Linn Svensson
Swedish University of Agricultural Sciences
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Publication
Featured researches published by Linn Svensson.
European Journal of Wildlife Research | 2017
Vicente Palacios; Enrique Font; Emilio J. García; Linn Svensson; Luis Llaneza; Jens Frank; José Vicente López-Bao
Management decision-making processes require reliable tools providing information on the distribution, abundance, and trend of populations. Wolves vocalize in response to human imitations of howls. Traditionally, this phenomenon has been the basis of a widespread monitoring tool to assess the reproductive status in a wolf pack, as well as to estimate the minimum number of individuals in the pack: the elicited-vocalization technique. However, despite its broad use, only a few attempts to quantify its accuracy have been made so far. Here, we carried out a test to evaluate the accuracy of estimates obtained from the elicited-vocalization technique. We administered “chorus tests” to 205 human subjects, 182 rangers—with different level of experience with wolves—and 23 subjects with no previous experience with the species. We found that the estimates of the number of wolves participating in a chorus were not accurate, regardless of the experience of the listener (the correct number of wolves was only determined in 32% of tests). Listeners, however, identified pups vocalizing 98% of the times when there were pups in the chorus. They also reported the presence of pups when they were not present with a high frequency (71%). Estimating the number of individuals by the unaided human ear is flawed because of the bias inherent in the elicited-vocalization technique. Howling surveys have a low degree of selectivity to confirm the presence of pups. Thus, we make recommendations to improve the elicited-vocalization technique as a tool to monitor the presence of pups.
39 | 2004
Petter Wabakken; Åke Aronson; Thomas H. Strømseth; Håkan Sand; Linn Svensson; Ilpo Kojola
Hystrix-italian Journal of Mammalogy | 2012
Olof Liberg; Åke Aronson; Håkan Sand; Petter Wabakken; Erling Maartmann; Linn Svensson; Mikael Åkesson
Ecological Modelling | 2016
Guillaume Chapron; Camilla Wikenros; Olof Liberg; Petter Wabakken; Øystein Flagstad; Cyril Milleret; Johan Månsson; Linn Svensson; Barbara Zimmermann; Mikael Åkesson; Håkan Sand
Biological Conservation | 2017
José Vicente López-Bao; Jens Frank; Linn Svensson; Mikael Åkesson; Åsa Langefors
Archive | 2014
Andreas Zetterberg; Linn Svensson
Archive | 2013
Linn Svensson; Petter Wabakken; Ilpo Kojola; Erling Maartmann; Thomas H. Strømseth; Mikael Åkesson; Øystein Flagstad; Andreas Zetterberg
48 s. | 2012
Linn Svensson; Petter Wabakken; Ilpo Kojola; Erling Maartmann; Thomas H. Strømseth; Mikael Åkesson; Øystein Flagstad; Andreas Zetterberg
46 s. | 2012
Petter Wabakken; Linn Svensson; Ilpo Kojola; Erling Maartmann; Thomas H. Strømseth; Øystein Flagstad; Mikael Åkesson; Andreas Zetterberg
Archive | 2015
Guillaume Chapron; Camilla Wikenros; Olof Liberg; Linn Svensson; Mikael Åkesson; Johan Månsson; Barbara Zimmermann; Cyril Milleret; Petter Wabakken; Håkan Sand