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Prof. Dr De Troch, Marleen
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Expertise
Prof. Dr. Marleen De Troch is a marine ecologist with a research interest in the role of invertebrates in marine food webs. Trophic interactions at the basis of marine food webs (mainly between bacteria, diatoms and copepods) are analysed by means of lab experiments and trophic biomarkers (stable isotopes, fatty acids). Special focus lies on fatty acid profiling but also transcriptomics are applied to understand the molecular aspects of the lipid metabolism under different stress conditions in a climate change context. The research is further extended to higher trophic levels in order to obtain an ecological basis of sustainable use of marine resources (aquaculture). The research is hypothesis driven and is conducted in coastal systems worldwide. Thesaurus terms: Biodiversity-ecosystem functioning; Fatty acids; Feeding experiments; Marine food web; Stable isotopes; Trophic markers Taxonomic term: Copepoda [WoRMS]

Institute	Top \| Institute \| Publications
Universiteit Gent; Faculteit Wetenschappen; Vakgroep Biologie; Onderzoeksgroep Mariene Biologie (MARBIOL), more Function: Associate Professor Direct contact at institute: Tel.: +32-(0)9-264 85 20 Fax: +32 (0)9-264 85 98 E-mail:

Publications (22)	Top \| Institute \| Publications
A1 Publications (12) [show]
Vigliano Relva, J.; Van Colen, C.; Barhdadi, W.; Daly, A.J.; De Troch, M. (2024). Temperature increase alters relative fatty acid composition and has negative effects on reproductive output of the benthic copepod Tachidius discipes (copepoda: Harpacticoida). Mar. Biol. (Berl.) 171(1): 22. https://dx.doi.org/10.1007/s00227-023-04343-9, more Tahon, G.; Lebbe, L.; De Troch, M.; Sabbe, K.; Willems, A. (2020). Leeuwenhoekiella aestuarii sp. nov., isolated from salt-water sediment and first insights in the genomes of Leeuwenhoekiella species. Int. J. Syst. Evol. Microbiol. 70(3): 1706-1719. https://dx.doi.org/10.1099/ijsem.0.003959, more Mensens, C.; De Laender, F.; Janssen, C.; Rivera, F.C.; Sabbe, K.; De Troch, M. (2018). Selective and context-dependent effects of chemical stress across trophic levels at the basis of marine food webs. Ecol. Appl. 28(5): 1342-1353. https://dx.doi.org/10.1002/eap.1737, more Mensens, C.; De Laender, F.; Janssen, C.R.; Sabbe, K.; De Troch, M. (2017). Different response-effect trait relationships underlie contrasting responses to two chemical stressors. J. Ecol. 105(6): 1598-1609. https://dx.doi.org/10.1111/1365-2745.12777, more Taheri, M.; Giunio, M.; De Troch, M.; Vincx, M.; Vanaverbeke, J. (2017). Effect of short-term hypoxia on the feeding activity of abundant nematode genera from an intertidal mudflat. Nematology (Leiden) 19(1): 1-13. https://dx.doi.org/10.1163/15685411-00003028, more Werbrouck, E.; Van Gansbeke, D.; Vanreusel, A.; Mensens, C.; De Troch, M. (2016). Temperature-induced changes in fatty acid dynamics of the intertidal grazer Platychelipus littoralis (Crustacea, Copepoda, Harpacticoida): insights from a short-term feeding experiment. J. Therm. Biol. 57: 44-53. http://dx.doi.org/10.1016/j.jtherbio.2016.02.002, more Cnudde, C.; Moens, T.; Werbrouck, E.; Lepoint, G.; Van Gansbeke, D.; De Troch, M. (2015). Trophodynamics of estuarine intertidal harpacticoid copepods based on stable isotope composition and fatty acid profiles. Mar. Ecol. Prog. Ser. 524: 225-239. http://dx.doi.org/10.3354/meps11161, more Vansteenbrugge, L.; Ampe, B.; De Troch, M.; Vincx, M.; Hostens, K. (2015). On the distribution and population dynamics of the ctenophore Mnemiopsis leidyi in the Belgian part of the North Sea and Westerschelde estuary. Mar. Environ. Res. 110: 33-44. http://dx.doi.org/10.1016/j.marenvres.2015.07.011, more Vansteenbrugge, L.; Van Regenmortel, T.; De Troch, M.; Vincx, M.; Hostens, K. (2015). Gelatinous zooplankton in the Belgian part of the North Sea and the adjacent Schelde estuary: spatio-temporal distribution patterns and population dynamics. J. Sea Res. 97: 28-39. http://dx.doi.org/10.1016/j.seares.2014.12.008, more Moens, T.; Vafeiadou, A.-M.; De Geyter, E.; Vanormelingen, P.; Sabbe, K.; De Troch, M. (2014). Diatom feeding across trophic guilds in tidal flat nematodes, and the importance of diatom cell size. J. Sea Res. 92: 125-133. http://dx.doi.org/10.1016/j.seares.2013.08.007, more De Troch, M.; Houthoofd, L.; Chepurnov, V.; Vanreusel, A. (2006). Does sediment grain size affect diatom grazing by harpacticoid copepods? Mar. Environ. Res. 61(3): 265-277. dx.doi.org/10.1016/j.marenvres.2005.10.004, more Kotwicki, L.; De Troch, M.; Urban-Malinga, B.; Gheskiere, T.; Wesawski, J.M. (2005). Horizontal and vertical distribution of meiofauna on sandy beaches of the North Sea (The Netherlands, Belgium, France). Helgol. Mar. Res. 59(4): 255-264. dx.doi.org/10.1007/s10152-005-0001-8, more
Book chapter [show]
Cnudde, C.; Stock, W.; Willems, A.; Rigaux, A.; De Troch, M.; Moens, T. (2013). Spatio-temporal variation in harpacticoid copepod assemblages and of their food sources in an estuarine intertidal zone, in: Cnudde, C. Trophic ecology of intertidal harpacticoid copepods, with emphasis on their interactions with bacteria = Trofische ecologie van intertidale harpacticoide copepoden, met de nadruk op hun interacties met bacteriën. pp. 25-50, more
Abstracts (4) [show]
Sahota, R.; Boyen, J.; Semmouri, I.; Bodé, S.; De Troch, M. (2022). An inter-order comparison of copepod fatty acid composition and biosynthesis in response to a long-chain PUFA-deficient diet along a temperature gradient, in: Mees, J. et al. Book of abstracts – VLIZ Marine Science Day, Online event 2 March 2022. VLIZ Special Publication, 88: pp. 80-81, more Boyen, J.; Fink, P.; Mensens, C.; Wellens, S.; De Troch, M. (2019). Unraveling fatty acid bioconversion in harpacticoid copepods facing a changing environment, in: Mees, J. et al. (Ed.) Book of abstracts – VLIZ Marine Science Day. Bredene, Belgium, 13 March 2019. VLIZ Special Publication, 83: pp. 12, more Wellens, S.; Mensens, C.; Boyen, J.; Guifarro, Z.; Vlaeminck, B; Domínguez, L.; De Troch, M. (2019). Fatty acid profiling of copepods to meet SDG 2, 13 and 14: comparing temperature responses in a tropical and temperate estuary, in: Mees, J. et al. (Ed.) Book of abstracts – VLIZ Marine Science Day. Bredene, Belgium, 13 March 2019. VLIZ Special Publication, 83: pp. 32, more Vansteenbrugge, L.; Hostens, K.; De Troch, M.; Vincx, M. (2013). Current distribution and population dynamics of Mnemiopsis leidyi populations in the Belgian part of the North Sea and the Westerschelde estuary, in: Robbens, J. et al. (Ed.) Non-indigenous species in the North-East Atlantic. Ostend, 20-22 November 2013: Book of abstracts. VLIZ Special Publication, 66: pp. 15, more
Report [show]
Vansteenbrugge, L.; Van Regenmortel, T.; De Troch, M.; Vincx, M.; Hostens, K. (2014). Gelatinous zooplankton in the Belgian part of the North Sea and the adjacent Schelde estuary: a real problem? CM Documents - ICES, CM 2014(A:12). ICES: Copenhagen. 2 pp., more
Thesis (co-)promotor (3) [show]
Cnudde, C. (2013). Trophic ecology of intertidal harpacticoid copepods, with emphasis on their interactions with bacteria = Trofische ecologie van intertidale harpacticoide copepoden, met de nadruk op hun interacties met bacteriën. PhD Thesis. Ghent University (UGent): Gent. ISBN 9789090278285. 209 pp., more Stock, W. (2013). Effects of copepods, diatoms and their interactions on denitrification in marine sediments: an experimental approach. MSc Thesis. Universiteit Gent, Faculteit Wetenschappen: Gent. 36 pp., more Vanhove, B. (2013). Trophic position of the invasive ctenophore Mnemiopsis leidyi: an experimental approach. MSc Thesis. Oceans & Lakes, Interuniversity Master in Marine and Lacustrine Science and Management: Brussel. 33 + annexes pp., more
Thesis supervisor [show]
Stock, W. (2013). Effects of copepods, diatoms and their interactions on denitrification in marine sediments: an experimental approach. MSc Thesis. Universiteit Gent, Faculteit Wetenschappen: Gent. 36 pp., more

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