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Effects of ash-loaded post-fire runoff on the freshwater clam Corbicula fluminea

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Impact of a submerged zone and a carbon source on heavy metal removal in stormwater biofilters

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WATER QUALITY RESEARCH JOURNAL OF CANADA (2000)

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Resilience of stormwater biofilters following the deposition of wildfire residues: Implication on downstream water quality management in wildfire-prone regions

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