planktothrix presentation29 07 3 [kompatibilitätsmodus] · 2015-09-16 · part 1 presentation 15...

www.bbe-moldaenke.de

3rd Webinar

Planktothrix

rubescens

bbe - the company for advanced algae and cyanobacteria measurement

www.bbe-moldaenke.de

Welcome

bbe Team

Detlev Lohse Frederike Lohse Sönke Kobarg

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Part 1 Presentation 15 minPart 2 Demonstration 3 minPart 3 Interview 10 min

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Webinar – Planktotrix rubescens

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MONITORING THE APPEARANCE OF THE CYANOBACTERIA

PLANKTOTHRIX RUBESCENS

Detlev Lohsefrom the bbe Moldaenke company, Germany

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North Rhine -Westphalia16,6 Mio. inhabitants (2013)

Water consumption 130 l/day

= 2,2 Mio. m 3/day total

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Sengbach dam 20 ha2,8 Mio. m 3

Maximum depth 36 m

The area of interest in 2013

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massive dam with waterworks Glüder

Extraction for drinking water processing

Planktothrix rubescens

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Planktothrix rubescens

Cyanotoxin

Reduce water qualityRaise health risksAdditional counteractionsRaise costsClose of extraction

The threat of the Planktothrix

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WHO Guidelines 1999

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Excitation of pigments withlight of different wavelengths

Determination of the red chlorophyll fluorescence

Accessory pigments

+ Chlorophyll a

Photosynthetic membrane

How it works: fluorometric measurement of algal and cyanobacterial microplankton

Light emisson

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What are the Algae classes?

Algae classes contain different accessory pigments

Chlorophyll a/b-Xanthophyll

Chlorophyll a/c-Phycobiliprotein

Phycobilisomes(Phycoerythrin)

Chlorophyll a/c-Xanthophyll

Phycobilisomes(Phycocyanin)

Chlorophyta CryptophytaRhodophyta

Heterokonto-phyta

HaptophytaDinophyta

CyanophytaGlaucophyta

Green MixedRedBrownBlueSpectralGroup

PeripheralAntenna

Division

…which affect the chlorophyll fluorescence emission in characteristic pattern

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Who is who in algae : norm spectra

… represent characteristic red fluorescence of algal cells on excitation with different wavelengths

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Addition of Plantothrix rubescens spectrum

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Structure of phycobilisomes

Phycocyanin

Phycoerythrin

Allophycocyanin

Chlorophyll

Thylakoid membrane

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• phycobilins close the „gap“ in the absorption spectra of chlorophyll and carotenoidsand act as antenna pigments • redish cyanobacteria contain phycoerythrin (Planktothrix rubescens)

Spectral features of the Planktothrix rubescens

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What can multispectral fluorometry accomplish ?

� Differentiation of algal classes in a complex mixtu re� Determination of cyanobacteria i.e. Planktothrix rubescens� Determination of chlorophyll content� Correction for fluorescent interfering substances� Field measurement

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Depth analysis: distribution of Planktothrix rubescens

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Gas vesicles• Protein cylinders• Hollow , gas filled• Water (cytoplama)

exclusion• Sensitive to outer

pressure• Sensitive to high

photosynthesisrate

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Scheme of main types of active movementsin cyanobacteria

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The point of extraction: compare the cell counts

and the OnlineAnalyser

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FluoroProbe profiles in a German river dam

E2 – E6 = raw water extraction points

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ConclusionFluorometric depth profiling and flow through oneline analysis are a sensitive and rapid tool for the detection of upcoming Plankthotrix

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Acknowledgement

Public Services SolingenAndreas Mokros, Waterworks Glüder