Dr. Helge-Ansgar Giebel

Institute for Chemistry and Biology of the Marine Environment  (» Postal address)

WHV1B: 1. OG 129; OL: W15-1-148 (» Adress and map)

nach Vereinbarung.

+49 441 798-8184  (F&P

Dr. Helge-Ansgar Giebel

  • Coordination of flow cytometry lab
  • Determination of cell numbers  and cell sorting
  • Marine microbial ecology, biological oceanography
  • Phytoplankton-bacteria interaction
  • Sustainable and ecosystem strengthening coastal protection
  • Biooptical measurement tools
  •  research vessels

Research Interests

  • Marine microbial ecology, biogeography, bacterial community structure
  • Isolation and characterisation of novel strains, genomic analysis
  • Dynamics of free and surface-attached bacteria
  • Phytoplankton-bacteria interaction
  • Sustainable and ecosystem strengthening coastal protection
  • Biooptical measurement tools
  • Design and improvement of methods and experimental setups
  • Design of inter-disciplinary ship-based research campaigns


Find my publications as well by using my ORCID-ID: 0000-0002-9452-0810

Balmonte, JP; Giebel, H-A; Carol Arnosti, C; Meinhard Simon, M; Wietz M. (2024) Distinct bacterial succession and functional response to alginate in the South, Equatorial, and North Pacific Ocean. Environ Microbiol 26 (3), e16594. https://doi.org/10.1111/1462-2920.16594

Jacob, M; Thomas, PK; Giebel, H-A; Billerbeck, S.; Simon, M; Striebel, M.; Dlugosch, L. (2024) Cross-domain diversity effects: linking diatom species richness, intraspecific richness, and biomass production to host-associated bacterial diversity, ISME Commun, online first, ycae046, https://doi.org/10.1093/ismeco/ycae046

Rahlff, J.; Esser, S.P.; Plewka, J.; Heinrichs, M.E.; Soares, A.; Scarchilli, C.; Grigioni, P.; Wex, H.; Giebel, H.-A.; Probst; A.J. (2023). Marine viruses disperse bidirectionally along the natural water cycle. Nat Commun 14, 6354. https://doi.org/10.1038/s41467-023-42125-5

Rahlff, J.; Wietz, M.; Giebel, H.-A.; Bayfield, O.; Nilsson, E.; Bergström, K.;  Kieft, K.; Anantharaman, K.; Ribas-Ribas, M.; Schweitzer, H.D.; Wurl, O.; Hoetzinger, M.;  Antson, A.; Holmfeldt, K. (2023) Ecogenomics and cultivation reveal distinctive viral-bacterial communities in the surface microlayer of a Baltic Sea slick. ISME COMMUN. 3, 97. https://doi.org/10.1038/s43705-023-00307-8

Giebel, H-A (2023). Educational cruise - Biological oceanography: Plankton dynamics in the German Bight, HE615, March 25 - March 30, 2023, Bremerhaven (Germany) - Bremerhaven (Germany). Heincke-Berichte, cruise report. https://doi.org/10.48433/cr_he615

Tran, QD, TR Neu, S Sultana, H-A Giebel, M Simon, S Billerbeck (2023) Distinct glycoconjugate cell surface structures make the pelagic diatom Thalassiosira rotula an attractive habitat for bacteria. J. Phycol. 59:309–322. https://doi.org/10.1111/jpy.13308

Giebel, H-A (2022). Educational cruise - Biological oceanography: Plankton dynamics in the German Bight, HE594, March 10 - March 15, 2022, Bremerhaven (Germany) - Bremerhaven (Germany). Heincke-Berichte, cruise report. http://doi.org/10.48433/cr_he594

Wienhausen G, L Dlugosch, R Jarling, H Wilkes, H-A Giebel and M Simon (2022). Availability of vitamin B12 and its lower ligand intermediate α-ribazole impact prokaryotic and protist communities in oceanic systems. ISME J, 16, 2002–2014. https://doi.org/10.1038/s41396-022-01250-7

Giebel H-A, Arnosti C, Badewien TH, Bakenhus I, Balmonte JP, Billerbeck S, Dlugosch L, Henkel R, Kuerzel B, Meyerjürgens J, Milke F, Voss D, Wienhausen G, Wietz M, Winkler H, Wolterink M and S Meinhard (2021) Microbial Growth and Organic Matter Cycling in the Pacific Ocean Along a Latitudinal Transect Between Subarctic and Subantarctic Waters. Front. Mar. Sci. 8:764383. https://doi.org/10.3389/fmars.2021.764383

Balmonte JP, M Simon, H-A Giebel, C Arnosti (2021) A sea change in microbial enzymes: Heterogeneous latitudinal and depth-related gradients in bulk water and particle-associated enzymatic activities from 30°S to 59°N in the Pacific Ocean. Limnol. Oceanogr. 66 (9): 3489-3507. https://doi.org/10.1002/lno.11894

Giebel, H-A (2021). Educational cruise - Biological oceanography: Plankton dynamics in the German Bight, HE571, March 22 - March 28, 2021, Bremerhaven (Germany) - Bremerhaven (Germany). Heincke-Berichte, cruise report. http://doi.org/10.48433/cr_he571

Rahlff J, C StolleC, H-A Giebel, NIH Mustaffa, O Wurl and DPR Herlemann (2021) Sea foams are ephemeral hotspots for distinctive bacterial communities contrasting sea-surface microlayer and underlying surface water. FEMS Microbiol Ecol, fiab035, https://doi.org/10.1093/femsec/fiab035

Silvano E, Yang M, Wolterink M, Giebel H-A, Simon M, Scanlan DJ, Zhao Y and Chen Y (2020) Lipidomic Analysis of Roseobacters of the Pelagic RCA Cluster and Their Response to Phosphorus Limitation. Front Microbiol 11, 3240. https://doi.org/10.3389/fmicb.2020.552135

Rahlff, J, H-A Giebel, C Stolle, O Wurl, AJ Probst, and DPR Herlemann (2020) Overlooked diversity of ultramicrobacterial minorities at the air-sea interface. Atmosphere, 11(11), 1214; https://doi.org/10.3390/atmos11111214.

Giebel, H-A (2020). Educational cruise - Biological oceanography: Plankton dynamics in the German Bight, HE549, March 19 - March 21, 2020, Bremerhaven (Germany) - Bremerhaven (Germany). Heincke-Berichte, cruise report. https://doi.org/10.2312/cr_he549

Miranda, ML, H Osterholz, H-A Giebel, P. Bruhnke, T. Dittmar; O Zielinski (2020) Impact of UV radiation on DOM transformation on molecular level using FT-ICR-MS and PARAFAC. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 230, 118027. https://doi.org/10.1016/j.saa.2020.118027

Hansen CT, J Niggemann, H-A Giebel, M Simon, W Bach, T Dittmar (2019). Biodegradability of hydrothermally altered deep-sea dissolved organic matter. Marine Chemistry 217, 103706. https://doi.org/10.1016/j.marchem.2019.103706

Giebel, H-A (2019). Educational cruise - Biological oceanography: Plankton dynamics in the German Bight, HE526, March 12 - March 16, 2019, Bremerhaven (Germany) - Bremerhaven (Germany). Heincke-Berichte, cruise report. https://doi.org/10.2312/cr_he526

Robinson T-B, H-A Giebel and O Wurl (2019). Riding the plumes: Characterizing bubble scavenging conditions for the enrichment of the sea-surface microlayer by transparent exopolymer particles. Atmosphere 10 (8), 454. https://doi.org/10.3390/atmos10080454

Bakenhus, I., B. Wemheuer, P. Akyolb, H.-A. Giebel, L. Dlugosch, R. Daniel, M. Simon (2019). Distinct relationships between fluorescence in situ hybridization and16S rRNA gene- and amplicon-based sequencing data of bacterioplankton lineages.. Syst Appl Microbiol. doi: 10.1016/j.syapm.2019.06.005

Giebel, H-A, M Wolterink, T Brinkhoff and M Simon (2019). Complementary energy acquisition via aerobic anoxygenic photosynthesis and carbon monoxide oxidation by Planktomarina temperata of the Roseobacter group. FEMS Microbiol Ecol 95,5: fiz050. https://doi.org/10.1093/femsec/fiz050

Rahlff J, Stolle C, Giebel H-A, Ribas-Ribas M, Damgaard LR and Wurl O (2019). Oxygen Profiles Across the Sea-Surface Microlayer - Effects of Diffusion and Biological Activity. Front. Mar. Sci. 6:11. https://doi.org/10.3389/fmars.2019.00011

Bakenhus I, Dlugosch L, Giebel HA, Beardsley C, M Simon and M Wietz (2018). Distinct biogeographic patterns of bacterioplankton composition and single‐cell activity between the subtropics and Antarctica. environ Microbiol 20 (8): 3100-3108.  https://doi.org/10.1111/1462-2920.14383

Klotz F, T Brinkhoff, HM Freese, M Wietz, A Teske, M Simon and HA Giebel (2018). Tritonibacter horizontis gen. nov., sp. nov., a member of the Rhodobacteraceae, isolated from the Deepwater Horizon oil spill. Int J Sys Evol Microbiol. First Published Online: doi: 10.1099/ijsem.0.002573

Bakenhus I, Dlugosch L, Billerbeck S, Giebel HA, Milke F and M Simon (2017) Composition of total and cell-proliferating bacterioplankton community in early summer in the North Sea – roseobacters are the most active component. Front Microbiol. 8:1771. doi.org/10.3389/fmicb.2017.01771

Rahlff J, Stolle C, Giebel HA, Brinkhoff T, Ribas-Ribas M, Hodapp D, Wurl O (2017) High wind speeds prevent formation of a distinct bacterioneuston community in the sea-surface microlayer. FEMS Microbiol Ecol. 93: Article Number: fix041. doi:  10.1093/femsec/fix041 

Milici M, Vital M, Tomasch J, Badewien TH, Giebel HA, Plumeier I, Wang H, Pieper DH, Wagner-Döbler I, Simon M (2017). Diversity and community composition of particle-associated and free-living bacteria in mesopelagic and bathypelagic Southern Ocean water masses: evidence of dispersal limitation in the Bransfield strait. Limnol Oceanogr 62:1080–1095 DOI:10.1002/lno.10487

Wemheuer B, Wemheuer F, Meier D, Billerbeck S, Giebel HA, Simon M, Scherber C, Daniel R (2017). Linking Compositional and Functional Predictions to Decipher the Biogeochemical Significance in DFAA Turnover of Abundant Bacterioplankton Lineages in the North Sea. Microorganisms 5, 68; doi:10.3390/microorganisms5040068

Djurhuus A, Mikalsen S-O, Giebel HA, Rogers A (2017) Cutting through the smoke: diversity of free-living bacteria in deep-sea hydrothermal plumes. R. Soc. Open sci. 4: 160829. https://doi.org/10.1098/rsos.160829

Fischer R, Giebel HA, Ptacnik R (2017) Identity of the limiting nutrient (N vs. P) affects the competitive success of mixotrophs. Mar Ecol Prog Ser 563:51-63. https://doi.org/10.3354/meps11968

Giebel HA, Klotz F, Voget S, Poehlein A, Grosser K, Andreas Teske A, Brinkhoff T (2016) Draft genome sequence of the marine Rhodobacteraceae strain O3.65, cultivated from oil-polluted seawater of the Deepwater Horizon oil spill. Stand Genomic Sci. 11:81. https://doi.org/10.1186/s40793-016-0201-7

Fischer R, Giebel HA, Hillebrand H, Ptacnik R. (2016) Importance of mixotrophic bacterivory can be predicted by light and loss rates. Oikos. Doi:10.1111/oik.03539

Billerbeck S, Wemheuer B, Voget S, Poehlein A, Giebel HA, Brinkhoff T, Gram L, Jeffrey WH, Daniel R, Simon M (2016) Biogeography and environmental genomics of the Roseobacter-affiliated pelagic CHAB-I-5 lineage. Nature Microbiol. Article no. 16063, DOI:10.1038/NMICROBIOL.2016.63.

Milici M, Deng ZL, Tomasch J, Decelle J, Wos-Oxley M, Wang H, Jáuregui R, Plumeier I, Giebel HA, Badewien H, Wurst M, Pieper P, Simon M, Wagner-Doebler I (2016) Co-occurrence analysis of microbial taxa in the Atlantic Ocean reveals high connectivity in the free-living bacterioplankton. Frontiers Microbiol. 7: Article 649. https://doi.org/10.3389/fmicb.2016.00649

Milici M, Tomasch J, Wos-Oxley M, Decelle J, Jáuregui R, Wang H, Deng ZL, Plumeier I, Giebel HA, Badewien T, Wurst M, Pieper DH, Simon M, Wagner-Doebler I (2016) Bacterioplankton biogeography in the Atlantic Ocean: a case study of the distance-decay relationship. Frontiers Microbiol. 7: Article 590 (doi:10.3389/fmicb.2016.00590).

Milici M, Tomasch J, Wos-Oxley ML, Wang H, Jáuregui R, Camarinha-Silva A, Deng ZL, Plumeier I, Giebel HA, Wurst M, Pieper DH, Simon M, Wagner-Döbler I (2016) Low diversity of planktonic bacteria in the tropical ocean. Scientific Reports 6: 19054 (DOI: 10.1038/srep19054).

Osterholz H., Niggemann J., Giebel H.-A., Simon M. and T. Dittmar (2015). Inefficient microbial production of refractory dissolved organic matter in the ocean. Nature Communications 6: 7422. doi:10.1038/ncomms8422

Neumann, A.M., Balmonte J.P.,  Berger M., Giebel H.-A., Arnosti C., Voget S., Simon M., Brinkhoff T. and M. Wietz (2015) Different utilization of alginate and other algal polysaccharides by marine Alteromonas macleodii ecotypes. Environ Mircobiol accepted. DOI: 10.1111/1462-2920.12862

Billerbeck, S., Orchard J., Tindall B.J., Giebel H.-A., Brinkhoff T. and M. Simon (2015) Description of Octadecabacter temperatus sp. nov., isolated from the southern North Sea, emended description of the genus Octadecabacter and reclassification of Octadecabacter jejudonensis Park & Yoon, 2014 as Pseudooctadecabacter jejudonensis gen. nov., comb. nov.. Inter J System Evol Microbiol 65: 1967-1974. https://doi.org/10.1099/ijs.0.000205

Wietz, M., Wemheuer, B., Simon, H., Giebel, H.-A., Seibt, M. A., Daniel R, Brinkhoff T., and Simon M. 2015. Polysaccharides initiate distinct responses of bacterial communities from the Southern and Atlantic Ocean. Environmental Microbiology. accepted. DOI: 10.1111/1462-2920.12842

Simon H., Lipsewers Y.A., Giebel H.-A., Wiltshire K.H., Simon M. (2014) Temperature effects on aggregation during a spring diatom bloom. Limnol Oceanogr. 59 (6): 2089-2100. https://doi.org/10.4319/lo.2014.59.6.2089

Voget, S., Wemheuer B., Brinkhoff T., Vollmers J., Dietrich S., Giebel H.-A., Beardsley C., Sardemann C., Bakenhus I., Billerbeck S., Daniel R. and M. Simon (2015) Adaptation of an abundant Roseobacter RCA organism to pelagic systems revealed by genomic and transcriptomic analyses. The ISME Journal 9: 371-384. https://doi.org/10.1038/ismej.2014.134 pdf.

Giebel, H.-A., Kalhoefer D., Gahl-Janssen R., Choo Y.J., Lee K., Cho J.C., Tindall B.J., Rhiel E., Beardsley C., Aydogmus Ö.O., Voget S., Daniel R., Simon M. and Brinkhoff T (2013). Planktomarina temperata gen. nov., sp. nov., belonging to the globally distributed RCA cluster of the marine Roseobacter clade, isolated from the German Wadden Sea. Inter J System Evol Microbiol 63: 4207–4217. https://doi.org/10.1099/ijs.0.053249-0

Wemheuer B., S. Güllert, S. Billerbeck, H.-A. Giebel, S. Voget, M. Simon, R. Daniel (2014). Impact of a phytoplankton bloom on the diversity of the active bacterial community in the southern North Sea as revealed by metatranscriptomic approaches. FEMS Micro Ecol, 87: 378-389. https://doi.org/10.1111/1574-6941.12230 pdf

Sperling M., H.-A. Giebel, R. Rink, S. Grayek, J. Staneva, E. Stanev, M. Simon (2012). Differential effect of hydrographic and biogeochemical properties on SAR11 and Roseobacter RCA populations in the southern North Sea. Aquat Microb Ecol 67: 25-34. DOI: https://doi.org/10.3354/ame01580 pdf

Giebel, H.-A., D. Kalhoefer, A. Lemke, S. Thole, R. Gahl-Janßen, M. Simon and T. Brinkhoff (2011). Distribution of Roseobacter RCA and SAR11 lineages in the North Sea and characteristics of an abundant RCA isolate. The ISME Journal 5: 8-19. https://doi.org/10.1038/ismej.2010.87  pdf

Giebel, H.-A., T. Brinkhoff, W. Zwisler, N. Selje and M. Simon (2009). Distribution of Roseobacter RCA and SAR11 lineages and distinct bacterial communities from the subtropics to the Southern Ocean. Environmental Microbiology 11: 2164-2178. https://doi.org/10.1111/j.1462-2920.2009.01942.x

Brinkhoff, T., H.-A. Giebel and M. Simon (2008). Diversity, ecology and genomics of the Roseobacter clade: a short overview. Archives of Microbiology 189: 531-539. https://doi.org/10.1007/s00203-008-0353-y

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