Four vacant Ph.D. positions and one Post doc position in connection with the Danish Centre of Excellence: Consequences of weather and climate changes for marine and freshwater ecosystems (Conwoy).


Position 1. Ecological consequences of climate changes on thermal stratification, transparency and anoxia of sensitive lake ecosystems. It is the major goal of this Ph.D. project to improve predictive models for lake stratification and mixing and their possible ecological consequences and specifically to analyse how future climate change scenarios might affect selected and vulnerable lakes in Denmark. We seek a Ph.D. student with skills in mathematical modelling who wants an ecological dimension or a biologist who wants to include mathematical modelling in future research and education.

The project is carried out in cooperation between the Danish Climate Centre (senior scientist Ole Bøssing Christensen [email protected]) and Freshwater Biological Laboratory (professor Morten Søndergaard [email protected]). The student will be enrolled at the Ph.D. school COGCI, University of Copenhagen.


Position 2. Modelling of water, sediment and nutrient transport in Danish rivers and estuaries. It is the goal of this Ph.D. project to quantify and model the transport of water, suspended sediment and nutrients in Danish rivers and estuaries.  Existing numerical models like MIKE 11 for rivers and MIKE 21 and MIKE 3 for estuaries should be applied to describe the linkage between increased soil erosion and its consequences for the water courses and the shallow marine areas acting as buffer zones between the fresh water systems and the marine environment. A prerequisite for the successful fulfilment of such a project will be to identify controlling key parameters and to parameterise their interdependence with driving climatic forces.

The project is carried out in cooperation between Institute of Geography, University of Copenhagen (professor Morten Pejrup, [email protected]), DHI Water & Environment (Senior Geographer Karen Edelvang) and National Environmental Research Institute (Senior researcher Brian Kronvang). The PhD student will be enrolled at the Ph.D. school COGCI, University of Copenhagen.


Position 3. Ocean-ecosystem modeller. The Danish Institute for Fisheries Research (DFU) is looking for an oceanographer – ecological modeller to fill a Post doctoral position. The position is for 1½ years, with an expected starting date in the fall of 2003. The appointee should have a PhD in oceanography or marine sciences. The responsibility of the post doctoral fellowship is to implement a coupled hydrographic – ecological model with a view to describing the biological and physical dynamics driving the subsurface production observed over large areas of the central North Sea during summer. This subsurface summer production is thought to be a key element in sustaining the North Sea ecosystem. An important aim of the work is to explore how this system will respond to different climate change scenarios. The candidate should have comprehensive analytic skills and an interest in applying them to both physical and biological problems.

This research will be part of a large Danish project, CONWOY, and the appointee will be expected to work in close collaboration with project partners. The position will be at DFU’s Department of Marine Ecology and Aquaculture (HØK) located in Charlottenlund, a few kilometers north of Copenhagen. Contact and enquiries: André W. Visser ([email protected],


Position 4: Maritime historian

The objective of this 3-year Ph. D. project is to understand how fisheries and variability in the marine ecosystem (e. g., climate changes, abundance of predators) affect North Sea fish populations, and how these interactions affect coastal communities.  An important component of the project will be the recovery and interpretation of historical fisheries data (e. g., landings, prices) from countries bordering the North Sea during the period 1600-1914; additional data to be included in the project will be those from the International Council for the Exploration of the Sea (ICES).  The candidate should have or develop i) strong statistical and mathematical skills (e.g., GIS, multivariate analyses of time series data) and ii) an understanding of fish population dynamics and marine ecology.  The project is a collaboration between Southern Denmark University (Esbjerg) and the Danish Institute for Fisheries Research (Charlottenlund).  Application deadline and project startdate are 15 February, 2003 and April 1, 2003.  Contact and inquiries: P. Holm ([email protected]) and B. MacKenzie ([email protected]).


Position 5: Influence of winter temperature change on phytoplankton activity and community structure: PhD position


Most research examining the effects of temperature change on phytoplankton has been carried out in the laboratory on single species and over rather large temperature ranges. Thus, it is not possible with existing knowledge to predict the potential effects on winter phytoplankton populations of the ca. 2-3o temperature increase expected as a result of the changing global climate. The development of the winter phytoplankton population is especially interesting and important as it is this population that, ultimately, gives rise to the spring bloom: the most dramatic signal in the annual primary production cycle. The purpose of this PhD project is to quantify the effects of relatively small temperature changes on winter phytoplankton populations (both marine and freshwater). The successful candidate should have completed at least 4 years of a Danish Candidate (Masters) degree or the equivalent and have knowledge of plankton (or plant) ecology and physiology and standard statistical procedures suitable for examining community characteristics. 


The project is a part of a larger research project CONWOY (address) and is a cooperative project between the University of Aarhus (Prof. Katherine Richardson) and Copenhagen University (Prof. Morten Søndergaard).  The successful candidate will be enrolled at the University of Aarhus.  



General conditions: The application for a Ph.D. study position has to meet the deadline 15 February 2003 and 1 May for the Post doc position. Three hard copies are mailed to professor Morten Søndergaard, Ferskvandsbiologisk Laboratorium, Helsingørsgade 51, DK-3400 Hillerød. The application should include full documentation of education, a CV and reprints if available. A short and preliminary description of a Ph.D. programme is welcome. More information can be found at .