Hypolimnetic withdrawal as a lake restoration technique: determination of feasibility and continued benefits

Nürnberg, Gertrud K.

doi:10.1007/s10750-019-04094-z

Cited by 22 publications

(21 citation statements)

References 32 publications

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“…As an alternative to physically deepening a lake by removing the nutrient-enriched sediment, in deep, stratifying lakes, hypolimnetic withdrawal can be viewed as a successful, relatively low-cost restoration technique (Nürnberg, 2007(Nürnberg, , 2019. During late summer or early autumn, when the highest nutrient concentrations in the hypolimnion occur, discharge of hypolimnion water through a pipe (e.g.…”

Section: Physical Methodsmentioning

confidence: 99%

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Mitigating eutrophication nuisance: in-lake measures are becoming inevitable in eutrophic waters in the Netherlands

Lürling

Mucci

2020

Hydrobiologia

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In the Netherlands, legacies and diffuse nutrient pollution continue to fuel recurrent cyanobacterial blooms in mostly shallow and relatively small surface waters. A survey in peer-reviewed literature and Dutch grey-literature was performed to gain insight into the physical-, chemical-and biological in-lake interventions used to bring these waters towards their desired state. A critical overview is presented on efficacy of different measures to counteract cyanobacterial blooms directly via targeting the cyanobacteria or indirectly via reduction of nutrient availability. Many actions have no or limited effects on minimising cyanobacterial blooms (air-bubble-or oil screens, surface mixers, low-energy ultrasound, effective microorganisms , fish introduction), while others are more effective, but may vary in longevity and costs (dams, excavation or dredging, hydrogen peroxide, phosphorus inactivation agents), meet legislation restrictions (copper-based algaecides, herbicides, dreissenids), or are not currently implemented (hypolimnetic withdrawal). The selection of promising interventions requires a proper diagnosis of each problem lake, based on water-and nutrient fluxes, the biology of the lake (plants, fish), the function of the lake and the characteristics of the method, such as efficacy, costs, safety and ease of implementation. In the Netherlands, ongoing diffuse loads and legacies necessitate repetitive in-lake interventions.

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Section: Physical Methodsmentioning

confidence: 99%

“…an Olszewski tube) on downstream water will remove those nutrients (P, NH 4 ) from the lake. Care has to be taken to prevent negative impacts on downstream water (Nürnberg, 2007(Nürnberg, , 2019. We are not aware of any hypolimnetic withdrawal case in the Netherlands.…”

Section: Physical Methodsmentioning

confidence: 99%

Mitigating eutrophication nuisance: in-lake measures are becoming inevitable in eutrophic waters in the Netherlands

Lürling

Mucci

2020

Hydrobiologia

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“…Water flow is usually driven by gravity so that the maintenance cost is very low, and the most cost-effective results can be obtained in late summer, when hypolimnetic nutrient concentrations are highest. The development of anoxic conditions and nutrient flux from the sediment may also be reduced by withdrawal earlier in the annual cycle, but then care should be taken not to affect water level or cause premature destratification during the productive season (Nürnberg, 2020). A comprehensive set of results (Nürnberg, 2007(Nürnberg, , 2020 shows that hypolimnetic withdrawal leads to a steady decrease in phosphorus and chlorophyll concentrations in the epilimnion, increases water transparency, and decreases phosphorus concentration as well as anoxia in the hypolimnion.…”

Section: Hypolimnetic Withdrawalmentioning

confidence: 99%

“…The development of anoxic conditions and nutrient flux from the sediment may also be reduced by withdrawal earlier in the annual cycle, but then care should be taken not to affect water level or cause premature destratification during the productive season (Nürnberg, 2020). A comprehensive set of results (Nürnberg, 2007(Nürnberg, , 2020 shows that hypolimnetic withdrawal leads to a steady decrease in phosphorus and chlorophyll concentrations in the epilimnion, increases water transparency, and decreases phosphorus concentration as well as anoxia in the hypolimnion. However, in spite of its simple and economic operation, hypolimnetic withdrawal has been rarely applied, likely due to the major drawback that the method in its traditional form only moves the nutrient problem downstream.…”

Section: Hypolimnetic Withdrawalmentioning

confidence: 99%

“…However, in spite of its simple and economic operation, hypolimnetic withdrawal has been rarely applied, likely due to the major drawback that the method in its traditional form only moves the nutrient problem downstream. Thus, nutrient removal may be needed before withdrawn water can be led elsewhere or returned back to the same lake (Nürnberg, 2020).…”

Section: Hypolimnetic Withdrawalmentioning

confidence: 99%

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Preface: Restoration of eutrophic lakes: current practices and future challenges

et al. 2020

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Sustainable lake restoration: From challenges to solutions

Tammeorg,

Chorus,

Spears

et al. 2023

WIREs Water

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Sustainable management of lakes requires us to overcome ecological, economic, and social challenges. These challenges can be addressed by focusing on achieving ecological improvement within a multifaceted, co‐beneficial context. In‐lake restoration measures may promote more rapid ecosystem responses than is feasible with catchment measures alone, even if multiple interventions are needed. In particular, we identify restoration methods that support the overarching societal target of a circular economy through the use of nutrients, sediments, or biomass that are removed from a lake, in agriculture, as food, or for biogas production. In this emerging field of sustainable restoration techniques, we show examples, discuss benefits and pitfalls, and flag areas for further research and development. Each lake should be assessed individually to ensure that restoration approaches will effectively address lake‐specific problems, do not harm the target lake or downstream ecosystems, are cost‐effective, promote delivery of valuable ecosystem services, minimize conflicts in public interests, and eliminate the necessity for repeated interventions. Achieving optimal, sustainable results from lake restoration relies on multidisciplinary research and close interactions between environmental, social, political, and economic sectors.This article is categorized under: Science of Water > Water Quality Water and Life > Stresses and Pressures on Ecosystems Water and Life > Conservation, Management, and Awareness

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Hypolimnetic withdrawal as a lake restoration technique: determination of feasibility and continued benefits

Cited by 22 publications

References 32 publications

Mitigating eutrophication nuisance: in-lake measures are becoming inevitable in eutrophic waters in the Netherlands

Mitigating eutrophication nuisance: in-lake measures are becoming inevitable in eutrophic waters in the Netherlands

Preface: Restoration of eutrophic lakes: current practices and future challenges

Sustainable lake restoration: From challenges to solutions

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