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Anders Bondemark, Erik Johansson, Fredrik Kopsch
Pág. 463 - 477
Are there option values for transport services? A few studies have tried to answer this question through various stated preference methods, but we do not know much about its magnitude in different contexts. In this paper, we summarize the theory on optio...
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Nicolas Vidal, Susanne L. Amsinck, Vítor Gonçalves, José M. Neto Azevedo, Liselotte S. Johansson, Kirsten S. Christoffersen, Torben L. Lauridsen, Martin Søndergaard, Rikke Bjerring, Frank Landkildehus, Klaus P. Brodersen, Mariana Meerhoff and Erik Jeppesen
Disentangling the effects of climate change on nature is one of the main challenges facing ecologists nowadays. Warmer climates forces strong effects on lake biota for fish, leading to a reduction in size, changes in diet, more frequent reproduction, and...
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Martin Søndergaard, Torben L. Lauridsen, Liselotte S. Johansson and Erik Jeppesen
Biomanipulation by fish removal has been used in many shallow lakes as a method to improve lake water quality. Here, we present and analyse 30 years of chemical and biological data from the shallow and 16 ha large Lake Væng, Denmark, which has been bioma...
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Korhan Özkan, Erik Jeppesen, Thomas A. Davidson, Rikke Bjerring, Liselotte S. Johansson, Martin Søndergaard, Torben L. Lauridsen, Jens-Christian Svenning
Pág. 1 - 23
A two-decade (1989?2008) time series of lake phyto- and zooplankton, water characteristics and climate in 17 Danish lakes was analysed to examine the long term changes and the effects of lake restoration efforts. The analyses of the pair-wise correlation...
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Karl-Erik Johansson, Robert Axelsson, Ngolia Kimanzu, Samuel O. Sassi, Eliza Bwana and Robert Otsyina
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Karl-Erik Johansson, Robert Axelsson and Ngolia Kimanzu
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Tomas Svensson, Erik Alerstam, Dmitry Khoptyar, Jonas Johansson, Staffan Folestad, and Stefan Andersson-Engels
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Linda S. Johansson, Bo Leckner, Claes Tullin, Lars-Erik Åmand, and Kent Davidsson
Pág. 3005 - 3015
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