Lake responses to long-term hypolimnetic withdrawal treatments

Nürnberg, Gertrud K.

doi:10.1080/07438140709354026

Cited by 54 publications

(42 citation statements)

References 36 publications

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“…Second, selective withdrawal is advisable for improving reservoir water quality, although most reservoirs in China adopt singular fixed withdrawal. Hypolimnetic withdrawal has been shown to be an effective way to remove nutrients and electrochemically reduced substances in many stratified lakes, but the timing of withdrawal operation is critical, with late summer and autumn considered the preferred times (Nürnberg, 2007). However, the downstream effects of selective withdrawal should be considered before it is enacted.…”

Section: Summary and Management Recommendationsmentioning

confidence: 99%

Physical limnology of a typical subtropical reservoir in south China

Wang¹,

Qian²,

Han³

et al. 2011

Lake and Reservoir Management

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Section: Summary and Management Recommendationsmentioning

confidence: 99%

Physical limnology of a typical subtropical reservoir in south China

Wang¹,

Qian²,

Han³

et al. 2011

Lake and Reservoir Management

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“…Hypolimnion water pollutes the watercourse into which it is discharged, and it induces periodic changes in hydrochemical and biological conditions (Elloumi et al, 2008). Some previous studied showed that without careful management, hypolimnetic releases can degrade water quality in the receivers such as rivers with small flows (Marshall et al, 2006;Nürnberg, 2007). An additional side effect that is often disregarded by lake restoration studies is the characteristic and unpleasant odour of hydrogen sulphide in the surrounding air.…”

Section: Introductionmentioning

confidence: 99%

“…It is one of the most visible examples of biosphere's alteration due to human activities affecting aquatic ecosystems (Zamparas and Zacharias, 2014). One of the lake restoration method is a hypolimnetic withdrawal that has gained popularity over the years and is presently used to restore optimal water conditions in around 40 European lakes and 8 North American lakes (Nürnberg, 2007;Lehman et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…A recognized disadvantage of this restoration technique is its impact on downstream waters, including eutrophication, oxygen depletion and odour development (Nürnberg, 2007). This method involves the removal of oxygen-deficient water from the lake's hypolimnion layer, which is characterized by significant fertility and the presence of methane, hydrogen sulphide and decomposable organic matter, to the receiving body, usually a river (Cooke et al, 1982;Klapper, 1991;Nürnberg, 2007;Górniak et al, 2014;Zamparas and Zacharias, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Growing pollution levels in water bodies, in particular lakes require urgent measures to inhibit and reverse those processes, including as part of restoration programs (Cooke et al, 1982;Klapper, 1991). The researchers are focused on the positive effects of the hypolimnetic withdrawal but only for the recultivated reservoirs (Marshall et al, 2006;Nürnberg, 2007;Lehman et al, 2009;Dunalska et al, 2012Dunalska et al, , 2013. We think that our studies are unique worldwide because we did not found any papers, which were interesting in the effect of this method on the surrounding environment, e.g.…”

Section: Introductionmentioning

confidence: 99%

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The effect of lake restoration by the hypolimnetic withdrawal method on the intensity of ambient odour

et al. 2016

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The objective of this study was to evaluate the effect of lake restoration by the hypolimnetic withdrawal method on the intensity of ambient odour in the vicinity of the pipeline outlet. The study was carried out in [2012][2013] -N), total nitrogen (TN), dissolved nitrogen (DN), total particulate nitrogen (T-PN), total organic carbon (TOC), dissolved organic carbon (DOC) and total particulate organic carbon (T-POC). Water samples were also analysed to determine total bacterial abundance (TBA) and the counts of bacterial rods, cocci and spiral-shaped bacteria, and sulphate-reducing bacteria (SRB). Significant variations in odour intensity

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Key differences between lakes and reservoirs modify climate signals: A case for a new conceptual model

Hayes

Deemer

Corman

et al. 2017

Limnol Oceanogr Letters

144

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Lakes and reservoirs are recognized as important sentinels of climate change, integrating catchment and atmospheric climate change drivers. Climate change conceptual models generally consider lakes and reservoirs together despite the possibility that these systems respond differently to climate-related drivers. Here, we synthesize differences between lake and reservoir characteristics that are likely important for predicting waterbody response to climate change. To better articulate these differences, we revised the energy mass flux framework, a conceptual model for the effects of climate change on lentic ecosystems, to explicitly consider the differential responses of lake versus reservoir ecosystems. The model predicts that catchment and management characteristics will be more important mediators of climate effects in reservoirs than in natural lakes. Given the increased reliance on reservoirs globally, we highlight current gaps in our understanding of these systems and suggest research directions to further characterize regional and continental differences among lakes and reservoirs. Author Contribution Statement: NMH and BRD co-led the manuscript effort and contributed equally. JRC and BRD conducted the statistical analyses. KES and JRC designed the lake pairing analysis. NMH, NRR, and KES developed the climate change conceptual model. This paper was a highly collaborative effort and all authors contributed equally to the development of the research question and study design as well as the writing of the paper. This is an open access article under the terms of the Creative Commons Attribution NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. Scientific Significance StatementClimate change poses a significant threat to freshwater ecosystems, though the exact nature of these threats can vary by waterbody type. An existing conceptual model describes how altered fluxes of mass and energy will affect standing waterbodies, but it does not differentiate reservoirs from lakes. Here, we synthesize evidence suggesting that lakes and reservoirs differ in fundamental ways that are likely to influence their response to climate change. We then present a revised conceptual model that contrasts climate change effects on reservoirs versus lakes. 47Limnology and Oceanography Letters 2, 2017, 47-62

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Lake responses to long-term hypolimnetic withdrawal treatments

Cited by 54 publications

References 36 publications

Physical limnology of a typical subtropical reservoir in south China

Physical limnology of a typical subtropical reservoir in south China

The effect of lake restoration by the hypolimnetic withdrawal method on the intensity of ambient odour

Key differences between lakes and reservoirs modify climate signals: A case for a new conceptual model

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