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Dr. Ulrike Holzwarth
Name: | Dr. Ulrike Holzwarth | |
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Department: | Marine Geology / Micropaleontology | |
Job: | Associate Scientist | |
Room: | ||
Phone: | +49 421 218 - 65537 | |
Fax: | +49 421 218 - 65515 | |
E-Mail: |
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Research interests
- Organic-walled dinoflagellate cysts
- Upwelling regions (Benguela and North West Africa)
- Marine productivity
- Paleoceanography and climate reconstructions
CV
| since 2009 | Associate Scientist within GLOMAR |
| 2001 - 2009 | PhD student at marum within project A1.1, University of Bremen (2004 - 2006: maternity and parental leave) |
| 2000 - 2001 | Scientific giude for visitors, animal keeper and terrarium constructor at the Universum Science Center Bremen |
| 2000 | Degree: diploma Thesis title: Planktonic foraminifera in surface waters of the upwelling region of the Humboldt current |
| 1995 - 2000 | Graduate school at the University of Bremen, Germany; main fields of study: marine biology, ecology and geology |
| 1992 - 1995 | Undergraduate school at the University of Hohenheim, Germany |
Publications
Govin, A., U. Holzwarth, D. Heslop, L. Ford Keeling, M. Zabel, S. Mulitza, J. A. Collins, and C. M. Chiessi, Distribution of major element ratios in Atlantic surface sediments (36°N-49°S): imprint of terrigenous input and continental weathering, Geochemistry Geophysics Geosystems, In Press, doi:10.1029/2011GC003785.
Holzwarth, U., Meggers, H., Esper, O., Kuhlmann, H., Freudental, T., Hensen, C., Zonneveld, K.A.F., 2010. NW African climate variations during the last 47,000 years: Evidence from organic-walled dinoflagellate cysts. Palaeogeography, Palaeoclimatology, Palaeoecology 291, 3-4: 443-455. link to pdf
Holzwarth, U., Esper, O. and Zonneveld, K. A. F., 2010. Organic-walled dinoflagellate cysts as indicators of oceanographic conditions and terrigenous input in the North-West African upwelling region. Review of Paleobotany and Palynology 159, 1-2: 35-55. link to pdf
Holzwarth, U., 2009. Characterization of West African upwelling areas based on organic-walled dinoflagellate cysts and their application in the fossil record. Ph.D. thesis, University of Bremen. 229 pp. link to pdf
Mertens, K. , Ribeiro, S., Bouimetarhan, I., Caner, H., Combourieu-Nebout, N., Dale, B., de Vernal, A., Ellegaard, M., Filipova, M., Godhe, A., Grøsfjeld, K., Holzwarth, U., Kotthoff, U., Leroy, S., Londeix, L., Marret, F., Matsuoka, K., Mudie, P., Naudts, L., Peña-Manjarrez, J., Persson, A., Popescu, S., Sangiorgi, F., van der Meer, M., Vink, A., Zonneveld, K.A.F., Vercauteren, D., Vlassenbroeck, J. and Louwye, S., 2009. Lingulodinium machaerophorum process length variation in surface sediments. Marine Micropaleontology 70, 1-2: 54-69. link to pdf
Holzwarth, U., Esper, O. & Zonneveld, K. A. F., 2007. Distribution of organic-walled dinoflagellate cysts in surface sediments of the Benguela upwelling system and their relationship to environmental conditions. Marine Micropalaeontology 64: 91-119. link to pdf
Zonneveld, K. A. F., Bockelmann, F., Holzwarth, U., 2007. Selective preservation of organic-walled dinoflagellate cysts as a tool to quantify past net primary production and bottom water oxygen concentrations. Marine Geology 237: 109-126. link to pdf
Holzwarth, U., 2003. Dinoflagellate cyst investigations. In: Zabel and cruise participants, Report and preliminary results of Meteor Cruise M57/2, Walvis Bay - Walvis Bay, 11.02.-12.03.2003, Ber. Fachber. Geowiss. Univ. Bremen, 200, 136 pp. link to pdf
Conferences
2010 International Conference on Paleoceanography (ICP10) La Jolla, California
2010
ECOLMAS workshop: (Palaeo-) ecology of cyst forming dinoflagellates, Bremen, Deutschland
Holzwarth, U., Meggers, H., Esper, O., Kuhlmann, H., Freudental, T., Hensen, C., Zonneveld, K.A.F., (2010)
Why dinocyst accumulation rates matter: a paleoreconstruction from NW Africa.
2006
Workshop on dinoflagellates and their cysts, GEUS, Kopenhagen, Dänemark
Holzwarth, U., Esper, O. & Zonneveld, K. A. F. (2006): Distribution of organic-walled dinoflagellate cysts in surface sediments of the Benguela upwelling system and their relationship to environmental conditions.
http://www.geus.dk/departments/quaternary-marine-geol/research-themes/geus_rap_2006_78.pdf
2005
Holzwarth, U., Esper, O., Zonneveld, K. A. F. & Willems, H. (2005): Spatial distribution of organic-walled dinoflagellate cysts in surface sediments of the Benguela upwelling system and their relationship to environmental parameters. (AGU Fall Meeting, 2005)
2003
DINO 7, 7th International Conference on Modern and Fossil Dinoflagellates; Nagasaki, Japan
Holzwarth, U., Esper, O., Zonneveld, K. & Willems, H. (2003): Spatial distribution of organic-walled dinoflagellate cysts in surface sediments of the Benguela upwelling system and their relationship to environmental parameters.
2002
4. Interdisziplinäre Dinoflagellaten-Tagung, Helgoland, Deutschland
Holzwarth U., Siggelkow D., Esper O., Vink A., Zonneveld, K. A. F. und Willems, H. (2002): Kalkige und organisch-wandige Dinoflagellatenzysten in Oberflächensedimenten vor Nordwestafrika.
2010
ECOLMAS workshop: (Palaeo-) ecology of cyst forming dinoflagellates, Bremen, Deutschland
Holzwarth, U., Meggers, H., Esper, O., Kuhlmann, H., Freudental, T., Hensen, C., Zonneveld, K.A.F., (2010)
Why dinocyst accumulation rates matter: a paleoreconstruction from NW Africa.
2006
Workshop on dinoflagellates and their cysts, GEUS, Kopenhagen, Dänemark
Holzwarth, U., Esper, O. & Zonneveld, K. A. F. (2006): Distribution of organic-walled dinoflagellate cysts in surface sediments of the Benguela upwelling system and their relationship to environmental conditions.
http://www.geus.dk/departments/quaternary-marine-geol/research-themes/geus_rap_2006_78.pdf
2003
DINO 7, 7th International Conference on Modern and Fossil Dinoflagellates; Nagasaki, Japan
Holzwarth, U., Esper, O., Zonneveld, K. & Willems, H. (2003): Spatial distribution of organic-walled dinoflagellate cysts in surface sediments of the Benguela upwelling system and their relationship to environmental parameters.
2002
4. Interdisziplinäre Dinoflagellaten-Tagung, Helgoland, Deutschland
Holzwarth U., Siggelkow D., Esper O., Vink A., Zonneveld, K. A. F. und Willems, H. (2002): Kalkige und organisch-wandige Dinoflagellatenzysten in Oberflächensedimenten vor Nordwestafrika.
Research cruises
FS POSEIDON P339 Piraeus – Messina (16.6.-3.7.2006). Calabrian and Adriatic palaeo-productivity and climatic variability in the last two millennia
FS METEOR M57/2 Walvis Bay – Walvis Bay (11.2.-12.3.2003). Sedimentation processes off the Namibian continental slope – Preservation of organic-walled dinoflagellate cysts in low oxygen sediments
FS VICTOR HENSEN UV III Bremerhaven – Helgoland – Bremerhaven (11.-22.6.1996). Reaction of phytoplankton to enhanced UV-radiation – Experiments in the sunshine-simulator