Water quality in the Albemarle-Pamlico drainage basin, North Carolina and Virginia, 1992-95

Spruill, Timothy B.; Harned, Douglas A.; Ruhl, Peter M.; Eimers, Jo Leslie; McMahon, Gerard; Smith, K.E.; Galeone, David R.; Woodside, Michael D.

doi:10.3133/cir1157

Cited by 39 publications

(46 citation statements)

References 6 publications

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“…Point source discharges efficiently transfer phosphorus inputs to streams and P discharges can be greater than 25% of P inputs to streams in urbanized areas (McMahon and Woodside 1997). In the AlbemarlePamlico drainage basin, North Carolina and Virginia, it was estimated that even though permitted P point source inputs from waste water treatment plants and industry accounted for 16% of the P source inputs to the watershed, they accounted for greater than 40% of the stream loads (Spruill et al 1998).…”

Section: Trade Of Feed and Foodmentioning

confidence: 99%

Net anthropogenic phosphorus inputs: spatial and temporal variability in the Chesapeake Bay region

et al. 2008

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We estimated net anthropogenic phosphorus inputs (NAPI) in the Chesapeake Bay region. NAPI is an index of phosphorus pollution potential. NAPI was estimated by quantifying all phosphorus inputs and outputs for each county. Inputs include fertilizer applications and non-food phosphorus uses, while trade of food and feed can be an input or an output. The average of 1987The average of , 1992The average of , 1997The average of , and 2002 NAPI for individual counties ranged from 0.02 to 78.46 kg P ha -1 year -1 . The overall area-weighted average NAPI for 266 counties in the region was 4.52 kg P ha -1 year -1 , indicating a positive net phosphorus input that can accumulate in the landscape or can pollute the water. Large positive NAPI values were associated with agricultural and developed land cover. County area-weighted NAPI increased from 4.43 to 4.94 kg P ha -1 year -1 between 1987 and 1997 but decreased slightly to 4.86 kg P ha -1 year -1 by 2002. Human population density, livestock unit density, and percent row crop land combined to explain 83% of the variability in NAPI among counties. Around 10% of total NAPI entering the Chesapeake Bay watershed is discharged into Chesapeake Bay. The developed land component of NAPI had a strong direct correlation with measured phosphorus discharges from major rivers draining to the Bay (R 2 = 0.81), however, the correlation with the simple percentage of developed land was equally strong. Our results help identify the sources of P in the landscape and evaluate the utility of NAPI as a predictor of water quality.

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Section: Trade Of Feed and Foodmentioning

confidence: 99%

Net anthropogenic phosphorus inputs: spatial and temporal variability in the Chesapeake Bay region

et al. 2008

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“…The bacteria responsible for their decomposition use up and hence deplete the dissolved oxygen concentration in the water bodies to such levels that can result in fish kills. Additionally excessive algae on the water surface can accumulate into a scum which can result in clogged pipelines, restricted recreation and foul odours, when they eventually decay (Spraill et al, 1998;Murphy, 2005;Mueller et al, 1995;Nolan et al, 2000;Banu et al, 2008). Also algal blooms have been linked to health problems such as skin irritation and death (of both human and animals) depending on the type and duration of exposure (Oram, 2005).…”

Section: Introductionmentioning

confidence: 99%

“…The most thermodynamically stable form of phosphate is orthophosphate which is commonly identified in laboratory analysis and also used by plants. Polyphosphates in water are unstable and eventually convert to orthophosphate (Chapman, 1992;Spraill et al, 1998;Murphy, 2005;John De Zuane, 1990;Mueller et al, 1995;Nolan et al, 2000). Phosphates are moderately soluble in water and are not very mobile in soils.…”

Section: Introductionmentioning

confidence: 99%

“…Natural sources of phosphorus in both surface and ground water include atmospheric deposition, natural decomposition of rocks and minerals, weathering of soluble inorganic materials, decaying biomass, runoff, and sedimentation. Anthropogenic sources include fertilizers, waste water and septic system effluent, animal wastes, detergents, industrial discharge, phosphate mining, drinking water treatment, forest fires, synthetic material development surface (Spraill et al, 1998;Murphy, 2005;Mueller et al, 1995;Nolan et al, 2000;Manahan, 1993). Extremely high levels of phosphates can cause digestive problems in human (Murphy, 2005).…”

Section: Introductionmentioning

confidence: 99%

“…DNA, RNA, ATP etc. Like nitrogen, it is a limiting nutrient for algal growth, because it occurs in the least amount relative to the needs of plants (Chapman, 1992;Spraill et al, 1998;Murphy, 2005). Phosphorus occurs almost solely as dissolved phosphate in natural and waste water.…”

Section: Introductionmentioning

confidence: 99%

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Phosphate Level in Some Selected Surface and Ground Water Bodies of Rajshahi City Corporation

Habib

Hoque

Islam

et al. 2015

J. Environ. Sci. & Natural Resources

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Optimum PO 4 -P level in surface and ground water is essential for maintaining good health and environment. In this study, the PO 4 -P level was measured for 148 different water samples collected from ponds, supply tape and tube-well of 8 different areas of Rajshahi City Corporation. All the sites of surface water bodies crossed the United States Environmental Protection Agency (USEPA) criterion of 0.01-0.03 mg L -1 PO 4 -P to be free from eutrophication. Among the samples, 4.2% were within the range (0.025-0.1 mg L -1 ) of onset of eutrophication while 95.8% crossed the hyper-eutrophication level (> 0.10 mg L -1 ). However, most of the ground (83.1%) and tap (92.7%) water were excellent in quality for drinking with respect to PO 4 -P level (<1 mg L -1 ). Only 15.3% of ground water and 7.3% of tap water were good quality and a negligible amount (1.6%) of ground water was fair quality.

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Toxic Chemicals: Can What We Don't Know Harm Us?

deFur

Foersom

2000

Environmental Research

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Water quality in the Albemarle-Pamlico drainage basin, North Carolina and Virginia, 1992-95

Cited by 39 publications

References 6 publications

Net anthropogenic phosphorus inputs: spatial and temporal variability in the Chesapeake Bay region

Net anthropogenic phosphorus inputs: spatial and temporal variability in the Chesapeake Bay region

Phosphate Level in Some Selected Surface and Ground Water Bodies of Rajshahi City Corporation

Toxic Chemicals: Can What We Don't Know Harm Us?

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