Research interests

• QWARTS- Quantifying Weathering for Sustainable Forest Management
• Assessing human impact on aquatic ecosystems with a focus on atmospheric deposition and forestry
• Natural variability of surface water chemistry related to organic carbon and climate
• The role of hydrology in transporting and transforming the natural and anthropogenic constituents of runoff – with an emphasis on the riparian zone and episodes of high flow

Ongoing projects

• Forest harvest effects on catchment outputs of methylmercury - A Ph.D. project using a paired catchment approach to quantify changes in the flux of water and mercury after clearcutting with and without riparian buffer zones.
• Greenhouse gas evasion from boreal headwaters –  A Ph.D. project that is quantifying the “aquatic conduit” for CO2, CH4 and N2O in the carbon cycle of the boreal landscape. Intensive field measurements are being made on the 67 km2 Krycklan catchment.
• Credible acidification assessment - A Ph.D. project that seeks to improve the estimate of pre-industrial surface water acidity which serves as the “reference condition” for both national environmental goals as well as the EU Water Framework Directive. A major focus is on natural, climate-driven variability in water chemistry.
• Climate change effect on water quality – especially the drivers of decadal scale change in DOC. This is being conducted within the EU 6th Framework Project EUROLIMPACS.
• Deforestation effects on the dry season flows in the Ethiopian Highlands – A SIDA supported M.Sc. student is looking at 40 year records of flow and their relation to changes in land use.
• The Riparian Observatory - A Ph.D. student is testing the hypothesis that riparian zones are the first order control on runoff chemistry in the boreal forests of Sweden at the landscape scale. Topographic analysis of LIDAR elevation data  is being used to locate the study transects in this observatory (co-investigator).
• Episodic Acidity influences on the spatial distribution of fish species in boreal Sweden – A Ph.D. project. examining the temporal and spatial dynamics of water chemistry at the landscape scale (co-investigator).
• Inorganic aluminum levels in boreal streams: Separating the natural and anthropogenic components - A Ph. D. project using data ranging from hillslope scale process studies to national monitoring data to better understand the origins of toxic Al levels in boreal surface waters
• Functional assessment of wetlands – An M.Sc. student making a case study of how the ecosystem services of wetlands can be quantified and the used in multi-criteria assessment.
• Spatial and Temporal Patterns of DOC in the boreal landscape – A Ph.D. project that has examined the downstream patterns of DOC in a synoptically sampled landscape to identify catchment sources and in-stream transformations of natural organic matter.

Research Students - Principal Supervisor

Stephan Köhler, SLU, The Role of Natural Organic Acids on pH and Buffering, (Ph.D. 1999)
Filip Moldan, SLU, Modeling Reversal of Acidification on the Gårdsjön Covered Catchment, (Ph.D. 1999)
Hjalmar Laudon, SLU, Separating Natural from Anthropogenic Acidity in the Spring Flood, (Ph.D. 2000)
Lars Rapp, SLU, Improving Critical Loads for Surface Waters, (Ph.D. 2001)
Johanna Lindberg, SLU, Implementation of Environmental Quality Guidelines, (Lic. 2001)
Per-Erik Mellander, SLU, Soil Frost, Boreal Silviculture and Spring Water Stress in Trees (Ph.D. 2003)
Johan Temnerud, Örebro Univ., Landscape controls on surface water DOC and its ligands (Ph.D. 2005)
Neil Cory, Separating natural from anthropogenic Al in boreal surface waters (Ph.D. 2006)
Martin Erlandsson, Assessment of Acidification (Ph.D. 2009)
Marcus Wallin, Evasion of Greenhouse gases from headwater streams (Ph.D. started 2006)
Rasmus Sorensen, Forest harvest effects on hydrology and methylmercury (Ph.D. started 2006)
Solomon Gebrehiwot, Securing dry season flow in the northwestern highlands of Ethiopia: How much can forest management help as the climate changes? (Ph.D. started 2007)
Karin Eklöf, Effects of Forest Harvest on Water Quality, especially Mercury (Ph.D. started 2007)
Mattias Winterdahl Modeling climate influence on surface water DOC regimes across spatial and temporal scales (Ph.D. started 2007)

Selected publications

(full list of publications)

Bishop, K., Beven. K., Destouni, G., Abrahamsson, K., Andersson, L., Johnsson, R., Rodhe, J., Hjerdt, N. (in press) Nature as the “natural” goal for water management: A Conversation. Ambio.

Bishop, K., I. Buffam, M. Erlandsson, J. Fölster; H. Laudon, J. Seibert, and J. Temnerud.(2008) Aqua Incognita: The Unknown Headwaters. Hydrological Processes 22:1239-1242.

Erlandsson, M., Buffam, I., Fölster, J., Laudon, H., Temnerud, J., Weyhenmeyer, G. and Bishop, K., (2008) 35 years of synchrony in the organic matter concentrations of Swedish rivers explained by variation in flow and sulphate. Global Change Biology. 14:1–8, doi: 10.1111/j.1365-2486.2008.01551.x

Yurova, A., Sirin, A., Buffam, I., Bishop, K., and Laudon, H. (2008).Modeling the DOC output from a boreal mire using the convection dispersion equation: The importance of representing sorption. Water Resources Research, 44, W07411, doi:10.1029/2007WR006523..

Köhler, S.J., Buffam, I., Laudon, H. and Bishop, K. (2008). Intra- and interannual variability of total organic carbon in two contrasting boreal landscape elements. Geophysical Research-Biogeosciences, 113, G03012, doi:10.1029/2007JG000629.

Temnerud, J., Seibert, J., Jansson, M. and Bishop, K. (2007) Spatial variation in discharge and concentrations of organic carbon in a catchment network of boreal streams in northern Sweden. Journal of Hydrology (2007) 342:72– 87.

Buffam, Ishi; Laudon, Hjalmar; Temnerud, Johan; Mörth, Carl-Magnus; Bishop, Kevin.(2007) Landscape-scale variability of acidity and dissolved organic carbon during spring flood in a boreal stream network, J. Geophys. Res., Vol. 112, No. G1, G01022, 10.1029/2006JG000218.

Jonsson, A. Algesten G., Bergström A.-K., Bishop K., Sobek S., Tranvik LJ., Jansson M. (2007) Integrating aquatic carbon fluxes in a boreal catchment carbon budget. Journal of Hydrolgoy 334(1-2)141-150 doi:10.1016/j.jhydrol.2006.10.003

Bishop, K., J. Seibert, S. Köhler and H. Laudon.(2004) Resolving the Double Paradox of rapidly mobilized old water with highly variable responses in runoff chemistry Hydrological Processes. 18:185-189.

Laudon, H., J. Seibert, S. Köhler and K. Bishop. (2004) Hydrological flow paths during snowmelt: Congruence between hydrometric measurements and oxygen-18 in snowmelt, soil water, and runoff. Water Resour. Res. 40 (3), W03102 10.1029/2003WR002455.

Bishop, K. H., H. Laudon and S. Köhler. (2000) Separating the natural and anthropogenic components of spring flood pH decline: A method for areas that are not chronically acidified. Water Resources Research. 36(7): 1873-1884.