Jens Floeter (Dr.)

Phone: +49(0)40 - 42838 6611
Fax: +49(0)40 - 42838 6618
University of Hamburg
Institute for Hydrobiology and Fisheries Science
Olbersweg 24
22765 Hamburg
Germany

Research interests

- Higher trophic level food web dynamics
- Multi species fisheries assessment
- Coupling of spatio-temporal scales

Educational Background

University education

2005: Promotion

Dissertation: "An investigation of key processes affecting trophic interactions in the North Sea fish assemblage and their significance for multi species fisheries assessment". Universität Hamburg, Institut für Hydrobiologie & Fischereiwissenschaft

1998: Diplom der Biologie Thema der Diplomarbeit: "Analyse und Modellierung der Nahrungsselektion von Nordseefischen“.

1991: Studium Biologie, Universität Hamburg.

Employment

11/2008 - ongoing: Wissenschaftlicher Mitarbeiter IHF, AG Fisheries Science, Prof. Dr. C. Möllmann

10/ 2007 – 11/2008: Leiter der Arbeitsgruppe Fischereitechnik, Johann Heinrich von Thünen-Institut (vTI), Bundesforschungsinstitut für Ländliche Räume, Wald und Fischerei, Institut für Ostseefischerei, Palmaille 9, 22767 Hamburg

03/ 2007 - 09/ 2007: Wissenschaftlicher Mitarbeiter & Work Package 3 Leiter im EU -Projekt: "UNderstanding the Mechanisms of Stock ReCOVERy" (UNCOVER) Contract no.: 022717.

03/ 2004 – 02/ 2007: Wissenschaftlicher Mitarbeiter & Assistent des Koordinators im EU -Projekt: “Critical Interactions BEtween Species and their Implications for a PreCAUtionary FiSheries Management in a variable Environment - a Modelling Approach” (BECAUSE), Contract no.: 502482.

01/ 2001 - 02/ 2004: Wissenschaftlicher Mitarbeiter & Work Package 6 Leiter im EU -Projekt: “Linking hydrographic Frontal activity and ECOsystem dynamics in the North Sea & Skagerrak: Impact on fish stock recruitment” (LIFECO). Contract no.: Q5RS-2000-30183.

01/ 1999 - 8/ 2000: Wissenschaftlicher Mitarbeiter im BMBFT -Projekt "Synthesis of North Sea research and development of a new research strategy" (SYCON).

Publications

Research articles (peer-reviewed)

Gårdmark, A., Nielsen, A., Floeter, J., Möllmann, C. (2010): Depleted marine fish stocks and ecosystem-based management: on the road to recovery we need to be precautionary. ICES Journal of Marine Science, accepted

Kempf, Alexander, Dingsør, Gjert Endre, Huse, Geir, Vinther, Morten, Floeter, J., and Temming, Axel (2010): The importance of predator - prey overlap: predicting North Sea cod recovery with a multispecies assessment model. ICES Journal of Marine Science, 67 (9), 1989-1997.

Weinert, M., Floeter, J., Kröncke, I. and A. F. Sell (2010): The role of prey composition for the condition of grey gurnard (Eutrigla gurnardus). J. of Applied Ichthyology. Vol 26/s1, 75 – 84.

Kempf, A., Floeter, J., Temming, A. (2009): Recruitment of North Sea cod (Gadus morhua) and Norway pout (Trisopterus esmarkii) between 1992 and 2006 – the interplay between climate influence and predation. Can J.Fish.Aquat.Sci., 66(4): 633–648.

Kempf, A., Floeter, J., Temming, A. (2008): Predator-prey overlap induced Holling type III functional response: an example from the North Sea fish assemblage. MEPS 367:295-308.

Voss, R., Dickmann, M., Hinrichsen, H.H., Floeter, J. (2008): Environmental factors influencing larval sprat Sprattus sprattus feeding in the Baltic Sea. Fisheries Oceanography, 17,3,219-230.

Temming, A., Floeter, J. and Ehrich, S.(2007): Predation hot spots: large scale impact of local aggregations. Ecosystems, 10 / 6, 865-876.

Ehrich, S., Adlerstein, S., Brockmann, U., Floeter, J., and 11 other authors (2007): 20 years of the German Small-Scale Bottom Trawl Survey (GSBTS): Senckenbergiana maritima, 37 (1) 13-82.

Kempf, A., Floeter, J., Temming, A. (2006): Decadal changes in the North Sea food web between 1981 and 1991 - implications for fish stock assessment. Can J.Fish.Aquat.Sci., Vol. 63 / 11, 2586-2602.

Floeter, J., Kempf, A., Vinther, M., Schrum, C., Temming, A. (2005): Grey gurnard (Eutrigla gurnadus (L.)) in the North Sea: an emerging key predator ? Can J.Fish.Aquat.Sci., 62/8: 1853-1864.

Floeter, J. & Temming, A. (2005): Analysis of prey size preference of North Sea whiting, saithe and grey gurnard. ICES Journal of Marine Science, 62: 897-907.

Floeter, J. & Temming, A. (2003): Explaining diet composition of North Sea cod (Gadus morhua L.): Prey size preference vs. prey availability. Can J.Fish.Aquat.Sci., 60: 140-150.

Floeter, J. & Temming, A (2003): North Sea Fish and higher trophic levels: a review. (North Sea 2000: Part 1: State of the Art in Marine Biology at the End of the 20th Century). Senckenbergiana maritima, 33, (1/2) 269-442.

Rückert, C., Floeter, J., Temming, A. (2002): An estimate of Horse Mackerel biomass in the North Sea, 1991 -1997. ICES Journal of Marine Science, 59: 120-130.

Other literature

Kempf, A., Floeter, J., Temming, A (2009).: Predator-prey overlap induced Holling type III functional response in the North Sea fish assemblage, ICES ASC. ICES CM 2009/P:03

Floeter, J., Temming, A.: The virtual stomach sampler (Poster) (2009) ICES/PICES/UNCOVER Symposium. Rebuilding Depleted Fish Stocks - Biology, Ecology, Social Science and Management Strategies 3 – 6 November 2009 Warnemünde/Rostock, Germany

Kempf, A., Floeter, J., Temming, A. (2005): Are we able to model 0-group fish? ICES Study Group on Multispecies Assessment in the North Sea [SGMSNS] 2005 Kopenhagen, Working Document

Floeter, J., Kempf, A., Temming, A. (2005): Evaluating the effects of survey index calculation, and changes in survey coverage on whiting IBTS quarter 1 index trends. Working Document for the Study Group on Stock Identity and Management Units of Whiting [SGSIMUW] 78pp.

Kempf, A., Floeter, J., Temming, A. (2003): Sensitivity of 4M predictions to the use of different stomach data sets, a case study on a potential North Sea gadoid recovery plan. ICES Study Group on Multispecies Assessment in the North Sea [SGMSNS] 2003 Bergen, Working Document

Schmidt, J.O., Floeter, J., Herrmann, J.-P., Sell, A., St. John, M., Möllmann, C., Temming, A. (2003): Small scale distribution of reproducing female Pseudocalanus sp. in the Bornholm Basin (central Baltic Sea) during two contrasting hydrographic regimes in spring 2002 and 2003. ICES CM 2003 / P:37

Möllmann, C., Schmidt, J.O., Temming, A., Herrmann, J.-P., Floeter, J.; Sell, A. (2002): Video plankton recorder reveals environmental problems of marine copepod. Globec International Newsletter. 8/2. 20-21.

Floeter, J. & Temming, A. (2002): Synthesis and New Concept for North Sea Research (SYKON). Group 9: Higher Trophic Levels. Final Report, Berichte aus dem Zentrum für Meeres- und Klimaforschung - Reihe Z: No. 11, 319pp

Floeter, J. (1998): Analyse und Modellierung der Nahrungsselektion von Nordseefischen. Diplomarbeit, Institut für Hydrobiologie und Fischereiwissenschaft, Universität Hamburg, 122pp.

Floeter, J. & Temming, A. (1999): Food selection in North Sea gadoids - what role does prey size preference play ? Conference on Marine Ecosystem Perspectives´, Gilleleje, Denmark. ICES Cooperative Research Report. No 240, 67-68.

Selected Oral & Poster Presentations

Antje Gimpel, Vanessa Stelzenmüller, Jens Floeter and Axel Temming (2011). Spatial explicit tools to support an ecosystem- based management: Modelling of nursery grounds in der German EEZ. ICES ASC 2011, G:21

Floeter, J., Diekmann, R., Möllmann, C. (2010):Ecosystem Based Assessment of Eastern Baltic Cod - Can a holistic knowledge-based fuzzy-logic Approach be useful ?” ICES WGIAB, April, 19-23.

Floeter, J.., Möllmann, C. (2009): Decadal variability in the structure and functioning of the North Sea and Baltic Sea food webs – changes or replacements ? ICES ASC, CM P:07.

Floeter, J.: EU project BECAUSE - first results (2006). Deutsche Wissenschaftliche Kommission für Meeresforschung (DWK), 21. Juni 2006, IOR, Rostock (invited oral presentation).

Kempf, A.; Floeter, J. and A. Temming (2005): Importance of variations in 0-group fish predation mortalities for recruitment success and implications for fisheries management. ICES C.M. O:41. (Poster)

Floeter, J. (2004): Grey gurnard in the North Sea - an emerging new predator? ZMAW Symposium, 11.June 2004, Hamburg. (oral presentation)

Floeter, J.; Sell, A; Temming, A.; Schrum, C.; St. John.M. (2004): Effects of hydrographic fronts on small-scale variability in plankton distribution: First Video Plankton Recorder results from the North Sea. GLOBEC Germany, Status Seminar, January 2004, BFA-Fischerei, Hamburg, (invited oral presentation)

Sell, A; Floeter, J.; Herrmann, J.P.; Temming, A.; St. John, M. (2004): Effects of hydrographic fronts on small-scale plankton distribution: Video Plankton Recorder results from the North Sea. GLOBEC Germany, Status Seminar, January 2004, BFA-Fischerei, Hamburg.(Poster)

Floeter, J. & Temming, A. (2003): Size preference models for North Sea cod, whiting, saithe and grey gurnard feeding on fish. ICES C.M. N:08. (poster & oral presentation)

C. Rückert, J. Floeter, C. Schrum, I. Alekseeva, E. Götze, C. Zimmermann, M. St.John, A. Temming. (2003): Changes in spatial distribution of North Sea clupeids during the 1990s: A response to frontal dynamics? ICES C.M. P: 39. (Poster)

Schmidt, J.O.; Floeter, J.; Herrmann, J.-P.; Sell, A; St. John, M.; Möllmann, C.; Temming, A., (2003): Investigation of the small-scale distribution of Pseudocalanus sp. in the Baltic Sea using a Video Plankton Recorder (VPR) 3rd International Zooplankton Production Symposium, May 20-23, Gijón, Spain, (S6-525). (Poster)

Floeter, J. (1999): Food selection in North Sea gadoids - what role plays prey size preference?, ICES `Young Scientists Conference on Marine Ecosystem Perspectives´, Gilleleje, Denmark. (oral presentation)

Floeter, J. (1997): "North Sea Cod – Herring Interaction", ICES Multi Species Assessment Working Group Kopenhagen, Denmark. (oral presentation)