Martin Olsen

Research projects

I am part of the research project "Climate change impacts on ecological conditions in streams" (http://www.ecohydrology.ruc.dk/).

Supervision 

Undergraduate Environmental Biology students (5^th semester) working on "Brown trout physical habitat selection - difference between field and flume observations" (written in English)

Undergraduate Geography students (5^th semester) working on "Simulating and mapping stream water temperature in relation to stream management objectives"

Undergraduate NAT-basis students (4^th semester) working on "Brown trout behavioural response to changes in discharge and physical conditions"

Lecturing

Catchment hydrology and modelling in "Drainage basins: Processes, modelling and management", MSc. course at Geography

Streams and stream ecology in "Aquatic Field Course" (2007-2008), MSc. course at Environmental Biology (in English): http://www.ruc.dk/inst1/forstudents/cours/secondcandmod/aquaticfieldcourse/

Catchments and streams in "Geography A", undergraduate course at NAT-basis (in English): http://www.ruc.dk/natbas/kurser/geografia2/

Catchment ecology in "Physical Geography intro-course" (2007-2008), BSc. course at Geography (in English)

Research keywords

Ecohydrology, stream ecology, streams, in-stream habitat modelling and physical habitat quality, climate change impact on stream ecology, catchment hydrology, integrated groundwater and surface water management, combining monitoring and modelling, stream biota with special emphasis on brown trout (Salmo trutta)

Curriculum

Education

2006          MSc. in Environmental Biology and Geography, Roskilde University 

Scientific Publications

Olsen, M., Dunbar, M. & Troldborg, L. (in prep.) Prediction of stream channel metrics from large scale variables - a regional model of hydraulic geometry.

Troldborg, L. & Olsen, M. (in prep.) Calibration criteria for coupling stream habitat model with physical based water resource model.

Olsen, M., Boegh, E., Pedersen, S. & Pedersen, M.F. (Accepted) Combining hydrological modelling and habitat modelling - impact of groundwater abstraction on physical habitat of brown trout (Salmo trutta) in a small Danish stream. Hydrology Research

Bloch-Petersen, M., Brandt, J. & Olsen, M. (2006) Integration of European habitat monitoring based on plant life form composition as an indicator of environmental change and change in biodiversity. Danish Journal of Geography, 106(2): 61-74.

Scientific Presentations

Olsen, M., Boegh, E., Conallin, J., Pedersen, M.F., Refsgaard, J.C. & Troldborg (Accepted) Groundwater abstraction impact on physical habitat conditions in small lowland streams in Denmark. Oral presentation at Ecohydraulics Conference 2009, 12^th-16^th of January 2009, Concepion, Chile

Olsen, M. & Conallin, J. (2008) How can we convert substrate composition to habitat quality? Invited speaker at ENVINA Seminar 47 on "Sand drift in Danish streams - causes and solutions" (in Danish), 27^th of November 2008, Vejle, Denmark

Olsen, M., Troldborg, L., Boegh, E. & Refsgaard, J.C. (2008) Tuning hydrological models for ecological modeling - improving simulations of low flows critical to stream ecology. Poster presentation at EnviroSymp 2008, 4^th-5^th of November 2008, Roskilde, Denmark. Best poster nominee.

Olsen, M., Troldborg, L., Boegh, E. & Refsgaard, J.C. (2008) Tuning hydrological models for ecological modeling - improving simulations of low flows critical to stream ecology. Oral presentation and extended abstract at HydroPredict'2008, 15^th-18^th of September 2008, Prague, Czech Republic

Boegh, E., Olsen, M., Conallin, J. & Madsen, M. (2008) Remote sensing based vegetation maps for predicting shade effects on water temperature and habitat suitability in small lowland streams. Poster presentation at HydroPredict'2008, 15^th-18^th of September 2008, Prague, Czech Republic

Troldborg, L. & Olsen, M. (2008) Tuning hydrological models for ecological modeling. Oral presentation at European Geophysical Union General Assembly 2008, April 2008, Vienna, Austria

Olsen, M., Henriksen P.W., Pedersen, S., Boegh, E., Pedersen, M.F. & Refsgaard, J.C. (2008) Does discharge and physical conditions determine brown trout density in Danish streams? Oral presentation at NoWPaS 2008, 14^th-17^th of February 2008, Holbæk, Denmark

Olsen, M., Henriksen P.W., Pedersen, S., Boegh, E., Pedersen, M.F. & Refsgaard, J.C. (2008) Hvilken indflydelse har fysiske forhold på ørredens habitat i vandløb? Poster presentation at Ferskvandssymposium 2008, 23^rd-24^th of January 2008, Århus, Denmark

Olsen, M., Boegh, E., Pedersen, M.F., Refsgaard, J.C. & Troldborg, L. (2007) Method for assessment of groundwater abstraction and climate change impact on physical habitat conditions in Danish streams. Poster presentation at the 6^th European Conference on Ecological Modelling, ECEM'07, 27^th-30^th of November 2007, Trieste, Italy

Olsen, M., Boegh, E., Conallin, J., Pedersen, M.F., Refsgaard, J.C. & Troldborg, L. (2007) Climate change and groundwater abstraction impact on stream ecology. Poster presentation at EnviroSymp 2007, 5^th-6^th of November 2007, Copenhagen, Denmark

Olsen, M., Boegh, E., Pedersen, M.F. & Refsgaard, J.C. (2007) Groundwater abstraction and climate change - impacts on physical habitat conditions for brown trout (Salmo trutta) in a small Danish stream. Poster presentation at the 3^rd International Conference on Climate and Water, 3^rd-6^th of September 2007, Helsinki, Finland

Levin, G., Brandt, J. & Olsen, M. (2007) Discrepancies in scale between stratified sampling based landscape monitoring and CORINE land cover registration. Oral presentation by M. Olsen at the IALE 2007 World Congress, Wageningen, Holland, 8^th-12^th of July 2007

Olsen, M. (2006): Habitat hydraulic models - a tool for Danish stream quality assessment? - a case study in a small Danish stream, Stream Ledreborg. Poster presented at the XXIV Nordic Hydrological Conference 2006. Awarded best poster presentation at the NHC 2006.

Other Publications 

Olsen, M., Boegh, E. & Conallin, J. (Accepted) Ecohydrology on RU - crossdisciplinary science within the hydrological system. Årsskrift 2007 for Det Kongelige Danske Geografiske Selskab (in Danish)

Dam, M., Geldmann, J., Gideon, A., Hammer, K.S., Kelager, A., Müller, E., Olsen, M., & Skouw-Rasmussen, M. (ed.) (2008) Wilhjelm+6 Nature and its management in the light of climate change (in Danish), Conference Proceedings. Published by the Student Committees from the Danish Nature Conservation Society.

Olsen, M. (2006) Habitat hydraulic models - a tool for Danish stream quality assessment? - a case study in a small Danish stream, stream Ledreborg. Combined Masters Thesis between Environmental Biology and Geography, RU. Supervisors: Boegh, E. & Pedersen, M.F.

Clausen, B., Olsen, M., Pedersen, S. & Pedersen, M.L. (2006) Habitat modelling in Stream Ledreborg. Impact on brown trout by reduced stream discharge. NERI-report no. 580. http://faglige-rapporter.dmu.dk/ (in Danish)

Administrative activities

Exchange Study and Research Stay

Scientific work experience

2006          Student research assistant on the Small Biotope Monitoring Programme (SBMP), RU

2005          Assistant teacher on International NAT-basis course, Geography A, RU

2005          Course assistant on NAT-basis course - Landskabsøkologi A, RU

2005          Research assistant on field application of the BioHab-project in Denmark, RU

2004          Work practice at the Danish Society for Nature Conservation (DSNC)