Royal Netherlands Institute for Sea Research
Phone number
+31 (0)113 57 7464
Location
Yerseke
Function
Head of Scientific Department
Expertise
  • Physiology and ecology of seaweeds
  • Experimental marine biology

ORCID number: 0000-0002-3214-4354

Seaweed on a plate made of... seaweed

Prof. Dr. Klaas Timmermans

Head of Scientific Department

‘Seaweed on a plate of … seaweed’

Experimental marine biologist professor Klaas Timmermans cannot predict exactly when it will happen, but he is convinced that it will happen one day. Sooner or later, seaweed will also be on the menu in the Netherlands. And perhaps you will eat that seaweed from a bowl that has been produced from seaweed too!

Ferns in the sea

‘Together with my colleagues, I study the biology of seaweed. For example, we are investigating how sexual reproduction takes place in seaweed. Seaweed is a plant, but it does not reproduce like most plants on land with flowers and pollen. Instead, seaweed is more akin to ferns that reproduce through spores. We are investigating in detail under which light and temperature conditions brown seaweeds reproduce best. Thanks to that knowledge, seaweed farms will soon be able to obtain new plants for their production throughout the entire year.’

Sustainable protein

‘Whereas we provide the fundamental knowledge about the growth and reproduction of seaweed, others – for example, seaweed farmers – will need to put this to practical use. If we want to continue sustainably feeding the growing number of people on earth in the future, then we will really need to search for alternative protein sources. Once the valuable proteins have been extracted from seaweed, a fraction remains that can be used to produce “low-grade” biogas, for example. Finally, the fibres from seaweed can, in theory, be used in a 3D printer to produce a wide range of high-value products, such as bowls for the seaweed salad.’

Read more +

Current positions

•    Senior scientist ecophysiology of seaweeds, head of Department Estuarine and Delta Systems (EDS) at NIOZ(-Yerseke)
•    Honorary Professor University Groningen

Specialization

Understanding the role of seaweeds in the marine environment, including the possibilities for seaweed biomass as source for sustainable food and energy for the future.

Research interests

The overarching goal in my research is to arrive at insight in the effects of the biotic and abiotic environment, including changes therein (e.g. global warming, ocean acidification, sea level rise), on physiology, ecology and diversity of marine photo-autotrophes, particularly seaweeds. In recent years, I studied for example nutrient uptake in native North Sea seaweeds and their effects on growth, the possibilities to use seaweeds as producers of high value products (pigments, proteins, polysaccharides), the effects of hydrodynamics on morphology and cellular composition and the optimalisation of biofilters using seaweeds. 

Personal motivation

Water and particularly salt water have always fascinated me. Having the opportunity to work in the marine environment is like a dream come true. Early in my career as biologist, I came to the conclusion that experimental work is the way forward in (marine) physiology. The organisms with which I work cannot talk. By subjecting them to varying experimental conditions they “tell” me what their condition is, they indicated whether they are functioning optimally or not. Experiments are the constant factor in my work.  I started with experimental work with chironomid (midge) larvae in the freshwater (PhD at U. Amsterdam), studying the effects of cadmium, lead, zinc and copper on their physiology and ecology. At NIOZ (post-doc and later as scientist), I investigated the effects of ultra-low iron concentrations on Southern Ocean phytoplankton.  During this time, I have spent more than 1 year at sea, from the North Sea via the Atlantic Ocean to Southern Ocean, and I have been to 4 times to Antarctica.  Currently my research focus has shifted to seaweeds. I initiated the establishment of the NIOZ Seaweed centre an ideal environment for experimental work on seaweeds. Experiments are ranging from nutrient uptake, to CO2 manipulation to experiments in which seaweeds are subjected to different hydrodynamic conditions. In combination with observations (and experiments!) in the field, the information collected gives me insight in the role of biotic and abiotic conditions on the organisms I study.

Currently I am also motivated to teach the younger generations of scientists: from lectures to internships, conveying my enthusiasm and dedication for marine biology and ecophysiology. Teaching that only with proper fundamental knowledge we can start to think about applications. With all current attention and interest for seaweeds, for example on their role in a marine biobased economy, the need for basic fundamental research is obvious. Only with that knowledge we can start to think about their applications, for example in using seaweed biomass as resource for sustainable food and energy for the future.

Education

Klaas R. Timmermans received his Masters degree in Biology (cum laude) at the University of Amsterdam in 1986. From 1986–1991, he did his PhD on the effects of trace metals on Chironomid larvae (University of Amsterdam). In 1991 he defended his PhD-thesis entitled “Trace metal ecotoxicokinetics of chironomids” As of 1991, Klaas Timmermans works as a (senior) scientist at the Royal Netherlands Institute for Sea Research (NIOZ), first within the Department of Marine Chemistry & Geology, from 2008- 2016 in the Department of Biological Oceanography (head of department 2011-2016), and from 2016 onwards in the Department Estuarine and Delta Systems, (head of department), NIOZ-Yerseke.
As of 1 September 2014 Klaas Timmermans is appointed as honorary professor Marine Plant Biomass in the Department of Ocean Ecosystems, with in ESRIG, Energy and Sustainability Research Institute Groningen at Groningen University (Faculty Science and Engineering). 

Linked news

Thursday 02 November 2023
Delta Climate Center in Vlissingen is taking shape
More than 500 million people worldwide live in deltas like Zeeland. The livability of these delta areas is under pressure, partly due to climate change, rising sea levels and loss of biodiversity. The question of how we can make deltas safe and…
Wednesday 15 February 2023
Green light for Delta Climate Center in Vlissingen
NIOZ joins unique collaboration in Zeeland delta. Worldwide, over 500 million people live in deltas. The liveability of these delta is under pressure because of rising sea levels and deterioration of ecosystems. How do we create sustainable,…
Tuesday 26 April 2022
Seaweed cultivation requires knowledge of reproduction
Seaweed has been grown, eaten and processed in many parts of the world for centuries. “Scaling up this seaweed cultivation much further is a good idea, in the light of various environmental and climate problems”, says PhD student Alexander Ebbing,…
Friday 25 March 2022
NIOZ viert 10 jarig bestaan in Zeeland
Vandaag, 25 maart, is het gebouw van het Koninklijk Nederlands Instituut voor Onderzoek der Zee (NIOZ) in Yerseke feestelijk heropend na een flinke verbouwing. Ook vieren we het 10-jarig bestaan van NIOZ in Zeeland. Tijdens de opening spraken oa.…
Thursday 24 March 2022
Marine algae as a basis of fish bouillon
Due to its strong umami taste, a marine alga might once become a vegan substitute of ingredients in human food such as fish broth. Marine biologist Christos Latsos, who studied the effect of several growth parameters on the productivity, quality and…
Monday 28 February 2022
IPPC report on climate adaptation
Today the IPCC published their newest report on climate change and climate adaptation. It analyses the impacts of the climate crisis and how humanity can adapt, in addition to slashing emissions. The good news is that a liveable future remains within…
Thursday 13 January 2022
'From Sea to Society' project awarded
Within the KIC call ‘Aquatic food production’, two research projects have been awarded funding. Consortia of researchers, companies and public organisations will carry out research into the production of biomass and protein-rich food in the sea. NIOZ…
Wednesday 08 January 2020
Zeewier duurzaam alternatief voor soja of vismeel als visvoeding
Onlangs werd het vierjarige ZEEVIVO (Zeewier in Visvoer) project succesvol afgerond. Hogeschool Van Hall Larenstein, NIOZ, Wageningen University & Research, Danvos en Hortimare onderzochten gezamenlijk of zeewier een geschikt en duurzaam ingrediënt…
Thursday 26 September 2019
NIOZ nieuws | Uniek onderwaterlaboratorium in Zeeland feestelijk geopend
Welk dijkontwerp is het beste voor waterveiligheid én natuur? Omdat de zeespiegel stijgt, worden veel dijken aangepast. Hoe ontwerp je die dijken zo, dat je waterveiligheid combineert met een rijkdom aan onderwaternatuur, biodiversiteit en een hoge…
Wednesday 11 September 2019
Opening wereldwijd uniek onderwaterlaboratorium in Yerseke
In het getijdengebied van de Oosterschelde is een wereldwijd uniek onderwaterlaboratorium aangelegd dankzij een nauwe samenwerking tussen Rijkswaterstaat (RWS), de HZ University of Applied Sciences (HZ) en het Koninklijk Nederlands Instituut voor…

Linked blogs

Friday 09 October 2020
NIOZ Podcast Van Delta tot Diepzee aflevering 4 Zeewier als antwoord van de zee op de problemen op het land
Wat kan in tijden van problemen met stikstof en veestapel, zorg om de visstand en een almaar groeiende wereldbevolking van mensen die gewoon lekker willen eten iedere dag; wat kan kortom in deze tijden de zee voor ons betekenen? De geruchten gaan dat…

NIOZ publications

  • 2023
    Derksen, G.C.H.; Blommaert, L.; Bastiaens, L.; Hasserbetçi, C.; Fremouw, R.; van Groenigen, J.; Twijnstra, R.H.; Timmermans, K.R. (2023). ATR-FTIR spectroscopy combined with multivariate analysis as a rapid tool to infer the biochemical composition of Ulva laetevirens (Chlorophyta). Front. Mar. Sci. 10: 1154461. https://dx.doi.org/10.3389/fmars.2023.1154461
    Jansen, H.M.; van der Burg, S.W.K.; van Duren, L.A.; Kamermans, P.; Poelman, M.; Steins, N.A.; Timmermans, K.R. (2023). Food for thought: A realistic perspective on the potential for offshore aquaculture in the Dutch North Sea. J. Sea Res. 191: 102323. https://dx.doi.org/10.1016/j.seares.2022.102323
    Vissers, C.; Lindell, S.R.; Nuzhdin, S.V.; Almada, A.A.; Timmermans, K. (2024). Using sporeless sporophytes as a next step towards upscaling offshore kelp cultivation. J. Appl. Phycol. 36: 313-320. https://dx.doi.org/10.1007/s10811-023-03123-8
  • 2022
    Biggs, T.E.G.; Rozema, P.D.; Evans, C.; Timmermans, K.R.; Meredith, M.P.; Pond, D.W.; Brussaard, C.P.D. (2022). Control of Antarctic phytoplankton community composition and standing stock by light availability. Polar Biol. 45(11): 1635-1653. https://dx.doi.org/10.1007/s00300-022-03094-5
    Coleman, B.; Van Poucke, C.; De Witte, B.; Ruttens, A.; Moerdijk-Poortvliet, T.C.W.; Latsos, C.; De Reu, K.; Blommaert, L.; Duquenne, B.; Timmermans, K.; van Houcke, J.; Muylaert, K.; Robbens, J. (2022). Potential of microalgae as flavoring agents for plant-based seafood alternatives. Future Foods 5: 100139. https://dx.doi.org/10.1016/j.fufo.2022.100139
    Jiang, L,; Blommaert, L.; Jansen, H.M.; Broch, O.J.; Timmermans, K.R.; Soetaert, K. (2022). Carrying capacity of Saccharina latissima cultivation in a Dutch coastal bay: a modelling assessment. ICES J. Mar. Sci./J. Cons. int. Explor. Mer 79(3): 709-721. https://dx.doi.org/10.1093/icesjms/fsac023
    Jiang, L.; Jansen, H.M.; Broch, O.J.; Timmermans, K.R.; Soetaert, K. (2022). Modelling spatial variability of cultivated Saccharina latissima in a Dutch coastal bay shows benefits of co-cultivation with shellfish. ICES J. Mar. Sci./J. Cons. int. Explor. Mer 79(8): 2324-2335. https://dx.doi.org/10.1093/icesjms/fsac176
    Latsos, C.; Wassenaar, E.; Moerdijk, T.; Coleman, B.; Robbens, J.; van Roy, S.; Bastiaens, L.; van Houcke, J.; Timmermans, K.R. (2022). Effect of pH on Rhodomonas salina growth, biochemical composition, and taste, produced in semi-large scale under sunlight conditions. J. Appl. Phycol. 34(3): 1215-1226. https://dx.doi.org/10.1007/s10811-022-02730-1
    Moerdijk-Poortvliet, T.C.W.; de Jong, D.L.C.; Fremouw, R.; de Reu, S.; de Winter, J.M.; Timmermans, K.; Mol, G.; Reuter, N.; Derksen, G.C.H. (2022). Extraction and analysis of free amino acids and 5′-nucleotides, the key contributors to the umami taste of seaweed. Food Chemistry 370: 131352. https://dx.doi.org/10.1016/j.foodchem.2021.131352
    van Groenigen, J.; Derksen, G.C.H.; Timmermans, K. (2022). Review of presence, induction and isolation of major cellular constituents from Porphyra Sensu Lato (Rhodophyceae), including Mycosporine-Like Amino Acids (MAA's). AAPS Journal 4(1). https://dx.doi.org/10.36959/917/491
    Ye, Naihao; Han, Wentao; Toseland, Andrew; Wang, Yitao; Fan, Xiao; Xu, Dong; van Oosterhout, Cock; Aslam, Shazia N.; Barry, Kerrie; Beszteri, Bank; Brussaard, Corina; Clum, Alicia; Copeland, Alex; Daum, Chris; Duncan, Anthony; Eloe-Fadrosh, Emiley; Fong, Allison; Foster, Brian; Foster, Bryce; Ginzburg, Michael; Huntemann, Marcel; Ivanova, Natalia N.; Kyrpides, Nikos C.; Martin, Kara; Moulton, Vincent; Mukherjee, Supratim; Palaniappan, Krishnaveni; Reddy, T. B. K.; Roux, Simon; Schmidt, Katrin; Strauss, Jan; Timmermans, Klaas; Tringe, Susannah G.; Underwood, Graham J. C.; Valentin, Klaus U.; van de Poll, Willem H.; Varghese, Neha; Grigoriev, Igor V.; Tagliabue, Alessandro; Zhang, Jian; Zhang, Yan; Ma, Jian; Qiu, Huan; Li, Youxun; Zhang, Xiaowen; Mock, Thomas; Sea of Change Consortium (2022). The role of zinc in the adaptive evolution of polar phytoplankton. Nature Ecology & Evolution 6(7): 965-978. https://dx.doi.org/10.1038/s41559-022-01750-x
  • 2021
    de Jong, D.L.C.; Timmermans, K.R.; de Winter, J.M.; Derksen, G.C.H. (2021). Effects of nutrient availability and light intensity on the sterol content of Saccharina latissima (Laminariales, Phaeophyceae). J. Appl. Phycol. 33: 1101-1113. https://doi.org/10.1007/s10811-020-02359-y
    Ebbing, A.P.J.; Fivash, G.S.; Bellido Martin, N.; Pierik, R.; Bouma, T.J.; Kromkamp, J.C.; Timmermans, K.R. (2021). In-culture selection and the potential effects of changing sex ratios on the reproductive success of multiannual delayed gametophytes of Saccharina latissima and Alaria esculenta. J. Mar. Sci. Eng. 9(11): 1250. https://dx.doi.org/10.3390/jmse9111250
    Ebbing, A.P.J.; Fivash, G.S.; Pierik, R.; Bouma, T.J.; Kromkamp, J.; Timmermans, K. (2022). The SeaCoRe system for large scale kelp aquaculture: a plug-and-play, compatible, open-source system for the propagation and transport of clonal gametophyte cultures. J. Appl. Phycol. 34: 517-527. https://dx.doi.org/10.1007/s10811-021-02638-2
    Ebbing, A.P.J.; Pierik, R.; Fivash, G.S.; van de Loosdrecht, N.C.J.; Bouma, T.J.; Kromkamp, J.C.; Timmermans, K. (2021). The role of seasonality in reproduction of multiannual delayed gametophytes of Saccharina latissima. J. Phycol. 57(5): 1580-1589. https://dx.doi.org/10.1111/jpy.13191
    Latsos, C.; Bakratsas, G.; Moerdijk, T.; van Houcke, J.; Timmermans, K.R. (2021). Effect of salinity and pH on growth, phycoerythrin, and non-volatile umami taste active compound concentration of Rhodomonas salina using a D-optimal design approach. J. Appl. Phycol. 33: 3591-3602. https://doi.org/10.1007/s10811-021-02547-4
    Latsos, C.; van Houcke, J.; Blommaert, L.; Verbeeke, G.P.; Kromkamp, J.; Timmermans, K.R. (2021). Effect of light quality and quantity on productivity and phycoerythrin concentration in the cryptophyte Rhodomonas sp. J. Appl. Phycol. 33(2): 729-741. https://doi.org/10.1007/s10811-020-02338-3
    Martin, K.; Schmidt, K.; Toseland, A.; Boulton, C.A.; Barry, K.; Beszteri, B.; Brussaard, C.P.D.; Clum, A.; Daum, C.G.; Eloe-Fadrosh, E.; Fong, A.; Foster, B.; Foster, B.; Ginzburg, M.; Huntemann, M.; Ivanova, N.N.; Kyrpides, N.C.; Lindquist, E.; Mukherjee, S.; Palaniappan, K.; Reddy, T.B.K.; Rizkallah, M.R.; Roux, S.; Timmermans, K.; Tringe, S.G.; van de Poll, W.H.; Varghese, N.; Valentin, K.U.; Lenton, T.M.; Grigoriev, I.V.; Leggett, R.M.; Moulton, V.; Mock, T. (2021). The biogeographic differentiation of algal microbiomes in the upper ocean from pole to pole. Nature Comm. 12(1). https://dx.doi.org/10.1038/s41467-021-25646-9
    Zhu, G.; Ebbing, A.; Bouma, T.J.; Timmermans, K.R. (2021). Morphological and physiological plasticity of Saccharina latissima (Phaeophyceae) in response to different hydrodynamic conditions and nutrient availability. J. Appl. Phycol. 33(4): 2471-2483. https://doi.org/10.1007/s10811-021-02428-w
    Zhu, Q.; Zhu, Z.; Nauta, R.; Timmermans, K.R.; Jiang, L.; Cai, Y.; Yang, Z.; Gerkema, T. (2021). Impact of off-bottom seaweed cultivation on turbulent variation in the hydrodynamic environment: A flume experiment study with mimic and natural Saccharina latissima thalli. Sci. Total Environ. 797: 149048. https://dx.doi.org/10.1016/j.scitotenv.2021.149048
  • 2020
    de Smit, J.; Kleinhans, M.G.; Gerkema, T.; Timmermans, K.R.; Bouma, T.J. (2020). Introducing the TiDyWAVE field flume: A method to quantify natural ecosystem resilience against future storm waves. Limnol. Oceanogr., Methods 18(10): 585-598. https://dx.doi.org/10.1002/lom3.10386
    Ebbing, A.; Pierik, R.; Bouma, T.J.; Kromkamp, J.C.; Timmermans, K. (2020). How light and biomass density influence the reproduction of delayed Saccharina latissima gametophytes (Phaeophyceae). J. Phycol. 56(3): 709-718. https://dx.doi.org/10.1111/jpy.12976
    Latsos, C.; van Houcke, J.; Timmermans, K.R. (2020). The Effect of Nitrogen Starvation on Biomass Yield and Biochemical Constituents of Rhodomonas sp. Front. Mar. Sci. 7: 900. https://doi.org/10.3389/fmars.2020.563333
    Lubsch, A.; Timmermans, K.R. (2020). Phosphate and nitrate uptake dynamics in Palmaria palmata (Rhodophyceae): Ecological and physiological aspects of nutrient availability. J. Phycol. 56(5): 1184-1195. https://dx.doi.org/10.1111/jpy.13018
    Patyshakuliyeva, A.; Falkoski, D.; Wiebenga, A.; Timmermans, K.; de Vries, R.P. (2020). Macroalgae derived fungi have high abilities to degrade algal polymers. Microorganisms 8(1): 52. https://dx.doi.org/10.3390/microorganisms8010052
    Wijers, T.; Hylkema, A.; Visser, T.; Timmermans, K. (2020). Effects of preservation on protein extraction in four seaweed species. J. Appl. Phycol. 32: 3401-3409. https://dx.doi.org/10.1007/s10811-020-02197-y
  • 2019
    Bertolini, C.; Capelle, J.; Timmermans, K.; Bouma, T.J.; van de Koppel, J. (2019). Timing it right: Non-consumptive effects on prey recruitment magnify overtime. J. Exp. Mar. Biol. Ecol. 513: 47-54. https://doi.org/10.1016/j.jembe.2019.03.001
    Mortelmans, J.; Deneudt, K.; Cattrijsse, A.; Beauchard, O.; Daveloose, I.; Vyverman, W.; Vanaverbeke, J.; Timmermans, K.; Peene, J.; Roose, P.; Knockaert, M.; Chou, L.; Sanders, R.; Stinchcombe, M.; Kimpe, P.; Lammens, S.; Theetaert, H.; Gkritzalis, T.; Hernandez, F.; Mees, J. (2019). Nutrient, pigment, suspended matter and turbidity measurements in the Belgian part of the North Sea. Scientific Data 6(1): 22. https://dx.doi.org/10.1038/s41597-019-0032-7
    Timmermans, K.R.; Lubsch, A. (2019). Uptake kinetics and storage capacity of dissolved inorganic phosphorus and corresponding dissolved inorganic nitrate uptake in Saccharina latissima and Laminaria digitata (Phaeophyceae). J. Phycol. 55(3): 637-650. https://dx.doi.org/10.1111/jpy.12844
  • 2018
    Lubsch, A.; Timmermans, K. (2018). Uptake kinetics and storage capacity of dissolved inorganic phosphorus and corresponding N:P dynamics in Ulva lactuca (Chlorophyta). J. Phycol. 54(2): 215-223. https://dx.doi.org/10.4121/uuid:8b5f7d71-27f3-4b92-b599-2cb3ac76d0aa
    Luttikhuizen, P.C.; van den Heuvel, F.H.M.; Rebours, C.; Witte, H.J.; van Bleijswijk, J.D.L.; Timmermans, K. (2018). Strong population structure but no equilibrium yet: Genetic connectivity and phylogeography in the kelp Saccharina latissima (Laminariales, Phaeophyta). Ecol. Evol. 8(8): 4265-4277. https://doi.org/10.1002/ece3.3968
    van der Molen, J.; Ruardij, P.; Mooney, K.; Kerrison, P.; O'Connor, N.E.; Gorman, E.; Timmermans, K.; Wright, S.; Kelly, M.; Hughes, A.D.; Capuzzo (2018). Modelling potential production of macroalgae farms in UK and Dutch coastal waters. Biogeosciences 15(4): 1123-1147. https://dx.doi.org/10.5194/bg-15-1123-2018
  • 2017
    Fernand, F.; Israel, A.; Skjermo, J.; Wichard, T.; Timmermans, K. (2017). Offshore macroalgae biomass for bioenergy production: Environmental aspects, technological achievements and challenges. Renew. Sust. Energ. Rev. 75: 35-45. https://dx.doi.org/10.1016/j.rser.2016.10.046
    Lubsch, A.; Timmermans, K. (2017). Texture analysis of Laminaria digitata (Phaeophyceae) thallus reveals trade-off between tissue tensile strength and toughness along lamina. Bot. Mar. 60(2). https://doi.org/10.1515/bot-2016-0075
  • 2015
    Gerringa, L.J.A.; Rijkenberg, M.J.A.; Laan, P. ; Timmermans, K.R. (2015). Cycles in the ocean. Mar. Chem. 177(Part 3): 409-410. dx.doi.org/10.1016/j.marchem.2015.08.006
    Gledhill, M.; Gerringa, L.J.A.; Laan, P.; Timmermans, K.R. (2015). Heme b quotas are low in Southern Ocean phytoplankton. Mar. Ecol. Prog. Ser. 532: 29-40. dx.doi.org/10.3354/meps11345
    Mojica, K.D.A.; van de Poll, W.H.; Kehoe, M.; Huisman, J.; Timmermans, K.R.; Buma, A.G.J.; Van der Woerd, H.J.; Hahn-Woernle, L.; Dijkstra, H.A.; Brussaard, C.P.D. (2015). Phytoplankton community structure in relation to vertical stratification along a north-south gradient in the Northeast Atlantic Ocean, in: Mojica, K.D.A. Viral lysis of marine microbes in relation to vertical stratification. pp. 75-116
    Mojica, K.D.A.; van de Poll, W.H.; Kehoe, M.; Huisman, J.; Timmermans, K.R.; Buma, A.G.J.; Van der Woerd, H.J.; Hahn-Woernle, L.; Dijkstra, H.A.; Brussaard, C.P.D. (2015). Phytoplankton community structure in relation to vertical stratification along a north-south gradient in the Northeast Atlantic Ocean. Limnol. Oceanogr. 60(5): 1498–1521. https://dx.doi.org/10.1002/lno.10113
    Peperzak, L.; van der Woerd, H.J.; Timmermans, K.R. (2015). Disparities between in situ and optically derived carbon biomassand growth rates of the prymnesiophyte Phaeocystis globosa. Biogeosciences 12: 1659-1670. dx.doi.org/10.5194/bg-12-1659-2015
  • 2014
    Maat, D.S.; Crawfurd, K.J.; Timmermans, K.R.; Brussaard, C.P.D. (2014). Elevated CO2 and Phosphate Limitation Favor Micromonas pusilla through Stimulated Growth and Reduced Viral Impact. Appl. Environ. Microbiol. 80(10): 3119-3127. dx.doi.org/10.1128/AEM.03639-13
    Timmermans, K.R.; Brinkhuis, H. (2014). Zeewier, in: Het beste idee van 2014. pp. 69-71
  • 2013
    van de Poll, W.H.; Kulk, G.; Timmermans, K.R.; Brussaard, C.P.D.; van der Woerd, H.J.; Kehoe, M.J.; Mojica, K.D.A.; Visser, R.J.W.; Rozema, P.D.; Buma, A.G.J. (2013). Phytoplankton chlorophyll a biomass, composition, and productivity along a temperature and stratification gradient in the northeast Atlantic Ocean. Biogeosciences 10(6): 4227-4240. dx.doi.org/10.5194/bg-10-4227-2013
  • 2012
    Hoogstraten, A.; Peters, M.; Timmermans, K.R.; de Baar, H.J.W. (2012). Combined effects of inorganic carbon and light on Phaeocystis globosa Scherffel (Prymnesiophyceae). Biogeosciences 9(5): 1885-1896. dx.doi.org/10.5194/bg-9-1885-2012
    Hoogstraten, A.; Timmermans, K.R.; de Baar, H.J.W. (2012). Morphological and Physiological Effects in Proboscia Alata (Bacillariophyceae)Grown under Different Light and CO2 Conditions of the Modern Southern Ocean. J. Phycol. 48(3): 559-568. dx.doi.org/10.1111/j.1529-8817.2012.01148.x
  • 2011
    Peperzak, L.; Timmermans, K.R.; Wernand, M.R.; Oosterhuis, S.; van der Woerd, H.J. (2011). A mesocosm tool to optically study phytoplankton dynamics. Limnol. Oceanogr., Methods 9: 232-244. dx.doi.org/10.4319/lom.2011.9.232

Linked projects

Life cycles of seaweeds & seagrasses
Supervisor
Klaas Timmermans
Funder
Utrecht University
Project duration
1 Jan 2016 - 31 Dec 2026
Vegetable Biomass from Sea
Supervisor
Klaas Timmermans
Funder
Provincie Noord-Holland
Project duration
1 Jan 2017 - 1 Oct 2018
Production and losses of native North Sea seaweed species
Supervisor
Klaas Timmermans
Funder
NA
Project duration
31 Dec 2011 - 1 Jan 2017
Seaweed Hatchery: selection of clones for growth in North Sea farms
Supervisor
Klaas Timmermans
Funder
Ministry of Economic Affairs
Project duration
1 Jan 2016 - 31 Aug 2016
Culturing seaweed for fish farming
Supervisor
Klaas Timmermans
Funder
NA
Project duration
1 Sep 2015 - 31 Dec 2015
Life cycles of seaweeds & seagrasses
Supervisor
Klaas Timmermans
Funder
Utrecht University
Project duration
1 Jan 2016 - 31 Dec 2026
EFRO_Seaweed Cultivation
Supervisor
Klaas Timmermans
Funder
European Community
Project duration
1 May 2016 - 30 Apr 2019
ValgOrize Valorisation of algae for a better taste
Supervisor
Klaas Timmermans
Funder
Interreg 2 Seas
Project duration
30 Jun 2018 - 31 Dec 2021
UUNIOZ_Greenland fjords as gateways between the ice sheet and the ocean
Supervisor
Klaas Timmermans
Funder
Utrecht University
Project duration
1 Jan 2021 - 31 Dec 2025
FS2S_Transition to a sustainable marine LTA protein production system
Supervisor
Klaas Timmermans
Funder
Netherlands Organization for Scientific Research
Project duration
1 Apr 2022 - 31 Mar 2026