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Section EMI

Tel. +39 081 5833340 - +39 081 5833314
Fax: +39 081 7641355
Skype: mark_a_van_dijk

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Research interests

My research interests are the phytoplankton community composition and the species competition for resources under the natural dynamic environmental conditions. In this field I have mainly focused on the variability within the optical properties of the phytoplankton cells and their capacity for performing primary production. My experience involves using flow cytometry, spectrophotometry and fluorometry, and for a large extends involved trying to expand the use of these technologies beyond the routine applications. Flow cytometry can be used to monitor the dynamics in the abundance of taxonomic or functional groups within natural waters, but also for flow cytometric sorting of clusters for post-sort analyses of cluster specific properties of natural communities. One property that has my specific interest is the chlorophyll a specific absorption coefficient, the efficiency at which phytoplankton absorbs light per unit of chlorophyll. This parameter is a key factor in estimating phytoplankton primary production and biomass on a large scale through remote sensing and is one of the primary sources for uncertainties in these estimates, as it is highly variable between species and within species under different environmental abiotic conditions.  The project I am currently involved in revolves around implementing monitoring sites with automated systems using also flow cytometry for high temporal resolution data on dynamics in the phytoplankton community and monitoring of the occurrence of blooms. I am also involved in communication of research to increase public awareness on the need of a correct use of marine resources.

Journal Papers

G.M. Silsbe, K. Oxborough, D.J. Sugget, R.M. Forster, O. Komárek, E. Lawrenz, O. Prášil, R. Röttgers, M. Sicner, S.G.H. Simis, M.A. van Dijk, J.C. Kromkamp. (2015) Towards autonomous measurements of photosynthetic electron transport: An evaluation of active fluorescence-based measurements of photochemistry. Limnology and Oceanography Methods, vol 13(3), doi: 10.1002/lom3.10014

A.M. Verschoor, M.A. van Dijk, J. Huisman, E, van Donk. (2013) Elevated CO2 concentrations affect the elemental stoichiometry and species composition of an experimental phytoplankton community. Freshwater Biology, Volume 58(3), doi: 10.1111/j.13652427.2012.02833.x

Malkassian, D. Nerini, M.A. van Dijk, M. Thyssen, C Mante, G. Gregori. (2011) Functional analysis and classification of phytoplankton based on data from an automated flow cytometer data. Cytometry part A, 79(4), doi: 10.1002/cyto.a.21035.

M.A. van Dijk, G. Gregori, H.L. Hoogveld, M. Rijkeboer, M. Denis, A. Malkassian, H.J. Gons. (2010) Optimizing the setup of a flow cytometric cell sorter for efficient quantitative sorting of long filamentous cyanobacteria. Cytometry part A, 77(10), doi: 10.1002/cyto.a.20946.

Y. Zhang, E. Zhang, Y. Yin, M.A. van Dijk, L. Feng, Z. Shi, M. Liu, B Qin. (2010) Characteristics and sources of chromophoric dissolved organic matter in lakes of the Yungui Plateau, China, differing in trophic state and altitude. Limnology and Oceanography, vol. 55(6), doi: 10.4319/lo.2010.55.6.2645

Y. Zhang, M.A. van Dijk, M. Liu, G. Zhu, B. Qin. (2009) The contribution of phytoplankton degradation to chromophoric dissolved organic matter (CDOM) in eutrophic shallow lakes: Field and experimental evidence. Water Research, vol 43(18), doi:10.1016/j.watres.2009.07.024.

Y. Zhang, M. Liu, M.A. van Dijk, G. Zhu, Z. Gong, Y. Li, B. Qin. (2009) Measured and numerically partitioned phytoplankton spectral absorption coefficients in inland waters. Journal of Plankton Research, vol. 31(3), doi: 10.1093/plankt/fbn115

M. Stomp, M.A. van Dijk, H.M.J. van Overzee, M. Wortel, C. Sigon,M. Egas, H. Hoogveld, H.J.Gons, J. Huisman. (2008) The timescale of phenotypic plasticity and its impact on competition in fluctuating environments. The American Naturalist, vol. 172(5), doi: 10.1086/591680.

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