Search Results - "Stocker, Matthew D."

Hyperspectral Imaging from a Multipurpose Floating Platform to Estimate Chlorophyll-a Concentrations in Irrigation Pond Water by Kim, Geonwoo, Baek, Insuck, Stocker, Matthew D., Smith, Jaclyn E., Van Tassell, Andrew L., Qin, Jianwei, Chan, Diane E., Pachepsky, Yakov, Kim, Moon S.

“…This study provides detailed information about the use of a hyperspectral imaging system mounted on a motor-driven multipurpose floating platform (MFP) for…”
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Depth-Dependent Concentrations of E. coli in Agricultural Irrigation Ponds by Stocker, Matthew D., Smith, Jaclyn E., Pachepsky, Yakov A.

“…Microbial water quality surveys of irrigation sources are conducted by measuring the concentrations of generic E. coli. The objective of this study was to…”
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Prediction of E. coli Concentrations in Agricultural Pond Waters: Application and Comparison of Machine Learning Algorithms by Stocker, Matthew D, Pachepsky, Yakov A, Hill, Robert L

“…The microbial quality of irrigation water is an important issue as the use of contaminated waters has been linked to several foodborne outbreaks. To expedite…”
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Effects of Sampling Time and Depth on Phytoplankton Metrics in Agricultural Irrigation Ponds by Jaclyn E. Smith, Jennifer L. Wolny, Matthew D. Stocker, Yakov Pachepsky

“…Spatiotemporal variations of phytoplankton populations in agricultural irrigation ponds need to be accounted for in order to properly assess water quality…”
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Examining the Relationship between Phytoplankton Community Structure and Water Quality Measurements in Agricultural Waters: A Machine Learning Application by Jaclyn E. Smith, Jennifer L. Wolny, Robert L. Hill, Matthew D. Stocker, Yakov Pachepsky

“…Phytoplankton community composition has been utilized for water quality assessments of various freshwater sources, but studies are lacking on agricultural…”
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Accounting for the Three-Dimensional Distribution of Escherichia coli Concentrations in Pond Water in Simulations of the Microbial Quality of Water Withdrawn for Irrigation by Stocker, Matthew, Jeon, Dong, Sokolova, Ekaterina, Lee, Hoonsoo, Kim, Moon, Pachepsky, Yakov

“…Evaluating the microbial quality of irrigation water is essential for the prevention of foodborne illnesses. Generic Escherichia coli (E. coli) is used as an…”
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Spatial Patterns of Escherichia coli Concentrations in Sediment before and after High‐Flow Events in a First‐Order Creek by Stocker, Matthew D., Penrose, Michael, Pachepsky, Yakov A.

“…Understanding spatial patterns of Escherichia coli in freshwater sediments is necessary to characterize sediments as microbial reservoirs and to evaluate the…”
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Using machine learning models to estimate Escherichia coli concentration in an irrigation pond from water quality and drone-based RGB imagery data by Hong, Seok Min, Morgan, Billie J., Stocker, Matthew D., Smith, Jaclyn E., Kim, Moon S., Cho, Kyung Hwa, Pachepsky, Yakov A.

“…•The demosaiced RGB imagery can improve the estimation of E. coli spatial patterns.•The quantile-based data splitting improved modeling of Imbalanced E. coli…”
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Intra‐daily variation of Escherichia coli concentrations in agricultural irrigation ponds by Stocker, Matthew D., Smith, Jaclyn E., Hill, Robert L., Pachepsky, Yakov A.

“…Microbial water quality is determined by comparing observed Escherichia coli concentrations with regulatory thresholds. Measured concentrations can be expected…”
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Persistent Patterns of E. coli Concentrations in Two Irrigation Ponds from 3 Years of Monitoring by Stocker, Matthew D., Pachepsky, Yakov A., Smith, Jaclyn, Morgan, Billie, Hill, Robert L., Kim, Moon S.

“…Small to medium irrigation ponds provide substantial quantities of water for irrigation in the Mid-Atlantic region of the U.S. The concentrations of the fecal…”
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Escherichia coli Export from Manured Fields Depends on the Time between the Start of Rainfall and Runoff Initiation by Stocker, Matthew D., Pachepsky, Yakov A., Hill, Robert L., Martinez, Gonzalo

“…After rainfall or irrigation begins, surface‐applied chemicals and manure‐borne microorganisms typically enter the soil with infiltration until the soil…”
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The Effect of Temperature Oscillations and Sediment Texture on Fecal Indicator Bacteria Survival in Sediments by Smith, Jaclyn E., Stocker, Matthew D., Hill, Robert L., Pachepsky, Yakov A.

“…Fecal indicator bacteria (FIB) inhabiting stream sediments have become a concern with regard to recreational and irrigation water quality. Sediments contain…”
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Irrigation waters and pipe-based biofilms as sources for antibiotic-resistant bacteria by Blaustein, Ryan A, Shelton, Daniel R, Van Kessel, Jo Ann S, Karns, Jeffrey S, Stocker, Matthew D, Pachepsky, Yakov A

“…The presence of antibiotic-resistant bacteria in environmental surface waters has gained recent attention. Wastewater and drinking water distribution systems…”
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Temporal Stability of Phytoplankton Functional Groups Within Two Agricultural Irrigation Ponds in Maryland, USA by Smith, Jaclyn E., Wolny, Jennifer L., Stocker, Matthew D., Hill, Robert L., Pachepsky, Yakov A.

“…Phytoplankton functional groups and their influence on water quality have been studied in various types of water bodies but have yet to be studied in…”
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Elucidating spatial patterns of E. coli in two irrigation ponds with empirical orthogonal functions by Stocker, Matthew D., Pachepsky, Yakov A., Hill, Robert L., Kim, Moon S.

“…•Microbial water quality substantially varied across the studied irrigation ponds.•Persistent spatial patterns of E. coli concentrations were identified as…”
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Persistence of Microcystin in Three Agricultural Ponds in Georgia, USA by Smith, Jaclyn E., Widmer, James A., Wolny, Jennifer L., Dunn, Laurel L., Stocker, Matthew D., Hill, Robert L., Pisani, Oliva, Coffin, Alisa W., Pachepsky, Yakov

“…Cyanobacteria and their toxins can have multiple effects on agricultural productivity and water bodies. Cyanotoxins can be transported to nearby crops and…”
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Depth‐Dependent Response of Fecal Indicator Bacteria in Sediments to Changes in Water Column Nutrient Levels by Smith, Jaclyn E., Kiefer, Lynda A., Stocker, Matthew D., Blaustein, Ryan A., Ingram, Shannon, Pachepsky, Yakov A.

“…Concentrations of Escherichia coli in bottom sediments can influence the assessment of microbial stream water quality. Runoff events bring nutrients to streams…”
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