Zone of Influence for Soluble Reactive Phosphorus in an Effluent Dominated River

Zone of Influence for Soluble Reactive Phosphorus in an Effluent Dominated River

Bibliographic Details
Main Author: Miller, Joseph G., III
Language:English
Published: University of Cincinnati / OhioLINK 2004
Subjects:
Environmental Sciences
Little Miami River
soluble reactive phosphorus
sediment sorption
zone of influence
nutrients
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=ucin1078713833
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spelling ndltd-OhioLink-oai-etd.ohiolink.edu-ucin10787138332021-08-03T06:09:31Z Zone of Influence for Soluble Reactive Phosphorus in an Effluent Dominated River Miller, Joseph G., III Environmental Sciences Little Miami River soluble reactive phosphorus sediment sorption zone of influence nutrients Benthic sediment and pore water from the Little Miami River (LMR) near Spring Valley, Ohio was sampled before and after three storm events to determine the zone of influence for soluble reactive phosphorus (SRP). The zone of influence is the area in a vertical cross section through the streambed where the pore water SRP concentration changes during the passage of a runoff event. Benthic sediment samples (d < 0.85 mm sieved coarse sand and finer) from three depths (z=0, 15, 30 cm) and five in-stream locations at a single transect were analyzed for their ability to adsorb and desorb SRP. The LMR stream bottom was surveyed during each sampling event to detect changes in the cross-sectional shape of the river. Laboratory analysis of benthic sediment and pore water showed a significant decrease (α =5%) in benthic SRP concentrations with the passage of storm events at all sample points except the 15 and 30 cm near-bank samples. The zone of influence for the SRP concentration was found to extend throughout the benthic zone examined except in areas that are "protected" by a layer of depositional silts near the edge of the LMR. The river cross-section profiles taken during sampling events showed a scouring and re-shaping of the river bottom. Following the storm event, water column SRP concentrations increase from upstream sources and subsequently benthic sediment SRP increases in the zone of influence. The benthic sediments may confound future improvements from TMDL controls and watershed improvements with regards to nutrient removal. While fine benthic material serves as a sink during periods of high SRP in the water column, it may also serve as a source of SRP as the river column phosphorus concentrations decline. 2004-07-01 English text University of Cincinnati / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=ucin1078713833 http://rave.ohiolink.edu/etdc/view?acc_num=ucin1078713833 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection NDLTD
language English
sources NDLTD
topic Environmental Sciences
Little Miami River
soluble reactive phosphorus
sediment sorption
zone of influence
nutrients
spellingShingle Environmental Sciences
Little Miami River
soluble reactive phosphorus
sediment sorption
zone of influence
nutrients
Miller, Joseph G., III
Zone of Influence for Soluble Reactive Phosphorus in an Effluent Dominated River
author Miller, Joseph G., III
author_facet Miller, Joseph G., III
author_sort Miller, Joseph G., III
title Zone of Influence for Soluble Reactive Phosphorus in an Effluent Dominated River
title_short Zone of Influence for Soluble Reactive Phosphorus in an Effluent Dominated River
title_full Zone of Influence for Soluble Reactive Phosphorus in an Effluent Dominated River
title_fullStr Zone of Influence for Soluble Reactive Phosphorus in an Effluent Dominated River
title_full_unstemmed Zone of Influence for Soluble Reactive Phosphorus in an Effluent Dominated River
title_sort zone of influence for soluble reactive phosphorus in an effluent dominated river
publisher University of Cincinnati / OhioLINK
publishDate 2004
url http://rave.ohiolink.edu/etdc/view?acc_num=ucin1078713833
work_keys_str_mv AT millerjosephgiii zoneofinfluenceforsolublereactivephosphorusinaneffluentdominatedriver
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