Tim Jennerjahn

PD Dr. Tim Jennerjahn

Work Group Leader

Phone: +49 (0)421 23800 - 44

Fax: +49 (0)421 23800 - 30

Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

Office: Fahrenheitstr. 6, Main Building
28359 Bremen
Room: 1103 (1st floor)

ZMT Field data available in these locations

Please email researcher for details.


Research interests

- Carbon and nutrient cycling
- Rivers/estuaries
- Mangrove forests, seagrass meadows
- Continental margins
- Tropical coastal ecosystems
- Biogeochemistry
- Isotope geochemistry
- Reconstruction of carbon and nutrient cycling and climate in the geological past
- Organic matter diagenesis
- Knowledge exchange between Science and Society


For further information on my research see the workgroup page.


I am teaching and supervising students as a Lecturer at the University of Bremen in Faculty 5 Geosciences and in Faculty 2 Biology and Chemistry.


I am an Editor-in-Chief of the peer-reviewed international journal Estuarine, Coastal and Shelf Science (ECSS).

As a Council member and Conference Coordinator I am responsible for the strategic planning and organization of international conferences around the globe at the Estuarine and Coastal Sciences Association (ECSA). Current: ECSA 59, San Sebastian, Spain, 5-8 September 2022


You can find me here:

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LinkedIn

Researchgate

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Orcid


Recently published 'Science Highlight' in the PAGES magazine on the application of paleoecological findings in peatland restoration in Indonesia.

Recently published books: Science for the Protection of Indonesian Coastal Ecosystems (2021), Microbial Communities in Coastal Sediments (2021)

 

Publications

Peer-reviewed journals and books

Karcher, D.B., C. Cvitanovic, I.E. van Putten, R.M. Colvin, D. Armitage, S. Aswani Canela, M. Ballesteros, N.C. Ban, M.J. Barragán, A. Bednarek, J.D. Bell, C. Brooks, T.M. Daw, R. de la Cruz Modino, T.B. Francis, E.A. Fulton, A. Hobday, D. Holcer, C. Hudson, T.C. Jennerjahn, A. Kinney, M. Knol-Kauffman, M.F. Löf, P.F.M. Lopes, P. Mackelworth, A. McQuatters-Gollop, E.-K. Muhl, P. Neihapi, J. Pascual-Fernández, S. Posner, H. Runhaar, K. Sainsbury, G. Sander, D.J. Steenbergen, P.M. Tuda, L. Whiteman, J. Zhang (2022). Advancing knowledge exchange at the interface of marine science and policy: lessons from global bright spots. Journal of Environmental Management 314: 114994. https://doi.org/10.1016/j.jenvman.2022.114994

Thomsen, E., L.S. Herbeck, M. Teichberg, D.R. Wang, S.Q. Chen, T.C. Jennerjahn (2022). Species-specific phenotypic plasticity of two tropical seagrass species to in-situ nutrient enrichment under different trophic conditions. Estuarine, Coastal and Shelf Science 270: 107837. https://doi.org/10.1016/j.ecss.2022.107837

Hapsari, K.A., T.C. Jennerjahn, S.H. Nugroho, E. Yulianto, H. Behling (2022). Sea level rise and precipitation change acting as interactive stressors on development and dynamics of tropical peatlands in coastal Sumatra and South Borneo since the Last Glacial Maximum. Global Change Biology 28: 3459-3479. https://doi.org/10.1111/gcb.16131

Jennerjahn, T.C., T. Rixen, H.E. Irianto, J. Samiaji (2021). Introduction. In Science for the Protection of Indonesian Coastal Ecosystems (eds. T.C. Jennerjahn, T. Rixen, H.E. Irianto, J. Samiaji), Elsevier, p. 1-11. https://doi.org/10.1016/B978-0-12-815050-4.00013-4

Jennerjahn, T.C., A. Baum, A. Damar, M. Flitner, J. Heyde, M.C. Lukas, M. Lukman, M.S. Nugrahadi, T. Rixen, J. Samiaji, F. Schröder (2021). Human interventions in rivers and estuaries of Java and Sumatra. In Science for the Protection of Indonesian Coastal Ecosystems (eds. T.C. Jennerjahn, T. Rixen, H.E. Irianto, J. Samiaji), Elsevier, p. 45-82. https://doi.org/10.1016/B978-0-12-815050-4.00013-4

Jennerjahn, T.C., E.R. Ardli, J. Boy, J. Heyde, M.C. Lukas, I. Nordhaus, M.H. Sastranegara, K. Schwerdtner Mañez, E. Yuwono (2021). Mangrove ecosystems under threat in Indonesia: the Segara Anakan Lagoon, Java, and other examples. In Science for the Protection of Indonesian Coastal Ecosystems (eds. T.C. Jennerjahn, T. Rixen, H.E. Irianto, J. Samiaji), Elsevier, p. 251-284. https://doi.org/10.1016/B978-0-12-815050-4.00013-4

Mohtadi, M., A. Lückge, S. Steinke, H. Permana, S. Susilohadi, R. Zuraida, T.C. Jennerjahn (2021). Late Quaternary environmental history of Indonesia. In Science for the Protection of Indonesian Coastal Ecosystems (eds. T.C. Jennerjahn, T. Rixen, H.E. Irianto, J. Samiaji), Elsevier, p. 347-370. https://doi.org/10.1016/B978-0-12-815050-4.00013-4

Yando, E.S., T.M. Sloey, F. Dahdouh-Guebas, K. Rogers, G.M.O. Abuchahla, S. Cannicci, S.W.J. Canty, T.C. Jennerjahn, D.E. Ogurcak, J.B. Adams, R.M. Connolly, K. Diele, S.Y. Lee, J.K. Rowntree, S. Sharma, K.C. Cavanaugh, N. Cormier, I.C. Feller, S. Fratini, X. Ouyang, A.K.S. Wee, D.A. Friess (2021). Conceptualizing ecosystem degradation using mangrove forests as a model system. Biological Conservation 263: 109355. https://doi.org/10.1016/j.biocon.2021.109355

Hapsari, K.A., S. Biagioni, T.C. Jennerjahn, A. Saad, S. Sabiham, M.D. Corre, E. Veldkamp, H. Behling (2021). Late Holocene ENSO-related fire impact on vegetation, nutrient status and carbon accumulation of peatlands in Jambi, Sumatra, Indonesia. Review of Palaeobotany and Palynology 293: 104482. https://doi.org/10.1016/j.revpalbo.2021.104482

Santos, I.R., D.J. Burdige, T.C. Jennerjahn, S. Bouillon, A. Cabral, O. Serrano, T. Wernberg, K. Filbee-Dexter, J. Guimond, J.J. Tamborski (2021). The renaissance of Odum’s outwelling hypothesis in 'Blue Carbon' science. Estuarine, Coastal and Shelf Science 255: 107361. https://doi.org/10.1016/j.ecss.2021.107361

Herbeck, L.S., U. Krumme, I. Nordhaus, T.C. Jennerjahn (2021). Pond aquaculture effluents feed an anthropogenic nitrogen loop in a SE Asian estuary. Science of the Total Environment 756: 144083. https://doi.org/10.1016/j.scitotenv.2020.144083

Jennerjahn, T.C. (2021). Relevance and magnitude of 'Blue Carbon' storage in mangrove sediments: carbon accumulation rates vs. stocks, sources vs. sinks. Estuarine, Coastal and Shelf Science 248: 107156. https://doi.org/10.1016/j.ecss.2020.107027

Jennerjahn, T.C. (2020). Relevance of allochthonous input from an agriculture-dominated hinterland for 'Blue Carbon' storage in mangrove sediments in Java, Indonesia. In Dynamic Sedimentary Environments of Mangrove Coasts (eds. F. Sidik, D.E. Friess), Elsevier, 393-414. https://doi.org/10.1016/B978-0-12-816437-2.00017-3

Thomsen, E., L.S. Herbeck, T.C. Jennerjahn (2020). The end of resilience: Surpassed nitrogen thresholds led to severe seagrass loss after decades of exposure to aquaculture effluent input. Marine Environmental Research 160: 104986. https://doi.org/10.1016/j.marenvres.2020.104986

Friess, Daniel A., Erik S. Yando, Guilherme M.O. Abuchahla, Janine B. Adams, Stefano Cannicci, Steven W.J. Canty, Kyle C. Cavanaugh, Rod M. Connolly, Nicole Cormier, Farid Dahdouh-Guebas, Karen Diele, Ilka C. Feller, Sara Fratini, Tim C. Jennerjahn, Shing Yip Lee, Danielle E. Ogurcak, Xiaoguang Ouyang, Kerrylee Rogers, Jennifer K. Rowntree, Sahadev Sharma, Taylor M. Sloey, Alison K.S. Wee (2020). Mangroves give cause for conservation optimism, for now. Current Biology 30: R1-R3. https://doi.org/10.1016/j.cub.2019.12.054

Herbeck, L.S., U. Krumme, T.J. Andersen, T.C. Jennerjahn (2020). Decadal trends in mangrove and pond aquaculture cover on Hainan (China) since 1966: mangrove loss, fragmentation and associated biogeochemical changes. Estuarine, Coastal and Shelf Science 233: 106531. https://doi.org/10.1016/j.ecss.2019.106531

Hapsari, K.A., T.C. Jennerjahn, M.C. Lukas, V. Karius, H. Behling (2020). Intertwined effects of climate and land use change on environmental dynamics and carbon accumulation in a mangrove-fringed coastal lagoon in Java, Indonesia. Global Change Biology. https://doi.org/10.1111/gcb.14926

Gillis, L.G., D.A. Saavedra Hortua, M. Zimmer, T.C. Jennerjahn, L.S. Herbeck (2019). Interactive effects of temperature and nutrients on mangrove seedling growth and implications for establishment. Marine Environmental Research 151: 104750. https://doi.org/10.1016/j.marenvres.2019.104750

Contreras-Rosales, L.A., T. Jennerjahn, S. Steinke, M. Mohtadi, E. Schefuß (2019). Holocene changes in biome size and tropical cyclone activity around the Northern South China Sea as recorded by alkane biomarkers. Quaternary Science Reviews 215: 45-63. https://doi.org/10.1016/j.quascirev.2019.05.004

Kusumaningtyas, M.A., A.A. Hutahaean, H.W. Fischer, M. Pérez-Mayo, D. Pittauer, T.C. Jennerjahn (2019). Variability in the organic carbon stocks, sources, and accumulation rates of Indonesian mangrove ecosystems. Estuarine, Coastal and Shelf Science 218: 310-323.https://doi.org/10.1016/j.ecss.2018.12.007

Dsikowitzky, L., A. Damar, S. Ferse, H.E. Irianto, T.C. Jennerjahn, M.C. Lukas, I. Nordhaus, T. Pohlmann, J. Schwarzbauer, K. Sugama, B. Sumiono (2019). Java Island. In World Seas: An Environmental Evaluation (ed. C. Sheppard), Vol. 2, Elsevier, 459-490.

Schlüter, S. Partelow, L.E. Torres-Guevara, T.C. Jennerjahn (2019). Coastal commons as social-ecological systems. In Handbook of the Study of the Commons (eds. B. Hudson, J. Rosenbloom, D. Cole), Routledge, New York, 170-187.

Hapsari, K.A., S. Biagioni, T.C. Jennerjahn, P. Reimer, A. Saad, S. Sabiham, H. Behling (2018). Resilience of a peatland in Central Sumatra, Indonesia to past anthropogenic disturbance: improving conservation and restoration designs using palaeoecology. Journal of Ecology 106: 2473-2490. DOI: 10.1111/1365-2745.13000

Kegler, H.F., P. Kegler, T.C. Jennerjahn, M. Lukman, C. Hassenrück, J. Jompa, A. Gärdes (2018). Small tropical islands with dense human population: Differences in physicochemical properties and biogeochemical composition of coastal waters result in distinct bacterial communities. PeerJ 6:e4555; DOI 10.7717/peerj.4555.

Jennerjahn, T.C., E. Gilman, K.W. Krauss, L.D. Lacerda, I. Nordhaus, E. Wolanski (2017). Chapter 7: Mangrove ecosystems under climate change. In 'Mangrove Ecosystems: A Global Biogeographic Perspective Structure, Function and Services' (eds. V. Rivera-Monroy, S.Y. Lee, E. Kristensen, R.R. Twilley). Springer Publishing Company, New York, 211-244.

Mohtadi, M., M. Prange, E. Schefuß, T.C. Jennerjahn (2017). Late Holocene slowdown of the Indian Ocean Walker circulation. Nature Communications. DOI: 10.1038/s41467-017-00855-3

Hapsari, K.A., S. Biagioni, T.C. Jennerjahn, P. Meyer Reimer, A. Saad, Y. Achnopha, S. Sabiham, H. Behling (2017). Environmental dynamics and carbon accumulation rate of a tropical peatland in Central Sumatra, Indonesia. Quaternary Science Reviews 169: 173-187. doi:10.1016/j.quascirev.2017.05.026

Nordhaus, I., T. Salewski, T.C. Jennerjahn (2017). Interspecific variations in mangrove leaf litter decomposition are related to labile nitrogenous compounds. Estuarine, Coastal and Shelf Science 192: 137-148. doi:10.1016/jecss.2017.04.029

Poliakova, A., K.A.F. Zonneveld, L. Herbeck, T.C. Jennerjahn, Haryadi Permana, C. Kwiatkowski, H. Behling (2017). High resolution multi-proxy reconstruction of environmental changes in coastal waters of the Java Sea, Indonesia, during the late Holocene. Palynology, 41: 297-310. doi:10.1080/01916122.2016.1162865

Contreras-Rosales, L.A., E. Schefuß, V. Meyer, L. Palamenghi, A. Lückge, T.C. Jennerjahn (2016). Origin and fate of sedimentary organic matter in the northern Bay of Bengal during the last 18 ka. Global and Planetary Change 146: 53-66. doi:10.1016/j.gloplacha.2016.09.008

Kumaran, N.K.P., D. Padmalal, R.B. Limaye, S. Vishnu Mohan, T. Jennerjahn, P.G. Gamre (2016). Tropical peat and peatland development in the floodplains of the Greater Pamba Basin, South-western India during the Holocene. PLOS ONE, doi:10.1371/journal.pone.0154297

Mitchell, S.B., T.C. Jennerjahn, S. Vizzini & W. Zhang (2015). Changes to processes in estuaries and coastal waters due to intense multiple pressures – an introduction and synthesis. In Changes to processes in estuaries and coastal waters due to intense multiple pressures, (eds. S.B. MITCHELL, T.C. JENNERJAHN, S. VIZZINI & W. ZHANG), special issue, Estuarine Coastal and Shelf Science 156: 1-6. doi:10.1016/j.ecss.2014.12.027

Contreras-Rosales, L.A., T. Jennerjahn, T. Tharammal, V. Meyer, A. Paul, A. Lückge & E. Schefuß (2014). Evolution of the Indian Summer Monsoon and terrestrial vegetation in the Bengal region during the past 18 ka. Quaternary Science Reviews 102: 133-148.

Poliakova, A., T. Rixen, T. Jennerjahn & H. Behling (2014). Eleven Month High Resolution Pollen and Spore Sedimentation Record off SW Java in the Indian Ocean. Marine Micropaleontology 111: 90-99. doi:10.1016/j.marmicro.2014.06.006

Herbeck, L.S., M. Sollich, D. Unger, M. Holmer & T.C. Jennerjahn (2014). Impact of pond aquaculture effluents on seagrass performance in NE Hainan, tropical China. Marine Pollution Bulletin 85: 190-203. DOI:10.1016/j.marpolbul.2014.05.050

Jennerjahn, T.C. & S.B. Mitchell (2013). Pressures, stresses, shocks and trends in estuarine ecosystems – an introduction and synthesis. In Pressure, stresses, shocks and trends in estuarine ecosystems, (eds. T.C. Jennerjahn & S. Mitchell), special issue, Estuarine Coastal and Shelf Science130: 1-8. doi.org/10.1016/j.ecss.2013.07.008.

Jennerjahn, T.C., I. Jänen, C. Propp, Seno Adi & Sutopo Purwo Nugroho (2013). Environmental impact of mud volcano inputs on the anthropogenically altered Porong River and Madura Strait coastal waters, Java, Indonesia. In Pressure, stresses, shocks and trends in estuarine ecosystems, (eds. T.C. Jennerjahn & S. Mitchell), special issue, Estuarine Coastal and Shelf Science 130: 152-160. doi.org/10.1016/j.ecss.2013.04.007

Santos, E.S., T. Jennerjahn, T. Leipe, P.R.P. Medeiros, W.F.L. Souza, B.A. Knoppers (2013). Origin of organic matter in the sediments of the estuarine-delta São Francisco River (in Portuguese). Geochimica Brasiliensis 27: 37-48.

Jennerjahn, T.C., Seno Adi & F. Schroeder (2013). Editorial – Human activities and natural disasters affecting water quality and ecology of the Brantas River and Madura Strait coastal waters, Java, Indonesia. In Environmental change affecting the Brantas River and Madura Strait coastal zone, Java, Indonesia, (eds. T.C. Jennerjahn, Seno Adi & F. Schroeder), special issue, Asian Journal of Water, Environment and Pollution 10: 1-3.

Adi, S., I. Jänen & T.C. Jennerjahn (2013). History of development and attendant environmental changes in the Brantas River basin, Java, Indonesia, since 1970. In Environmental change affecting the Brantas River and Madura Strait coastal zone, Java, Indonesia, (eds. T.C. Jennerjahn, Seno Adi & F. Schroeder), special issue, Asian Journal of Water, Environment and Pollution 10: 5-15.

Jennerjahn, T.C. & S. Klöpper (2013). Does high silicate supply control phytoplankton and particulate organic matter composition in two eutrophied reservoirs in the Brantas River catchment, Java, Indonesia? In Environmental change affecting the Brantas River and Madura Strait coastal zone, Java, Indonesia, (eds. T.C. Jennerjahn, Seno Adi & F. Schroeder), special issue, Asian Journal of Water, Environment and Pollution 10: 41-53.

Jänen, I., Seno Adi & T.C. Jennerjahn (2013). Spatio-temporal variations in nutrient supply of the Brantas River to Madura Strait coastal waters, Java, Indonesia, related to human alterations in the catchment and a mud volcano. In Environmental change affecting the Brantas River and Madura Strait coastal zone, Java, Indonesia, (eds. T.C. Jennerjahn, Seno Adi & F. Schroeder), special issue, Asian Journal of Water, Environment and Pollution 10: 73-93.

Propp, C., I. Jänen & T. Jennerjahn (2013). Sources and degradation of sedimentary organic matter in coastal waters off the Brantas River estuary, Java, Indonesia. In Environmental change affecting the Brantas River and Madura Strait coastal zone, Java, Indonesia, (eds. T.C. Jennerjahn, Seno Adi & F. Schroeder), special issue, Asian Journal of Water, Environment and Pollution 10: 95-115.

Zhang, J., D.R. Wang, T. Jennerjahn & L. Dsikowitzky (2013). Land-Sea Interactions at the East Coast of Hainan Island, South China Sea: A Synthesis. In Land – Sea Interactions in Tropical Ecosystems of Hainan, China, (eds. T.C. Jennerjahn, J. Zhang, D.R. Wang & L. Dsikowitzky), special issue, Continental Shelf Research, in press. doi.org/10.1016/j.csr.2013.01.004.

Jennerjahn, T.C., L. Dsikowitzky, J. Zhang & D.R. Wang (2012). Editorial - Land–Sea Interactions in Tropical Ecosystems of Hainan, China. In Land – Sea Interactions in Tropical Ecosystems of Hainan, China, (eds. T.C. Jennerjahn, J. Zhang, D.R. Wang & L. Dsikowitzky), special issue, Continental Shelf Research, in press. doi.org/10.1016/j.csr.2012.11.013.

Wu, Y., H. Bao, D. Unger, L.S. Herbeck, Z. Zhu, J. Zhang & T.C. Jennerjahn (2012). Biogeochemical behavior of organic carbon in a small tropical river and estuary, Hainan, China. In Land – Sea Interactions in Tropical Ecosystems of Hainan, China, (eds. T.C. Jennerjahn, J. Zhang, D.R. Wang & L. Dsikowitzky), special issue, Continental Shelf Research, in press. doi.org/10.1016/j.csr.2012.07.017

Herbeck, L.S., D. Unger, Y. Wu & T.C. Jennerjahn (2012). Effluent, nutrient and organic matter export from shrimp and fish ponds causing eutrophication in coastal and back-reef waters of NE Hainan, tropical China. In Land – Sea Interactions in Tropical Ecosystems of Hainan, China, (eds. T.C. Jennerjahn, J. Zhang, D.R. Wang & L. Dsikowitzky), special issue, Continental Shelf Research, in press. doi:10.1016/j.csr.2012.05.006

Jennerjahn, T.C. (2012). Biogeochemical response of tropical coastal systems to present and past environmental change. Earth Science Reviews 114: 19-41. doi.org/10.1016/j.earscirev.2012.04.005.

Unger, D., L. Herbeck, M. Li, H. Bao, Y. Wu, J. Zhang & T. Jennerjahn (2012). Sources, transformation and fate of particulate amino acids and hexosamines under varying hydrological regimes in the tropical Wenchang/Wenjiao Rivers and estuary, Hainan, China. In Land – Sea Interactions in Tropical Ecosystems of Hainan, China, (eds. T.C. Jennerjahn, J. Zhang, D.R. Wang & L. Dsikowitzky), special issue, Continental Shelf Research, doi:10.1016/j.csr.2012.02.014.

Herbeck, L.S., D. Unger, U. Krumme, S.M. Liu & T. Jennerjahn (2011). Typhoon-induced precipitation impact on nutrient and suspended matter dynamics of a tropical estuary affected by human activities in Hainan, China. Estuarine Coastal and Shelf Science 93: 375-388.

Nordhaus, I., T. Salewski & T.C. Jennerjahn (2011). Food preferences of mangrove crabs related to leaf nitrogen compounds in the Segara Anakan Lagoon, Java, Indonesia. Journal of Sea Research 65: 414-426.

Dsikowitzky, L., I. Nordhaus, T. Jennerjahn, P. Khrycheva, Y. Sivatharshan, E. Yuwono & J. Schwarzbauer (2011). Anthropogenic organic contaminants in water, sediments and benthic organisms of the mangrove-fringed Segara Anakan Lagoon, Java, Indonesia. Marine Pollution Bulletin 62: 851-862.

Baumgart, A., T. Jennerjahn, M. Mohtadi & D. Hebbeln (2010). Distribution and burial of organic carbon in sediments from the Indian Ocean upwelling region off Java and Sumatra, Indonesia. Deep-Sea Res. 57: 458-467.

Dupont, L.M., F. Schlütz, C.T. Ewah, T.C. Jennerjahn, A. Paul & H. Behling (2010). Two-step vegetation response to enhanced precipitation in Northeast Brazil during Heinrich Event 1. Tropical Paleoecology & Climate Change, (eds. S. Haberle, H. Behling, L. Dupont & W. Kirleis), special issue, Global Change Biology 16: 1647-1660.

Jennerjahn, T.C., B. Knoppers, W.F.L. de Souza, C.E.V. Carvalho, G. Mollenhauer, M. Hübner & V. Ittekkot (2010). Factors controlling the production and accumulation of organic matter along the Brazilian continental margin between the equator and 22°S.- In Carbon and Nutrient Fluxes in Continental Margins: A Global Synthesis, (eds. K.K. Liu, R. Quinones, L. Talaue-Mcmanus & L. Atkinson). CMTT/IGBP, Springer Publishing Company, New York, 427-442.

Holtermann, P., H. Burchard & T.C. Jennerjahn (2009). Hydrodynamics of the Segara Anakan Lagoon. In Segara Anakan, Java, Indonesia, a mangrove-fringed coastal lagoon affected by human activities, (eds. T.C. Jennerjahn & Edy Yuwono), special issue, Regional Environmental Change 9: 245-258. DOI 10.1007/s10113-008-0075-3.

Jennerjahn, T.C. & Edy Yuwono (2009). Editorial. In Segara Anakan, Java, Indonesia, a mangrove-fringed coastal lagoon affected by human activities, (eds. T.C. Jennerjahn & Edy Yuwono), special issue, Regional Environmental Change 9: 231-233. DOI 10.1007/s10113-009-0089-5.

Jennerjahn, T.C., B. Nasir & I. Pohlenga (2009). Spatio-temporal variation of dissolved inorganic nutrients in the Segara Anakan Lagoon, Java, Indonesia. In Segara Anakan, Java, Indonesia, a mangrove-fringed coastal lagoon affected by human activities, (eds. T.C. Jennerjahn & Edy Yuwono), special issue, Regional Environmental Change 9: 259-274. DOI 10.1007/s10113-008-0077-1.

Gomani, M.C., T. Jennerjahn & E. Kaunda (2009). Biogeochemistry of mid-sized tropical river, Linthipe, Malawi. Effects of human activities on biogeochemistry of Linthipe River, southern Lake Malawi basin. VDM Verlag Dr. Müller, Saarbrücken, 92 pp.

Jennerjahn, T.C., K. Soman, V. Ittekkot, I. Nordhaus, S. Sooraj, Priya R.S. & N. Lahajnar (2008). Effect of land use on the biogeochemistry of dissolved nutrients and suspended and sedimentary organic matter in the tropical Kallada River and Ashtamudi estuary, Kerala, India. Biogeochemistry 90: 29-47.

Muller, J., M. Kylander, R.A.J. Wüst, D. Weiss, A. Martinez-Cortizas, A.N. LeGrande, T. Jennerjahn, H. Behling, W.T. Anderson & G. Jacobson (2008). Possible evidence for wet Heinrich phases in tropical NE Australia: The Lynch’s Crater deposit. Quaternary Science Reviews 27: 468-475.

Alkhatib, M., T.C. Jennerjahn & Joko Samiaji (2007). Biogeochemistry of the Dumai River estuary, Sumatra, Indonesia, a tropical blackwater river. Limnol. Oceanogr. 52: 2410-2417.

Mohtadi, M., L. Max, D. Hebbeln, A. Baumgart, N. Krück & T. Jennerjahn (2007) Modern environmental conditions recorded in surface sediment samples off W and SW Indonesia: Planktonic foraminifera and biogenic compounds analyses. Mar. Micropaleontol. 65: 96-112.

Zhang, J., Y. Wu, T.C. Jennerjahn, V. Ittekkot & Q. He (2007) Distribution of organic matter in the Changjiang (Yangtze River) Estuary and their stable carbon and nitrogen isotopic rations: Implications for source discrimination and sedimentary dynamics. Mar. Chem. 106: 111-126.

Edy Yuwono, T.C. Jennerjahn, I. Nordhaus, Erwin Ardli Riyanto, M. Husein Sastranegara, Rudhi Pribadi (2007) Ecological status of Segara Anakan, Java, Indonesia, a mangrove-fringed lagoon affected by human activities. Asian Journal of Water, Environment and Pollution 4: 61-70.

Silva, E.I.L., T.C. Jennerjahn & V. Ittekkot (2005). Nutrient fluxes into coastal waters via Sri Lankan rivers: a comparison with other Asian rivers.- International Journal of Ecology and Environmental Sciences 31: 213-221.

Jennerjahn, T.C., V. Ittekkot, H.W. Arz, H. Behling, J. Pätzold & G. Wefer (2004). Asynchronous terrestrial and marine signals of climate change during Heinrich events.- Science 306: 2236-2239.

Jennerjahn, T.C.,V. Ittekkot, S. Klöpper, Seno Adi, Sutopo Purwo Nugroho, Nana Sudiana, Anyuta Yusmal, Prihartanto & B. Gaye-Haake (2004). Biogeochemistry of a tropical river affected by human activities in its catchment: Brantas River estuary and coastal waters of Madura Strait, Java, Indonesia.- Estuar. Coast. Shelf Sci., 60: 503-514.

Koppelmann, R., H. Weikert, C. Halsband-Lenk & T. Jennerjahn (2004). Mesozooplankton community respiration and its relation to particle flux in the oligotrophic Eastern Mediterranean.- Glob. Biogeochem. Cycles 18, GB 1039, doi:10.1029/2003GB002121.

Mollenhauer, G., R.R. Schneider, T. Jennerjahn, P.J. Müller & G. Wefer (2004). Organic carbon accumulation in the South Atlantic Ocean: its modern, mid-Holocene and last glacial distribution.- Glob. Planet. Change 40: 249-266.

Jennerjahn, T.C. & V. Ittekkot (2002). Relevance of mangroves for the production and deposition of organic matter along tropical continental margins.- Naturwissenschaften 89: 23-30.

Suthhof, A., T.C. Jennerjahn, P. Schäfer & V. Ittekkot (2000). Nature of organic matter in surface sediments from the Pakistan continental margin and the deep Arabian Sea: Amino acids.- Deep-Sea Res. II 47 (1-2): 329-351.

Ovalle, A.R.C., C.E. Rezende, C.E.V. Carvalho, T.C. Jennerjahn & V. Ittekkot (1999). Biogeochemical characteristics of coastal waters adjacent to small river-mangrove systems, East Brazil.- In Sedimentation process at the East and Northeast Brazil Shelf, (eds. B. Knoppers & W. Ekau), Geo-Mar. Lett. 19 (3): 179-185

Jennerjahn, T.C., V. Ittekkot, C.E.V. Carvalho, A.R.C. Ovalle, C.E. Rezende & H. Erlenkeuser (1999). Temporal variability of amino acid, hexosamine and carbohydrate fluxes on the eastern Brazilian continental margin related to discharge of the São Francisco River, Brazil.- In Sedimentation process at the East and Northeast Brazil Shelf, (eds. B. Knoppers & W. Ekau), Geo-Mar. Lett. 19 (3): 202-208.

Jennerjahn, T.C., V. Ittekkot, C.E.V. Carvalho, A.R.C. Ovalle, C.E. Rezende & H. Erlenkeuser (1999). Temporal variability of amino acid, hexosamine and carbohydrate fluxes on the eastern Brazilian continental margin related to discharge of the São Francisco River, Brazil.- In Sedimentation process at the East and Northeast Brazil Shelf, (eds. B. Knoppers & W. Ekau), Geo-Mar. Lett. 19 (3): 202-208.

Chen, J., L. Xu, L. Zheng, H.-K. Wong & T. Jennerjahn (1998). Organic geochemical characteristics of time-series settling particles in northern South China Sea and their implications.- Chin. J. Geochem. 17: 275-283.

Jennerjahn, T.C. & V. Ittekkot (1997). Organic matter in sediments in the mangrove areas and adjacent continental margins of Brazil: I. Amino acids and hexosamines.- Oceanologica Acta, Vol. 20, No. 2: 359-369.

Von Rad, U., H. Schulz & SONNE 90 Scientific Party* (1995). Sampling the oxygen minimum zone off Pakistan: glacial-interglacial variations of anoxia and productivity (preliminary results, SONNE 90 cruise).- Mar. Geol. 125: 7-19.
* A. Ali Khan, M. Ansari, U. Berner, P. Cepek, G. Cowie, P. Dietrich, H. Erlenkeuser, M. Geyh, T. Jennerjahn, A. Lückge, V. Marchig, V. Riech, H. Rösch, P. Schäfer, S. Schulte, F. Sirocko, M. Tahir & W. Weiss.

Jennerjahn, T.C., G. Liebezeit, S. Kempe, L.Q. Xu, W.B. Chen & H.K. Wong (1992). Particle flux in the northern South China Sea.- In Marine Geology and Geophysics of the South China Sea (eds. J. Xianglong, H.R. Kudrass & G. Pautot), China Ocean Press: 228-235.

Cook, P.J., B.U. Haq, G.R. Heath, J.L. Hyland, T.C. Jennerjahn, C.S. Johnston, J.M. Skei, C.P. Summerhayes & P.K. Takahashi (1992). Group report: Offshore petroleum hydrocarbon exploitation - reserves, impacts, and alternatives.- In Use and Misuse of the Seafloor (eds. K.J. Hsü & J. Thiede), Dahlem Workshop Reports, Environmental Sciences Research Report 11, Wiley & Sons, Chichester: 337-356.

Kempe, S. & T.C. Jennerjahn (1988). The vertical particle flux in the northern North Sea, its seasonality and composition.- In Biogeochemistry and Distribution of Suspended Matter in the North Sea and Implications to Fisheries Biology (eds. S. Kempe, G. Liebezeit, V. Dethlefsen & U. Harms), Mitt. Geol.-Paläontol. Inst. Univ. Hamburg 65: 229-268.

 

Books

Vincent, S.G.T., T. Jennerjahn, K. Ramasamy (2021). Microbial Communities in Coastal Sediments: Structure and Functions. Elsevier, Amsterdam, 208 p.

Jennerjahn, T.C. (2020). Relevance of allochthonous input from an agriculture-dominated hinterland for 'Blue Carbon' storage in mangrove sediments in Java, Indonesia. In Dynamic Sedimentary Environments of Mangrove Coasts (eds. F. Sidik, D.E. Friess), Elsevier, 393-414.

Schlüter, S. Partelow, L.E. Torres-Guevara, T.C. Jennerjahn (2019). Coastal Commons as social-ecological systems. In Handbook of the Study of the Commons (eds. B. Hudson, J. Rosenbloom, D. Cole), Routledge, New York, 170-187.

Dsikowitzky, L., A. Damar, S. Ferse, H.E. Irianto, T.C. Jennerjahn, M.C. Lukas, I. Nordhaus, T. Pohlmann, J. Schwarzbauer, K. Sugama, B. Sumiono (2019). Java Island. In World Seas: An Environmental Evaluation (ed. C. Sheppard), Vol. 2, Elsevier, 459-490.

Auel, H., T.C. Jennerjahn & J. Salita (2009). Tropical aquatic ecosystems – from large to small. In Tropical Waters and their Living Resources: Ecology, Assessment and Management, (ed. M. Wolff), Hauschild, Bremen, p. 25-45.

Unger, D. & T. Jennerjahn (2009). Regional variability in the biogeochemistry of settling particles in the tropical Indian Ocean.- In Indian Ocean Biogeochemical Processes and Ecological Variability, (eds. J. Wiggert, S.W.A. Naqvi, S. Smith & R.R. Hood), American Geophysical Union, Washington DC, 257-280.

Jennerjahn, T.C. (2009). Natural vs. human factors controlling dissolved and particulate river loads of tropical Asia. In Critical States: Environmental Challenges of Development in Monsoon Southeast Asia, (eds. L. Lebel, A. Snidvongs, C.-T.A. Chen). A Joint APN-START-MAIRS Assessment Report. Gerakbudaya, Kuala Lumpur, p. 281-291.

Jennerjahn, T.C. (2008). Global climate and regional environmental change affecting coastal ecosystems: 1. Biogeochemistry during Anthropocene. In Coastal Ecosystems – Hazards, Management and Rehabilitation, (ed. R.K. Datta). Centre for Science & Technology of the Non-Aligned And Other Developing Countries (NAM S&T Centre), Daya Publishing House, Delhi, p. 64-77.

Knoppers, B., P.R.P. Medeiros, W.F.L. de Souza & T. Jennerjahn (2006). The São Francisco Estuary, Brazil. In Water Pollution in Estuaries. Handbook of Environmental Chemistry, Vol. 5., P.Wangersky (Ed.), Springer Verlag, Berlin, p. 51-70.

Jennerjahn, T.C., B.A. Knoppers, W.F.L. de Souza, G.J. Brunskill & E.I.L. Silva (2006). Factors controlling dissolved silica in tropical rivers.- In The Silicon Cycle. Human Perturbations and Impacts on Aquatic Systems., (eds. V. Ittekkot, D. Unger, C. Humborg & N. Tac An), SCOPE 66, Island Press, Washington D.C., p. 29-51.

Das, B.K., P. Schäfer & T.C. Jennerjahn (1999). Biogeochemical studies in lesser Himalayan lakes of Jammu District, India.- SCOPE Sonderband, Mitt. Geol.-Paläont. Inst. Univ. Hamburg 82: 245-253.

Jennerjahn, T.C., V. Ittekkot & C.E.V. Carvalho (1996). Preliminary data on particle flux off the São Francisco River, Eastern Brazil.- In Particle Flux in the Ocean (eds. V. Ittekkot, P. Schäfer, S. Honjo & P.J. Depetris), SCOPE Report 57, Wiley, Chichester: 215-222.

Jennerjahn, T.C., G. Liebezeit, S. Kempe, L.Q. Xu, W.B. Chen & H.K. Wong (1992). Particle flux in the northern South China Sea.- In Marine Geology and Geophysics of the South China Sea (eds. J. Xianglong, H.R. Kudrass & G. Pautot), China Ocean Press: 228-235.

Cook, P.J., B.U. Haq, G.R. Heath, J.L. Hyland, T.C. Jennerjahn, C.S. Johnston, J.M. Skei, C.P. Summerhayes & P.K. Takahashi (1992). Group report: Offshore petroleum hydrocarbon exploitation - reserves, impacts, and alternatives.- In Use and Misuse of the Seafloor (eds. K.J. Hsü & J. Thiede), Dahlem Workshop Reports, Environmental Sciences Research Report 11, Wiley & Sons, Chichester: 337-356.

Kempe, S. & T.C. Jennerjahn (1988). The vertical particle flux in the northern North Sea, its seasonality and composition.- In Biogeochemistry and Distribution of Suspended Matter in the North Sea and Implications to Fisheries Biology (eds. S. Kempe, G. Liebezeit, V. Dethlefsen & U. Harms), Mitt. Geol.-Paläontol. Inst. Univ. Hamburg 65: 229-268.

 

 

General Publications

Hapsari, K.A., T.C. Jennerjahn, H. Behling (2022). The future of the past: Applications of paleoecological findings in peatland restoration in Indonesia. PAGES Magazine 30(1). https://doi.org/10.22498/pages.30.1.10.14

Jennerjahn, T. & E. Krain (2005). Natürlicher Schutz vor Tsunamis - das deutsch-indo¬nesische SPICE-Programm. E.velop - Das Entwicklungsmagazin der Bundesregierung, online-Publikation, Nr. 29, 04/2005

Eickhoff, S., V. Ittekkot & T. Jennerjahn (2004). Der gestörte Siliziumkreislauf.- Forschung – Das Magazin der Deutschen Forschungsgemeinschaft, Okt. 2004.

Eickhoff, S. & T. Jennerjahn (2003). Nachhaltiges Küstenmanagement in Asien - ein internationales Forschungsnetzwerk ergreift gezielte Maßnahmen.- e.velop – Das Entwicklungsmagazin der Bundesregierung, online-Publikation, Nr. 13, 09/2003.

Jennerjahn, T.C. & S. Kempe (1991). Tschernobyl in der Nordsee - Schwebstoffe schreiben die Atomkatastrophe in das Geschichtsbuch der Erde.- In Kurs Nord - Meeresforschung mit Valdivia (ed. H. Thiel), Westholsteinische Verlagsanstalt Boyens & Co., Heide: 31-36.

 

University teaching

"Marine Biogeochemistry", Lectures, M.Sc. Marine Biology, Faculty of Biology and Chemistry, University of Bremen

"Biogeochemical cycling of elements in the aquatic environment", Lectures and lab practicals, M.Sc. ISATEC, Faculty of Biology and Chemistry, University of Bremen

"Chemical-biological oceanography" (in German), Lectures and practicals, B.Sc. Geosciences, Faculty of Geosciences, University of Bremen

"Aquatic pollution" (with C. Carvalho, L. Dsikowitzky), M.Sc., Bogor Agricultural University, Indonesia (semester abroad)

"Macroscopic rock identification" (in German, together with G. Bohrmann), M.Ed., Faculty of Geosciences, University of Bremen

"Biogeochemistry of mangroves: highly productive ecosystems of the tropics", Lectures, Diploma (cf. M.Sc.) Geology-Paleontology, University of Hamburg