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Number of items: 220.

Article in a Scientific Journal - peer-reviewed

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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 . ARt.Nr. 341. DOI 10.3389/fmars.2020.00341.

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Tovar-Sánchez, A., Rodríguez-Romero, A., Engel, A., Zäncker, B., Fu, F., Marañón, E., Pérez-Lorenzo, M., Bressac, M., Wagener, T., Triquet, S., Siour, G., Desboeufs, K. and Guieu, C. (2020) Characterizing the surface microlayer in the Mediterranean Sea: trace metal concentrations and microbial plankton abundance Biogeosciences, 17 (8). pp. 2349-2364. DOI 10.5194/bg-17-2349-2020.

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Stolle, C., Ribas-Ribas, M., Badewien, T. H., Barnes, J., Carpenter, L. J., Chance, R., Damgaard, L. R., Durán Quesada, A. M., Engel, A., Frka, S., Galgani, L., Gašparović, B., Gerriets, M., Mustaffa, N. I. H., Herrmann, H., Kallajoki, L., Pereira, R., Radach, F., Revsbech, N. P., Rickard, P., Saint, A., Salter, M., Striebel, M., Triesch, N., Uher, G., Upstill-Goddard, R. C., van Pinxteren, M., Zäncker, B., Zieger, P. and Wurl, O. (2020) The MILAN campaign: Studying diel light effects on the air-sea interface Bulletin of the American Meteorological Society, 101 (2). pp. 146-166. DOI 10.1175/BAMS-D-17-0329.1.

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Maßmig, M., Lüdke, J., Krahmann, G. and Engel, A. (2020) Bacterial degradation activity in the eastern tropical South Pacific oxygen minimum zone Biogeosciences (BG), 17 . pp. 215-230. DOI 10.5194/bg-17-215-2020.

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Laurenceau‐Cornec, E. C., Le Moigne, F. A. C., Gallinari, M., Moriceau, B., Toullec, J., Iversen, M. H., Engel, A. and De La Rocha, C. L. (2019) New guidelines for the application of Stokes' models to the sinking velocity of marine aggregates Limnology and Oceanography . DOI 10.1002/lno.11388.

Browning, T. J., Al-Hashem, A. A., Hopwood, M. J., Engel, A., Wakefield, E. D. and Achterberg, E. P. (2019) Nutrient regulation of late spring phytoplankton blooms in the midlatitude North Atlantic Limnology and Oceanography . DOI 10.1002/lno.11376.

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Zäncker, B., Engel, A. and Cunliffe, M. (2019) Bacterial communities associated with individual transparent exopolymer particles (TEP) Journal of Plankton Research, 41 (4). pp. 561-565. DOI 10.1093/plankt/fbz022.

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Piontek, J., Endres, S., Le Moigne, F. A. C., Schartau, M. and Engel, A. (2019) Relevance of Nutrient-Limited Phytoplankton Production and Its Bacterial Remineralization for Carbon and Oxygen Fluxes in the Baltic Sea Frontiers in Marine Science, 6 . Art.Nr. 581. DOI 10.3389/fmars.2019.00581.

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Maßmig, M., Piontek, J., Le Moigne, F. A. C., Cisternas-Novoa, C. and Engel, A. (2019) Potential role of oxygen and inorganic nutrients on microbial carbon turnover in the Baltic Sea Aquatic Microbial Ecology, 83 . pp. 95-108. DOI 10.3354/ame01902.

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Loginova, A. N., Thomsen, S., Dengler, M., Lüdke, J. and Engel, A. (2019) Diapycnal dissolved organic matter supply into the upper Peruvian oxycline Biogeosciences (BG), 16 (9). pp. 2033-2047. DOI 10.5194/bg-16-2033-2019.

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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, 6 . Art.Nr. 187. DOI 10.3389/fmars.2019.00187.

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Thomsen, S., Karstensen, J., Kiko, R., Krahmann, G., Dengler, M. and Engel, A. (2019) Remote and local drivers of oxygen and nitrate variability in the shallow oxygen minimum zone off Mauritania in June 2014 Biogeosciences (BG), 16 (5). pp. 979-998. DOI 10.5194/bg-16-979-2019.

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Cisternas-Novoa, C., Lee, C., Tang, T., de Jesus, R. and Engel, A. (2019) Effects of Higher CO2 and Temperature on Exopolymer Particle Content and Physical Properties of Marine Aggregates Frontiers in Marine Science, 5 . Art.Nr. 500. DOI 10.3389/fmars.2018.00500.

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Fadeev, E., Salter, I., Schourup-Kristensen, V., Nöthig, E. M., Metfies, K., 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, 5 . Art.Nr. 429. DOI 10.3389/fmars.2018.00429.

Zäncker, B., Cunliffe, M. and Engel, A. (2018) Bacterial Community Composition in the Sea Surface Microlayer Off the Peruvian Coast Frontiers in Microbiology, 9 . Art.Nr. 2699. DOI 10.3389/fmicb.2018.02699.

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Galgani, L., Engel, A., Rossi, C., Donati, A. and Loiselle, S. A. (2018) Polystyrene microplastics increase microbial release of marine Chromophoric Dissolved Organic Matter in microcosm experiments Scientific Reports, 8 (1). Art.Nr. 14635. DOI 10.1038/s41598-018-32805-4.

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Michels, J., Stippkugel, A., Lenz, M., Wirtz, K. and Engel, A. (2018) Rapid aggregation of biofilm-covered microplastics with marine biogenic particles Proceedings of the Royal Society B: Biological Sciences, 285 (1885). p. 20181203. DOI 10.1098/rspb.2018.1203.

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Engel, A., Sperling, M., Sun, C., Grosse, J. and Friedrichs, G. (2018) Organic Matter in the Surface Microlayer: Insights From a Wind Wave Channel Experiment Frontiers in Marine Science, 5 . Art.Nr. 182. DOI 10.3389/fmars.2018.00182.

Browning, T. J., Achterberg, E. P., Rapp, I., Engel, A., Bertrand, E. M., Tagliabue, A. and Moore, C. M. (2017) Nutrient co-limitation at the boundary of an oceanic gyre Nature, 551 (7679). pp. 242-246. DOI 10.1038/nature24063.

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Dreshchinskii, A. and Engel, A. (2017) Seasonal variations of the sea surface microlayer at the Boknis Eck Times Series Station (Baltic Sea) Journal of Plankton Research, 39 (6). pp. 943-961. DOI 10.1093/plankt/fbx055.

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Engel, A., Piontek, J., Metfies, K., Endres, S., Sprong, P., 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 (1). Art.Nr. 4129. DOI 10.1038/s41598-017-04106-9.

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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 (Art.No. 166). DOI 10.3389/fmars.2017.00166.

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Engel, A., Bange, H. W., Cunliffe, M., Burrows, S. M., Friedrichs, G., Galgani, L., Herrmann, H., Hertkorn, N., Johnson, M., Liss, P. S., Quinn, P. K., Schartau, M., Soloviev, A., Stolle, C., Upstill-Goddard, R. C., van Pinxteren, M. and Zäncker, B. (2017) The Ocean's Vital Skin: Toward an Integrated Understanding of the Sea Surface Microlayer Frontiers in Marine Science, 4 . Art.Nr. 165. DOI 10.3389/fmars.2017.00165.

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Browning, T., Achterberg, E. P., Yong, J. C., Rapp, I., Utermann, C., Engel, A. and Moore, C. M. (2017) Iron limitation of microbial phosphorus acquisition in the tropical North Atlantic Nature Communications, 8 (15465). DOI 10.1038/ncomms15465.

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Engel, A., Wagner, H., Le Moigne, F. A. C. and Wilson, S. T. (2017) Particle export fluxes to the oxygen minimum zone of the Eastern Tropical North Atlantic Biogeosciences (BG), 14 (7). pp. 1825-1838. DOI 10.5194/bg-14-1825-2017.

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Schulz, K. G., Bach, L. T., Bellerby, R. G. J., Bermudez, R., Büdenbender, J., Boxhammer, T., Czerny, J., Engel, A., Ludwig, A., Meyerhöfer, M., Larsen, A., Paul, A. J., Sswat, M. and Riebesell, U. (2017) Phytoplankton Blooms at Increasing Levels of Atmospheric Carbon Dioxide: Experimental Evidence for Negative Effects on Prymnesiophytes and Positive on Small Picoeukaryotes Frontiers in Marine Science, 4 . Art.Nr. 64. DOI 10.3389/fmars.2017.00064.

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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, 8 . Art.Nr. 65. DOI 10.3389/fmicb.2017.00065.

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Le Moigne, F. A. C., Cisternas-Novoa, C., Piontek, J., Massmig, M. and Engel, A. (2017) On the effect of low oxygen concentrations on bacterial degradation of sinking particles Scientific Reports, 7 (1). Art. No. 16722. DOI 10.1038/s41598-017-16903-3.

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Bergen, B., Endres, S., Engel, A., Zark, M., Dittmar, T., Sommer, U. and Jürgens, K. (2016) Acidification and warming affect prominent bacteria in two seasonal phytoplankton bloom mesocosms Environmental Microbiology, 18 (12). pp. 4579-4595. DOI 10.1111/1462-2920.13549.

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Loginova, A. N., Thomsen, S. and Engel, A. (2016) Chromophoric and fluorescent dissolved organic matter in and above the oxygen minimum zone off Peru Journal of Geophysical Research: Oceans, 121 (11). pp. 7973-7990. DOI 10.1002/2016JC011906.

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Hepach, H., Quack, B., Tegtmeier, S., Engel, A., Bracher, A., Fuhlbrügge, S., Galgani, L., Atlas, E., 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.

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Thomsen, S., Kanzow, T., Colas, F., Echevin, V., Krahmann, G. and Engel, A. (2016) Do submesoscale frontal processes ventilate the oxygen minimum zone off Peru? Geophysical Research Letters, 43 (15). S367-S386. DOI 10.1002/2016GL070548.

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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 (Article nr. 29465). DOI 10.1038/srep29465.

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Löscher, C., Bange, H. W., Schmitz, R. A., Callbeck, C. M., Engel, A., Hauss, H., Kanzow, T., Kiko, R., Lavik, G., Loginova, A. N., 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 (BG), 13 . pp. 3585-3606. DOI 10.5194/bg-13-3585-2016.

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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 (23349). DOI 10.3402/polar.v34.23349.

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Loginova, A. N., Borchard, C., Meyer, J., Hauss, H., Kiko, R. and Engel, A. (2015) Effects of nitrate and phosphate supply on chromophoric and fluorescent dissolved organic matter in the Eastern Tropical North Atlantic: a mesocosm study Biogeosciences (BG), 12 . pp. 6897-6914. DOI 10.5194/bg-12-6897-2015.

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Engel, A., Borchard, C., Loginova, A. N., Meyer, J., Hauss, H. and Kiko, R. (2015) Effects of varied nitrate and phosphate supply on polysaccharidic and proteinaceous gel particles production during tropical phytoplankton bloom experiments Biogeosciences (BG), 12 . pp. 5647-5665. DOI 10.5194/bg-12-5647-2015.

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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.

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Kreus, M., Schartau, M., Engel, A., Nausch, M. and Voss, M. (2015) Variations in the elemental ratio of organic matter in the central Baltic Sea: Part I—Linking primary production to remineralization Continental Shelf Research, 100 . pp. 25-45. DOI 10.1016/j.csr.2014.06.015.

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Biermann, A., Lewandowska, A. M., Engel, A. and Riebesell, U. (2015) Organic matter partitioning and stoichiometry in response to rising water temperature and copepod grazing Marine Ecology Progress Series, 522 . pp. 49-65. DOI 10.3354/meps11148.

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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. DOI 10.1002/2014JC010188.

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Cisternas-Novoa, C., Lee, C. and Engel, A. (2014) A semi-quantitative spectrophotometric, dye-binding assay for determination of Coomassie Blue stainable particles Limnology and Oceanography: Methods, 12 . pp. 604-616. DOI 10.4319/lom.2014.12.604.

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Engel, A., Cisternas 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. DOI 10.3354/meps10824.

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Pavlov, A. K., Silyakova, A., Granskog, M. A., Bellerby, R. G. J., Engel, A., Schulz, K. G. and Brussaard, C. P. D. (2014) Marine CDOM accumulation during a coastal Arctic mesocosm experiment: No response to elevated pCO2levels Journal of Geophysical Research: Biogeosciences, 119 (6). pp. 1216-1230. DOI 10.1002/2013JG002587.

Endres, S., Galgani, L., Riebesell, U., Schulz, K. G. and Engel, A. (2014) Stimulated Bacterial Growth under Elevated p Co2: Results from an Off-Shore Mesocosm Study PLoS ONE, 9 (6). e99228. DOI 10.1371/journal.pone.0099228.

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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. DOI 10.1093/plankt/fbt125.

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Krause, S., Aloisi, G., Engel, A., Liebetrau, V. and Treude, T. (2014) Enhanced calcite dissolution in the presence of the Aerobic Methanotroph Methylosinus trichosporium Geomicrobiology Journal, 31 (4). pp. 325-337. DOI 10.1080/01490451.2013.834007.

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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.

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Biermann, A., Engel, A. and Riebesell, U. (2014) Changes in organic matter cycling in a plankton community exposed to warming under different light intensities Journal of Plankton Research, 36 (3). pp. 658-671. DOI 10.1093/plankt/fbu005.

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Engel, A., Borchard, C., Piontek, J., Schulz, K. G., Riebesell, U. and Bellerby, R. (2013) CO2 increases 14C-primary production in an Arctic plankton community Biogeosciences (BG), 10 (3). pp. 1291-1308. DOI 10.5194/bg-10-1291-2013.

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Archer, S. D., Kimmance, S. A., Stephens, J. A., Hopkins, F. E., Bellerby, R. G. J., Schulz, K. G., Piontek, J. and Engel, A. (2013) Contrasting responses of DMS and DMSP to ocean acidification in Arctic waters Biogeosciences (BG), 10 . pp. 1893-1908. DOI 10.5194/bg-10-1893-2013.

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Sperling, M., Piontek, J., Gerdts, G., Wichels, A., Schunck, H., Roy, A. S., LaRoche, J., Gilbert, 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 (BG), 10 . pp. 181-191. DOI 10.5194/bg-10-181-2013.

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Assmy, P., Ehn, J. K., Fernández-Méndez, 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.

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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 (BG), 10 (5). pp. 3109-3125. DOI 10.5194/bg-10-3109-2013.

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Silyakova, A., Bellerby, R. G. J., Schulz, K. G., Czerny, J., Tanaka, T., Nondal, G., Riebesell, U., Engel, A., De Lange, T. and Ludwig, A. (2013) Pelagic community production and carbon-nutrient stoichiometry under variable ocean acidification in an Arctic fjord Biogeosciences (BG), 10 . pp. 4847-4859. DOI 10.5194/bg-10-4847-2013.

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Unger, J., Endres, S., Wannicke, N., Engel, A., Voss, M., Nausch, G. and Nausch, M. (2013) Response of Nodularia spumigena to pCO2 - Part 3: Turnover of phosphorus compounds Biogeosciences (BG), 10 . pp. 1483-1499. DOI 10.5194/bg-10-1483-2013.

Endres, S., Unger, J., Wannicke, N., Nausch, M., Voss, M. and Engel, A. (2013) Response of Nodularia spumigena to pCO2 – Part 2: Exudation and extracellular enzyme activities Biogeosciences (BG), 10 . pp. 567-582. DOI 10.5194/bg-10-567-2013.

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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 perturbation study Biogeosciences (BG), 10 . pp. 297-314. DOI 10.5194/bg-10-297-2013.

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Cunliffe, M., Engel, A., Frka, S., Gašparović, B., Guitart, C., Murrell, J. C., Salter, M., Stolle, C., Upstill-Goddard, R. and Wurl, O. (2013) Sea surface microlayers: A unified physicochemical and biological perspective of the air–ocean interface Progress in Oceanography, 109 . pp. 104-116. DOI 10.1016/j.pocean.2012.08.004.

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Schulz, K. G., Bellerby, R. G. J., Brussaard, C. P. D., Büdenbender, J., Czerny, J., Engel, A., Fischer, M., Koch-Klavsen, S., Krug, S., Lischka, S., Ludwig, A., Meyerhöfer, M., Nondal, G., Silyakova, A., Stuhr, A. and Riebesell, U. (2013) Temporal biomass dynamics of an Arctic plankton bloom in response to increasing levels of atmospheric carbon dioxide Biogeosciences (BG), 10 . pp. 161-180. DOI 10.5194/bg-10-161-2013.

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Wohlers-Zöllner, J., Biermann, A., Engel, A., Dörge, P., Lewandowska, A. M., Scheibner, M. and Riebesell, U. (2012) Effects of rising temperature on pelagic biogeochemistry in mesocosm systems: a comparative analysis of the AQUASHIFT Kiel experiments Marine Biology, 159 . pp. 2503-2518. DOI 10.1007/s00227-012-1958-x.

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Borchard, C. and Engel, A. (2012) Organic matter exudation by Emiliania huxleyi under simulated future ocean conditions Biogeosciences (BG), 9 (8). pp. 3405-3423. DOI 10.5194/bg-9-3405-2012.

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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 (BG), 9 (8). pp. 2973-2988. DOI 10.5194/bg-9-2973-2012.

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Borchard, C., Borges, A., Händel, N. and Engel, A. (2011) Biogeochemical response of Emiliania huxleyi (PML B92/11) to elevated CO2 and temperature under phosphorous limitation: a chemostat study Journal of Experimental Marine Biology and Ecology, 410 . pp. 61-71. DOI 10.1016/j.jembe.2011.10.004.

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Engel, A., Händel, N., Wohlers, J., Lunau, M., Grossart, H. P., Sommer, U. and Riebesell, U. (2011) 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, 33 (3). pp. 357-372. DOI 10.1093/plankt/fbq122.

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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 Proceedings of the National Academy of Sciences of the United States of America, 106 (17). pp. 7067-7072. DOI 10.1073/pnas.0812743106.

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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.

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Egge, J., Thingstad, T., Larsen, A., Engel, A., Wohlers, J., Bellerby, R. G. J. and Riebesell, U. (2009) Primary production during nutrient-induced blooms at elevated CO2 concentrations Biogeosciences (BG), 6 . pp. 877-885.

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Riebesell, U., Bellerby, R., 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 (1466b). DOI 10.1126/science.1161096.

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Engel, A., Schulz, K. G., Riebesell, U., Bellerby, R. G. J., Delille, B. and Schartau, M. (2008) Effects of CO2 on particle size distribution and phytoplankton abundance during a mesocosm bloom experiment (PeECE II) Biogeosciences (BG), 5 (2). pp. 509-521. DOI 10.5194/bg-5-509-2008.

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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 . pp. 1528-1541. DOI 10.1016/j.gca.2006.12.015.

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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 (BG), 4 (4). pp. 433-454. DOI 10.5194/bg-4-433-2007.

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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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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 . pp. 929-932. DOI 10.1038/nature02453.

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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 (1). pp. 93-104. DOI 10.3354/ame034093.

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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 . pp. 729-741. DOI 10.1006/ecss.2001.0927.

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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. DOI 10.3354/meps219001.

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Engel, A. and Schartau, M. (1999) Influence of transparent expolymer particles (TEP) on sinking velocity of Nitzschia closterum aggregates Marine Ecology Progress Series, 182 . pp. 69-76. DOI 10.3354/meps182069.

Article in a Scientific Journal - without review

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Loginova, A. N., Dale, A. W., Le Moigne, F. A. C., Thomsen, S., Sommer, S., Wallmann, K. and Engel, A. (2020) Sediment release of dissolved organic matter to the oxygen minimum zone off Peru Biogeosciences Discussions . DOI 10.5194/bg-2019-489.

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Galgani, L. and Engel, A. (2012) The ocean has a gel-like skin made of proteins SOLAS News, 14 . pp. 7-8.

Book chapter

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Niehoff, B., Bauerfeind, E., Knüppel, N., Wiegmann, S., Busch, K., Endres, S., Ramirez Perez, M., Weinisch, L., Bracher, A., Metfies, K., Nöthig, E. M., Peeken, I., Engel, A. and Stoeck, T. (2015) Plankton Ecology and Biogeochemistry in a Changing Arctic Ocean (PEBCAO) The Expedition PS93.2 of the Research Vessel POLARSTERN to the Fram Strait in 2015. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 693 . Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany, pp. 38-42. DOI 10.2312/BzPM_0693_2015.

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Engel, A., Laß, K., Wurl, O. and Latif, M. T. (2014) Descriptive indicators for surface conditions Guide to best practices to study the ocean's surface. Occasional Publications of the Marine Biological Association of the United Kingdom . Marine Biological Association of the United Kingdom, Plymouth, UK, pp. 96-101.

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Lalande, C., Xiao, X., Oetjen, K., Peeken, I., Fernandez-Mendez, M., David, C., Flores, H., Piontek, J., Galgani, L., Nöthig, E., Niehoff, B., Metfies, K. and Engel, A. (2013) Plankton Ecology The Expedition of the Research Vessel "Polarstern" to the Arctic in 2012 (ARK XXVII/3). Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 663 . Alfred-Wegener-Institut Helmholtz-Zentrum für Polarund Meeresforschung, Bremerhaven, Germany, pp. 47-51.


Galgani, L., Roa, J. and Engel, A. (2013) Sea-surface microlayer Surface Ocean – Lower Atmosphere Study (SOLAS) in the upwelling region off Peru - Cruise No. M91 – December 01 – December 26, 2012 – Callao (Peru) – Callao (Peru). Meteor-Berichte, M91 . DFG Senatskommision für Ozeanographie, Bremen, Germany, pp. 36-37. DOI 10.2312/cr_m91.

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Voß, M., Baker, A., Bange, H. W., 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 processes in coastal and marine ecosystems The European Nitrogen Assessment: Sources, Effects and Policy Perspectives. Cambridge University Press, New York, USA, pp. 147-176. ISBN 978-1-107-00612-6


LaRoche, J., Rost, B. and Engel, A. (2010) Bioassays, batch culture and chemostat experimentation, Approaches and tools to manipulate the carbonate chemistry Guide to Best Practices for Ocean Acidification Research and Data Reporting. Publications Office of the European Union, Luxembourg, pp. 81-94.

Conference paper

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Endres, S., Hepach, H., Marandino, C., Quack, B. and Engel, A. (2015) Mikrobielle Kontrolle organischer Bromverbindungen im oberen Ozean [Paper] In: Statusseminar Meeresforschung mit FS SONNE 2015, 12.-13.02.2015, Bremen.

Conference presentation


Engel, A. (2019) Colloidal OM and marine gels from the microlayer to the deep sea [Invited talk] In: HWK Workshop-Marine Organic Biogeochemistry, 27.-30.04.2019, Delmenhorst, Germany.


Engel, A. (2019) Marvelous Marine Microgels [Talk] In: ASU School of Life Sciences Seminar, Arizona State University, 11.10.2019, Tempe, USA.

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Loginova, A. N., Dale, A. W., Le Moigne, F. A. C., Thomsen, S., Sommer, S., Wallmann, K. J. G. and Engel, A. (2019) Sediment release of dissolved organic matter in the oxygen minimum zone off Peru [Talk] In: EGU General Assembly 2019, 08.-13.04.2019, Vienna, Austria.


Engel, A. (2017) Supply of organic matter to oxygen minimum zones in eastern boundary upwelling systems [Invited talk] In: 3. Xiamen Symposium on Marine Environmental Sciences, 09.-11-01.2017, Xiamen, China.


Engel, A. (2017) The organic matter composition of the sea surface microlayer in response to increasing wind speed and potential implications for air-sea exchange processes [Invited talk] In: New Frontiers in Ocean-Atmosphere Exchange, 14.-19.05.2017, Cargese, France.


Bergen, B., Endres, S., Engel, A., Sommer, U. and Jürgens, K. (2015) Effect of acidification and warming on planktonic bacterial communities during two seasonal phytoplankton bloom mesocosms [Talk] In: ASLO Aquatic Sciences Meeting 2015, 22.-27.02.2015, Granada, Spain.

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Hepach, H., Quack, B., Fuhlbruegge, S., Raimund, S., Atlas, E. L., Engel, A., Bracher, A., Flöter, S. and Krüger, K. (2015) Halocarbons from the Peruvian upwelling system [Talk] In: SOPRAN Annual Meeting 2015, 17.-18.03.2015, Mainz, Germany.


Engel, A. (2015) Impacts of anthropogenic perturbations on organic matter cycling in the surface ocean [Invited talk] In: Marine research and management, 06.06.2015, University of Latvia, Riga, Lativa.


Engel, A., Sun, C. and Sperling, M. (2015) Influence of wind speed on the accumulation of organic matter in the surface microlayer during the Aeolotron experiment (2014) [Invited talk] In: The Ocean Surface Microlayer and Biogeochemical Feedbacks in the Earth System workshop, Ocean Interfaces semester topic Future Ocean, 01.-03.07.2015, Kiel, Germany.


Endres, S., Unger, J., Wannicke, N., Nausch, M., Voss, M. and Engel, A. (2015) Response of the filamentous cyanobacterium Nodularia spumigena to pCO2 - Exudation and extracellular enzymes [Talk] In: International Workshop „Marine research and management“, 12.06.2015, University of Riga, Latvia.


Cisternas-Novoa, C., Lee, C. and Engel, A. (2015) Transparent exopolymer particles (TEP) and coomassie stainable particles (CSP): comparing their origin and behavior using flowcam visualization and imaging [Talk] In: ASLO Aquatic Sciences Meeting 2015, 22.-27.02.2015, Granada, Spain.

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Endres, S., Galgani, L., Riebesell, U., Schulz, K. G. and Engel, A. (2014) Do bacteria thrive when the ocean acidifies? Results from an off-­shore mesocosm study [Talk] In: IMBER Open Science Conference FUTURE OCEAN, 23.-27.06.2014, Bergen, Norway.


Engel, A. (2014) Dynamics of extracellular organic matter in a changing ocean [Invited talk] In: SOLAS Symposium Day on Biological, Chemical and Physical processes at the ocean-atmosphere interface, 19.06.2014, Weizmann Institute of Science, Rehovot, Israel.


Galgani, L., Piontek, J. and Engel, A. (2014) The Gel-like nature of the sea-surface microlayer during the 2012 arctic sea-ice minimum [Talk] In: Ocean Sciences Meeting 2014, 23.-28.02.2014, Honululu, Hawaii, USA.


Engel, A. (2014) Pelagic ecosystems in a high CO2 world: Can we predict what the future may bring? [Invited talk] In: Swedish Marine Sciences Conference, 10.-12.11.2014, Umea, Sweden.


Engel, A. (2014) Rückkopplungsprozesse zwischen Ozean und Atmosphäre in Zeiten des Klimawandels [Invited talk] In: Naturwissenschaftlicher Verein Schleswig-Holsteins, 19.02.2014, Kiel, Germany.


Endres, S., Galgani, L., Riebesell, U., Schulz, K. G. and Engel, A. (2014) Stimulated Bacterial Growth under Elevated pCO2: Results from an Off-Shore Mesocosm Study [Talk] In: BIOACID Annual Meeting 2014, 10-11.09.2014, Kiel, Germany.


Engel, A. (2014) The marine surface microlayer: A unique link between the ocean and the atmosphere [Invited talk] In: International SCOR Sea Surface Microlayer (SML) Working Group Workshop, 12.-18.10.2014, Qingdao, China.


Engel, A. (2013) Dynamics of extracellular organic matter in a changing ocean [Invited talk] In: ZMT-Kolloquium, 06.03.2013, Bremen, Germany.


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 [Talk] In: When Genetics Meets Oceanography, Observatoire Oceanologique Université Pierre et Marie Curie & Centre national de la recherche Scientifique, 14.-16.10.2013, Banyuls sur Mer, France.


Engel, A., Borchard, C., Piontek, J., Sperling, M., Riebesell, U., Schulz, K. G. and Bellerby, R. (2013) Responses of marine microorganisms to ocean acidification during a mesocosm study in the Arctic (Svalbard) [Talk] In: EGU General Assembly 2013, 07.-12.04.2013, Vienna, Austria.


Engel, A. (2012) Biological processes responsible for gel precursor production [Invited talk] In: SOLAS-IGAC Workshop: Marine gels and their impact on atmospheric aerosol and cloud, 12.-14.10.2012, Kiel, Germany.


Engel, A., Szlosek-Chow, J., Biermann, A. and Lee, C. (2012) The role of calcification and transparent exopolymer particles on aggregate formation of Emiliania huxleyi [Invited talk] In: 2. International Workshop on Marine Aggregates from Molecular Principles to Biogeochemical Impacts, 15.-17.08.2012, Bremen, Germany.


Galgani, L., Endres, S. and Engel, A. (2011) The C-cycle on ocean’s surface. Insights to the composition of the sea surface microlayer [Talk] In: SOPRAN Annual Meeting 2011, 22.-23.03.2011, Heidelberg, Germany.


Engel, A. (2011) Crossing borders: Dynamics of extracellular organic matter in marine systems [Invited talk] In: COST Action 735 Meeting: Sub-WG 2&3 meeting 'What is the sea surface microlayer? Towards a unified physical, chemical and biological definition of the air-ocean interface', 25.-26.01.2011, Plymouth, UK.


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 [Talk] In: 4. International conference Enzymes in the Environment: Activity, Ecology and Application, 17.-21.07.2011, Bad Nauheim, Germany.


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 [Talk] In: SAME12 - 12. Symposium on Aquatic Microbial Ecology, 28.08.-02.09.2011, Rostock/Warnemünde, Germany.


Kanzow, T. and Engel, A. (2011) Near-coastal supply of oxygen and dissolved organic matter to the oxygen minimum zone [Talk] In: SFB754 Retreat Climate-biogeochemistry interactions in the tropical ocean, 22.02.2011, Lübeck, Germany.


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 [Talk] In: EGU General Assembly 2011, 03.-08.04.2011, Vienna, Austria.


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 [Invited talk] In: EPOCA Third Annual Meeting, Royal Academy of Belgium for Science and the Arts, 09.-13.05.2011, Brussels, Belgium.


Sommer, U., Lewandowska, A. M., Biermann, A., Breithaupt, P., Lengfellner, K., von Scheibner, K., Wohlers, J., Engel, A., Jürgens, K., Hoppe, H. G., Riebesell, U. and Gaedke, U. (2010) Climate change effects on the plankton spring bloom - overview of the Kiel Mesocosm Cluster [Talk] In: Aquashift-Conference: LIfe in Warming Waters, 04.-07.10.2010, Kiel, Germany.


Biermann, A., Engel, A., Sommer, U. and Riebesell, U. (2010) Effect of a ‚sunny week‘ on biomass composition in a marine plankton community (Why copepods may not like sunny weeks in winter) [Talk] In: Life in warming waters: Aquashift Conference, 07.09.2010, Kiel, Germany.


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 [Talk] In: 13. ISME Symposium, 22.-27.08.2010, Seattle, USA.

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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 [Talk] In: EPOCA, BIOACID, UKOARP Annual Meeting 2010, 27.09.-30.09.2010, Bremerhaven, Germany.


Engel, A. (2010) Microbial Control of Dissolved Organic Matter in Changing Seas [Invited talk] In: IFM-GEOMAR Colloquium, 06.05.2010, Kiel, Germany.


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 coccolithophorid bloom in the northern Bay of Biscay: results from PEACE project [Talk] In: XII International Symposium on Oceanography of the Bay of Biscay, 03.-06.05.2010, Brest, France.


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 [Talk] In: ICES-WGPME Annual Meeting (ICES Working Group on Phytoplankton and Microbial Ecology), 02.-05.03.2010, Aberdeen, UK.


Engel, A. (2010) Why marine organics matter when climate changes [Invited talk] In: Colloquium University Hamburg, 2010, Hamburg, Germany.


Biermann, A., Engel, A., Sommer, U. and Riebesell, U. (2009) Effect of temperature and copepod density on the cycling of organic matter - the Kiel mesocosm experiment 2009 [Talk] In: AQUASHIFT-Workshop, 07.-09.09, Kiel, Germany.


Engel, A. (2009) Will the biological pump respond to ocean acidification? [Invited talk] In: Gordon Research Conferences; Chemical Oceanography; Process, Dynamics, and Change in the Anthropocene Ocean, 02.-07.08.2009, Tilton, NH, USA.


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 [Talk] In: Ocean Sciences Meeting, 02.-07.03.2008, Orlando, FL, USA.


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 [Talk] In: SOPRAN annual meeting 2008, 11.-12.03.2008, Rostock/Warnemünde, Germany.


Engel, A. (2008) Organic and export production, elemental ratios [Invited talk] In: Workshop on Best Practices for Ocean Acidification Research and Data Reporting, IFM-GEOMAR, 19.-21.11.2008, Kiel, Germany.


Engel, A. (2008) Reactivity and fate of organic matter in the ocean [Invited talk] In: IFM-GEOMAR Colloquium, 2008, Kiel, Germany.


Engel, A. (2008) Testing the effects of ocean acidification on marine plankton: What can we expect in the future? [Invited talk] In: SOMAS Special Seminar, Stony Brook University, 2008, Stony Brook, USA.


Schartau, M., Engel, A. and Colijn, F. (2008) Transformation of dissolved organic matter and its diverse effect on higher trophic level [Talk] In: ICES Annual Science Conference, 22.-26.09.2008, Halifax, Canada.


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 (spring 2008) - a mesocosm study [Talk] In: 5. AQUASHIFT-Workshop (in the framework of the DGL Annual Meeting), 22.-26.09, Konstanz.


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 [Talk] In: International Symposium "Effects of Climate Change on the World's Oceans", 19.-23.05.2008, Gijón, Spain.


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 [Talk] In: 37th Annual Conference of the Ecological Society of Germany, Austria and Switzerland, 12.09, Marburg.


Engel, A., Bellerby, R., Delille, B., Schulz, K. G., Riebesell, U. and Schartau, M. (2007) Effect of CO2 concentration on suspended particle dynamics during a mesocosm bloom experiment (Peece II) [Talk] In: EGU General Assembly, 15.-20.04.2007, Vienna, Austria.


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 [Talk] In: 10th Symposium on Aquatic Microbial Ecology, 02.-07.09.2007, Faro, Portugal.


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 [Talk] In: 42. European Marine Biology Symposium (EMBS), 27.-31.08.2007, Kiel, Germany.


Lunau, M., Martens-Habbena, W., Simon, M., Engel, A. and Gasol, J. (2007) Preservation of marine bacteria induces rapid changes of cellular nucleic acids [Talk] In: SAME10, 02.-07.09.2007, Faro, Portugal.


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 [Talk] In: 37th Annual Conference of the Ecological Society of Germany, Austria and Switzerland, 10.-24.09.2007, Marburg, Germany.


Wohlers, J., Engel, A. and Riebesell, U. (2006) The impact of temperature on the temporal development of phytoplankton stoichiometry during a spring blossom [Other] In: 3. AQUASHIFT Workshop, 14.-16.11.2006, Kiel, Germany.


Grossart, H. P., Allgaier, M., Passow, U., Engel, A., Schulz, K. and Riebesell, U. (2004) The effect of different CO2 concentrations on bacterial abundance and activity in the course of a diatom bloom [Talk] In: Abstract VAM, 2004, Braunschweig, Germany.


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 Terbrueggen, A. (2003) Biological responses to CO2-related changes in seawater carbonate chemistry during a bloom of Emiliania huxleyi [Talk] In: EGS-AGU-EUG Joint Assembly 2003, 06.-11.04.2003, Nice, France.


Engel, A., Heemann, C., Schartau, M., Schneider, U., Thoms, S., Delille, B., Jacquet, S., Zondervan, I. and Riebesell, U. (2003) Transparent Exopolymer Particles (TEP) production by marine phytoplankton in response to increasing CO2: laboratory and field mesocosm experiments [Talk] In: EGS-AGU-EUG Joint Assembly, 06.-11.04.2003, Nice, France.


Engel, A., Riebesell, U. and Zondervan, I. (2002) The Role of Transparent Exopolymer Particles (TEP) for Variations of the C:N:P Ratios during Phytoplankton Blooms [Talk] In: EGS XXVII General Assembly, 21.- 26.04.2002, Nice, France.


Engel, A. (2001) Bildung von transparenten exopolymeren Partikeln (TEP) im Verlauf von Phytoplanktonblüten: Potentielle Bedeutung für den marinen Kohlenstoffkreislauf [Invited talk] In: ICBM Colloquium, University of Oldenburg, 2001, Oldenburg, Germany.


Engel, A. (1999) Einfluß transparenter exopolymerer Partikel (TEP) auf die Bildung und Zusammensetzung von Marinen Aggregaten [Invited talk] In: Alfred-Wegener-Institut (AWI), 1999, Bremerhaven, Germany.

Conference poster

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Hepach, H., Piontek, J., Schroedter, L. M., Bange, H. W., Loginova, A. N. and Engel, A. (2019) The CoastSens project - providing a unique tool for coastal environmental monitoring in the Baltic Sea [Poster] In: SOLAS Open Science Conference 2019, 21.-25.04.2019, Sapporo, Japan.


Loginova, A. N., Dale, A. W., Thomsen, S., Sommer, S., Wallmann, K. and Engel, A. (2018) Sediment release of dissolved organic matter in the oxygen minimum zone off Peru [Poster] In: Ocean Deoxygenation Conference, 03.09.-07.09.2018, Kiel, Germany.

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Quack, B., Fuhlbruegge, S., Hepach, H., Atlas, E., Stemmler, I., Krüger, K., Bracher, A., Marandino, C. A., Engel, A., Endres, S. and Tegtmeier, S. (2017) Halocarbons from anthropogenic and natural sources in the Macaronesia region (future research): Cape Verde: A natural laboratory for investigating the cycling of radiatively and chemically active trace gases between the surface ocean and the tropical atmosphere [Poster] In: International Workshop on Marine & Atmospheric Sciences, 12.-17.11.2017, Ocean Science Centre Mindelo, Cape Verde.


Piontek, J., Massmig, M., Endres, S., Le Moigne, F. A. C., Bange, H. W. and Engel, A. (2016) Bacterial Activity and Organic Matter Turnover in Oxygen Deficient Waters of the Baltic Sea [Poster] In: Ocean Sciences Meeting 2016, 21.-26.02.2016, New Orleans, USA.


Endres, S., Schiewe, D., Quack, B., Piontek, J., Hepach, H. and Engel, A. (2016) Biogenic sources and sinks of bromocarbon in different marine environments [Poster] In: Ocean Sciences Meeting 2016, 21.-26.02.2016, New Orleans, USA.

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Hepach, H., Quack, B., Atlas, E., Fiehn, A., Tegtmeier, S., Bracher, A., Engel, A., Fuhlbruegge, S. and Krüger, K. (2016) Do climate feedbacks in the tropical East Pacific impact emissions of biogenic halocarbons? [Poster] In: Ocean Sciences Meeting 2016, 21.-26.02.2016, New Orleans, USA.


Engel, A., Sun, C. and Sperling, M. (2015) Accumulation patterns of organic matter in the surface microlayer: Results from field, mesocosm and wind channel studies [Poster] In: SOLAS Open Science Conference, 07.-11.09.2015, Kiel, Germany.


Michels, J., Stippkugel, A., Wirtz, K. and Engel, A. (2015) Aggregation of microplastics with marine biogenic particles [Poster] In: ASLO Aquatic Sciences Meeting 2015, 22.-27.02.2015, Granada, Spain.


Krall, K. E., Kunz, J., Bopp, M., Kiefhaber, D., Ribas Ribas, M., Rahlff, J., Wurl, O., Sun, C., Sperling, M., Engel, A., Nölscher, A. C., Derstroff, B., Williams, J., Schneider, B. and Jähne, B. (2015) Air-sea gas transfer of sparingly soluble tracers during the SOPRAN seawater gas exchange experiment at the Heidelberg aeolotron [Poster] In: SOLAS Open Science Conference, 07.-11.09.2015, Kiel, Germany.

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Hepach, H., Quack, B., Engel, A., Fuhlbrügge, S., Atlas, E., Bracher, A., Raimund, S., Flöter, S., Galgani, L., Krüger, K. and Tegtmeier, S. (2015) Contributions from the Peruvian upwelling to the tropospheric iodine loading above the tropical East Pacific [Poster] In: The Ocean Surface Microlayer and Biogeochemical Feedbacks in the Earth System workshop, Ocean Interfaces semester topic Future Ocean, 01.-03.07.2015, Kiel, Germany.

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Hepach, H., Quack, B., Tegtmeier, S., Engel, A., Lampel, J., Fuhlbruegge, S., Bracher, A., Atlas, E. and Krüger, K. (2015) Contributions from the Peruvian upwelling to the tropospheric iodine loading above the tropical East Pacific [Poster] In: SOLAS Open Science Conference, 07.-11.09.2015, Kiel, Germany.


Bergen, B., Endres, S., Engel, A., Zark, M., Dittmar, T., Sommer, U. and Jürgens, K. (2015) Effect of acidification and warming on planktonic bacterial communities during two seasonal phytoplankton bloom mesocosms [Poster] In: SAME14 - Symposium on Aquatic Microbial Ecology, 23.-28.08.2015, Uppsala, Sweden.


Sun, C., Sperling, M. and Engel, A. (2015) Effect of wind speed on the size distribution of biogenic gel particles in the surface microlayer [Poster] In: SOLAS Open Science Conference, 07.-11.09.2015, Kiel, Germany.


Engel, A. and Borchard, C. (2015) Extracellular release of primary production by Emiliana Huxleyi: insights to structure and function of dissolved combined carbohydrates [Poster] In: ASLO Aquatic Sciences Meeting 2015, 22.-27.02.2015, Granada, Spain.


Endres, S., Hepach, H., Marandino, C., Quack, B. and Engel, A. (2015) Microbial control of bromocarbons in the surface ocean [Poster] In: ASLO Aquatic Sciences Meeting 2015, 22.-27.02.2015, Granada, Spain.


Endres, S., Hepach, H., Marandino, C., Quack, B. and Engel, A. (2015) Microbial control of bromocarbons in the surface ocean [Poster] In: The Ocean Surface Microlayer and Biogeochemical Feedbacks in the Earth System workshop, Ocean Interfaces semester topic Future Ocean, 01.-03.07.2015, Kiel, Germany.


Endres, S., Hepach, H., Marandino, C., Quack, B. and Engel, A. (2015) Microbial control of bromocarbons in the surface ocean [Poster] In: SOLAS Open Science Conference, 07.-11.09.2015, Kiel, Germany.


Endres, S., Piontek, J., Schiewe, D., Marandino, C., Quack, B., Hepach, H. and Engel, A. (2015) Microbial control of bromocarbons in the surface ocean [Poster] In: Future Ocean: Cluster Retreat 2015, 14.-15.10.2015, Schleswig, Germany.


Galgani, L., Piontek, J. and Engel, A. (2015) Organic composition of the sea-surface microlayer in the Central Arctic under enhanced sea ice melting [Poster] In: The Ocean Surface Microlayer and Biogeochemical Feedbacks in the Earth System workshop, Ocean Interfaces semester topic Future Ocean, 01.-03.07.2015, Kiel, Germany.


Dammrich, T., van Beusekom, J. E. and Engel, A. (2014) Characteristics of marine aggregates during the phytoplankton spring bloom in a temperate tidal basin [Poster] In: Ocean Sciences Meeting 2014, 23.-28.02.2014, Honululu, Hawaii, USA.


Endres, S., Karthäuser, C. and Engel, A. (2014) Combined effects of temperature and CO2 on organic matter dynamics in the surface microlayer and consequences for air-sea gas exchange [Poster] In: BIOACID Annual Meeting 2014, 10-11.09.2014, Kiel, Germany.

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Loginova, A., Roa, J., Thomsen, S., Kanzow, T. and Engel, A. (2014) Distribution of transparent exopolymer particles in the easter tropical south Pacific [Poster] In: Ocean Sciences Meeting 2014, 23.-28.02.2014, Honululu, Hawaii, USA.


Cisternas-Novoa, C., Lee, C. and Engel, A. (2014) Transparent Exopolymeric (TEP) and Coomassie Blue Stainable (CSP) particles in the North Atlantic Ocean, using a new dye-binding assay for determination of CSP [Poster] In: Ocean Sciences Meeting 2014, 23.-28.02.2014, Honululu, Hawaii, USA.


Galgani, L., Stolle, C., Endres, S., Schulz, K. G., Jürgens, K. and Engel, A. (2013) Bacteria mediated alteration of the gelatinous surface microlayer [Poster] In: SOPRAN Kick-off Meeting, 19.-20.03.2013, Leipzig, Germany.


Cisternas-Novoa, C., Lee, C., Engel, A., Dammrich, T. and de Jesus, R. (2013) Effect of Ocean Acidification on the Gel Particle Composition and Physical Properties of Aggregates of Diatoms [Poster] In: Gordon Research Conference - Chemical Geography of the Sea, 04.-09.08.2013, Biddeford, USA.


Stolle, C., Galgani, L., Endres, S., Schulz, K. G., Engel, A. and Jürgens, K. (2013) Interplay of bacteria and organic gel particles at the air-sea interface: effects on ocean carbon dynamics in a changing climate [Poster] In: First EMBO Conference on Aquatic Microbial Ecology – SAME13, 8.09.13-10.09.13, Stresa, Italy.


Galgani, L., Piontek, J. and Engel, A. (2013) The marine surface microlayer, link between ocean surface biology and cloud properties: results from an expedition to the Central Arctic [Poster] In: 10. JaGFOS Symposium, 31.10. - 3.11.13, Tokyo, Japan.


Galgani, L., Roa, J., Engel, A., Bange, H. W. and Gade, M. (2013) The sea-surface microlayer during the R/V Meteor Cruise M91: Measurements and satellite detection of surface films [Poster] In: SOPRAN Kick-off Meeting, 19.-20.03.2013, Leipzig, Germany.


Galgani, L., Roa, J., Engel, A., Bange, H. W. and Gade, M. (2013) The sea-surface microlayer during the R/V Meteor Cruise M91: Measurements and satellite detection of surface films. [Poster] In: SOPRAN Kick-off Meeting, 19.-20.03.2013, Leipzig, Germany.


Endres, S., Galgani, L. and Engel, A. (2012) Marine bacteria thrive when the ocean acidifies [Poster] In: ISME14 - 14th International Symposium on Microbial Ecology, 19.-24.08.2012, Copenhagen, Denmark.


Galgani, L. and Engel, A. (2012) Studies on the gelatinous composition of the sea-surface microlayer during indoor and field off-shore mesocosm experiments [Poster] In: 5. SOPRAN Annual Meeting, 20.-21.03.2012, Kiel, Germany.


Galgani, L. and Engel, A. (2012) Studies on the sea-surface microlayer composition and the emission of primary marine organic aerosols as consequence of climate change [Poster] In: SOLAS Open Science Conference, 07. - 10.05.2012, Cle Elum, Washington, USA.


Galgani, L. and Engel, A. (2012) Studies on the sea-surface microlayer composition and the emission of primary organic aerosols from marine systems [Poster] In: SOLAS Open Science Conference, 07. - 10.05.2012, Cle Elum, Washington, USA.


Harlay, J., Chou, L., De Bodt, C., Van Oostende, 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) [Poster] In: EGU General Assembly 2011, 03.-08.04.2011, Vienna, Austria.


Galgani, L. and Engel, A. (2011) The C-cycle on ocean’s surface. Insights to the composition of the sea surface microlayer [Poster] In: AEHMS - Aquatic Ecosystems Health and Management Society Conference, 13.-15.06.2011, Siena, Italy.


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 [Poster] In: EGU General Assembly 2011, 03.-08.04.2011, Vienna, Austria.


Galgani, L. and Engel, A. (2011) Global change and C-cycle at the air-sea interface: the sea surface microlayer and marine aerosol emission [Poster] In: SOLAS Summer School, 29.08-10.09.2011, Cargese, Corsica, France.


Cisternas-Nuevo, C., Lee, C. and Engel, A. (2011) Measurements of proteinaceous and polysaccharide-rich particles produced by bubbling phytoplankton exduates [Poster] In: ASLO Aquatic Sciences Meeting, 13.-18.02.2011, San Juan, Puerto Rico, USA.


Galgani, L. and Engel, A. (2011) The sea surface microlayer and marine aerosol emission [Poster] In: 8. Japanese-German Frontiers of Science Symposium 2011 (JaGFOS), 27.-30.10.2011, Tokyo, Japan.


Biermann, A. and Engel, A. (2009) Effect of CO2 on the properties and sinking velocity of aggregates of the coccolithophore Emiliania huxleyi. [Poster] In: ASLO Aquatic Sciences Meeting, 25.-30.01, Nice, France.


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 [Poster] In: ASLO Aquatic Sciences Meeting, 25.-30.01.2009, Nice, France.


Händel, N., Piontek, J., Wohlers, J., Riebesell, U. and Engel, A. (2008) Dynamics of dissolved neutral and acidic sugars in seawater [Poster] In: ASLO Ocean Sciences Meeting, 02.-07.03.2008, Orlando, USA.


Engel, A., Händel, N., Grossart, H. P., Wohlers, J. and Riebesell, U. (2008) Effects of increasing temperature on the production and molecular composition of DOM during an indoor-mesocosm experiment [Poster] In: 5. AQUASHIFT-Workshop (in the framework of the DGL Annual Meeting), 22.-26.09.2008, Konstanz, Germany.


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 [Poster] In: SOPRAN annual meeting 2008, 11.-12.03.2008, Rostock/Warnemünde, Germany.


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 [Poster] In: ASLO Ocean Sciences Meeting, 02.-07.03.2008, Orlando, USA.


Piontek, J., Langer, G., Händel, N., Riebesell, U., Wohlers, J. and Engel, A. (2006) Effects of rising temperature on the decomposition of phytoplankton aggregates [Poster] In: 3. AQUASHIFT Workshop, 14.-16.11.2006, Kiel, Germany.


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 [Poster] In: ESSP Global Change Open Science Conference, 09.-12.11.2006, Beijing, China.


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 [Poster] In: 8. International Conference on Paleoceanography, ICP 8, 05.09.-10.09.2004, Biarritz, France.

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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 [Poster] In: SOLAS Open Science Conference 2004, 13.-16.10.2004, Halifax, Canada.


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 [Poster] In: EGS-AGU-EUG Joint Assembly 2003, 06.-11.04.2003, Nice, France.


Thoms, S., Engel, A., Riebesell, U. and Zondervan, I. (2003) Modeling the aggregation of dissolved polysaccharides during a marine phytoplankton bloom [Poster] In: IGBP/SCOR Open Science Meeting on Ocean Biogeochemistry and Ecosystems Analysis, 07.-10.01.2003, Paris, France.

Thesis - published by a publisher

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Engel, A. (1998) Bildung, Zusammensetzung und Sinkgeschwindigkeiten mariner Aggregate (Doctoral thesis/PhD), Christian-Albrechts-Universität Kiel, Kiel, Germany, 145 pp

Report - Cruise Report

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Körtzinger, A., Andrae, A., Baschek, B., Becker, K., Behr, H. D., Blandfort, D., Calil, P., Carrasco, R., Dengler, M., Devresse, Q., Engel, A., Fiedler, B., Fischer, G., Fischer, T., Flintrop, C., Fomba, K. W., Golde, S., Hahn, T., Hauss, H., Hepach, H., Heymann, K., Hieronymi, M., Horstmann, J., Hufnagel, L., Iversen, M. H., Karstensen, J., Katzenmeier, S., Knudsen, J., Kock, T., Krahmann, G., Krasemann, H., Merckelbach, L., Moradi, N., Nothof, M., Paulsen, M., Raeke, A., Röttgers, R., Schultze, L. and Stoeck, T. (2020) Eddy Study to Understand Physical-Chemical-Biological Coupling and the Biological Carbon Pump as a Function of Eddy Type off West Africa, Cruise No. M160, 23.11.2019 - 20.12.2019, Mindelo (Cabo Verde) - Mindelo (Cabo Verde) UNSPECIFIED, Bonn, Germany.

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Barthelmess, T., Loginova, A. N., Grosse, J. and Engel, A. (2019) Alkor Report AL523.2 : Practical at Sea: M. Sc. Advanced Course in Biological Oceanography UNSPECIFIED, Kiel, Germany.

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Engel, A. (2015) Short Report Alkor Cruise AL 458 [AL458] (Kiel-Riga-Kiel), 03.06.2015-19.06.2015 GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel.

Report - other report

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Ambsdorf, J., Engel, A., Grabe, J., Kronfeld-Goharani, U., Latif, M., Lenz, M., Lotze, H., Matz-Lück, N., Müller, A., Neumann, B., Ott, K., Petersen, S., Quaas, M., Reusch, T. B. H., Riebesell, U., Schulz, C., Unmüßig, B., Unger, S., Visbeck, M., Wahl, M., Wallmann, K. J. G. and Wodtke, L. and Heinrich-Böll-Stiftung Schleswig-Holstein, Heinrich-Böll-Stifung (Bundesstiftung), Kieler Exzellenzcluster Ozean der Zukunft, Le Monde diplomatique (2017) Meeresatlas: Daten und Fakten über unseren Umgang mit dem Ozean Heinrich Böll Stiftung, Berlin, Germany.

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Ambsdorf, J., Engel, A., Grabe, J., Kronfeld-Goharani, U., Latif, M., Lenz, M., Lotze, H., Matz-Lück, N., Müller, A., Neumann, B., Ott, K., Petersen, S., Quaas, M., Reusch, T. B. H., Riebesell, U., Schulz, C., Unmüßig, B., Unger, S., Visbeck, M., Wahl, M., Wallmann, K. J. G. and Wodtke, L. and Heinrich-Böll-Stiftung Schleswig-Holstein, Heinrich-Böll-Stifung (Bundesstiftung), Kieler Exzellenzcluster Ozean der Zukunft, Le Monde diplomatique (2017) Ocean Atlas : facts and figures about our relationship with the ocean Heinrich Böll Stiftung, Berlin, Germany.

This list was generated on Fri May 29 15:12:16 2020 CEST.