Research Topics
| Lars HåkansonSummaryAffiliation: Uppsala University Country: Sweden Publications
| Collaborators |
Detail Information
Publications
Test and application of a general process-based dynamic coastal mass-balance model for contaminants using data for radionuclides in the Dnieper-Bug estuaryLars Håkanson
Dept of Earth Sciences, Uppsala Univ, Villav 16, 752 36 Uppsala, Sweden
Sci Total Environ 407:899-916. 2009..That the water chemical conditions in the bay influence biouptake and concentrations in fish of the radionuclides and 4. That the feeding behaviour of the coastal fish is very important for the biouptake of the radionuclides...- On the issue of limiting nutrient and predictions of cyanobacteria in aquatic systemsLars Håkanson
Department of Earth Sciences, Uppsala University, Villav 16, 752 36 Uppsala, Sweden
Sci Total Environ 379:89-108. 2007..have been shown to have very high coefficients of variation (CV), which means that many samples are needed to obtain reliable empirical data which are necessary in models aiming for high predictive power and practical usefulness... - Goals and remedial strategies for water quality and wildlife management in a coastal lagoon--a case-study of Ringkøbing Fjord, DenmarkLars Håkanson
Department of Earth Sciences, Uppsala University, Villav 16, 752 36 Uppsala, Sweden
J Environ Manage 86:498-519. 2008..However, it would be realistic to maintain a Secchi depth of 1.5m if the variability in salinity is minimized and the mean salinity is kept at about 10.2%... - A new general mechanistic river model for radionuclides from single pulse fallouts which can be run by readily accessible driving variablesLars Håkanson
Department of Earth Sciences, Institute of Earth Sciences, Uppsala University, Norbyv 18B, Villav 16, 752 36 Uppsala, Sweden
J Environ Radioact 80:357-82. 2005..0) and the r(2)-value is 0.90. This is good giving the fact that there are also uncertainties in the empirical data, which set a limit to the achieved predictive power, as expressed by the r(2)-value... - A new general dynamic model predicting radionuclide concentrations and fluxes in coastal areas from readily accessible driving variablesLars Håkanson
Department of Earth Sciences, Uppsala University, Villav 16, 752 36 Uppsala, Sweden
J Environ Radioact 78:217-45. 2005..Such information is essential for getting realistic expectations of various remedial measures, such as coastal dredging discussed in this work... - A new generic sub-model for radionuclide fixation in large catchments from continuous and single-pulse fallouts, as used in a river modelLars Håkanson
Department of Earth Sciences, Uppsala University, Villav 16, 752 36 Uppsala, Sweden
J Environ Radioact 77:247-73. 2004..2 for 90Sr in river water. The obtained characteristic uncertainty factors for 137Cs from the Chernobyl fallout is 2.4, for 137Cs from the NWT fallout it is 1.3 and for the 90Sr results from the NWT fallout it is 3 using the new model... - Modelling the transport of radionuclides from land to waterLars Håkanson
Department of Earth Sciences, Uppsala University, Villav 16, 752 36 Uppsala, Sweden
J Environ Radioact 73:267-87. 2004..3 to 100 microg/l and theoretical water retention times from 0.02 to 137 years). When modelled values were compared to empirical data, the slope was almost perfect (0.99) as well as the coefficient of determination (r2 = 0.96)... - A general approach to transform a lake model for one radionuclide (radiocesium) to another (radiostrontium) and critical model tests using data for four Ural lakes contaminated by the fallout from the Kyshtym accident in 1957Lars Håkanson
Uppsala University, Sweden
J Environ Radioact 60:319-50. 2002.... - Environmental consequence analyses of fish farm emissions related to different scales and exemplified by data from the Baltic--a reviewAndreas Gyllenhammar
Department of Earth Sciences, Uppsala University, Villavägen 16, S 752 36 Uppsala, Sweden
Mar Environ Res 60:211-43. 2005.... - Liming as a method to remedy lakes contaminated by radiostrontiumLars Håkanson
Institute of Earth Sciences, Uppsala University, Villav 16, 752 36 Uppsala, Sweden
J Environ Radioact 65:47-75. 2003..The Sr-model can be used to calculate changes in Sr-levels in water, sediments and fish. At best, these simulations indicate that it is realistic to expect that lake liming can reduce peak levels of 90Sr in fish by 25-40%...