Items where Author is "Engel, Anja"

Article

Fong, A. A. , Hoppe, C. J.

, Aberle, N. , Ashjian, C. J. , Assmy, P. , Bai, Y. , Bakker, D. C. , Balmonte, J. P. , Barry, K. R. , Bertilsson, S. , Boulton, W. , Bowman, J. , Bozzato, D. , Bratbak, G. , Buck, M. , Campbell, R. G. , Castellani, G. , Chamberlain, E. J. , Chen, J. , Chierici, M. , Cornils, A.

, Creamean, J. M. , Damm, E. , Dethloff, K. , Droste, E. S. , Ebenhöh, O. , Eggers, S. L. , Engel, A. , Flores, H.

, Fransson, A. , Frickenhaus, S.

, Gardner, J. , Gelfman, C. E. , Granskog, M. A. , Graeve, M. , Havermans, C.

, Heuzé, C. , Hildebrandt, N. , Hill, T. C. , Hoppema, M.

, Immerz, A. , Jin, H. , Koch, B. P.

, Kong, X.

, Kraberg, A.

, Lan, M. , Lange, B. A. , Larsen, A. , Lebreton, B. , Leu, E. , Loose, B. , Maslowski, W. , Mavis, C. , Metfies, K.

, Mock, T. , Müller, O. , Nicolaus, M.

, Niehoff, B. , Nomura, D. , Nöthig, E. M.

, Oggier, M. , Oldenburg, E. , Olsen, L. M. , Peeken, I.

, Perovich, D. K. , Popa, O. , Rabe, B.

, Ren, J. , Rex, M.

, Rinke, A.

, Rokitta, S.

, Sakinan, S. , Rost, B. , Salganik, E. , Schaafsma, F. L. , Schäfer, H. , Schmidt, K. , Shoemaker, K. M. , Shupe, M. D. , Snoeijs-Leijonmalm, P. , Stefels, J. , Svenson, A. , Tao, R.

, Torres-Valdés, S. , Torstensson, A. , Toseland, A. , Ulfsbo, A. , Van Leeuwe, M. A. , Vortkamp, M. , Webb, A. L. , Zhuang, Y. and Gradinger, R. R. (2024)
Overview of the MOSAiC expedition: Ecosystem ,

Elem Sci Anth, 12 (1) .

doi:10.1525/elementa.2023.00135 , hdl:10013/epic.1b886321-8106-462f-a463-0c99dab9353a

[thumbnail of Fong et al. 2024 ECO Overview.pdf]

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Article

Wietz, M. , Engel, A. , Ramondenc, S. , Niwano, M. , Appen, W. , Priest, T. , Jackowski, A. , Metfies, K. , Bienhold, C. and Boetius, A.

(2024)
The Arctic summer microbiome across Fram Strait: Depth, longitude, and substrate concentrations structure microbial diversity in the euphotic zone ,

Environmental Microbiology, 26 , e16568-e16568 .

doi:10.1111/1462-2920.16568 , hdl:10013/epic.d208def7-3f43-411c-87c9-ab493f6217bf

[thumbnail of Wietz 2024_CTD_FramStraitMicrobiome.pdf]

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Article

von Jackowski, A. , Becker, K. W. , Wietz, M.

, Bienhold, C.

, Zäncker, B. , Nöthig, E.

and Engel, A. (2022)
Variations of microbial communities and substrate regimes in the eastern Fram Strait between summer and fall ,

Environmental Microbiology, 24 (9), pp. 4124-4136 .

doi:10.1111/1462-2920.16036 , hdl:10013/epic.eddbb920-6ebb-43f7-a257-279fb8cc4dea

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Article

Grosse, J.

, Nöthig, E. M.

, Torres-Valdes, S.

and Engel, A. (2021)
Summertime Amino Acid and Carbohydrate Patterns in Particulate and Dissolved Organic Carbon Across Fram Strait ,

frontiers in Marine Science .

doi:10.3389/fmars.2021.684675 , hdl:10013/epic.f3132789-6436-4f6c-86dc-b71ac7d4b679

Article

Fadeev, E.

, Wietz, M.

, von Appen, W.

, Iversen, M. H.

, Nöthig, E.

, Engel, A.

, Grosse, J.

, Graeve, M.

and Boetius, A.

(2021)
Submesoscale physicochemical dynamics directly shape bacterioplankton community structure in space and time ,

Limnology and Oceanography, 66 , pp. 2901-2913 .

doi:10.1002/lno.11799 , hdl:10013/epic.af8b9451-29dc-4430-bd9b-dd1378c4f854

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Article

Piontek, J. , Galgani, L. , Nöthig, E. M.

, Peeken, I.

and Engel, A. (2020)
Organic matter composition and heterotrophic bacterial activity at declining summer sea ice in the central Arctic Ocean ,

Limnology and Oceanography, pp. 1-20 .

doi:10.1002/lno.11639 , hdl:10013/epic.2a53a98c-32f3-4151-a00a-54a4cc116d7e

Article

von Jackowski, A. , Grosse, J. , Nöthig, E. M.

and Engel, A. (2020)
Dynamics of organic matter and bacterial activity in the Fram Strait during summer and autumn ,

Philosophical Transactions of the Royal Society A, 378 (2181) .

doi:10.1098/rsta.2019.0366 , hdl:10013/epic.390f7925-a6c3-47ca-b8e5-9d3043cc6b38

Article

Wagner, S. , Schubotz, F. , Kaiser, K. , Hallmann, C. , Waska, H. , Rossel, P. E. , Hansman, R. , Elvert, M. , Middelburg, J. J. , Engel, A. , Blattmann, T. M. , Catalá, T. S. , Lennartz, S. T. , Gomez-Saez, G. V.

, Pantoja-Gutiérrez, S. , Bao, R. and Galy, V. (2020)
Soothsaying DOM: A Current Perspective on the Future of Oceanic Dissolved Organic Carbon ,

Frontiers in Marine Science, 7 (341), pp. 1-17 .

doi:10.3389/fmars.2020.00341 , hdl:10013/epic.9d07e3a2-096e-43a0-865f-0e087fa0ed58

Article

Engel, A. , Bracher, A. , Dinter, T. , Endres, S. , Grosse, J. , Metfies, K.

, Peeken, I. , Piontek, J. , Salter, I. and Nöthig, E. M.

(2019)
Inter-Annual Variability of Organic Carbon Concentration in the Eastern Fram Strait During Summer (2009–2017) ,

Frontiers in Marine Science .

doi:10.3389/fmars.2019.00187 , hdl:10013/epic.d144b85f-c4e1-474b-bf7c-02487b4f7f3f

Article

Laurenceau-Cornec, E. , Le Moigne, F. A. , Gallinari, M. , Moriceau, B. , Toullec, J. , Iversen, M.

, Engel, A. and De La Rocha, C. (2019)
New guidelines for the application of Stokes' models to the sinking velocity of marine aggregates ,

Limnology and Oceanography .

doi:10.1002/lno.11388 , hdl:10013/epic.d732e139-df39-4f21-9e2b-8b3fa2bb3d21

Article

Fadeev, E.

, Salter, I.

, Schourup-Kristensen, V. , Metfies, K.

, Nöthig, E. M.

, Engel, A. , Piontek, J. , Boetius, A.

and Bienhold, C.

(2018)
Microbial Communities in the East and West Fram Strait During Sea Ice Melting Season ,

Frontiers in Marine Science .

doi:10.3389/fmars.2018.00429 , hdl:10013/epic.c75ca22f-ac8c-48a4-83ab-c29a96ddcd0f

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Article

Engel, A. , Piontek, J. , Metfies, K.

, Endres, S. , Peeken, I.

, Gäbler-Schwarz, S. and Nöthig, E. M.

(2017)
Inter-annual variability of transparent exopolymer particles in the Arctic Ocean reveals high sensitivity to ecosystem changes ,

Scientific Reports, 7 (4129) .

doi:10.1038/s41598-017-04106-9 , hdl:10013/epic.51718

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Article

Busch, K. , Endres, S. , Iversen, M. H.

, Michels, J. , Nöthig, E. M.

and Engel, A. (2017)
Bacterial Colonization and Vertical Distribution of Marine Gel Particles (TEP and CSP) in the Arctic Fram Strait ,

Frontiers in Marine Science, 4 (166), pp. 1-14 .

doi:10.3389/fmars.2017.00166 , hdl:10013/epic.51293

Article

Sperling, M. , Piontek, J. , Engel, A. , Wiltshire, K. H.

, Niggemann, J. , Gerdts, G.

and Wichels, A.

(2017)
Combined carbohydrates support rich communities of particle-associated marine bacterioplankton ,

Frontiers in Microbiology .

doi:10.3389/fmicb.2017.00065 , hdl:10013/epic.50632

Article

Hepach, H. , Quack, B. , Tegtmeier, S. , Engel, A. , Bracher, A.

, Fuhlbrügge, S. , Galgani, L. , Atlas, E. L. , Lampel, J. , Frieß, U. and Krüger, K. (2016)
Biogenic halocarbons from the Peruvian upwelling region as tropospheric halogen source. ,

Atmospheric Chemistry and Physics, 16 , pp. 12219-12237 .

doi:10.5194/acp-16-12219-2016 , hdl:10013/epic.48657

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Article

Löscher, C. R. , Bange, H. W. , Schmitz, R. A. , Callbeck, C. M. , Engel, A. , Hauss, H. , Kanzow, T. , Kiko, R. , Lavik, G. , Loginova, A. , Melzner, F. , Meyer, J. , Neulinger, S. C. , Pahlow, M. , Riebesell, U. , Schunck, H. , Thomsen, S. and Wagner, H. (2016)
Water column biogeochemistry of oxygen minimum zones in the eastern tropical North Atlantic and eastern tropical South Pacific oceans ,

Biogeosciences, 13 (12), pp. 3585-3606 .

doi:10.5194/bg-13-3585-2016 , hdl:10013/epic.51180

Article

Galgani, L. , Piontek, J. and Engel, A. (2016)
Biopolymers form a gelatinous microlayer at the air-sea interface when Arctic sea ice melts ,

Scientific Reports, 6 , p. 10 .

hdl:10013/epic.51112

Article

Galgani, L. and Engel, A. (2016)
Changes in optical characteristics of surface microlayers hint to photochemically and microbially mediated DOM turnover in the upwelling region off the coast of Peru ,

Biogeosciences, 13 (8), pp. 2453-2473 .

hdl:10013/epic.51110

Article

Nöthig, E. M.

, Bracher, A.

, Engel, A. , Metfies, K.

, Niehoff, B. , Peeken, I.

, Bauerfeind, E. , Cherkasheva, A. , Gäbler-Schwarz, S. , Hardge, K. , Kilias, E. , Kraft, A. , Mebrahtom Kidane, Y. , Lalande, C. , Piontek, J. , Thomisch, K.

and Wurst, M. (2015)
Summertime plankton ecology in Fram Strait - a compilation of long- and short-term observations ,

Polar Research, 34 .

doi:10.3402/polar.v34.23349 , hdl:10013/epic.46457

Article

Piontek, J. , Sperling, M. , Nöthig, E. M.

and Engel, A. (2015)
Multiple environmental changes induce interactive effects on bacterial degradation activity in the Arctic Ocean ,

Limnology and Oceanography, 60 (4), pp. 1392-1410 .

doi:10.1002/lno.10112 , hdl:10013/epic.46265

Article

Borchard, C. and Engel, A. (2015)
Size-fractionated dissolved primary production and carbohydrate composition of the coccolithophore Emiliania huxleyi ,

Biogeosciences, 12 (4), pp. 1271-1284 .

hdl:10013/epic.51109

Article

Piontek, J. , Sperling, M. , Nöthig, E. M.

and Engel, A. (2014)
Regulation of bacterioplankton activity in Fram Strait (Arctic Ocean) during early summer: The role of organic matter supply and temperature ,

Journal of Marine Systems, 132 , pp. 83-94 .

doi:10.1016/j.jmarsys.2014.01.003 , hdl:10013/epic.43193

Article

Galgani, L. , Stolle, C. , Endres, S. , Schulz, K. G. and Engel, A. (2014)
Effects of ocean acidification on the biogenic composition of the sea-surface microlayer: Results from a mesocosm study ,

Journal of Geophysical Research-Oceans, 119 (11), pp. 7911-7924 .

hdl:10013/epic.51108

Article

Engel, A. , Piontek, J. , Grossart, H. P. , Riebesell, U. , Schulz, K. G. and Sperling, M. (2014)
Impact of CO2 enrichment on organic matter dynamics during nutrient induced coastal phytoplankton blooms ,

Journal of Plankton Research, 36 (3), pp. 641-657 .

hdl:10013/epic.51107

Article

Engel, A. , Novoa, C. , Wurst, M. , Endres, S. , Tang, T. , Schartau, M. and Lee, C. (2014)
No detectable effect of CO2 on elemental stoichiometry of Emiliania huxleyi in nutrient-limited, acclimated continuous cultures ,

Marine Ecology-Progress Series, 507 , pp. 15-30 .

hdl:10013/epic.51105

Article

Endres, S. , Galgani, L. , Riebesell, U. , Schulz, K. G. and Engel, A. (2014)
Stimulated Bacterial Growth under Elevated pCO(2): Results from an Off-Shore Mesocosm Study ,

PLoS ONE, 9 (6), p. 8 .

hdl:10013/epic.51104

Article

Cisternas-Nuevo, C. , Lee, C. and Engel, A. (2014)
A semi-quantitative spectrophometric, dye-binding assay for determination of Coomassie Blue stainable particles ,

Limnology and Oceanography-Methods, 12 , pp. 604-616 .

hdl:10013/epic.51113

Article

Assmy, P. , Ehn, J. K. , Fernandez Mendez, M. , Hop, H. , Katlein, C.

, Sundfjord, A. , Bluhm, K. , Daase, M. , Engel, A. , Fransson, A. , Granskog, M. A. , Hudson, S. R. , Kristiansen, S. , Nicolaus, M.

, Peeken, I.

, Renner, A. H. H. , Spreen, G. , Tatarek, A. and Wiktor, J. (2013)
Floating ice-algal aggregates below melting Arctic sea ice. ,

PLoS ONE, 8 (10), e76599 .

doi:10.1371/journal.pone.0076599 , hdl:10013/epic.42551

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Article

Czerny, J. , Schulz, K. G. , Boxhammer, T. , Bellerby, R. G. J. , Büdenbender, J. , Engel, A. , Krug, S. , Ludwig, A. , Nachtigall, K. , Nondal, G. , Niehoff, B. , Silyakova, A. and Riebesell, U. (2013)
Implications of elevated CO2 on pelagic carbon fluxes in an Arctic mesocosm study – an elemental mass balance approach ,

Biogeosciences, 10 , pp. 3109-3125 .

doi:10.5194/bg-10-3109-2013 , hdl:10013/epic.41547

Article

Engel, A. , Borchard, C. , Piontek, J. , Schulz, K. G. , Riebesell, U. and Bellerby, R. (2013)
CO2 increases C-14 primary production in an Arctic plankton community ,

Biogeosciences, 10 (3), pp. 1291-1308 .

doi:10.5194/bg-10-1291-2013 , hdl:10013/epic.51100

Article

Sperling, M. , Piontek, J. , Gerdts, G.

, Wichels, A.

, Schunk, H. , Roy, A. , La Roche, J. , Gilbert, J. , Nissimov, J. , Bittner, L. , Romac, S. , Riebesell, U. and Engel, A. (2013)
Effect of elevated CO2 on the dynamics of particle-attached and free-living bacterioplankton communities in an Arctic fjord ,

Biogeosciences, 10 , pp. 181-191 .

doi:10.5194/bg-10-181-2013 , hdl:10013/epic.40684

Article

Piontek, J. , Borchard, C. , Sperling, M. , Schulz, K. G. , Riebesell, U. and Engel, A. (2013)
Response of bacterioplankton activity in an Arctic fjord system to elevated pCO2: results from a mesocosm pertubation study ,

Biogeosciences, 10 (1), pp. 297-314 .

doi:10.5194/bg-10-297-2013 , hdl:10013/epic.51103

Article

Wannicke, N. , Endres, S. , Engel, A. , Grossart, H. P. , Nausch, M. , Unger, J. and Voss, M. (2012)
Response of Nodularia spumigena to pCO2 – Part 1: Growth, production and nitrogen cycling ,

Biogeosciences, 9 , pp. 2973-2988 .

doi:10.5194/bg-9-2973-2012 , hdl:10013/epic.40346

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Article

Endres, S. , Unger, J. , Wannicke, N. , Nausch, M. , Voss, M. and Engel, A. (2012)
Response of Nodularia spumigena to pCO2 – Part 2: Exudation and extracellular enzyme activities ,

Biogeosciences Discussions, 9 .

doi:10.5194/bgd-9-5109-2012 , hdl:10013/epic.40340

Article

Unger, J. , Endres, S. , Wannicke, N. , Engel, A. , Voss, M. , Nausch, G. and Nausch, M. (2012)
Response of Nodularia spumigena to pCO2 – Part 3: Turnover of phosphorus compounds ,

Biogeosciences Discussions, 9 .

doi:10.5194/bgd-9-14709-2012 , hdl:10013/epic.40342

Article

Borchard, C. , Borges, A. V. , Händel, N. and Engel, A. (2011)
Biogeochemical response of Emiliania huxleyi (PML 92/11) to elevated CO2 and temperature under phosphorous limitation: a chemostat study ,

Journal of Experimental Marine Biology and Ecology, (410), pp. 61-71 .

hdl:10013/epic.43394

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Article

Kim, J. H. , Lee, K. , Shin, K. , Yang, E. J. , Engel, A. , Karl, D. and Kim, H. C. (2011)
Shifts in biogenic carbon flow from particulate to dissolved forms under high carbon dioxide and warm ocean conditions ,

Geophysical Research Letters. 38 , L08612 .

doi:10.1029/2011GL047346 , hdl:10013/epic.37415

Article

Piontek, J. , Lunau, M. , Händel, N. , Borchard, C. , Wurst, M. and Engel, A. (2010)
Acidification increases microbial polysaccharide degradation in the ocean ,

Biogeosciences, 71624., 1615 .

hdl:10013/epic.35262

Article

Harlay, J. , Chou, L. , De Bodt, C. , Van Oostende, N. , Piontek, J. , Suykens, K. , Engel, A. , Sabbe, K. , Groom, S. , Delille, B. and Borges, A. V. (2010)
Biogeochemistry and carbon mass balance of a coccolithophore bloom in the northern Bay of Biscay (June 2006) ,

Deep Sea Research I, 58 , pp. 111-127 .

hdl:10013/epic.36727

Article

Biermann, A. and Engel, A. (2010)
Effect of CO2 on the properties and sinking velocity of aggregates of the coccolithophore Emiliania huxleyi ,

Biogeosciences, 7 , pp. 1017-1029 .

hdl:10013/epic.34523

Article

Engel, A. , Händel, N. , Wohlers, J. , Lunau, M. , Grossart, H. P. , Sommer, U. and Riebesell, U. (2010)
Effects of sea surface warming on the production and composition of dissolved organic matter during phytoplankton blooms: Results from a mesocosm study ,

Journal of Plankton Research .

doi:10.1093/plankt/fbq122 , hdl:10013/epic.36120

Article

Harlay, J. , De Bodt, C. , Engel, A. , Jansen, S. , d'Hoop, Q. , Piontek, J. , Van Oostende, N. , Groom, S. , Sabbe, K. and Chou, L. (2009)
Abundance and size distribution of transparent exopolymer particles (TEP) in a coccolithophorid bloom in the northern Bay of Biscay ,

Deep Sea Research I., 56 , pp. 1251-1265 .

doi:10.1016/j.dsr.2009.01.014 , hdl:10013/epic.33297

Article

Wohlers, J. , Engel, A. , Zöllner, E. , Breithaupt, P. , Jürgens, K. , Hoppe, H. G. , Sommer, U. and Riebesell, U. (2009)
Changes in biogenic carbon flow in response to sea surface warming ,

PNAS, 106 (17), pp. 7067-7072 .

doi:10.1073/pnas.0812743106 , hdl:10013/epic.32551

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Article

Biermann, A. and Engel, A. (2009)
Effect of CO2 on the properties and sinking velocity of aggregates of the coccolithophore Emiliania huxleyi ,

Biogeosciences Discussion, 6 , pp. 9817-9848 .

hdl:10013/epic.34390

Article

Piontek, J. , Händel, N. , Langer, G. , Wohlers, J. , Riebesell, U. and Engel, A. (2009)
Effects of rising temperature on the formation and microbial degradation of marine diatom aggregates ,

Aquatic Microbial Ecology:, 54 , pp. 305-318 .

doi:10.3354/ame01273 , hdl:10013/epic.32447

Article

Engel, A. and Nöthig, E. M.

(2009)
Future carbon cycling in the Arctic Ocean ,

iLEAPS Newsletter, 8 , pp. 25-27 .

hdl:10013/epic.34018

Article

Engel, A. , Szlosek, J. , Abramson, L. , Liu, Z. and Lee, C. (2009)
Investigating the effect of ballasting by CaCO3 in Emiliania huxleyi: I. Formation, settling velocities and physical properties of aggregates ,

Deep Sea Research II, 56 , pp. 1396-1407 .

doi:10.1016/j.dsr2.2008.11.027 , hdl:10013/epic.32913

Article

Engel, A. , Abramson, L. , Szlosek, J. , Liu, Z. , Stewart, G. , Hirschberg, D. and Lee, C. (2009)
Investigating the effect of ballasting by CaCO3 in Emiliania huxleyi: II. Decomposition of particulate organic matter ,

Deep Sea Research II, 56 , pp. 1408-1419 .

doi:10.1016/j.dsr2.2008.11.027 , hdl:10013/epic.32914

Article

Lee, C. , Armstrong, R. A. , Cochran, J. K. , Engel, A. , Fowler, S. W. , Goutx, M. , Masque, P. , Miquel, J. C. , Peterson, M. , Tamburini, C. and Wakeham, S. (2009)
MedFlux: Investigations of particle flux in the Twilight Zone. ,

Deep-Sea Research II, 56., 1363 .

doi:10.1016/j.dsr2.2008.12.003 , hdl:10013/epic.32921

Article

Egge, J. K. , Thingstad, J. F. , Larsen, A. , Engel, A. , Wohlers, J. , Bellerby, R. and Riebesell, U. (2009)
Primary production during nutrient-induced blooms at elevated CO2 concentrations ,

Biogeosciences, 6 , pp. 877-885 .

hdl:10013/epic.32706

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Payan, S. , Camy-Peyret, C. , Oelhaf, H. , Wetzel, G. , Maucher, G. , Kleim, C. , Pirre, M. , Huret, N. , Engel, A. , Volk, M. C. , Kuellmann, H. , Kuttippurath, J. , Cortesi, U. , Bianchini, G. , Mencaraglia, F. , Raspollini, P. , Redaelli, G. , Vigouroux, C. , De Maziere, M. , Mikuteit, S. , Blumenstock, T. , Velazco, V. , Notholt, J. , Mahieu, M. , Duchatelet, P. , Smale, D. , Wood, S. , Jones, N. , Piccolo, C. , Payne, V. , Bracher, A.

, Glatthor, N. , Stiller, G. , Grunow, K. , Jeseck, P. , Te, Y. and Butz, A. (2009)
Validation and data characteristics of methane and nitrous oxide profiles observed by MIPAS and processed with Version 4.61 algorithm. ,

Atmospheric Chemistry and Physics, 9 , pp. 413-442 .

hdl:10013/epic.28638

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Article

Riebesell, U. , Bellerby, R. G. J. , Engel, A. , Fabry, V. J. , Hutchins, D. A. , Reusch, T. B. H. , Schulz, K. G. and Morel, F. M. M. (2008)
Comment on 'Phytoplankton Calcification in a High CO2 World' ,

Science, 322 (5907) .

doi:10.1126/science.1161096 , hdl:10013/epic.31623

Article

Engel, A. , Schulz, K. , Riebesell, U. , Bellerby, R. , Delille, B. and Schartau, M. (2008)
Effects of CO2 on particle size distribution and phytoplankton abundance during a mesocosm bloom experiment (PeECE II) ,

Biogeosciences, 5 , pp. 509-521 .

hdl:10013/epic.30302

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Article

Joassin, P. , Delille, B. , Soetaert, K. , Borges, A. V. , Chou, L. , Engel, A. , Gattuso, J. P. , Harlay, J. , Riebesell, U. , Suykens, K. and Gregoire, M. (2008)
MATHEMATICAL MODELING OF AN EMILIANA HUXLEYI COCCOLITHOPHORES BLOOM OCCURRING IN A MESOCOSM EXPERIMENT ,

Biogeosciences Discussion, 5, 787 .

hdl:10013/epic.30304

Article

Schartau, M. , Engel, A. and Colijn, F. (2008)
Transformation of dissolved organic matter and its diverse effect on higher trophic level ,

2008 ICES Annual Science Conference. .

hdl:10013/epic.31452

Article

Benthien, A.

, Zondervan, I. , Engel, A. , Hefter, J.

, Terbrüggen, A. and Riebesell, U. (2007)
Carbon isotopic fractionation during a mesocosm bloom experiment dominated by Emiliania huxleyi: Effects of CO2 concentration and primary production ,

Geochimica et cosmochimica acta, 71 (6), pp. 1528-1541 .

doi:10.1016/j.gca.2006.12.015 , hdl:10013/epic.24570

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Article

Engel, A. , Schulz, K. , Riebesell, U. , Bellerby, R. , Delille, B. and Schartau, M. (2007)
Effects of CO2 on particle size distribution and phytoplankton abundance during a mesocosm bloom experiment (PeECE II) ,

Biogeosciences Discussion, 4 , pp. 4101-4133 .

hdl:10013/epic.30195

Article

Passow, U. , De La Rocha, C. , Arnosti, C. , Grossart, H. P. , Murray, A. and Engel, A. (2007)
Microbial dynamics in autotrophic and heterotrophic seawater mesocosms. I. Effect of phytoplankton on the microbial loop ,

Aquatic microbial ecology, 49 (2), pp. 109-121 .

doi:10.3354/ame01138 , hdl:10013/epic.28500

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Article

Grossart, H. P. , Engel, A. , Arnosti, C. , De La Rocha, C. , Murray, A. and Passow, U. (2007)
Microbial dynamics in autotrophic and heterotrophic seawater mesocosms. III. Organic matter fluxes ,

Aquatic microbial ecology. 49(2), pp. 143-156 .

doi:10.3354/ame01140 , hdl:10013/epic.28501

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Article

Schartau, M. , Engel, A. , Schröter, J.

, Thoms, S. , Völker, C.

and Wolf-Gladrow, D.

(2007)
Modelling carbon overconsumption and the formation of extracellular particulate organic carbon ,

Biogeosciences, 4454., 433 .

hdl:10013/epic.26876

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Article

Egge, J. K. , Thingstad, J. F. , Engel, A. , Bellerby, R. and Riebesell, U. (2007)
Primary production during nutrient-induced blooms at elevated CO2 concentrations ,

Biogeosciences Discussion, 4 , pp. 4385-4410 .

hdl:10013/epic.30303

Article

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 , pp. 655-666 .

doi:10.1007/s00442-006-0539-4 , hdl:10013/epic.24957

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Article

Tilmes, S. , Müller, R. , Engel, A. , Rex, M.

and Russel III, J. M. (2006)
Chemical ozone loss in the Arctic and Antarctic stratosphere between 1992 and 2005 ,

Geophysical Research Letters, 33, L20812. .

doi:10.1029/2006GL026925 , hdl:10013/epic.28878

Article

Engel, A. , Zondervan, I. , Aerts, K. , Beaufort, L. , Benthien, A.

, Chou, L. , Delille, B. , Gattuso, J. P. , Harlay, J. , Heemann, C. , Hoffmann, L. , Jacquet, S. , Nejstgaard, J. , Pizay, M. D. , Rochelle-Newall, E. , Schneider, U. , Terbrüggen, A. and Riebesell, U. (2005)
Testing the direct effect of CO2 concentration on a bloom of the coccolithophorid Emiliania huxleyi in mesocosm experiments ,

Limnology and oceanography, 50 (2), pp. 493-507 .

hdl:10013/epic.23408

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Article

Engel, A. (2004)
Distribution of transparent exopolymer particles (TEP) in the northeast Atlantic Ocean and their potential significance for aggregation processes ,

Deep-Sea Research I, Vol 51(1), pp. 83-92 .

doi:10.1016/j.dsr.2003.09.001 , hdl:10013/epic.19733

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Article

Schneider, B. , Engel, A. and Schlitzer, R.

(2004)
Effects of depth- and CO2-dependent C:N ratios of particulate organic matter (POM) on the marine carbon cycle ,

Global biogeochemical cycles, 18, GB2015, pp. 1-13 .

doi:10.1029/2003GB002184 , hdl:10013/epic.20150

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Article

Engel, A. , Thoms, S. , Riebesell, U. , Rochelle-Newall, E. and Zondervan, I. (2004)
Polysaccharide aggregation as a potential sink of marine dissolved organic carbon ,

Nature, 428 (6986), pp. 929-932 .

doi:10.1038/nature02453 , hdl:10013/epic.20623

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Article

Engel, A. , Delille, B. , Jacquet, S. , Riebesell, U. , Rochelle-Newall, E. , Terbrüggen, A. and Zondervan, I. (2004)
Transparent exopolymer particles and dissolved organic carbon production by Emiliania huxleyi exposed to different CO2 concentrations: a mesocosm experiment ,

Aquatic microbial ecology:, 34 , pp. 93-104 .

hdl:10013/epic.19642

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Article

Passow, U. , Engel, A. and Ploug, H. (2003)
The role of aggregation for the dissolution of diatom frustules ,

Fems microbiology ecology, 46 , pp. 247-255 .

doi:10.1016/S0168-6496(03)00199-5 , hdl:10013/epic.16874

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Article

Engel, A. , Meyerhöfer, M. and von Bröckel, K. (2002)
Chemical and Biological Composition of Suspended Particles and Aggregates in the Baltic Sea in Summer (1999) ,

Estuarine coastal and shelf science, 55, 5 , pp. 729-741 .

hdl:10013/epic.15284

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Article

Engel, A. (2002)
Direct Relationship between CO2-uptake and Transparent Exopolymer Particles (TEP) Production in Natural Phytoplankton ,

Journal of Plankton Research, 24, 1 , pp. 49-53 .

hdl:10013/epic.15283

Article

Engel, A. , Goldthwait, S. , Passow, U. and Alldredge, A. (2002)
Temporal decoupling of carbon and nitrogen dynamics in a mesocosm diatom bloom ,

Limnology and Oceanography, 47, 3 , pp. 753-761 .

hdl:10013/epic.16009

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Article

Krembs, C. and Engel, A. (2001)
Abundance and variability of microorganisms and transparent exopolymer particles across the ice-water interface of melting first-year sea ice in the Laptev Sea (Arctic) ,

Marine Biology, 138 , pp. 173-185 .

hdl:10013/epic.15280

Article

Engel, A. and Passow, U. (2001)
Carbon and nitrogen content of transparent exopolymer particles (TEP) in relation to their Alcian Blue adsorption ,

Marine Ecology Progress Series, 219 , pp. 1-10 .

hdl:10013/epic.15282

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Article

Harris, N. R. P. , Guirlet, M. , Amanatidis, G. T. , Ancellet, G. , Braathen, G. , Bregman, A. , Engel, A. , Goede, A. , Goutail, F. , Hauchecorne, A. , Küllmann, H. , Larsen, N. , Mégie, G. , Murtagh, D. , Naujokat, B. , Noë, J. d. l. , Norton, W. , Oelhaf, H. , Peter, T. , Pfeilsticker, K. , Pommereau, J. P. , Pyle, J. A. , van Roozendael, M. , Schlager, H. , Schmidt, U. , Stefanutti, L. , Toci, G. and von der Gathen, P.

(2000)
Overview and results of THESEO 1998-1999 ,

Stratospheric Ozone 1999 : proceedings of the fifth European symposium 27 September - 1 October 1999, Saint Jean de Luz, France. European Commission Directorate-General for Research, Brussels, 33-49. (Air pollution research report ; 73) (EUR ; 19340) .

hdl:10013/epic.14991

Article

Engel, A. (2000)
The role of transparent exopolymer particles (TEP) in the increase in apparent particle stickiness (alpha) during the decline of a diatom bloom ,

Journal of Plankton Research, 22 , pp. 485-497 .

hdl:10013/epic.15278

Article

Engel, A. and Schartau, M. (1999)
Influence of transparent exopolymer particles (TEP) on sinking velocity of Nitzschia closterium aggregates ,

Marine Ecology Progress Series, 182 , pp. 69-76 .

hdl:10013/epic.15279

Article

Woyke, T. , Müller, R. , Stroh, F. , McKenna, D. S. , Engel, A. , Maritan, J. , Rex, M.

and Carslaw, K. S. (1999)
A test of our understanding of the ozone chemistry in the Arctic polar vortex based on in-situ measurements of ClO, BrO and O3, in the 1994/95 winter ,

Journal of Geophysical Research, 104 , pp. 18755-18768 .

hdl:10013/epic.14016

Book

Wirth, C. , Bruelheide, H. , Farwig, N. , Marx, J. , Settele, J. , Hodapp, D.

, Buschbaum, C. , Dutz, J. , Engel, A. , Eskildsen, K. , Hepach, H. , Hinkel, J. , Jacob, U. , Jansen, F. , Jürgens, K. , Karez, R. , Kleyer, M. , Krause, J. , Quaas, M. , Neumann, B. , Rick, J. J. , Riekhof, M. C. , Rohner, S. , Scheiffarth, G. , Sell, A. , Siebert, U. , von Weber, M. , Wiltshire, K. H. , Hillebrand, H. , Boersma, M. , Brinkhoff, T. , Eilers, S. , Engelen, B. , Goggina, M. , Hauck, J. , Karsten, U. , Kirstein, I. , Könneke, M. , Kröncke, I. , Marx, D. , Nachtsheim, D. , Niedringhaus, R. , Ristok, C. , Scheu, S. , Wiggering, B. and Zettler, M. (2024)
Faktencheck Artenvielfalt Bestandsaufnahme und Perspektiven für den Erhalt der biologischen Vielfalt in Deutschland - Küste und Küstengewässer / Settele, J. (editor) ,

oekom Verlag, 0 p., ISBN: 9783987260957 .

doi:10.14512/9783987263361 , hdl:10013/epic.59185066-db24-43fb-8b7a-5fc87ac4d723

[thumbnail of Faktencheck_Bericht2024.pdf]

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Inbook

Voß, M. , Baker, A. , Bange, H. , Conley, D. , Deutsch, B. , Engel, A. , Heiskanen, A. S. , Jickells, T. , Lancelot, C. , McQuatters-Gollop, A. , Middelburg, J. , Schiedek, D. and Slomp, C. (2011)
Nitrogen turnover processes and effects in coastal and marine ecosystems ,

ENA European Nitrogen Assessment. Sources, Effects and Policy Perspectives. Cambridge University Press. Mark Sutton et al. (editors).ISBN: 9781107006126 664 pages. .

hdl:10013/epic.37271

Inbook

LaRoche, J. , Rost, B.

and Engel, A. (2010)
Bioassays, batch culture and chemostat experimentation ,

Approaches and tools to manipulate the carbonate chemistry., Guide for Best Practices in Ocean Acidification Research and Data Reporting. In: Riebesell U., Fabry V. J., Hansson L., Gattuso J.-P. (Eds.), pp. .

hdl:10013/epic.35260

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Inbook

Engel, A. , Barcelos e Ramos, J. , Geider, R. , Hutchins, D. , Lee, C. , Rost, B.

, Röttgers, R. and Thingstad, F. (2010)
Production and export of organic matter ,

Guide for Best Practices in Ocean Acidification Research and Data Reporting. In: Riebesell U., Fabry V. J., Hansson L., Gattuso J.-P. (Eds.), pp. .

hdl:10013/epic.35258

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Inbook

Engel, A. (2009)
Determination of Marine Gel Particles ,

Practical guidelines for the analysis of seawater / ed. by Oliver Wurl Boca Raton [u.a.] ; CRC Press, ISBN: 978-1-420-07306-5 .

hdl:10013/epic.32844

Inbook

Lalande, C. , Xiao, X. , Oetjen, I. P. , Fernandez Mendez, M.

, David, C. , Flores, H. , Pinotek, J. , Galgani, L. , Noethig, E. M. , Niehoff, B. , Metfies, K. and Engel, A.
7. Plankton Ecology / Boetius, A. (editor) ,

Bremerhaven, Alfred-Wegener-Institut Helmholtz Zentrum für Polar- und Meeresforschung .

hdl:10013/epic.74138b70-c2ed-48cf-9c05-cc8c5129e3e5

[thumbnail of The Expedition of the Research Vessel Polarstern _7_plankton ecology chapter_2013.pdf]

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Thesis -PhD

Engel, A. (1998)
Bildung, Zusammensetzung und Sinkgeschwindigkeiten mariner Aggregate ,

PhD thesis, Christian-Albrechts Universität Kiel.

hdl:10013/epic.16010

Conference -Poster

Nöthig, E. M. , Bracher, A. , Engel, A. , Metfies, K. , Niehoff, B. , Peeken, I. , Cornils, A. , Hildebrandt, N. , Kraberg, A. , Lampe, V. , von Jackowski, A. and Xi, H. (2023)
Natural variability or consequences of climate change? - Inferences of plankton observations in the Fram Strait

hdl:10013/epic.efe4fb50-32be-488f-baa8-56d70cc519eb

Conference -Talk

Grosse, J.

, Nöthig, E. M.

and Engel, A.

(2021)
Distribution of amino acids and carbohydrates in different water masses in Fram Strait ,

Arctic Frontiers 2021, Tromsø-Online, 1 February 2021 - 4 February 2021 .

hdl:10013/epic.a5712dfb-ec6d-4a40-8cb9-5e48e89f16b4

Conference -Invited talk

Nöthig, E. M.

, Bauerfeind, E. , Bergmann, M.

, Bracher, A.

, Bienhold, C.

, Engel, A. , Fadeev, E.

, Fahl, K.

, Geibert, W.

, Hasemann, C. , Iversen, M.

, Jacob, M. , Lalande, C.

, Metfies, K.

, Salter, I.

, Peeken, I.

, Piontek, J. , Ramondenc, S. , Rapp, J. Z.

, Schewe, I.

, Wenzhöfer, F.

, Boetius, A.

and Soltwedel, T.

(2019)
Long-Term Summertime Investigations of Pelagic and Benthic Realms with Continuous Observations of Vertical Particle Flux in the Fram Strait and the Central Arctic Ocean ,

Goldschmidt Barcelona 2019, Barcelona, Spain, 18 August 2019 - 23 August 2019 .

hdl:10013/epic.b406523e-a4fd-424c-a487-9e57b6ec7140

[thumbnail of Noethig_et_al_2019_Goldschmidt.pdf]

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Conference -Poster

Fadeev, E.

, Salter, I.

, Bienhold, C.

, Engel, A. and Boetius, A.

(2017)
Pelagic bacterial communities across the Arctic-Atlantic boundary zone ,

SAME-15, Zagreb, Croatia, 4 September 2017 - 9 September 2017 .

hdl:10013/epic.51535

[thumbnail of SAME15_final_draft_3008.pdf]

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Conference -Talk

Metfies, K.

, Noethig, E. M.

, Bracher, A.

, Engel, A. , Niehoff, B. , Peeken, I.

, Bauerfeind, E. , Cherkasheva, A. , Gaebler-Schwarz, S. , Hardge, K. , Kilias, E. , Kraft, A. , Lalande, C. , Piontek, J. , Thomisch, K.

and Wurst, M. (2013)
Phytoplankton Ecology and Biogeochemistry in a Changing Arctic Ocean - Molecular Genetics meets Biological Oceanography ,

When Genetics Meets Oceanography, Observatoire Oceanologique Université Pierre et Marie Curie & Centre national de la recherche Scientifique, Banyuls sur Mer, France, 14 October 2013 - 16 October 2013 .

hdl:10013/epic.42553

Conference -Talk

Endres, S. , Flerus, R. , Galgani, L. , Roa, J. and Engel, A. (2013)
Organic matter turnover by pelagic microorganisms under the impact of ocean acidification ,

ASLO Aquatic Science Meeting, New Orleans, USA .

hdl:10013/epic.41989

Conference -Poster

Endres, S. , Galgani, L. and Engel, A. (2012)
Marine bacteria thrive when the ocean acidifies ,

International Symposium on Microbial Ecology 2012, Copenhagen, 19 August 2012 - 24 August 2012 .

hdl:10013/epic.40347

Conference -Talk

Endres, S. , Unger, J. , Wannicke, N. , Nausch, M. , Voss, M. and Engel, A. (2011)
Impact of ocean acidification on microbial degradation of organic matter ,

2nd annual BIOACID meeting, Universität Bremen, 26 September 2011 - 28 September 2011 .

hdl:10013/epic.38849

Conference -Talk

Wannicke, N. , Unger, J. , Endres, S. , Nausch, M. , Salka, I. , Engel, A. , Grossart, H. P. and Voss, M. (2011)
Oceans turning sour - will it directly affect growth and production of heterotrophic bacteria? - What we have learned so far from laboratory to mesocosm experiments ,

2nd annual BIOACID meeting, Universität Bremen, 26 September 2011 - 28 September 2011 .

hdl:10013/epic.38483

Conference -Talk

Endres, S. , Unger, J. , Wannicke, N. , Nausch, M. , Voss, M. and Engel, A. (2011)
Effect of ocean acidification on microbial degradation of organic matter derived from a Thalassiosira weissflogii chemostat culture ,

YOUMARES 2.0 - Ocean amidst science, innovation and society, Bremerhaven, 7 September 2011 - 9 September 2011 .

hdl:10013/epic.38850

Conference -Poster

Wurst, M. , Kilias, E. , Giebel, H. A. , Nöthig, E. M.

, Metfies, K.

and Engel, A. (2011)
Microbial activities, dynamics and diversity in a changing Arctic Ocean (Fram Strait) ,

The 12th Symposium on Aquatic Microbial Ecology, Rostock, Germany .

hdl:10013/epic.38847

Conference -Poster

Harlay, J. , Chou, L. , DeBodt, C. , vanOostende, N. , Piontek, J. , Engel, A. , Sabbe, K. , Groom, S. and Borges, A. V. (2011)
Biogeochemistry and carbon mass balance of a coccolithophore bloom in the northern Bay of Biscay (June 2006) ,

European Geosciences Union, General Assembly, 3.-8.4.2011, Vienna, Austria. .

hdl:10013/epic.37182

Conference -Invited talk

Engel, A. (2011)
Crossing borders: Dynamics of extracellular organic matter in marine systems ,

What is the sea surface microlayer? Towards a unified physical, chemical and biological definition of the air-ocean interface.COST Action 735 Meeting; Marine Biological Association of the United Kingdom, Plymouth,UK. .

hdl:10013/epic.36850

Conference -Talk

Endres, S. , Unger, J. , Wannicke, N. and Engel, A. (2011)
Effect of ocean acidification on microbial degradation of organic matter derived from a Thalassiosira weissflogii chemostat culture ,

Enzymes in the Environment: Activity, Ecology and Application. Bad Nauheim 17.-21.July 2011 .

hdl:10013/epic.37963

Conference -Poster

Engel, A. , Czerny, J. , Bellerby, R. , Boxhammer, T. , Engel, A. , Ludwig, A. , Nachtigall, K. , Nondal, G. , Silyakova, A. , Sswat, M. and Riebesell, U. (2011)
Element budgets in an Arctic mesocosm CO2 perturbation study ,

European Geosciences Union, General Assembly, 3.-8.4.2011, Vienna, Austria. .

hdl:10013/epic.37181

Conference -Talk

Wannicke, N. , Endres, S. , Unger, J. , Engel, A. , Grossart, H. P. , Nausch, M. and Voss, M. (2011)
Growth and production of Nodularia spumigena under elevated CO2 concentrations. ,

Aquatic Sciences Meeting, 13.-18.2.2011, San Juan, Puerto Rico. .

hdl:10013/epic.36931

Conference -Poster

Cisternas-Nuevo, C. , Lee, C. and Engel, A. (2011)
Measurements of proteinaceous and polysaccharide-rich particles produced by bubbling phytoplankton exduates ,

Aquatic Sciences Meeting, 13.-18.2.2011, San Juan, Puerto Rico. .

hdl:10013/epic.36932

Conference -Talk

Endres, S. , Unger, J. , Wannicke, N. , Nausch, M. , Voss, M. and Engel, A. (2011)
Microbial degradation of organic matter produced by Thalassiosira weissflogii during a combined chemostat and batch experiment under different pCO2 levels ,

SAME12 12th Symposium on Aquatic Microbial Ecology, Warnemünde/Rostock.8.-2.9.2011. .

hdl:10013/epic.37964

Conference -Talk

Schulz, K. , Bellerby, R. , Engel, A. , Gattuso, J. P. , Hessen, D. , Klavsen, S. , Krug, S. , Nondal, G. , Silyakova, A. , Sswat, M. and Riebesell, U. (2011)
Organic matter dynamics and CO2 responses of the 2010 Svalbard mesocosm experiment ,

European Geoscience Union, General Assembly, 3-8.April, Vienna, Austria. .

hdl:10013/epic.37180

Conference -Poster

Peeken, I.

, Nöthig, E. M.

, Bauerfeind, E. , Bracher, A.

, Cherkasheva, A. , Engel, A. , Gäbler-Schwarz, S. , Kilias, E. , Kraft, A. , Metfies, K.

, Niehoff, B. , Pfaff, S. and Wurst, M. (2011)
Plankton Ecology and Biogeochemistry in a Changing Arctic Ocean (PEBCAO), first results from the AWI HAUSGARTEN area (Fram Strait) ,

Arctic Frontiers Arctic Tipping Points. Tromsø, NorwayJanuary 2011. .

hdl:10013/epic.36723

Conference -Invited talk

Engel, A. , Borchard, C. , Bellerby, R. , Klavsen, S. , Piontek, J. , Riebesell, U. and Schulz, K. (2011)
Sensitivity of DOC production to pCO2 in arctic pelagic communities: Insights from the 2010 Svalbard mesocosm study ,

EPOCA Third Annual Meeting, Royal Academy of Belgium for Science and the Arts, BrusselsMay .

hdl:10013/epic.37519

Conference -Talk

Sommer, U. , Lewandowska, A. , Biermann, A. , Breithaupt, P. , Lengfellner, K. , Walther, K. , von Scheibner, M. , Wohlers, J. , Engel, A. , Jürgens, K. , Hoppe, H. G. , Riebesell, U. and Gaedke, U. (2010)
Climat Change effects on the plankton spring-bloom-Overview of the Kiel Mesocosm Cluster ,

Life in warming waters, AQUASHIFT final workshop, 4.-7.10.2010, University of Kiel, Germany. .

hdl:10013/epic.36273

Conference -Talk

Biermann, A. , Engel, A. , Sommer, U. and Riebesell, U. (2010)
Effect of a sunny week on the nutrient transfer in a marine plankton community ,

Life in warming waters, AQUASHIFT final workshop, 4.-7.10.2010, University of Kiel, Germany. .

hdl:10013/epic.36151

Conference -Poster

Endres, S. , Unger, J. , Wannicke, N. and Engel, A. (2010)
Effect of ocean acidification on production and decomposition of exudates - first results from a joint batch experiment ,

BIOACID / EPOCA / UKOARP Meeting Bremerhaven 27-30 Sept 2010. .

hdl:10013/epic.36168

Conference -Talk

Nausch, G. , Endres, S. , Engel, A. , Grossart, H. P. , Nausch, M. , Unger, J. , Voss, M. and Wannicke, N. (2010)
Effects of ocean acidification on the turnover of organic matter in pelagic ecosystems ,

BIOACID / EPOCA / UKOARP Meeting Bremerhaven 27-30 Sept 2010. .

hdl:10013/epic.36997

Conference -Talk

Piontek, J. , Händel, N. , Sperling, M. , Riebesell, U. and Engel, A. (2010)
Effects of rising seawater CO2 on the bacterial turnover of organic matter in temperate marine systems ,

13th ISME Symposium, Seattle. .

hdl:10013/epic.35849

Conference -Poster

Wurst, M. , Händel, N. , Nöthig, E. M.

, Bathmann, U. and Engel, A. (2010)
Effects of temperature and CO2 on organic matter production and aggregation in Arctic ecosystems ,

International Polar Year Oslo science conference, 8-12 June, Norway. .

hdl:10013/epic.35884

Conference -Poster

Wannicke, N. , Unger, J. , Endres, S. , Nausch, M. , Nausch, G. , Grossart, H. P. , Voss, M. and Engel, A. (2010)
Growth and production of Nodularia spumigena under different CO2 concentrations - First results from a joint laboratory study ,

BIOACID / EPOCA / UKOARP Meeting Bremerhaven 27-30 Sept 2010. .

hdl:10013/epic.36999

Conference -Poster

Wannicke, N. , Unger, J. , Endres, S. , Nausch, M. , Grossart, H. P. , Voss, M. and Engel, A. (2010)
How elevated pCO2 and DOM derived from Nodularia grown at different pCO2 level modify bacterial growth and activity - first results from a joint laboratory study ,

BIOACID / EPOCA / UKOARP Meeting Bremerhaven 27-30 Sept 2010. .

hdl:10013/epic.36998

Conference -Invited talk

Engel, A. (2010)
How will biogeochemical processes in the ocean respond to sea surface warming? ,

Darwin Days, Darwin Center for Biogeosciences, NH Koningshof, Veldhoven, Netherlands.4.2010. .

hdl:10013/epic.34876

Conference -Talk

Lunau, M. , Erickson, M. , Voß, M. , Ducklow, H. and Engel, A. (2010)
IMPACT OF UNBALANCED NITRATE INPUTS ON THE MICROBIAL TRANSFORMATION OF NITROGEN: A STABLE ISOTOPE AND SORTING FLOW CYTOMETRIC STUDY ,

ASLO Summer Meeting (with NABS), Santa Fe, NM,USA June .

hdl:10013/epic.35316

Conference -Invited talk

Engel, A. (2010)
Microbial Control of Dissolved Organic Matter in Changing Seas ,

Leibniz Institute of Marine Sciences (IFM-GEOMAR), Colloquium.5.2010. .

hdl:10013/epic.35234

Conference -Talk

Peeken, I.

, Nöthig, E. M.

, Bauerfeind, E. , Bracher, A.

, Engel, A. , Metfies, K.

, Niehoff, B. , Okolodkov, Y. , Gäbler-Schwarz, S. , Kilias, E. , Kuckero, L. , Schwarz, J. N. , Wurst, M. , Händel, N. , Lorenzen, C. and Murawski, S. (2010)
Plankton Ecology and Biogeochemistry in a Changing Arctic Ocean (PEBCAO) ,

International Polar Year Oslo science conference, 8-12 June, Norway. .

hdl:10013/epic.35862

Conference -Poster

Wurst, M. , Händel, N. , Nöthig, E. M.

and Engel, A. (2010)
Potential Effects of Sea Surface Warming and Acidification on the Aggregation of Extracellular Organic Matter in Arctic Ecosystems ,

Joint EPOCA, BIOACID and UKOARP meeting, 27 - 30 September, Bremerhaven, Germany. .

hdl:10013/epic.36152

Conference -Poster

Wurst, M. , Händel, N. , Nöthig, E. M.

and Engel, A. (2010)
Potential effects of sea surface warming and acidification on the aggregation of extracellular organic matter in Arctic ecosystems ,

13th International Symposium on Microbial Ecology, 22 - 27 August, Seattle, USA. .

hdl:10013/epic.35885

Conference -Talk

Harlay, J. , Borges, A. V. , Delille, B. , Suykens, K. , De Bodt, C. , Sabbe, K. , van Oostende, N. , Engel, A. , Piontek, J. and Chou, L. (2010)
Towards a comprehensive C-budgeting approach of a cocoliothophorid bloom in the northern Bay of Biscay: results from PEACE projec ,

XII International Symposium on Oceanography of the Bay of Biscay, 3-6-May, Brest, France. .

hdl:10013/epic.35277

Conference -Talk

Schartau, M. , Colijn, F. , Engel, A. , Gerdts, G.

, Metfies, K.

, Schlüter, M.

and Moll, A. (2010)
Towards an integrative approach in phytoplankton and microbial ecology. ,

ICES-WGPME Annual Meeting, Aberdeen, UK. .

hdl:10013/epic.34867

Conference -Invited talk

Engel, A. (2010)
Why marine organics matter when climate changes ,

University Hamburg, Colloquium. .

hdl:10013/epic.35263

Conference -Poster

Harlay, J. , Borges, A. V. , De Bodt, C. , Van Oostende, N. , Piontek, J. , Suykens, K. , Engel, A. , Sabbe, K. , Groom, S. and Chou, L. (2009)
Biogeochemistry and carbon budget during a coccolithophorid bloom in the northern Bay of Biscay (June 2006) ,

EGU General Assembly, Vienna, AustriaApril. .

hdl:10013/epic.32805

Conference -Poster

Händel, N. , Piontek, J. , Harlay, J. , de Bodt, C. , Chou, L. and Engel, A. (2009)
Dynamics of polysaccharides and transparent exopolymer particles during a coccolithophore bloom in the Bay of Biscay ,

ASLO, Aquatic Sciences Meeting 2009, Nice. .

hdl:10013/epic.31840

Conference -Poster

Biermann, A. and Engel, A. (2009)
Effect of CO2 on the properties and sinking velocity of aggregates of the coccolithophore Emiliania huxleyi. ,

ASLO Aquatic Sciences Meeting 2009, 25.-30. January, Nice, France. .

hdl:10013/epic.31816

Conference -Poster

Engel, A. (2009)
Effects of climate change on the emission of biogenic primary organic aerosols from marine systems ,

SOPRAN Annual Meeting 2009, IFM-GEOMAR, Kiel, Germany. .

hdl:10013/epic.32394

Conference -Talk

Biermann, A. , Engel, A. , Sommer, U. and Riebesell, U. (2009)
Effects of temperature and copepod density on the cycling of organic matter the 2009 Kiel mesocosm experiment ,

AQUASHIFT workshop September 7-9 .

hdl:10013/epic.33298

Conference -Talk

Peeken, I.

, Bracher, A.

, Engel, A. , Metfies, K.

, Niehoff, B. and Nöthig, E. M.

(2009)
Plankton ecology in a changing Arctic Ocean - Planned investigations within the new AWI research programme- ,

Workshop: Developing Long Term International Collaboration on Methane Hydrate Research and Monitoring in the Arctic Region, 18 - 20 February 2009, NIOZ (The Netherlands). .

hdl:10013/epic.32610

Conference -Poster

Engel, A. , Biermann, A. , Szlosek, J. , Abramson, L. and Lee, C. (2009)
Role of biogenic minerals in particle aggregation processes and potential sensitivities to ocean acidification ,

ASLO Aquatic Sciences Meeting 2009, 25.-30. January, Nice, France. .

hdl:10013/epic.31823

Conference -Poster

Chou, L. , Harlay, J. , De Bodt, C. , Roevros, N. , Borges, A. V. , Suykens, K. , Delille, B. , Sabbe, K. , Van Oostende, N. , Engel, A. , Piontek, J. , Borchard, C. , Händel, N. and Groom, S. (2009)
Role of pelagic calcification and export of carbonate production in climate change ,

SOLAS Open Science Conference, Barcelona .

hdl:10013/epic.34355

Conference -Invited talk

Engel, A. (2009)
Will the biological pump respond to ocean acidification? ,

Gordon Research Conferences; Chemical Oceanography; Process, Dynamics, and Change in the Anthropocene Ocean; 2.-7.8.2009, Tilton, NH, USA. .

hdl:10013/epic.33220

Conference -Talk

Borchard, C. , Händel, N. , Borges, A. V. and Engel, A. (2009)
A new chemostat system to investigate combined temperature and CO2 effects on marine phytoplankton species ,

ASLO, Aquatic Sciences Meeting 2009, Nice, France. .

hdl:10013/epic.31876

Conference -Poster

Piontek, J. , Händel, N. , Borchard, C. , Lunau, M. , Chou, L. and Engel, A. (2009)
The significance of bacterial polysaccharide degradation for carbon export, today and in the future ocean ,

ASLO Conference, NiceJanuary .

hdl:10013/epic.31903

Conference -Poster

Chou, L. , Harlay, J. , De Bodt, C. , Roevros, N. , Borges, A. V. , Suykens, K. , Delille, B. , Sabbe, K. , Van Oostende, N. , Engel, A. , Piontek, J. , Borchard, C. , Händel, N. , Schmidt, S. and Groom, S. (2008)
BIOGEOCHEMICAL INVESTIGATIONS OF COCCOLITHOPHORE BLOOMS ALONG THE CONTENTAL MARGIN OF THE NORTHERN BAY OF BISCAY: HIGHLIGHTS OF THE PEACE PROJECT ,

Second International Symposium on the Ocean in a High CO2 World, Monaco. .

hdl:10013/epic.31241

Conference -Talk

Chou, L. , Harlay, J. , De Bodt, C. , Roevros, N. , Borges, A. V. , Suykens, K. , Delille, B. , Sabbe, K. , Van Oostende, N. , Engel, A. , Piontek, J. , Händel, N. , Groom, S. and Schmidt, S. (2008)
Biogeochemistry of Coccolithophore Blooms along the Continental Margin of the Northern Bay of Biscay. ,

Eur-Oceans Final Meeting, RomeNovember 2008. .

hdl:10013/epic.32409

Conference -Talk

Van Oostende, N. , Vyverman, W. , Harlay, J. , De Bodt, C. , Chou, L. , Suykens, K. , Borges, A. V. , Piontek, J. , Engel, A. and Sabbe, K. (2008)
Coccolithophore bloom dynamics shape bacterioplankton communities in the northern Bay of Biscay. ,

The 12th International Symposium on Microbial Ecology (ISME 12), Cairns, AustraliaAugust 2008. .

hdl:10013/epic.32410

Conference -Poster

Wurst, M. , Voß, M. , Engel, A. , Grossart, H. P. , Riebesell, U. and Lunau, M. (2008)
Coupling of transparent exopolymer particle dynamics and microbiological processes during an acidification experiment in the Baltic Sea ,

SOPRAN Annual Meeting 2008, Warnemünde, Germany. .

hdl:10013/epic.30203

Conference -Talk

Wurst, M. , Voss, M. , Engel, A. , Grossart, H. P. , Riebesell, U. and Lunau, M. (2008)
Coupling of transparent exopolymer particle dynamics and microbiological processes during an ocean acidification experiment in the Baltic Sea ,

Ocean Science Meeting, March 2-7, 2008, Orlando, Florida. .

hdl:10013/epic.30200

Conference -Poster

Händel, N. , Piontek, J. , Wohlers, J. , Riebesell, U. and Engel, A. (2008)
Dynamics of dissolved neutral and acidic sugars in seawater ,

Ocean Science Meeting, March 2-7, 2008, Orlando, Florida.. .

hdl:10013/epic.30206

Conference -Poster

Engel, A. , Händel, N. , Grossart, H. P. , Wohlers, J. and Riebesell, U. (2008)
Effects of increasing temperature on the production and molecular composition of dissolved organic matter during an indoor-mesocosm experiment ,

DGL, Jahrestagung 2008, Konstanz. .

hdl:10013/epic.31239

Conference -Poster

Piontek, J. , Händel, N. , Lunau, M. , Borchard, C. and Engel, A. (2008)
Effects of ocean acidification on the bacterial degradation of organic matter ,

Second International Symposium on the ocean in a high-CO2 world, October 6-9, 2008, Monaco. .

hdl:10013/epic.31275

Conference -Talk

Piontek, J. , Borchard, C. , Händel, N. and Engel, A. (2008)
Effects of rising CO2 on microbial degradation of organic matter derived from coccolithophores ,

PEACE annual workshop, February 2008, Brussels. .

hdl:10013/epic.30157

Conference -Talk

Borchard, C. , Piontek, J. , Händel, N. and Engel, A. (2008)
Investigating the combined effect of pCO2 and temperature on Emiliania huxleyi using a chemostat system ,

PEACE annual workshop, February 2008, Brussels. .

hdl:10013/epic.30161

Conference -Invited talk

Engel, A. (2008)
Organic and export production, elemental ratios ,

Workshop on Best Practices for Ocean Acidification Research and Data Reporting, IFM-GEOMAR, Kiel, Germany.11.2008. .

hdl:10013/epic.31546

Conference -Talk

Szlosek, J. , Engel, A. , Armstrong, R. and Lee, C. (2008)
POTENTIAL EFFECTS OF CLIMATE CHANGE ON PARTICLE COAGULATION EFFICIENCY IN THE OCEAN ,

Ocean Sciences Meeting, March 3-7, Orlando, Florida, USA. .

hdl:10013/epic.30158

Conference -Poster

Lunau, M. , Wurst, M. , Piontek, J. , Grossart, H. P. , Riebesell, U. and Engel, A. (2008)
Potential effects of ocean acidification on microbial organic matter degradation during an offshore mesocosm experiment ,

Ocean Science Meeting, March 2-7, 2008, Orlando, Florida. .

hdl:10013/epic.30199

Conference -Poster

Lunau, M. , Wurst, M. , Piontek, J. , Grossart, H. P. , Riebesell, U. and Engel, A. (2008)
Potential effects of ocean acidification on microbial organic matter degradation during an offshore mesocosm experiment. ,

SOPRAN Annual Meeting 2008, Warnemünde, Germany. .

hdl:10013/epic.30202

Conference -Invited talk

Engel, A. (2008)
Reactivity and fate of organic matter in the ocean ,

IFM-GEOMAR, colloquium. .

hdl:10013/epic.30034

Conference -Invited talk

Engel, A. (2008)
Testing the effects of ocean acidification on marine plankton: What can we expect in the future? ,

SOMAS Special Seminar, Stony Brook University, Stony Brook, USA. .

hdl:10013/epic.30955

Conference -Talk

Schartau, M. , Engel, A. and Colijn, F. (2008)
Transformation of dissolved organic matter and its diverse effect on higher trophic level ,

2008 ICES Annual Science Conference. .

hdl:10013/epic.31456

Conference -Talk

Biermann, A. , Engel, A. , Sommer, U. and Riebesell, U. (2008)
The combined effect of temperature and light on the cycling of organic matter during a phytoplankton bloom- a mesocosm study ,

DGL, Jahrestagung 2008, Konstanz. .

hdl:10013/epic.31240

Conference -Talk

Wohlers, J. , Engel, A. , Zöllner, E. , Sommer, U. and Riebesell, U. (2008)
The impact of rising sea surface temperature on the cycling of organic matter : an indoor mesocosm study ,

Effects of Climate Change on the World's Oceans. International Symposium, Gijon, Spain, May 19-23 .

hdl:10013/epic.30587

Conference -Talk

Schartau, M. , Engel, A. , Piontek, J. and Rost, B.

(2007)
CO2 sensitivities: DOC production and acidification ,

Modelling the response of marine ecosystems to increasing levels of CO2. Modelling Workshop, 12-14 February 2007, Plymouth, U.K.. .

hdl:10013/epic.27876

Conference -Talk

Szlosek, J. , Engel, A. , Lee, C. and Armstrong, R. (2007)
COAGULATION EFFICIENCY OF PHYTOPLANKTON CELLS DURING DIFFERENT GROWTH STAGES AND ITS RELATIONSHIP TO EXOPOLYMER PARTICLE PROPERTIES ,

ASLO, Aquatic Sciences Meeting, Santa Fe, New Mexico .

hdl:10013/epic.26402

Conference -Talk

Sommer, U. , Aberle, N. , Breithaupt, P. , Engel, A. , Hoppe, H. G. , Jürgens, K. , Lengfellner, K. , Riebesell, U. , Walther, K. and Wohlers, J. (2007)
Climate change, seasonal plankton succession and mismatch in food chains ,

37th Annual Conference of the Ecological Society of Germany, Switzerland and Austria, Marburg.09.07. .

hdl:10013/epic.28011

Conference -Talk

Szlosek, J. , Engel, A. , Lee, C. and Armstrong, R. A. (2007)
Coagulation efficiency of phytoplankton cells during different growth stages and its relationship to exopolymer particle properties ,

ASLO Aquatic Science Meeting, Santa Fe, NM, USA. .

hdl:10013/epic.28465

Conference -Talk

Engel, A. , Bellerby, R. , Delille, B. , Schulz, K. , Riebesell, U. and Schartau, M. (2007)
Effect of CO2 concentration on suspended particle dynamics during a mesocosm bloom experiment (Peece II) ,

European Geosciences Union, General Assembly 2007, Vienna. .

hdl:10013/epic.26599

Conference -Poster

Biermann, A. and Engel, A. (2007)
Effect of CO2 on the properties and sinking velocity of aggregates of the coccolithophore Emiliania huxleyi ,

97th annual meeting GV, Bremen, Germany.. .

hdl:10013/epic.27878

Conference -Poster

Piontek, J. , Lunau, M. , Händel, N. , Jansen, S. , Neu, T. and Engel, A. (2007)
Effects of rising temperature and decreasing pH on degradation activity of marine bacterioplankton ,

10th Symposium on Aquatic Microbial Ecology, September 2-7 2007, Faro, Portugal. .

hdl:10013/epic.27689

Conference -Talk

Piontek, J. , Händel, N. and Engel, A. (2007)
Effects of rising temperature and pCO2 on bacterial degradation processes in marine systems ,

European Geosciences Union, General Assembly 2007, Vienna.-20.4.2007. .

hdl:10013/epic.26808

Conference -Talk

Piontek, J. , Händel, N. and Engel, A. (2007)
Effects of temperature on the microbial decomposition of particle aggregates in the ocean ,

42nd European Marine Biology Symposium, August 27-31 2007, Kiel, Germany. .

hdl:10013/epic.27690

Conference -Talk

Lunau, M. , Koch, S. , Piontek, J. , Händel, N. and Engel, A. (2007)
Investigating the effects of changes in CO2 concentration on marine plankton dynamics with batch and chemostat systems ,

42nd EMBS, August 27-31 2007, Kiel, Germany .

hdl:10013/epic.27651

Conference -Talk

Piontek, J. , Händel, N. , Lunau, M. and Engel, A. (2007)
Investigating the effects of changing CO2 concentration on a natural marine plankton community using a chemostat system ,

International Union of Geodesy and Geophysics, General Assembly, Perugia, July 2-13 .

hdl:10013/epic.26958

Conference -Talk

Passow, U. , De La Rocha, C. , Arnosti, C. , Grossart, H. P. , Murray, A. E. and Engel, A. (2007)
Overview of a mesocosm experiment investigating the impact of phytoplankton on the microbial loop ,

American Society of Limnology and Oceanography 2007: Aquatic Sciences Meeting: Water Rocks! Santa Fe, New Mexico. .

hdl:10013/epic.26309

Conference -Talk

Lunau, M. , Martens-Habbena, W. , Simon, M. , Engel, A. and Gasol, J. (2007)
Preservation of marine bacteria induces rapid changes of cellular nucleic acids ,

10th SAME, September 2-7 2007, Faro, Portugal. .

hdl:10013/epic.27653

Conference -Talk

Koch, S. , Händel, N. , Wirtz, K. and Engel, A. (2007)
Testing the effects of pCO2 on the coccolithophore Emiliania huxleyi during different growth stages ,

European Geosciences Union, General Assembly 2007, Vienna.-20.4.2007. .

hdl:10013/epic.26814

Conference -Talk

Wohlers, J. , Engel, A. , Sommer, U. , Zöllner, E. and Riebesell, U. (2007)
The effect of rising sea surface temperature on the concentration, composition and stoichiometry of dissolved organic matter ,

37th Annual Conference of the Ecological Society of Germany, Switzerland and Austria (GfÖ), Marburg, Germany. .

hdl:10013/epic.28148

Conference -Invited talk

Engel, A. (2006)
Biogeochemistry of marine particle dynamics and its sensitivity to global change ,

ICBM Colloquium, University of Oldenburg, Oldenburg, Germany. .

hdl:10013/epic.25485

Conference -Poster

Piontek, J. , Langer, G. , Händel, N. , Riebesell, U. , Wohlers, J. and Engel, A. (2006)
Effects of rising temperature on the decomposition of phytoplankton aggregates ,

3rd AQUASHIFT workshop, 14.-16.11.2006, Kiel. .

hdl:10013/epic.25955

Conference -Poster

Piontek, J. , Langer, G. , Händel, N. , Riebesell, U. and Engel, A. (2006)
Effects of rising temperature on the microbial decomposition of sinking organic material in the surface ocean ,

ESSP Global Change Open Science Conference, 9.-12.11.2006, Beijing, China. .

hdl:10013/epic.26013

Conference -Poster

Engel, A. , Szlosek, J. , Abramson, L. , Liu, Z. , Stewart, G. , Hirschberg, D. and Lee, C. (2006)
Importance of Calcareous Shells in Aggregate Formation and Particle Decomposition for the Coccolithophorid Emiliania Huxleyi ,

American Geophysical Union, Oceans Science Meeting 2006, Honolulu, Hawaii .

hdl:10013/epic.24958

Conference -Talk

Wohlers, J. , Engel, A. and Riebesell, U. (2006)
The impact of temperature on the temporal development of phytoplankton stoichiometry during a spring bloom ,

3rd AQUASHIFT workshop, 14.-16.11.2006, Kiel. .

hdl:10013/epic.25954

Conference -Invited talk

Engel, A. (2006)
The sensitivity of the Biologigal Pump to changing CO2 in the Ocean: What can we learn from present day experiments? ,

3rd Japanese-German Frontiers of Science Symposium, Alexander von Humboldt Foundation, Heidelberg, Germany. .

hdl:10013/epic.25926

Conference -Talk

Lee, C. , Armstrong, R. , Engel, A. , Xue, J. , Beck, A. , Liu, Z. , Cochran, K. , Peterson, M. , Wakeham, S. and Miquel, J. (2005)
PERSPECTIVES ON MECHANISMS DRIVING PARTCULATE ORGANIC CARBON (POC) FLUX: INSIGHTS FROM MEDFLUX ,

20-24 June 2005, Santiago de Compostela, Spain ASLO Summer Meeting. .

hdl:10013/epic.27623

Conference -Poster

Engel, A. , Langer, G. , Piontek, J. , Händel, N. and Szlosek, J. (2005)
Wie verändert sich die Biogeochemie des Ozeans im Anthropozaen? ,

Wissenswerte, 28.-30.11.2005, Bremen, Germany. .

hdl:10013/epic.24959

Conference -Poster

Benthien, A.

, Riebesell, U. , Engel, A. , Zondervan, I. , Hefter, J.

, Delille, B. , Harlay, J. and Jacquet, S. (2004)
Alkenone carbon isotopes during a bloom of Emiliania huxleyi: Effects of CO2 concentration and production. ,

8th International Conference on Paleoceanography (ICP VIII), 5-10 Sept., Biarritz, France .

hdl:10013/epic.22269

Conference -Invited talk

Engel, A. (2004)
From dissolved to particulate organic matter: How exopolymer aggregation affects the marine carbon cycle ,

OCEANS AND ATMOSPHERE COLLOQUIUM, Marine Science Research Center, Sate University of New York at Stony Brook, Stony Brook, USA. .

hdl:10013/epic.25486

Conference -Talk

Thoms, S. and Engel, A. (2004)
Modeling the formation of tramsparent exopolymer particles during a bloom of the coccolithophorid Emiliania huxleyi. ,

ASLO/TOS Ocean Research conference. February 2004, Honolulu, USA. .

hdl:10013/epic.25329

Conference -Poster

Riebesell, U. , Allgaier, M. , Avgoustidi, V. , Bellerby, R. , Carbonnel, V. , Chou, L. , Delille, B. , Egge, J. , Engel, A. , Grossart, H. P. , Huonnic, P. , Jansen, S. , Johannessen, T. , Joint, I. , Krigstad, S. , Lovdal, T. , Martin-Jézéquel, V. , Moros, C. , Mühling, M. , Nightingale, M. , Passow, U. , Rost, B.

, Schulz, K. , Skjelvan, I. , Terbrüggen, A. and Trimborn, S.

(2004)
Pelagic Ecosystems in a High CO2 Ocean: the Mesocosm Approach ,

Solas Open Science Conference 2004, 13.-16.October, Halifax, Nova Scotia, Canada. .

hdl:10013/epic.21850

Conference -Talk

Grossart, H. P. , Allgaier, M. , Passow, U. , Engel, A. , Schlulz, K. and Riebesell, U. (2004)
The effect of different CO2 concentrations on bacterial abundance and activity in the course of a diatom bloom ,

Abstract VAM, Braunschweig. .

hdl:10013/epic.20681

Conference -Poster

Benthien, A.

, Zondervan, I. , Riebesell, U. , Engel, A. , Hefter, J.

, Delille, B. , Harlay, J. and Jacquet, S. (2003)
Alkenone carbon isotopes during a bloom of Emiliania huxleyi: Effects of CO2 concentration and production. ,

EGS-AGU-EUG Joint Assembly, 7-11 April, Nice, France .

hdl:10013/epic.22280

Conference -Talk

Zondervan, I. , Aerts, K. , Bellerby, R. , Beaufort, L. , Benthien, A.

, Chou, L. , Delille, B. , Engel, A. , Gattuso, J. P. , Harlay, J. , Heemann, C. , Hoffmann, L. , Jacquet, S. , Nejstgaard, J. , Pizay, M. D. , Riebesell, U. , Rochelle-Newall, E. , Schneider, U. and Terbrüggen, A. (2003)
Biological responses to CO2-related changes in seawater carbonate chemistry during a bloom of Emiliania huxleyi ,

EGS-AGU-EUG Joint Assembly, 6-11 April, Nice, France. .

hdl:10013/epic.23417