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Number of items: 36.

Article in a Scientific Journal - peer-reviewed

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Winder, M., Bouquet, J. M., Bermudez, J. R., Berger, S. A., Hansen, T., Brandes, J., Sazhin, A. F., Nejstgaard, J. C., Båmstedt, U., Jakobsen, H. H., Dutz, J., Frischer, M. E., Troedsson, C. and Thompson, E. M. (2017) Increased appendicularian zooplankton alter carbon cycling under warmer more acidified ocean conditions Limnology and Oceanography, 62 (4). pp. 1541-1551. DOI 10.1002/lno.10516.

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Garzke, J., Hansen, T., Ismar, S. M. H. and Sommer, U. (2016) Combined Effects of Ocean Warming and Acidification on Copepod Abundance, Body Size and Fatty Acid Content PLoS ONE, 11 (5). e0155952. DOI 10.1371/journal.pone.0155952.

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Kürten, B., Al-Aidaroos, A. M., Kürten, S., El-Sherbiny, M. M., Devassy, R. P., Struck, U., Zarokanellos, N., Jones, B. H., Hansen, T., Bruss, G. and Sommer, U. (2016) Carbon and nitrogen stable isotope ratios of pelagic zooplankton elucidate ecohydrographic features in the oligotrophic Red Sea Progress in Oceanography, 140 . pp. 69-90. DOI 10.1016/j.pocean.2015.11.003.

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Hauss, H., Franz, J., Hansen, T., Struck, U. and Sommer, U. (2013) Relative inputs of upwelled and atmospheric nitrogen to the eastern tropical North Atlantic food web: Spatial distribution of δ15N in mesozooplankton and relation to dissolved nutrient dynamics Deep Sea Research Part I: Oceanographic Research Papers, 75 . pp. 135-145. DOI 10.1016/j.dsr.2013.01.010.

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Aberle, N., Hansen, T., Böttger-Schnack, R., Burmeister, A., Post, A. F. and Sommer, U. (2010) Differential routing of "new" nitrogen towards higher trophic levels within the marine food web of the Gulf of Aqaba, northern Red Sea Marine Biology, 157 . pp. 157-169. DOI 10.1007/s00227-009-1306-y.

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Javidpour, J., Molinero, J. C., Lehmann, A., Hansen, T. and Sommer, U. (2009) Annual assessment of the predation of Mnemiopsis leidyi in a new invaded environment, the Kiel Fjord (Western Baltic Sea): a matter of concern? Journal of Plankton Research, 31 (7). pp. 729-738. DOI 10.1093/plankt/fbp021.

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Ismar, S. M. H., Hansen, T. and Sommer, U. (2008) Effect of food concentration and type of diet on Acartia survival and naupliar development Marine Biology, 154 . pp. 335-343. DOI 10.1007/s00227-008-0928-9.

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Jaschinski, S., Hansen, T. and Sommer, U. (2008) Effects of Acidification in multiple stable Isotope Analyses Limnology and Oceanography: Methods, 6 . pp. 12-15. DOI 10.4319/lom.2008.6.12.

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Sommer, U., Aberle, N., Engel, A., Hansen, T., Lengfellner, K., Sandow, M., Wohlers, J., Zöllner, E. and Riebesell, U. (2007) An indoor mesocosm system to study the effect of climate change on the late winter and spring succession of Baltic Sea phyto- and zooplankton Oecologia, 150 (4). pp. 655-667. DOI 10.1007/s00442-006-0539-4.

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Sommer, F., Hansen, T. and Sommer, U. (2006) Transfer of diazotrophic nitrogen to mesozooplankton in Kiel Fjord, Western Baltic Sea: a mesocosm study Marine Ecology Progress Series, 324 . pp. 105-112. DOI 10.3354/meps324105.

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Sommer, F., Saage, A., Santer, B., Hansen, T. and Sommer, U. (2005) Linking foraging strategies of marine calanoid copepods to patterns of nitrogen stable isotope signatures in a mesocosm study Marine Ecology Progress Series, 286 . pp. 99-106. DOI 10.3354/meps286099.

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Stibor, H., Vadstein, O., Diehl, S., Gelzleichter, A., Hansen, T., Hantzsche, F., Katechakis, A., Lippert, B., Loeseth, K., Petersen, C., Roederer, W., Sandow, M., Sundt-Hansen, L. and Olsen, Y. (2004) Copepods act as switch between alternative trophic cascades in marine pelagic food webs Ecology Letters, 7 (4). pp. 321-328. DOI 10.1111/j.1461-0248.2004.00580.x.

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Ptacnik, R., Sommer, U., Hansen, T. and Martens, V. (2004) Effects of microzooplankton and mixotrophy in an experimental planktonic food web Limnology and Oceanography, 49 . pp. 1435-1445. DOI 10.4319/lo.2004.49.4_part_2.1435.

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Sommer, U., Hansen, T., Stibor, H. and Vadstein, O. (2004) Persistence of phytoplankton responses to different Si:N ratios under mesozooplankton grazing pressure: a mesocosm study with Northeast Atlantic plankton Marine Ecology Progress Series, 278 . pp. 67-75. DOI 10.3354/meps278067.

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Sommer, F., Santer, B., Jamieson, C., Hansen, T. and Sommer, U. (2003) Daphnia population growth but not moulting is a substantial phosphorus drain for phytoplankton Freshwater Biology, 48 (1). pp. 67-74.

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Sommer, F., Hansen, T., Feuchtmayr, H., Santer, B., Tokle, N. and Sommer, U. (2003) Do calanoid copepods supress appendicularians in the coastal ocean? Journal of Plankton Research, 25 . pp. 869-871. DOI 10.1093/plankt/25.7.869.

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Sommer, U., Berninger, U. G., Böttger-Schnack, R., Cornils, A., Hagen, W., Hansen, T., Al-Najjar, T., Post, A. F., Schnack-Schiel, S. B., Stibor, H., Stübing, D. and Wickham, S. (2002) Grazing during the spring bloom in the Gulf of Aquaba and the Northern Red Sea Marine Ecology Progress Series, 239 . pp. 251-261. DOI 10.3354/meps239251.

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Sommer, U., Sommer, F., Santer, B., Jamieson, C., Boersma, M., Becker, C. and Hansen, T. (2001) Complementary impact of copepods and cladocerans on phytoplankton Ecology Letters, 4 (6). pp. 545-550. DOI 10.1046/j.1461-0248.2001.00263.x.

Book chapter

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Sommer, U., Stibor, H., Katechakis, A., Sommer, F. and Hansen, T. (2002) Pelagic food web configurations at different levels of nutrient richness and their implications for the ratio fish production: primary production Sustainable Increase of Marine Harvesting: Fundamental Mechanisms and New Concepts: Proceedings of the 1 st Maricult Conference held in Trondheim, Norway, 25-28 June 2000. Developments in Hydrobiology, 167 . Springer, Berlin, Germany, pp. 11-20. ISBN 978-90-481-6217-8 DOI 10.1007/978-94-017-3190-4_2.

Conference presentation


Lengfellner, K., Aberle, N., Sandow, M., Hansen, T. and Sommer, U. (2006) The impact of climate change on plankton spring succession: a mesocosm study [Talk] In: ASLO 2006 Summer Meeting, 05.06, Victoria, British Columbia, Canada.


Agurto, C., Sommer, F., Sommer, U. and Hansen, T. (2005) Assessing trophic levels of mesozooplankton in the central Baltic Sea and North Sea: a stable isotope study [Other] In: UNSPECIFIED, 03.10, Valdivia, Chile.


Lengfellner, K., Aberle, N., Sandow, M., Hansen, T. and Sommer, U. (2005) Plankton spring succession in response to warming winters [Other] In: 2. AQUASHIFT Workshop, 28.09.2005, Kiel.


Agurto, C., Sommer, F., Sommer, U., Hansen, T. and Rautenstrauch, C. (2005) Stable isotope (δ13C and 15N signatures analyses) signatures of mesozooplankton and seston size fractions at the Central Baltic Sea: Bornholm Basin [Other] In: FE Seminar, 02.09, Kiel.


Agurto, C., Sommer, F., Sommer, U., Hansen, T. and Rautenstrauch, C. (2005) Trophic structure of mesozooplankton in the Central Baltic Sea: δ13C and 15N signatures analysis [Other] In: Cycle of Conferences in Oceanography, 24.01, Concepción, Chile.

Conference poster


Mittermayr, A. and Hansen, T. (2014) Tracing eelgrass foodwebs: simultaneous analysis of d13C, d15N and d34S of low biomass samples [Poster] In: Advances in Stable Isotope Techniques and Applications (ASITA), 15.-18.06.2014, Davis, CA, USA.


Ismar, S. M. H., Lengfellner, K., Hansen, T. and Sommer, U. (2006) Climate change impacts on the autumn succession of phytoplankton: an experimental analysis with Baltic Sea plankton [Poster] In: ASTRA Conference Are we prepared to cope with climate changes?- Consequences of the winter storm 2005, 18.-19.05.2006, Klaipeda, Lithuania.

Report - Cruise Report


Wallace, D. W. R., Tanhua, T., Banyte, D., Dippe, T., Karbe, F. R., Link, R., Silva, P., Franz, J., Hansen, T., Hauss, H., Nachtigall, K., Franzke, D., Fuessel, J., Kalvelage, T., Fischer, T., Gill, D., Kock, A., Stange, K., Baars, O., Dammshäuser, A., Manke, A., Noll, L., Syre, S., Zocher, J. and Raeke, A. (2013) Guinea Upwelling Tracer Release Experiment – Cruise No. M80/2 – November 26 – December 22, 2009 – Mindelo (Cape Verde) – Dakar (Senegal) Meteor-Berichte, M80/2 . UNSPECIFIED. DOI 10.2312/cr_m80_2.

This list was generated on Thu May 28 20:32:04 2020 CEST.