Dr. Jochen Wollschläger

Institute for Chemistry and Biology of the Marine Environment  (» Postal address)

Dr. Jochen Wollschläger

<p style="text-align:justify"><span>My work focuses on the application of new and established bio-optical <em>in situ</em> instruments for the characterization of the inherent and apparent optical properties of the water. From these data, the relationship to the optically active substances (phytoplankton, CDOM, and non-algal particles) in the water are investigated to obtain ecologically relevant information (e.g. phytoplankton distribution) and develop new parameterizations of underwater light attenuation. A further focus are imaging approaches (e.g. FlowCam) to relate bio-optical information with particle characteristics and phytoplankton taxonomy.</span></p>

Curriculum vitae

Since 2022:     Senior Scientist at ICBM, University of Oldenburg in der working group
                         "Marine Sensor Systems"

2020-2022:     PostDoc at ICBM, University of Oldenburg in the project "Gute Küste Niedersachsen"

2016-2020:     PostDoc at ICBM, University of Oldenburg in the project "Coastal Ocean Darkening"

2014-2016:     PostDoc at Helmholtz-Zentrum Geesthacht (now Hereon) in the project "NEXOS"

2010-2013:     PhD-Student at Helmholtz-Zentrum Geesthacht (now Hereon)

2006-2010:     Scientist at the botanical Institute, Hamburg University

1999-2006:     Study of biology at Hamburg University

Publications

Zielinski, O., Pieck, D., Schulz, J., Thölen, C., Wollschläger, J., Albinus, M., Badewien, T.H., Braun, A., Engelen, B., Feenders, C., Fock, S., Lehners, C., Lõhmus, K., Lübben, A., Massmann, G., Meyerjürgens, J., Nicolai, H., Pollmann, T., Schwalfenberg, K., Stone, J., Waska, H., Winkler, H. (2022). The Spiekeroog Coastal Observatory: A Scientific Infrastructure at the Land-Sea Transition Zone (Southern North Sea). Front. Mar. Sci. 8. . http://doi.org/10.3389/fmars.2021.754905



Jemai, A., Wollschläger, J., Voß, D., Zielinski, O. (2021). Radiometry on Argo Floats: From the Multispectral State-of-the-Art on the Step to Hyperspectral Technology. Front. Mar. Sci. 8, 1–10. . http://doi.org/10.3389/fmars.2021.676537



Wollschläger, J., Neale, P.J., North, R.L., Striebel, M., Zielinski, O. (2021). Editorial: Climate Change and Light in Aquatic Ecosystems: Variability & Ecological Consequences. Front. Mar. Sci. 8, 506. . . http://doi.org/10.3389/fmars.2021.688712



Wollschläger, J., Tietjen, B., Voß, D., Zielinski, O. (2020). An Empirically Derived Trimodal Parameterization of Underwater Light in Complex Coastal Waters – A Case Study in the North Sea. Front. Mar. Sci. 7, 1–16. http://doi.org/10.3389/fmars.2020.00512



Wollschläger, J., Röttgers, R., Petersen, W., Zielinski, O. (2019). Stick or Dye: Evaluating a Solid Standard Calibration Approach for Point-Source Integrating Cavity Absorption Meters (PSICAM). Front. Mar. Sci. 5, 1–13. http://doi.org/10.3389/fmars.2018.00534



Wollschläger, J. & Möller, K. O.: Plankton needs and methods. In: Delory, E., & Pearlman, J. (Eds.). (2018). Challenges and Innovations in Ocean In Situ Sensors: Measuring Inner Ocean Processes and Health in the Digital Age. Elsevier. https://doi.org/10.1016/B978-0-12-809886-8.00003-X



Zielinski, O., Rüssmeier, N., Ferdinand, O., Miranda, M., Wollschläger, J. (2018). Assessing Fluorescent Organic Matter in Natural Waters: Towards In Situ Excitation–Emission Matrix Spectroscopy. Appl. Sci. 8, 2685. http://doi.org/10.3390/app8122685



Baschek, B., Schroeder, F., Brix, H., Riethmüller, R., Badewien, T. H., Breitbach, G., Brügge, B., Colijn, F., Doerffer, R., Eschenbach, C., Friedrich, J., Fischer, P., Garthe, S., Horstmann, J., Krasemann, H., Metfies, K., Merckelbach, L., Ohle, N., Petersen, W., Pröfrock, D., Röttgers, R., Schlüter, M., Schulz, J., Schulz-Stellenfleth, J., Stanev, E., Staneva, J., Winter, C., Wirtz, K., Wollschläger, J., Zielinski, O., and Ziemer, F. (2017): The Coastal Observing System for Northern and Arctic Seas (COSYNA), Ocean Sci., 13, 379-410. http://doi.org/10.5194/os-13-379-2017



Mascarenhas, V. J., Voß, D., Wollschläger, J., and Zielinski, O. (2017), Fjord light regime: Bio-optical variability, absorption budget, and hyperspectral light availability in Sognefjord and Trondheimsfjord, Norway, J. Geophys. Res. Oceans, 122, 3828–3847. http://doi.org/10.1002/2016JC012610



Metfies, K., Schroeder, F., Hessel, J., Wollschläger, J., Micheller, S., Wolf, C., Kilias, E., Sprong, P., Neuhaus, S., Frickenhaus, S., and Petersen, W. (2016): High-resolution monitoring of marine protists based on an observation strategy integrating automated on-board filtration and molecular analyses, Ocean Sci., 12, 1237-1247. http://doi.org/10.5194/os-12-1237-2016.



Wollschläger, J., Voß D., Zielinski O. and Petersen W. (2016): In Situ Observations of Biological and Environmental Parameters by Means of Optics—Development of Next-Generation Ocean Sensors With Special Focus on an Integrating Cavity Approach. IEEE Journal of Oceanic Engineering, vol. 41, no. 4, pp. 753-762. http://doi.org/10.1109/JOE.2016.2557466



Garaba, S.P., Voß, D., Wollschläger, J. and Zielinski, O. (2015): Modern approaches to shipborne ocean color remote sensing. Applied Optics 54 (12), 3602-3612. http://doi.org/10.1364/AO.54.003602



Wollschläger, J., Wiltshire, K. H., Petersen, W. and Metfies, K. (2015): Analysis of phytoplankton distribution and community structure in the German Bight with respect to the different size classes. Journal of Sea Research, 99, pp. 83-96. http://doi.org/10.1016/j.seares.2015.02.005



Wollschläger, J., Nicolaus, A., Wiltshire, K. H. and Metfies, K. (2014): Assessment of North Sea phytoplankton via molecular sensing: a method evaluation. Journal of Plankton Research 36(3): 695-708. http://doi.org/10.1093/plankt/fbu003



Wollschläger, J., Röttgers, R., Petersen, W. and Wiltshire, K. H. (2014): Performance of absorption coefficient measurements for the in situ determination of chlorophyll-a and total suspended matter. Journal of Experimental Marine Biology and Ecology 453(0): 138-147. http://doi.org/10.1016/j.jembe.2014.01.011



Wollschläger, J., Grunwald, M., Röttgers, R. and Petersen, W. (2013): Flow-through PSICAM: a new approach for determining water constituents absorption continuously. Ocean Dynamics 63(7): 761-775. http://doi.org/10.1007/s10236-013-0629-x

Research Cruises

Year

Ship

Cruise

Role

Area

2022

RV Meteor

M179/2

Scientist

Beagle Channel

2021

RV Meteor

M179/1

Chief Scientist

Atlantic

RV Heincke

HE583

Scientist

North Sea

RV Senckenberg

---

Chief Scientist

Wadden Sea

2020

RV Senckenberg

---

Chief Scientist

Wadden Sea

2019

RV Heincke

 

HE545

 

Scientist / Chief Scientist

North Sea

 

RV Heincke

HE527

Scientist

North Sea

2018

RV Heincke

HE516

Scientist

North Sea

RV Senckenberg

---

Chief Scientist

Wadden Sea

 

RV Heincke

 

HE503

 

Scientist / Chief Scientist

North Sea

2017

RV Heincke

HE491

Scientist

Norwegian Sea, Fjords

RV Heincke

HE488

Scientist

North Sea

2016

RV Elisabeth Mann Borgese

EMB131

Scientist

Baltic Sea

2015

RV Heincke

HE448

Scientist

Norwegian Sea, Fjords

RV Heincke

HE445

Scientist

North Sea

2014

RV Sonne

P4

Scientist

North Sea

2012

RV Heincke

HE365

PhD-Student

North Sea

2011

RV Heincke

HE359

PhD-Student

North Sea

RV Heincke

HE353

PhD-Student

North Sea

2010

RV Heincke

HE336

PhD-Student

North Sea

RV Heincke

HE331

PhD-Student

North Sea

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