TMDL reevaluation: reconciling internal phosphorus load reductions in a eutrophic lake

Steinman, Alan D.; Ogdahl, Mary E.

doi:10.1080/10402381.2015.1014582

Cited by 24 publications

(7 citation statements)

References 34 publications

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“…The greater variability in water concentrations may reflect biogeochemical processing in the water column and pore water. TDP concentrations were typically 2- to 4-times higher in pore water relative to the water column, likely because of reducing conditions in the sediment as P is released with reduced Fe [37].…”

Section: Discussionmentioning

confidence: 99%

Sediment potentially controls in-lake phosphorus cycling and harmful cyanobacteria in shallow, eutrophic Utah Lake

et al. 2019

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Lakes worldwide are impacted by eutrophication and harmful algal or cyanobacteria blooms (HABs) due to excessive nutrients, including legacy P released from sediments in shallow lakes. Utah Lake (northern Utah, USA) is a shallow lake with urban development primarily on the east side of the watershed, providing an opportunity to evaluate HABs in relation to a gradient of legacy sediment P. In this study, we investigated sediment composition and P concentrations in sediment, pore water, and the water column in relation to blooms of harmful cyanobacteria species. Sediments on the east side of the lake had P concentrations up to 1710 mg/kg, corresponding to elevated P concentrations in pore water (up to 10.8 mg/L) and overlying water column (up to 1.7 mg/L). Sediment P concentrations were positively correlated with Fe 2 O 3 , CaO, and organic matter abundance, and inversely correlated with SiO 2 , demonstrating the importance of sediment composition for P sorption and mineral precipitation. Although the sediment contained <3% Fe 2 O 3 by weight, approximately half of the sediment P was associated with redox-sensitive Fe oxide/hydroxide minerals that could be released to the water column under reducing conditions. Cyanobacteria cell counts indicate that blooms of Aphanizomenon flos-aquae and Dolichospermum flosaquae species tend to occur on the east side of Utah Lake, corresponding to areas with elevated P concentrations in the sediment, pore water, and water column. Our findings suggest that shallow lake eutrophication may be a function of P in legacy sediments that contribute to observed HABs in specific locations of shallow lakes.

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Section: Discussionmentioning

confidence: 99%

Sediment potentially controls in-lake phosphorus cycling and harmful cyanobacteria in shallow, eutrophic Utah Lake

et al. 2019

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“…In the literature, however, there are data stating that P release occurs not only in anaerobic conditions, but also in oxygen presence (Andersen and Ring 1999). The explanation is that under oxygenated water column conditions, hypoxia often develops at the sediment-water interface or within the sediment below its surface (Steinman and Ogdahl 2015). These, usually, short-term changes of oxygen conditions are related to windless weather or high temperature, leading to periodic P release.…”

Section: Discussionmentioning

confidence: 99%

Internal Loading of Phosphorus from Bottom Sediments of Two Meso-eutrophic Lakes

et al. 2019

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The aim of the study was to determine the seasonal and spatial variability of phosphorus release from bottom sediments of two lakes in Poland (Wielkopolska Region): Lusowskie Lake and Prawe Lake. The comparison of results from these two lakes could have been reliably made, because they were characterized by a similar trophic state (meso-eutrophic), were located in the same climatic zone, and were examined at the same time but differed in terms of morphometry (area, depth, and shape) as well as land use of catchment area. These dimictic lakes were characterized by hypolimnetic oxygen deficits in summer. The internal loading of phosphorus was analysed on the basis of ex situ experiments with intact cores of bottom sediments sampled at two stations, situated in the profundal (the deepest place in the lake) and in the littoral (2.0 m depth). The results indicated that a higher phosphorus load was released from bottom sediments in the profundal zone than in the littoral zone of both lakes. Phosphorus release from the profundal zone was twofold higher in Prawe Lake than in Lusowskie Lake. It reached 2.6 mg P m −2 d −1 in spring and winter in the larger and deeper Lusowskie Lake, compared to 6.04 mg P m −2 d −1 in autumn in the smaller and shallower Prawe Lake. In the littoral zone, phosphorus release reached 1.67 mg P m −2 d −1 and 0.16 mg P m −2 d −1 in both lakes, respectively. Differences in phosphorus internal loading between the lakes were due to differences in the stability of thermal stratification, time of water mixing and oxygen concentration in the depth profile of the lake. Article Highlights • Seasonal and spatial changes of P internal loading from bottom sediments in meso-eutrophic lakes is presented • P release from the profundal zone was twofold higher in Prawe than in Lusowskie Lake. • Differences in P internal loading between the lakes were due to differences in the stability of thermal stratification, time of water mixing, and oxygen concentration

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“…Eutrophic Bear Lake (Michigan) is characterized by elevated TP concentrations (Steinman and Ogdahl 2015). There are several possibilities why internal P loading is not more problematic in Bear Lake like this current study; given that the sediments have relatively high TP concentrations.…”

Section: Discussionmentioning

confidence: 64%

Evaluation of Some Management Strategies in Eutrophic Mogan Lake, Turkey: Phosphorus Mobility in the Sediment-Water Interface

Topçu¹

2017

Appl. Ecol. Env. Res.

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Mogan Lake, a popular recreation area, is under the pressure of intense urban-industrial pollution, therefore some management strategies included occasional macrophyte harvesting, diverting running water into the lake to accelerate the improvement of its water, and dredging have been in progressing since 1995. This study was conducted on sediment and overlying water samples collected in April, July and October 2015 and January 2016 from Mogan Lake. The outstanding data for this study is presented as: i) detection of the sediment chemical composition and estimation of sediment phosphorus mobility, ii) comparison of the current status of the lake's eutrophication regarding phosphorus mobility with data from earlier studies regarding the common station. The research data has revealed i) sediment TP concentrations ranged from 620.00 µgP gDW -1 , to 1047.50 µgP gDW -1 while TN concentrations were between 3250.00 µg gDW -1 and 6325.00 µg gDW -1 . Sediment TOC concentrations ranged between 58850.00 µg gDW -1 and 79675.00 µg gDW -1 . Sediment iron content and loss on ignition values were determined as 1.608-3.415 mg gDW -1 and 9.05-20.94 %, respectively. The rank order of phosphorus fractions were evaluated as Ca≈P>Org≈P>CO 3 ≈P>Fe+Al≈P. ii) the phosphorus release values from the sediment (0.1754 -1.1249 mg P m -2 d -1 ) were higher than the earlier studies findings. Phosphorus release in the lake has increased over the past ten years but still remains at a generally low level together with some management activities in Mogan Lake, therefore, instead of the internal P source future research should focus on external sources. In shallow eutrophic systems such as Mogan Lake, sediments having phosphorus accumulation depends on deep interactions with principally antropogenic external sources. In conclusion the primary goal is to determine the adsorption capacity of the sediment in order to estimate the critical internal phosphorus load and the second goal should be to apply a sustainable monitoring program.

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TMDL reevaluation: reconciling internal phosphorus load reductions in a eutrophic lake

Cited by 24 publications

References 34 publications

Sediment potentially controls in-lake phosphorus cycling and harmful cyanobacteria in shallow, eutrophic Utah Lake

Sediment potentially controls in-lake phosphorus cycling and harmful cyanobacteria in shallow, eutrophic Utah Lake

Internal Loading of Phosphorus from Bottom Sediments of Two Meso-eutrophic Lakes

Evaluation of Some Management Strategies in Eutrophic Mogan Lake, Turkey: Phosphorus Mobility in the Sediment-Water Interface

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