Modeling the role of wind and warming on Microcystis aeruginosa blooms in shallow lakes with different trophic status

Blottière, Lydie; Rossi, Maurice; Madricardo, Fantina; Hulot, Florence D.

doi:10.1007/s12080-013-0196-2

Cited by 25 publications

(12 citation statements)

References 51 publications

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“…In non-stratifying, mixed systems, the added advantage of being buoyant is limited to non-existent. In these shallow systems, mixing can be even counterproductive, by disrupting the sediment surface and enhancing phosphorus release (Blottiere et al 2014). Indeed, Barbiero et al showed that artificial mixing in a small, shallow impoundment close to New York (USA) not only did not result in the desired reduction in cyanobacterial dominance, but also led to an increased flux of phosphorus from the sediment, potentially even fueling more biomass buildup (Barbiero et al 1996a, b).…”

Section: The Use Of Artificial Mixing Devices In Nonstratifying Watersmentioning

confidence: 99%

Evaluation of several end-of-pipe measures proposed to control cyanobacteria

2015

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While reduction in nutrient loading is a prerequisite for mitigation of harmful cyanobacterial blooms in nutrient-enriched waters, in certain surface waters eutrophication control is not always feasible due to practical and economic constraints or might be effective only in the long run. Yet, the urgent need to control cyanobacteria in water for drinking, irrigation, aquaculture, industry and recreation has spurred the development of a plethora of alternative methods that claim to be fast acting. Here, we provide a critical overview of several of these end-of-pipe measures: effective microorganisms (EM Ò ), golden algae (Ochromonas), plant/tree extracts, ultrasound and artificial mixing of non-stratifying waters. Most of the end-of the pipe measures claim to provide sustainable control of harmful cyanobacterial blooms, while at best only targeting symptom relief rather than eutrophication relief. Support for ''effective'' microorganisms, golden algae, plant extracts, ultrasound and artificial mixing of non-stratifying waters to diminish eutrophication problems such that the resulting water quality meets societal and legislation demands is limited, and several proposed underlying mechanisms are doubtful. None of these curative measures seem the desired wide applicable solution to cyanobacterial nuisance; they should not be considered Columbus's egg. A critical evaluation of end-of pipe measures is crucial for water authorities in their choice for mitigating measures.

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Section: The Use Of Artificial Mixing Devices In Nonstratifying Watersmentioning

confidence: 99%

Evaluation of several end-of-pipe measures proposed to control cyanobacteria

2015

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“…Fourth, the use of an artificial beach, with different lengths and inclinations, could, for instance, reproduce in a controlled environment beach or bank erosion by waves (Lorang and Stanford 1993;Liedermann et al 2014). Fifth, studies on buoyant and sinking phytoplankton could continue with a focus on the intensity of water mixing in interaction with its timing and duration (Huisman et al 2002;Huisman et al 2004;Blottière et al 2014;Zhou et al 2015). Sixth, gas dynamics in the water column and gas exchanges at the air-water interface are of major importance to understand freshwater community dynamics (see for instance Verspagen et al 2014;Hanson et al 2015;Zhao et al 2015).…”

Section: Discussionmentioning

confidence: 99%

“…The effects of wind on the mixing intensity affect organisms and their interactions differently. For instance, Microcystis aeruginosa , a cyanobacteria that forms dense blooms in freshwater is a well‐studied organism (Visser et al ; Huisman et al ; Blottière et al ). Thanks to gas vesicles that increase cell buoyancy, this cyanobacteria flows up to the surface where it may outcompete other photosynthetic organisms by notably changing the light climate in the water column.…”

Section: Effects Of the Mixing On Abiotic And Biotic Compartments In mentioning

confidence: 99%

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Mesocosms with wavemakers: A new device to study the effects of water mixing on lake ecology

Hulot

Rossi

Verdier

et al. 2016

Limnology & Ocean Methods

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To better understand the interaction between wind waves and the biological properties of freshwater ecosystems, it is highly desirable to reproduce coherent water motions generated by wind. This paper presents new 15 m3 mesocosms with wavemakers, also known as wave flumes, which are designed to emulate the effects of surface waves on the biological processes in shallow lakes. First, we succinctly review existing approaches to modify mixing of the water column in ecological studies: most mixing devices that have been used to date generate turbulence, but do not create the coherent water motions generated by surface waves. This justifies the development of mesocosms that seek to reproduce these coherent water motions. Tanks with wave generators are common devices in fluid mechanics, and we adapted them for aquatic ecology. Second, we describe the effects of waves on the water column, provide some theoretical background on wavemakers, and detail the choices adopted for the design of our device. Our system is able to generate waves with a wavelength of 0.1–5 m and amplitude of 1–5 cm in a 10 m long tank with a 1 m water column, which allows to choose mixing intensity from superficial to complete mixing of the water column. Experimental results show effects of mixing regime on water chemistry and plankton abundance. We finally discuss challenging research questions on the ecological role of surface waves in shallow lakes that can be addressed with mesocosms with wavemakers.

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“…The platform also includes 12 nonstandard mesocosms, making it possible to manipulate the water physical structure as well as temperature (Fig. 6a, Blottière et al 2014). All these mesocosms can be customized with model sediments, planktonic species, macrophytes, and fish species for the purpose of specific ecological studies.…”

Section: Seminatural Experimental Platforms Dedicated To Aquatic Ecolmentioning

confidence: 99%

A coordinated set of ecosystem research platforms open to international research in ecotoxicology, AnaEE-France

Mougin

Azam

Caquet

et al. 2015

Environ Sci Pollut Res

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The infrastructure for Analysis and Experimentation on Ecosystems (AnaEE-France) is an integrated network of the major French experimental, analytical, and modeling platforms dedicated to the biological study of continental ecosystems (aquatic and terrestrial). This infrastructure aims at understanding and predicting ecosystem dynamics under global change. AnaEE-France comprises complementary nodes offering access to the best experimental facilities and associated biological resources and data: Ecotrons, seminatural experimental platforms to manipulate terrestrial and aquatic ecosystems, in natura sites equipped for large-scale and long-term experiments. AnaEE-France also provides shared instruments and analytical platforms dedicated to environmental (micro) biology. Finally, AnaEE-France provides users with data bases and modeling tools designed to represent ecosystem dynamics and to go further in coupling ecological, agronomical, and evolutionary approaches. In particular, AnaEE-France offers adequate services to tackle the new challenges of research in ecotoxicology, positioning its various types of platforms in an ecologically advanced ecotoxicology approach. AnaEE-France is a leading international infrastructure, and it is pioneering the construction of AnaEE (Europe) infrastructure in the field of ecosystem research. AnaEE-France infrastructure is already open to the international community of scientists in the field of continental ecotoxicology.

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Modeling the role of wind and warming on Microcystis aeruginosa blooms in shallow lakes with different trophic status

Cited by 25 publications

References 51 publications

Evaluation of several end-of-pipe measures proposed to control cyanobacteria

Evaluation of several end-of-pipe measures proposed to control cyanobacteria

Mesocosms with wavemakers: A new device to study the effects of water mixing on lake ecology

A coordinated set of ecosystem research platforms open to international research in ecotoxicology, AnaEE-France

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