Michael St.John (Prof.Ph.D.) 

Mail: mstjo@aqua.dtu.dk

Phone: +45 2179 89 32

DTU Aqua
National Institute of Aquatic Resources
Section for Population Ecology and Genetics
Technical University of Denmark
Charlottenlund Slot
Jægersborg Allé 1
2920 Charlottenlund
Denmark

 Citizenship: Canadian
Birthdate: 01/01/1953
Languages: English 1st language; Danish (fluent); French (minor)

Research interests

The primary focus of my research in biological oceanography is that of coupling variations in species dynamics to physical oceanographic phenomena. Specifically I focus on resolving the influence of variations in inter and intra annual physical forcing on the dynamics of phytoplankton and zooplankton populations and the impact of variations in these planktonic organisms on higher trophic levels. The approach I employ is "bottom up" and entails identifying the influence of physical oceanographic processes, which are climatically modified, on the growth, condition and survival of marine organisms.

My research encompasses a rather broad research area, however, I believe this is necessary as fluctuations in population abundance are the result of variations in survival success of the early life history stages. This variability in survival success is the result of a series of stochastic processes acting over early life history stages of a species. Understanding the variations in species abundance therefore requires the identification and quantification of the impact of individual processes on survival success during this temporal period.

My approach in addressing ecosystem dynamics is hierarchical. First, this involves the identification of physical processes having the potential to modify ecosystem function (e.g. runoff, frontal mixing, transport processes) and how these are modified by variations in climatic forcing. In order to address how variations in oceanographic processes, influence in the dynamics of phytoplankton, as well as zooplankton and larval fish species I have utilised simulation techniques such as coupled 2-D and 3-D biophysical models as well as field programs.

The second step is to determine the mode of influence of the process on phytoplankton as well as holo and meroplankton dynamics through the generation and testing of hypotheses. Key to this hypothesis testing approach is the resolution of variations in organism status relative to specific oceanographic features in the field. This requires laboratory verification of key measures of individual growth and condition as well as the application of these indices in the testing of hypotheses in the field. To this end, I have used two techniques. First, in order to couple variations in condition of zooplankton species such as Calanus finmarchicus and larval fish to physical processes, I have the examined the content storage lipids as energetic reserves of the individual and specific fatty acids as lipid biomarkers. These measures, when performed on the same individual provide an estimate of energetic reserves as well as the hydrographic process contributing to these reserves. Resolution of hydrographic regime is possible due to the affinity of specific marine phytoplankton groups, having conservatively transferred lipid biomarkers, to water masses with specific mixing characteristics (e.g. diatoms in the spring bloom and frontal mixing regions; flagellates in stratified nutrient limited water masses). I have used this technique to identify the importance of diatom production for the energetic reserves of over wintering diapause Calanus finmarchicus, a key copepod species in the North Atlantic and North Sea as well as the importance of frontal mixing processes for the condition of North Sea cod larvae and juveniles.

The second approach I have exploited for determining the effects of physical processes on growth is the analysis of otolith microstructure in fish larvae. This technique is quite powerful as, when combined with environmental data, daily variations in otolith growth and as well as determination of birth dates can identify environmental windows of increased survival success. Furthermore this approach identifies historic variations in individual growth thus allowing the examination of the effects of growth rate and oceanographic conditions on survival success. For example, utilising otolith derived hatch dates of Baltic cod larvae and surviving juveniles, we performed a 3-D a coupled biophysical modelling exercise which identified the importance of transport processes for the recruitment success of this stock. This resulted in our development of a transport index, which we employed as a significant environmental variable in a statistical modelling exercise describing the stock and recruitment relationship of Baltic cod.

At present, I am involved in coupling 3-D hydrodynamic models to individual based models of zooplankton and larval fish feeding and growth to further clarify the mechanisms by which physical processes influence survival. This approach, through simulation and scenario testing identifies key hydrographic and biological processes for examination in research programs as well as incorporation into predictive modelling exercises examining survival variability relative to environmental processes.

Educational background

Degrees and positions held

1) B.Sc. Honors (1984). Oceanography & Biology Departments, University of British Columbia, British Columbia, Canada.
Thesis topic: Food resource utilisation, digestive rate and daily ration of juvenile Oncorhynchus keta in Burrard Inlet, British Columbia.
2) Doctor of Philosophy. (October, 1989). University of British Columbia, Department of Oceanography, British Columbia, Canada.
Supervisor: Dr. T.R. Parsons
Thesis Topic: Promontory induced Tidal Mixing in a narrow Channel: Effects on Nutrient Concentrations, Primary Production, Zooplankton standing Stock and Fish Distributions.

Post graduate activities

1) Post-Doctoral Fellowship, (Nov. 1989-Feb.92). With Dr. P.J. Harrison at the University of British Columbia, Dept. of Oceanography, Canada. Funding provided by a Canadian National Science and Engineering Research Grant.

2) Research Associate, Vancouver Public Aquarium, May, 1988 to Feb. 1992.

3) Post Doctoral Fellowship, (Commencing Feb.1992). With Katherine Richardson and Peter Munk, Danish Institute for Fisheries and Marine Research. Charlottenlund Castle, Charlottenlund, Denmark. Funded by Danish National Science Foundation

4) Research Scientist, 1994. Danish Institute for Fisheries and Marine Research, Charlottenlund Castle, Charlottenlund Denmark.

5) Senior Scientist, 1998 to 2001. Danish Institute for Fisheries and Marine Research, Charlottenlund Castle, Charlottenlund Denmark

6) Professor. University of Hamburg, Institute For Hydrobiology and Fisheries Science 2001.

7) Vice Director, Center for Marine and Climate Research, University of Hamburg. 2002

Editorial board

Journal of Plankton Research
ICES Journal of Marine Science: Guest editor
Progress in Oceanography: Guest editor

Activities as referee Journals

Australia Journal of Marine and Freshwater Research
Canadian Journal of Fisheries and Aquatic Science
Fisheries Oceanography
ICES Journal of Marine Science
Journal of Fish Biology
Marine Ecology Progress Series
Ophelia
Marine Biology
Journal of Plankton Research

Funding agencies

Memberships in working groups, international committees

• Member of the ICES Working Group on Cod and Climate, 1993 to Present.
• Member of the ICES Working Group on Recruitment Processes. 1996 to present
• Member of the American Society for Limnology and Oceanography
• National Representative, ICES/GLOBEC North Atlantic Regional Co-ordination Meeting Woodshole, Massachusetts, U.S.A., June 1998.
• GLOBEC International, Member of Focus Group 2 Processes Studies
• Co-chair of the IMBER-GLOBEC Food Webs End to End Transition Team
• Deutsche Forschungsgemeinschaft (German Research Foundation), Member of the Senates Commission for Oceanography, since 2007

Projects

Ongoing externally funded research

1. EU 6th Framework Programme PRIORITY TP 8.1 Integrating and Strengthening the European Research Area Scientifc Support to Policies:
   • UNCOVER: UNderstanding the Mechanisms of Stock ReCOVERy
     Responsibilities: Co-coordinator of WP 6 Project synthesis, Program Steering committee

2. EU 6th Framework Programme under GLOBAL CHANGE and ECOSYSTEMS:
   • EUR-OCEANS: EURopean network of excellence for OCean Ecosystems AnalysiS.
     The overall scientific objective of EUR-OCEANS is to develop models for assessing and forecasting the impacts of climate and anthropogenic forcing on food-web dynamics (structure, functioning, diversity and stability) of pelagic ecosystems in the open ocean. more
     Responsibilities: Coordinator of Scientific Theme 1 (Ecosystems End-to-End), Member of the Network Steering Committee

3. EU 6th Framework Programme - Specific Targeted Research Project (EU STREP)
   • PROTECT: Marine Protected areas as a tool for ecosystem conservation and fisheries management.
     Responsibilities: WP 4 Coordinator (MPA monitoring strategies and Databases), Member Program Steering Committee.

4. German Science Foundation, DFG priority program AQUASHIFT (2004-2006)
   • Topic: RECONN: Resolving Trophodynamic Consequences of Climate Change: Simulating and Predicting Marine Ecosystem Dynamics and Match-mismatch Effects on Key Trophic Players
     Responsibility: Coordinator

5. EU 6th Framework Programme - Specific Support Action BASIN:
   • Sub-Priority 1.1.6.3: Global Change of Ecosystems Topic: Resolving the impact of climatic processes on ecosystems of the North Atlantic Basin and shelf seas: Integrating and advancing observation, monitoring, and prediction
     Responsibility: Coordinator

6. EU 6th Framework Programme - Specific Targeted Research
   • Project RECLAIM: REsolving CLimAtic IMpacts on fish stocks
     Responsibility: Participant

Completed externally funded research

1. International Program
   EU # QLRT-1999-30183. Quality of Life and Management of Living Resources DG XIV
   Title: LIFECO Linking hydrographic frontal activity to ecosystem dynamics in the North Sea and Skagerrak: Importance to fish stock recruitment.
   Status: 2000 -2003.
   Position: International Co-ordinator.
   Proposal Responsibility: Development of Science Plan, Proposal Generation, Establishment of Research Group, Negotiations with the EU
   Leader of :
   WP2: Coupled Bio Physical Modelling: Simulation of lower trophic level dynamics
   WP9: Synthesis, scenario and hypothesis testing

2. International Program, EU FAIR Programme. (FAIR 98 3959)The European Community Programme for Research; Technology Development and Demonstration in the Field of Agriculture and Fisheries
   Title: Environmental and Fisheries Influences on Fish STock REecruitment in the Baltic Sea (STORE)
   Status: 1999-2001.
   Position:
   National: Co-ordinator.
   International: Task Leader: Task 3, Identification of abiotic and biotic processes influencing the feeding environment, growth, distribution and survival of larval/juvenile cod and sprat.
   Proposal Responsibility: Development of Science Plan, Proposal Generation

3. EU funded Baltic CORE programme (AIR2-CT94-1226) "Mechanisms Influencing Long Term Trends in Reproductive Success and Recruitment of Baltic Cod: Implications for Fisheries Management". Successfully completed Jan. 1998.
   Proposal Responsibility: Development of Science Plan, Proposal Generation.
   National: Programme Co-ordinator
   International: Task leader:
   a) Process Analysis Section
   - Nutritional condition and growth
   - Abundance and growth rate of 0-group cod
   - Meso-scale distribution and drift
   b) Modelling Section
   - Modelling cod early life history and recruitment.

4. EU funded (FAIR- CT95-0084) "Recruitment Processes in Cod and Haddock: Developing new approaches" successfully completed Jan. 1998
   Programme Responsibility:
   National: Participant
   International: Task leader:
   Experimental Studies
   - Resolving the effects of environmental processes on growth, condition and survival.

5. International Program: US GLOBEC Georges Bank Program Funded by US NSF program.
   Title: Resolving the importance of frontal processes for larval cod and haddock growth and condition.
   Duration: 1999-2001.
   Proposal Responsibility: Contributor
   Programme Responsibility: Coupling of larval condition and growth to frontal diatom biomass using fatty acid biomarkers.

6. International Program: EU funded EU DG14 Study Project: NO 98/026 :
   Title: A new sampling regime for resource assessment of herring in the Skagerrak, Kattegat and SW Baltic
   Duration: 1999-2001
   Proposal Responsibility: contributor
   Programme Responsibility: Task Leader: Application of lipid biomarkers

Publications

Research articles (peer-reviewed)

Christensen, A, Jensen, H, Mosegaard, H, St. John, M, Schrum, C. Sandeel larval transport patterns in North Sea from an individual-based hydrodynamic egg and larval model. Canadian Journal of Fisheries and Aquatic Sciences (submitted).

Christensen, A.; Daewel, U.; Jensen, H.; Mosegaard, H.; St. John, M. and Schrum, C.,(2007). Hydrodynamic backtracking of fish larvae by individual-based modelling. Marine Ecology Progress Series 347: 221–232.

Hannah, C.; Vezina, A. and St. John, M. A. Complexity theory and Marine Ecosystem Models: A view from 30,000 feet. Progress in Oceanography (submitted).

St. John, M. A.; Hüssy, K.; Hinrichsen, H.-H.; Grönkjaer, P.; Köster, F. W.; Mosegaard, H.; Nielsen, R. Can the characteristics of surviving larval and juvenile Baltic cod (Gadus morhua L.) reveal key processes in their recruitment? Progress in Oceanography (in revision).

St. John, M. A.; Moloney, C. L.; Denman, K. L.; Karl, D. M.; Köster, F. W.; Sundby, S. and Wilson, R. P. Newton and Kelvin meet Darwin in the complex sea of global change: unravelling marine food webs end to end. Journal of Plankton Research (submitted).

St John, M. A.; Monfray, P. and Ruiz, J. Introduction to the International Symposium on Parameterisation of Trophic Interactions in Ecosystem Modelling. Progress in Oceanography (submitted).

St John, M. A.; Monfray, P.; Ruiz, J. and Griggorov, I. Lessons from the International Symposium on Parameterisation of Trophic Interactions in Ecosystem Modelling: What have we learned? Progress in Oceanography (submitted).

Röckmann, C.; Tol, R. S. J.; Schneider, U. A. and St. John, M. A. Rebuilding the Eastern Baltic cod stock under environmental change - Part II: The economic viability of a marine protected area. Natural Resource Modelling (in press).

Röckmann, C.; Schneider, U.A.; St. John, M. and Tol, R.S.J., (2007). Rebuilding the Eastern Baltic Cod stock under Environmental Change: A preliminary approach using stock environmental and management constraints. Natural Resource Modeling 20: 223-262.

Röckmann, C.; St. John, M.A. and Tol, R.S.J., (2007). Testing the implications of a permanent or seasonal marine reserve on the population dynamics of Eastern Baltic cod under varying environmental conditions. Fisheries Research 85: 1 -13.

Schrum, C.; Alekseeva, I.; St. John, M.A., (2006). Development of a coupled physical-biological ecosystem model ECOSMO Part I: Model description and validation for the North Sea. Journal of Marine Systems 61: 79-99.

Schrum, C.; St. John, M.A.; Alekseeva, I., (2006). ECOSMO, a coupled ecosystem model of the North Sea and Baltic Sea Part II: Spatial-seasonal characteristics in the North Sea as revealed by EOF analysis. Journal of Marine Systems 61: 100-113.

Köster, F.W.; Möllmann, C.; Hinrichsen, H.-H.; Wieland, K.; Voss, R.; Kraus, G.; Tomkiewicz, J.; Makarchouk, A.; Schnack, D.; MacKenzie, B.R.; St. John, M.A.; Rohlf, N.; Linkowski, T. and Beyer, J. E., (2005). Baltic cod recruitment – impact of climate variability on key processes 2005. ICES Journal of Marine Science 62: 1408-1225.

Dalsgaard, J. and St. John, M.A., (2004). Fatty acids biomarkers: validation of food web and trophic markers using stable carbon isotope labelled fatty acids in juvenile sandeel (Ammodytes tobianus). Canadian Journal of Fisheries and Aquatic Science 61:1671-1680.

Köster, F. W.; Hinrichsen, H.-H.; Schnack, D.; St. John, M. A.; MacKenzie, B. R.; Tomkiewicz, J.; Möllmann, C.; Kraus, G.; Plikshs, M.; Makarchouk, A. and Eero, A., (2003). Recruitment of Baltic cod and sprat stocks: identification of critical life stages and incorporation of environmental variability into stock-recruitment relationships. Scientia Marina 67 (suppl. 1): 129-154.

Köster, F.W.; Möllmann, C.; Hinrichsen, H. -H.; St. John, M. A.; Plikshs, M. and Schnack, D., (2003). Impact of Hydrography and Species Interaction on Baltic Cod Recruitment: A Summary. ICES Journal of Marine Science 219: 294-306.

Nielsen, M. H. and St. John, M. A., (2003). Inter and intra annual variations in the onset of stratification and the timing and intensity of spring bloom in the Central North Sea in the 90's. ICES Journal of Marine Science 219: 384-386.

Schrum, C.; Siegismund, F. and St. John, M. A., (2003). Decadal Variations in the stratification and circulation patterns of the North Sea; are the 90´s unusual? ICES Journal of Marine Science 219: 121-131.

St. John, M. A.; Budgell, P.; Nielsen, M. H.and Lucas, A., (2003). Resolving variations in the timing and intensity of the Spring Bloom in the Central North Sea during the 90's: A comparison of Remote Sensing and 2-D modelling approaches. ICES Journal of Marine Science 219: 190- 199.

Nielsen, M.H., St. John, M.A., 2001. Modelling thermal stratification in the North Sea: Application of a 2-D potential energy model.. Est. Coast. Shelf Sci.53: 607-617

Hinrichsen, H.-H., St. John, M. A., Aro, E., Gronkjær, P., Voss, R. 2001. Testing the larval drift hypothesis in the Baltic Sea: Retention vs dispersion due to the influence of wind driven circulation. ICES J. Mar. Sci, 58:

Köster, F. W., Möllmann, C., Neuenfeldt, S., St. John, M.A., Plikshs, M., Voss, R. 2001. Developing recruitment models for Baltic cod I: Resolving spatial and temporal dynamics of spawning stock and recruitment Canadian Journal of Fisheries and Aquatic Science 58: 1516-1533

Köster, F.W., Hinrichsen,, H.-H., St. John, M.A., Schnack, D., MacKenzie, B., Plikshs, M., 2001. Developing Baltic cod recruitment models II: Incorporation of environmental variability and species interaction. Canadian Journal of Fisheries and Aquatic Science.58: 1534-1556

St. John, M.A., Clemmesen, C. Lund, T., Köster, F. W., 2001. Diatom production in the marine environment: Implications for larval fish growth and condition. ICES J. Mar. Sci., 58: 1106-1113

Voss, R., Hinrichsen, H.-H, St. John, M.A. 1999. Larval drift and retention of Baltic cod-combining field and modelling approaches. Fish. Oceanogr. 8:199-212

Tomkiewicz, J., Lehmann, K.M., St. John, M.A. 1998. Oceanographic influences on the distribution of spawning aggregations of Baltic cod (Gadus morhua L.) in the Bornholm Basin, Baltic Sea. Fish. Oceanogr., 7:48-62.

Jónasdóttir, S.H, Kiørboe,T., Tang, K.W., St. John, M.A., Visser A.W., Saiz, E., Dam, H.G. 1998. The role of diatoms in copepod production: good, harmless or toxic?. Mar. Ecol. Prog. Ser., 172: 305-308

Yin, K., Harrison, P.J., Goldblatt, R.H., St. John, M.A., Beamish R.J. 1997. Factors controlling the timing of the spring bloom in the Strait of Georgia estuary, British Columbia, Canada. Can. J. Fish Aquat. Sci., 54: 1985-1995

Grønkjær, P., Clemmesen, C., St. John, M.A. 1997. Nutritional condition and vertical migration of cod larvae in the Baltic. J. Fish Biology. 51: Suppl. A) 352-369.

Hussy, K., St. John, M.A., Böttcher U., 1997. Habitat utilisation by juvenile O-group demersal cod: Evidence for density dependent processes influencing recruitment? Mar. Ecol. Prog. Ser., 155:199-208

Yin, K., Goldblatt, R.H., Harrison, P.J., St. John ,M.A., Clifford, P.J, Beamish R.J. 1997. Importance of wind and river discharge in influencing nutrient dynamics and phytoplankton production in summer in the central Strait of Georgia. Mar. Ecol. Prog. Ser., 161:173-183

Hinrichsen, H.-H., Lehmann, A., St. John, M.A., Brugge, B. 1997. Modelling the cod larvae drift in the Bornholm Basin in the Summer of 1994. Cont. Shelf Res. 17: 1765- 1784.

MacKenzie, B.R., St. John, M.A., Weiland, K. 1996.Eastern Baltic cod: perspectives from existing data on processes affecting growth and survival of eggs and larvae. Mar. Ecol. Prog. Ser., 134: 265-281

St. John, M.A., Lund, T. 1996. Lipid biomarkers: Linking the utilization of frontal plankton biomass to enhanced condition of juvenile North Sea Cod. Mar. Ecol. Prog. Ser., 131:75-85

Beamish, R.J., Neville, C.E.M., Thomson, B.L., Harrison, P.J., St. John, M. A. 1994. A relationship between Fraser River discharge and interannual production of Pacific Salmon (Oncorhynchus spp.) and Pacific Herring (Clupea pallasi) in the Strait of Georgia. Can. J. Fish. Aquat. Sci., 51: 2843-2855

St. John, M.A., Marinone, S.G., Stronach, J., Harrison, P.J., Fyfe, J., Beamish, R.J. 1993. A Horizontally Resolving Physical- Biological Model of Nitrate concentration and Primary Productivity in the Strait of Georgia British Columbia, Canada. Can. J. Fish. Aquat. Sci., 50: 1456-1465

St. John, M.A., Harrison, P.J., Parsons, T.R. 1993. Tidal wake-mixing: localised effects on primary production and zooplankton distributions in the Strait of Georgia, British Columbia. J. Exp. Mar. Biol. Ecol., (1992) 164: 261-274.

St. John, M.A., MacDonald, J.S., Harrison, P.J., Beamish, R.J., Choromanski, E. 1992. The Fraser River Plume: Effects of a turbid riverine plume on the distribution of juvenile salmonids, herring and their prey. Fish. Oceanogr., 2: 291-310.

St. John M.A., Pond. S. 1992. Tidal Jet Generation Around a Promontory: Effects on Nutrient Concentration and Primary Productivity. Cont. Shelf Res., 112: 339-354

Jones, D.J,. Harrison, P.J., Clifford, P.J., Yin, K., St. John, M.A.,1992. A Computer-based System for the Acquisition and Display of Continuous Vertical Profiles of Temperature, Salinity, Fluorescence and Nutrients. Water Research, 25: 1545-1548.

Harrison, P.J., Clifford, P.J., Cochan, W.P., Yin, K., St. John, M.A., Thompson, P.A., Sibbald, M.J., Albright. L.J. 1991. Nutrient and plankton dynamics in the Fraser River plume, Strait of Georgia, British Columbia. Mar. Ecol. Prog. Ser., 70: 291-304.

Powlik, J.J., St. John, M.A., Blake R.W. 1991. A retrospective of plankton pumping systems, with notes on the comparative efficiency of towed nets. J. Plank. Res., 13: 901-912.

Other literature

Plankton Production and Nutrient Dynamics in the Fraser River Plume, 1987. University of British Columbia Department of Ocgy. Man. Rept. #5

ICES 1994. Chairmans report of the ICES/GLOBEC Cod and Climate Change AGGREGATION Workshop, Charlottenlund, Denmark, August 22-24, 1994. ICES CM 1994/A:10 (Meeting Co-Chaired by M. St. John & B. MacKenzie).

CORE, AIR2-CT94-1226 "Mechanisms influencing long term trends in reproductive success and recruitment of Baltic Cod Implications for fisheries management". Annual Report of Activities to the European Union, (Period 01/07/1994 to 30/06/1995

Schnack, D., Köster, F., Wieland, K., St. John, M.A, MacKenzie, B., 1995. Baltic cod Recruitment Project. ICES C-.M-. 1995/J:23

Petersen, G., St. John, M.A., Rimeck, A., Schneider, R., 1995. Comparison of chlorophenyl congener and pesticide concentration in cod tissues in relation to their lipid class content. ICES C-.M-. 1995/E:14

Mosegaard, H., St. John, M.A., Hüssy, K. 1995. Otolith micro-structure pattern as an indicator of environmental and fish condition of Baltic cod at settling. ICES C-.M-. 1995/G:35

MacKenzie, B.R., St. John, M.A. 1995. Patchiness of the plankton and abiotic variables: at what scales and turbulence levels do distributions differ. ICES C-.M-. 1995/Q:22

MacKenzie, B.R., St. John, M.A., Wieland, K. 1995. Processes affecting growth and survival of cod eggs and larvae in the eastern Baltic. ICESC-.M-. 1995/J:26

Hinrichsen, H.-H., Lehmann, A., St. John, M.A., Brugge, B. 1995. Larval drift and retention: Baltic cod a modelling approach. ICES C-.M-. 1995/L:28

Grønkjær, P., Jørgensen, S.J.B., Frederiksen, M., St. John, M.A., Clemmensen, C., Støttrup, J.G. 1995. The influence of essential fatty acid composition on growth of larval cod (Gadus morhua L.): preliminary observations. ICES C-.M-. 1995/J:19.

St. John, M.A., Munk, P., Bagge, O. 1995. The influence of hydrographic processes on plankton distribution and production in the Bornholm Basin, Baltic Sea. ICES C-.M-. 1995 /Q:5

Schnack, D., Köster F.W, Weiland, K., Rosenthal, H., St. John, M.A., MacKenzie, B., Tomkiewicz, J., Nissling, A., Larrson, P.O., Aro., E. 1996. Baltic cod Recruitment Project. ICES C.M. 1996/J:18

Tomkiewicz, J., Stæhr, K.-J., Lehman, K.M., St. John, M.A. 1996. Influence of salinity, oxygen and temperature on spawning aggregation and spatial distribution of Baltic cod (Gadus morhua L.) ICES C.M. 1996/C+J:3

MacKenzie, B.R., St. John, M.A., Plikshs, M., Hinrichsen, H.-H., Weiland, K., 1996. Oceanographic processses influencing seasonal and interannual variability in cod spawning habitat in the eastern Baltic Sea ICES C-.M-. 1996/C+J:4

St. John, M.A., Hinrichsen, H.-H., Lehmann, A., MacKenzie, B.R. 1996. Oxygen in the deep basins of the Baltic Sea: The influence of winter mixing. ICES C-.M-. 1996/C+J:2

CORE, AIR2-CT94-1226 "Mechanisms influencing long term trends in reproductive success and recruitment of Baltic Cod: Implications for fisheries management". Annual Report of Activities to the European Union (Period 1.7.1996 to 31.12.1997

EU Contract FAIR- CT95- 0084. Recruitment processes in cod and haddock: Developing new approaches. Final Report of Activities 1.1.1996-31.12.1997

CORE, AIR2-CT94-1226 "Mechanisms influencing long term trends in reproductive success and recruitment of Baltic Cod: Implications for fisheries management",. Final Report of Activities 1.7.1994-31.12.1997

Danielsen, P., St. John, M.A., Heilmann, J., 1998. Investigations of hydrographic processes influencing the distribution and production of phyto- and zooplankton in the Bornholm Basin, Baltic Sea. ICES C-.M-. 1998 /R: 12

Møller, P., St. John, M.A., Lund, T., Madsen, K.P., 1998. Identifying the effect of frontal regimes on condition in larval and juvenile sand lance (Ammodytes sp.): Utilization of food web specific tracer lipids. ICES C.M. 1998 /R: 8

ICES 1999. Chairmans report of the ICES/GLOBEC Cod and Climate Change Backwards Facing 4 Workshop, Aberdeen, Scotland, Denmark, March, 1999. (Meeting Co-Chaired by M. Heath, J. Alheit & M.A., St. John).

Köster, F.W., Hinrichsen, H.-H., Schnack, D., St. John, M.A. MacKenzie, B., Plikshs, M. 1999. Stock-recruitment relationships of Baltic cod incorporating environmental variability and spatial heterogeneity ICES C-.M-. 1999/Y:26

St. John, M.A., Mosegaard, H., Hinrichsen, H.-H., Grønkjær, P., Köster F., Hüssy, K., Neilsen, R. 2000. Baltic Cod: Resolving processes determining spatial and temporal windows of survival. ICES C.M ICES CM 2000/N:27

St. John, M.A. Biomarkers: Reducing the effects of immigration in process studies examining larval and juvenile fish growth and condition. ICES C.M. 2001/V:27

Selected Oral & Poster Presentations