Industrial Swine and Poultry Production Causes Chronic Nutrient and Fecal Microbial Stream Pollution
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Concentrated animal feeding operations (CAFOs) are the principal means of livestock production in the USA and Europe, and these industrial-scale facilities have a high potential to pollute nearby waterways. Chemical and biological stream water quality of a swine and poultry CAFO-rich watershed was investigated on 10 dates during 2013. Geometric mean fecal coliform counts were in the thousands at five of seven sites, especially in locations near swine waste sprayfields. Nitrate concentrations were very high and widespread throughout the watershed, with some individual samples yielding >10 mg-N/L. Ammonium concentrations were likewise high, but greatest near swine waste sprayfields, ranging up to 38 mg-N/L. Five-day biochemical oxygen demand (BOD5) concentrations exceeded 10 mg/L in 11 of 70 stream samples, reaching as high as 88 mg/L. BOD5 concentrations were significantly correlated with components of animal waste including total organic carbon, ammonium, and phosphorus, as well as the nutrient response variable chlorophyll a. The degree of nutrient and fecal contamination did not significantly differ between rainy and dry periods, indicating that surface and groundwater pollution occurs independently of stormwater runoff. This research shows that industrial-scale swine and poultry production leads to chronic pollution that is both a human health and ecosystem hazard. There are approximately 450,000 CAFOs currently operating in the USA, with the majority located in watersheds feeding major riverine and estuarine systems with known water quality problems. Current US waste management protocols for this widespread system of livestock production fail to protect freshwater and estuarine ecosystems along the US Mid-Atlantic, Southeast and Gulf coasts, and expansion into industrializing nations will likely bring severe pollution with it.
KeywordsCAFO Nutrients Fecal bacteria BOD Algal blooms
For funding, we thank the Waterkeeper Alliance. We thank Mary Grace Lemon and Rena Turner for the laboratory help. For project facilitation, we thank Kelly Hunter Foster and Larry Baldwin of Waterkeeper and Kemp Burdette, Cape Fear Riverkeeper. For review comments, we thank Drs. JoAnn Burkholder and Lawrence B. Cahoon.
- American Public Health Association (1995). Standard methods for the examination of water and wastewater, 19th edition. 1015 Fifteenth St. NW, Washington, DC 20005.Google Scholar
- Arfken, A.M., Mallin, M.A., Cahoon, L.B., Song, B. (2013). Monitoring swine fecal contamination in the Cape Fear River Watershed based on the detection and quantification of hog-specific Bacteroides-Prevotella 16S rRNA genes. Report No. 436. Water Resources Research Institute of the University of North Carolina.Google Scholar
- Bricker, S.B., Clement, C.G., Pirhalla, D.E., Orlando, S.P. & Farrow, D.R.G. (1999). National estuarine eutrophication assessment: effects of nutrient enrichment in the nation’s estuaries. NOAA, National Ocean Service, Special Projects Office and the National Centers for Coastal Ocean ScienceGoogle Scholar
- Burkholder, J. M., Mallin, M. A., Glasgow, H. B., Jr., Larsen, L. M., McIver, M. R., Shank, G. C., Deamer-Melia, N., Briley, D. S., Springer, J., Touchette, B. W., & Hannon, E. K. (1997). Impacts to a coastal river and estuary from rupture of a swine waste holding lagoon. Journal of Environmental Quality, 26, 1451–1466.CrossRefGoogle Scholar
- Burkholder, J.M., Dickey, D.A., Kinder, C., Reed, R.E., Mallin, M.A., Melia, G., McIver, M.R., Cahoon, L.B., Brownie, C., Deamer, N., Springer, J., Glasgow, H.B., Toms, D. & Smith, J. (2006). Comprehensive trend analysis of nutrients and related variables in a large eutrophic estuary: a decadal study of anthropogenic and climatic influences. Limnology and Oceanography 51(1, part 2), 463–487.Google Scholar
- Campagnolo, E. R., Johnson, K. R., Karpati, A., Rubin, C. S., Kolpin, D. W., Meyer, M. T., Esteban, J. E., Currier, R. W., Smith, K., Thu, K., & McGeehin, M. (2002). Antimicrobial residues in animal waste and water resources proximal to large-scale swine and poultry feeding operation. Science of the Total Environment, 299(1–3), 89–95.CrossRefGoogle Scholar
- Clark, J. W., Viessman, W., Jr., & Hammer, M. J. (1977). Water supply and pollution control (3rd ed.). New York: IEP-A Dun-Donnelley Publishers.Google Scholar
- Glibert, P.M., Wilkerson, F.P., Dugdale, R.C., Parker, A.E., Alexander, J., Blaser, S., Murasko, S. 2014. Microbial communities from San Francisco Bay Delta respond differently to oxidized and reduced nitrogen substrates—even under conditions that would otherwise suggest nutrient sufficiency. Frontiers in Marine Science 1, Article 17, doi: 10.3389/fmars.2014.00017.
- Glibert, P.M., Wilkerson, F.P., Dugdale, R.C., Raven, J.A., Dupont, C.L., Leavitt, P.R., Parker, A.E., Burkholder, J.M., Kana, T.M. 2015. Pluses and minuses of ammonium and nitrate uptake and assimilation by phytoplankton and implications for productivity and community composition, with emphasis on nitrogen-enriched conditions. Limnology and Oceanography (2015).Google Scholar
- Harden, S.L. (2015). Surface-water quality in agricultural watersheds of the North Carolina Coastal Plain associated with concentrated animal feeding operations. U.S. Geological Survey, Scientific Investigations Report 2015–5080. Doi: 10.3133/sir20155080.
- Howarth, R., Swaney, D., Billen, G., Garnier, J., Hong, B., Humborg, C., Johnes, P., Mörth, C. M., & Marino, R. (2012). Nitrogen fluxes from the landscape are controlled by net anthropogenic nitrogen inputs and by climate. Frontiers in Ecology and the Environment, 10(1), 37–43.CrossRefGoogle Scholar
- Mallin, M.A., Johnson, V.L., Ensign, S.H. & MacPherson, T.A. (2006). Factors contributing to hypoxia in rivers, lakes and streams. Limnology & Oceanography 51(1, part 2), 690–701.Google Scholar
- NC DENR (1999) Administrative Code Section: 15A NCAC 2B .0200 Classifications and water quality standards applicable to surface waters and wetlands of North Carolina. State of North Carolina Department of Environment and Natural Resources, Division of Water Quality, Raleigh, N.C.Google Scholar
- NRCS (2014a) Web soil Survey, National Resources Conservation Service, U.S. Department of Agriculture. On-line tool. http://websoilsurvey.nrcs.usda.gov/app/
- NRCS (2014b) Appendix II, Manure characteristics. National Resources Conservation Service, U.S. Department of Agriculture. (information downloaded April 2014). http://www.nrcs.usda.gov/wps/portal/nrcs/detailfull/national/technical/nra/rca/?cid=nrcs143_014154.
- Sanderson Farms (2007) Sanderson Farms, Inc., Contract Producer Meetings, Company Overview and Financial Summary, 2007.Google Scholar
- Schlotzhauer, S.D. & Littell, R.C. (1987). SAS system for elementary statistical analysis. SAS Institute, Inc., SAS Campus Dr., Cary, N.C.Google Scholar
- Smock, L. A., & Gilinsky, E. (1992). Coastal plain blackwater streams. In C. T. Hackney, S. M. Adams, & W. H. Martin (Eds.), Biodiversity of the Southeastern United States. New York: Wiley.Google Scholar
- Stone, K. C., Hunt, P. G., Coffey, S. W., & Matheny, T. A. (1995). Water quality status of a USDA water quality demonstration project in the eastern coastal plain. Journal of Soil and Water Conservation, 50(5), 567–571.Google Scholar
- Thu, K. M., & Durrenberger, E. P. (1998). Pigs, profits, and rural communities. Albany: State University of New York Press.Google Scholar
- United Egg Producers (2010). United Egg Producers Animal Husbandry Guidelines for U.S. Egg Laying Flocks. Animal Husbandry Guidelines, 2010 Edition.Google Scholar
- USDA (2014a) 2012 Census of Agriculture, United States Department of Agriculture, Natural Resources Conservation Service. http://www.agcensus.usda.gov.
- USDA (2014b) Official Soils Descriptions, United States Department of Agriculture, Natural Resources Conservation Service, Soil Survey Division. http//soilseries.sc.egov.usda.gov/osdname.asp.Google Scholar
- USEPA (1983). Methods for chemical analysis of water and wastes. Environmental Monitoring and Support Laboratory, U.S. Environmental Protection Agency, EPA-600/4-79-020.Google Scholar
- USEPA (1997). Methods for the determination of chemical substances in marine and estuarine environmental matrices, 2nd Ed. National Exposure Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, Ohio, EPA/600/R-97/072.Google Scholar
- USEPA (2014) United States Environmental Protection Agency, National Pollutant Discharge Elimination system (NPDES). On-line. http://cfpub1.epa.gov/npdes/search.cfm.
- Wetzel, R. G. (2001). Limnology: lake and river ecosystems (3rd ed.). San Diego: Academic.Google Scholar