Swedish University of Agricultural Sciences
Description of the organization
SLU is a university focusing on the development of learning and expertise in areas concerning biological resources and biological production. SLU offers educational programmes at Bachelor, Master and PhD levels. About 3 300 undergraduates and 800 postgraduate students are enrolled at SLU; and a total of 3 200 people are employed.
Expertise and experience of the organization
Effects of climate change on forest production, soil carbon sequestration and water quality are prioritised research areas at SLU. The university hosts several long-term field experiments, in which forest management practices and nutrient application rates are being investigated. These experiments are invaluable for model testing. At one of these experimental sites, Flakaliden, there is an on-going soil warming study. This study is unique in terms of size of the warming treatment (total 400 m2, which include middle-aged spruce trees) and of time (start 1995). Valuable information on soil respiration, tree growth and root production exists for the first period (3-6 years) of treatment. New measurements, including DOC leaching, will be made during 2008-2009, financed by a national research council. The Flakaliden soil warming experiment will be one of the CARBO-Extreme main sites. SLU serves as the national data host for lake and watercourse systems. The databases include time series of over 30 years in lakes with monthly resolution from over 100 watercourses. There are an additional 20 watercourses with high resolution data (weekly to daily) during periods of high flow over a period of 5 to 20 years. SLU also serves as data host for the Swedish forest soil inventory, which comprises about 23500 permanent sample plots in a stratified national grid system that are reanalysed within a 10 year cycle (measurements started 1983).
Selected reference projects
Key scientific / technical personnel
Dan Berggren Kleja, Professor of Soil Chemistry. He is working with carbon turnover in forest soils, particularly focusing on DOC dynamics. He is main responsible for the new Flakaliden measurements 2008-2009. Sune Linder, Professor of Forest Ecology. Long experience from ecological and tree physiological work related to carbon sequestration and climate change. He is the ‘father’ of the Flakaliden experimental site. Dr. Monika Strömgren, Responsible for the soil respiration measurements at Flakaliden. Dr. Magnus Svensson, Ecosystem modeling; C and N dynamics in forests. Dr. Mats Fröberg, Focus on DOC; responsible for soil C14 measurements at Flakaliden. Kevin Bishop, Professor of Environmental Assessment. Much of his research has focused on forest hydrology and the influence of forests on coupled hydrological/biogeochemical cycle
Responsibilities in CARBO-Extreme
Selected recent relevant publications
Berggren Kleja D, Svensson M, Majdi H, Jansson P-E, Langvall O, Bergkvist B, Johansson M-B, Weslien P, Truus L, Lindroth A, Ågren GI, Pools and fluxes of carbon in three Norway spruce ecosystems along a climatic gradient in Sweden . Biogeochemistry 89(1), 7-25, 2008. [http://www.springerlink.com/content/d535627457678780/[|link to publisher]]
Svensson M, Jansson P-E, Berggren Kleja D 2008. Modelling soil C sequestration in spruce forest ecosystems along a Swedish transect based on current conditions. Biogeochemistry 89(1), 95-119, 2008. link to publisher
Eliasson PE, McMurtrie RE, Pepper DA, Strömgren M, Linder S & Ågren GI 2005. The response of heterotrophic CO2-flux to soil warming. Global Change Biology 11(1): 167-181. link to publisher
Erlandsson M, Buffam I, Fölster J, Laudon H, Temnerud J, Weyhenmeyer G, Bishop K, (accepted) 35 years of synchrony in the organic matter concentrations of Swedish rivers explained by variation in flow and sulphate. Global Change Biology 14(5), 1191 - 1198, 2008. link to publisher