Spatiotemporal land use change and environmental degradation surrounding CAFOs in Michigan and North Carolina

Miralha, Lorrayne; Muenich, Rebecca Logsdon; Schaffer‐Smith, Danica; Myint, Soe W.

doi:10.1016/j.scitotenv.2021.149391

Cited by 21 publications

(7 citation statements)

References 59 publications

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“…Within the U.S., the southeast has experienced the most rapid recent land use change, particularly forest loss to suburban sprawl (Gaines et al., 2022; Homer et al., 2020; Sanchez et al., 2020; Sleeter et al., 2018). NC, and particularly the CFRB, has some of the highest urban and suburban growth rates in the country (U.S. Census Bureau, 2020) and is undergoing agricultural intensification, notably via expansion of swine CAFOs from the 1980s through the early 1990s and ongoing growth of poultry CAFOs (Environmental Working Group & Waterkeeper Alliance, 2016; Miralha et al., 2021; Montefiore et al., 2022).…”

Section: Resultsmentioning

confidence: 99%

Landscape Pollution Source Dynamics Highlight Priority Locations for Basin‐Scale Interventions to Protect Water Quality Under Hydroclimatic Variability

Schaffer‐Smith,

DeMeester,

Tong

et al. 2023

Earth's Future

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Extreme weather is associated with a variety of water quality issues that can pose harm to humans and aquatic ecosystems. Under dry conditions, contaminants become concentrated in streams with a greater potential for harmful algal blooms, while wet conditions can cause flooding and broadcast pollution. Developing interventions to improve water quality in a changing climate requires a better understanding of how hydroclimatic variability affects watershed processes, and which places are most vulnerable. We developed a Soil and Water Assessment Tool model of the Cape Fear River Basin (CFRB) in North Carolina, USA, representing contemporary land use, point and non‐point sources, and weather conditions from 1979 to 2019. The CFRB is a large, complex river basin undergoing urbanization and agricultural intensification, with a history of droughts and floods. To identify intervention priorities, we developed a Water Quality Risk Index (WQRI) using the average and variability of contaminant loads across dry, normal and wet conditions. The landscape generally contributed the majority of pollutants (e.g., via erosion, fertilizer and manure applications), including 90.1% of sediment, 83.2% of total nitrogen, and 52.4% of total phosphorus at the City of Wilmington's drinking water intake, yet point sources were influential during dry periods. Approximately 16% of the watershed contributed most of the pollutants across conditions—these represent priority locations for interventions such as restoration, urban, or agricultural best management practices. The WQRI approach considering risks to water quality across conditions can help identify locations where interventions are more likely to improve water quality under climate change.

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Section: Resultsmentioning

confidence: 99%

Landscape Pollution Source Dynamics Highlight Priority Locations for Basin‐Scale Interventions to Protect Water Quality Under Hydroclimatic Variability

Schaffer‐Smith,

DeMeester,

Tong

et al. 2023

Earth's Future

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show abstract

“…NC, and particularly the Cape Fear Basin, has some of the highest urban and suburban growth rates in the country (U.S. Census Bureau, 2020) and is undergoing agricultural intensification, notably via expansion of swine CAFOs from the 1980s through the early 1990s and ongoing growth of poultry CAFOs (Environmental Working Group & Waterkeeper Alliance, 2016;Miralha et al, 2021;Montefiore et al, 2022).…”

Section: Model Calibration and Validation Resultsmentioning

confidence: 99%

Landscape pollution source dynamics highlight priority locations for basin-scale interventions to protect water quality under extreme events

Schaffer‐Smith¹,

DeMeester²,

Tong

et al. 2022

Preprint

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Extreme weather conditions are associated with a variety of water quality issues that can pose harm to humans and aquatic ecosystems. Under dry extremes, contaminants become more concentrated in streams with a greater potential for harmful algal blooms, while wet extremes can cause flooding and broadcast pollution. Developing appropriate interventions to improve water quality in a changing climate requires a better understanding of how extremes affect watershed processes, and which places are most vulnerable. We developed a Soil and Water Assessment Tool model of the Cape Fear River Basin (CFRB) in North Carolina, USA, representing contemporary land use, point and non-point sources, and weather conditions from 1979 to 2019. The CFRB is a large and complex river basin undergoing urbanization and agricultural intensification, with a history of extreme droughts and floods, making it an excellent case study. To identify intervention priorities, we developed a Water Quality Risk Index (WQRI) using the load average and load variability across normal conditions, dry extremes, and wet extremes. We found that the landscape generated the majority of contaminants, including 90.1% of sediment, 85.4% of total nitrogen, and 52.6% of total phosphorus at the City of Wilmington's drinking water intake. Approximately 16% of the watershed contributed most of the pollutants across conditions-these represent high priority locations for interventions. The WQRI approach considering risks to water quality across different weather conditions can help identify locations where interventions are more likely to improve water quality under climate change.

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“…Additionally, we only included studies that sampled groundwater with respect to proximity to an active animal feeding operation and excluded studies that solely focused on manure application without reference to a specific facility. Liquid waste from swine operations is typically disposed of in the immediate vicinity of the facilities, while dry waste from poultry operations can be transported up to 15 km before being applied to fields (Miralha et al 2021 ). Most studies in our review sampled groundwater within 2–3 km from facilities; while this captures most instances of liquid manure application, we may have not captured groundwater risks associated with the application of dry manure at more distant locations.…”

Section: Discussionmentioning

confidence: 99%

Do animal husbandry operations contaminate groundwater sources with antimicrobial resistance: systematic review

Meyer,

Price,

Ercumen

2024

Environ Sci Pollut Res

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Antimicrobial resistance (AMR) is a critical global health concern. Animal husbandry operations are AMR hotspots due to heavy antibiotic use and dissemination of animal waste into the environment. In this systematic review, we examined the impact of swine, poultry, and cattle operations on AMR in groundwater. We searched PubMed, Web of Science, CAB Direct, and the North Carolina State University Agricultural and Environmental Science databases in June 2022. The search returned 2487 studies. Of the 23 eligible studies, 17 were conducted in high-income countries (primarily the USA, also Canada, Saudi Arabia, Cyprus), and 6 were conducted in a single upper-middle-income country (China). Studies investigated facilities for swine (13), poultry (4), cattle (3), and multiple types of animals (3). The sampling distance ranged from onsite to > 20 km from facilities; the majority of studies (19) sampled onsite. Most studies collected samples from monitoring wells; only 5 studies investigated private drinking water wells. AMR in groundwater was associated with animal husbandry operations in 74% (17/23) of all studies, 65% (11/17) of studies in high-income countries, and 100% (6/6) of studies in China. Contamination was mostly found in onsite wells, especially downgradient of waste lagoons, but also in offsite private wells up to 2–3 km away. Few studies reported weather data, but AMR contamination appeared to increase with rainy conditions. Future studies should sample private wells at varying distances from animal husbandry operations under different weather conditions and include low- and middle-income countries where food animal production is intensifying.

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Spatiotemporal land use change and environmental degradation surrounding CAFOs in Michigan and North Carolina

Cited by 21 publications

References 59 publications

Landscape Pollution Source Dynamics Highlight Priority Locations for Basin‐Scale Interventions to Protect Water Quality Under Hydroclimatic Variability

Landscape Pollution Source Dynamics Highlight Priority Locations for Basin‐Scale Interventions to Protect Water Quality Under Hydroclimatic Variability

Landscape pollution source dynamics highlight priority locations for basin-scale interventions to protect water quality under extreme events

Do animal husbandry operations contaminate groundwater sources with antimicrobial resistance: systematic review

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