Spatial and temporal characterization of escherichia coli, suspended particulate matter and land use practice relationships in a mixed-land use contemporary watershed

被引:0
|
作者
Petersen F. [1 ]
Hubbart J.A. [1 ,2 ]
机构
[1] Division of Plant and Soil Sciences, Davis College of Agriculture, Natural Resources and Design, West Virginia University, Agricultural Sciences Building, Morgantown, 26506, WV
[2] Institute ofWater Security and Science, Schools of Agriculture and Food, and Natural Resources, Davis College of Agriculture, Natural Resources and Design, West Virginia University, 3109 Agricultural Sciences Building, Morgantown, 26506, WV
来源
Petersen, Fritz (fp0008@mix.wvu.edu) | 1600年 / MDPI AG卷 / 12期
基金
美国国家科学基金会; 美国食品与农业研究所;
关键词
Escherichia coli; Experimental watershed; Land use practices; Suspended particulatematter; Water quality;
D O I
10.3390/W12051228
中图分类号
学科分类号
摘要
Understanding land use practice induced increases in Escherichia (E.) coli and suspended particulate matter (SPM) concentrations is necessary to improve water quality. Weekly stream water samples were collected from 22 stream gauging sites with varying land use practices in a representative contemporary mixed-land use watershed of the eastern USA. Over the period of one annual year, Escherichia (E.) coli colony forming units (CFU per 100 mL) were compared to suspended particulate matter (SPM) concentrations (mg/L) and land use practices. Agricultural land use sub-catchments comprised elevated E. coli concentrations (avg. 560 CFU per 100 mL) compared to proximate mixed development (avg. 330 CFU per 100 mL) and forested (avg. 206 CFU per 100 mL) sub-catchments. Additionally, agricultural land use showed statistically significant relationships (p < 0.01) between annual E. coli and SPM concentration data. Quarterly PCA biplots displayed temporal variability in land use impacts on E. coli and SPM concentrations, with agricultural land use being closely correlated with both pollutants during Quarters 2 and 3 but not Quarters 1 and 4. The data collected during this investigation advance the understanding of land use impacts on fecal contamination in receiving waters, thereby informing land use managers on the best management practices to reduce exposure risks. © 2020 by the authors.
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