Thomas Vogler

• Østbye, Kjartan; Hassve, Marius Hagen; Tamayo, Ana-Maria Peris; Hagenlund, Mari; Vogler, Thomas & Præbel, Kim (2020). “And if you gaze long into an abyss, the abyss gazes also into thee”: four morphs of Arctic charr adapting to a depth gradient in Lake Tinnsjøen . Evolutionary Applications. ISSN 1752-4571. 13(6), s. 1240–1261. doi: 10.1111/eva.12983. Fulltekst i vitenarkiv

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• Zimmermann, Barbara & Vogler, Thomas (2021). Drone field demonstrations in Norway.
• Pedersen, Simen & Vogler, Thomas (2017). Forsøk i Nærøy skal finne løsninger mot rådyrdød i slottonna. [Avis]. Namdalsavisa.
• Zimmermann, Barbara; Tofastrud, Morten & Vogler, Thomas (2017). Storfe på skogsbeite - Sommeren 2016 .
• Zimmermann, Barbara; Tofastrud, Morten; Vogler, Thomas; Bakmann, Ole & Skogholm, Bjørn (2016). Cattle in the woods: Sustainable beef cattle production on forest pastures.
• Vogler, Thomas; Altansukh, N.; Ganbaatar, Oyunsaikhan; Sukhbaatar, Dalai; Devineau, Olivier & Kaczensky, Petra (2023). Steppe ungulate count in Great Gobi B Strictly Protected area 2022. Høgskolen i Innlandet. ISSN 978-82-8380-400-3. Vis sammendrag

  The plains of Great Gobi B Strictly Protected Area (subsequently “Great Gobi B”) in southwestern Mongolia are home to three endangered wild ungulates, khulan (Equus hemionus), takhi (Equus ferus przewalskii), and goitered gazelle (Gazella subgutturosa). With Mongolia holding the largest populations of these species, their conservation is of global importance. To assess the effectiveness of conservation efforts, robust survey methods are needed to monitor population development. In late summer 2022 we conducted the 3rd plains ungulate count in Great Gobi B to estimate population size of khulan and goitered gazelle and describe population development since the counts in 2010 and 2015 and tested the method for estimating the growing population of reintroduced Przewalski’s horses. We conducted Distance Sampling point counts at 101 observation points over 6 counting events (at 19:00, 7:00, 9:00, 11:00, 13:00, and 15:00) at each observation point. During each counting event the observers scanned the surroundings using binoculars and registered species, number of animals, time, bearing and distance for each observation. Over the 606 counts, we observed 5,744 khulan, 3,150 gazelles and 922 Przewalski’s horses. Using these observations, we created global models (over all observation points and counting events) using the distance analysis framework and selected models with the best fit based on AIC values. Populations estimates for 2022 were 5,204 (95% CI = 2,121 – 12,771) khulan, 10,980 (95% CI = 7,473 – 16,132) goitered gazelles, and 1,288 (95% CI = 213 – 7,776) Przewalski’s horses within the 13,000 km2 survey area. Population estimates of both khulan and goitered gazelle suggested an increase from 2010 to 2015, while the 2022 estimated is closer to the 2010 estimates for khulan and in between for goitered gazelles. However, confidence intervals, especially for khulan, are large and population development cannot be determined conclusively. The uncertainty in the khulan estimate for 2022 was caused by the combination of a highly clumped distribution due to draught conditions and a large variation in group sizes. Goitered gazelles were more evenly distributed and group sizes less variable. Estimating Przewalski’s horse population resulted in a gross overestimate because of the knowledge rangers had about the location of Przewalski’s horse groups from intensive weekly monitoring. The data suggests that they specifically looked for groups, as Przewalski’s horses were detected almost equally likely over all distance categories. Confidence intervals were large because the population is still small (numbering just over 400) and distribution was also highly clumped due to the drought condition. The 2022 population estimates for khulan and goitered gazelles and the comparison with the estimates from 2010 and 2015 should be regarded as preliminary because: 1) The 3 surveys were analysed using slightly different distance analysis frameworks and 2) Distance Sampling does not take the spatial distribution of groups into account and we plan to explore such methods before we will reanalyse the 3 surveys within the same analysis framework.

• Kjønsberg, Marius; Pedersen, Simen; Vogler, Thomas & Johnsen, Kaja (2022). Kurs for taksering av hønsefugl. Linjetaksering med hund – Distance sampling. Høgskolen i Innlandet Evenstad. ISSN 978-82-8380-316-7. 2022(3).
• Mathisen, Karen Marie & Vogler, Thomas (2020). Hva gjør vi når det blir bråstopp i fôring av hjortevilt? - Erfaringer fra Stor-Elvdal. Høgskolen i Innlandet. ISSN 978-82-8380-238-2. 2020(20).
• Vogler, Thomas & Kjønsberg, Marius (2017). Elgbeitetaksering Finnemarka 2017. Høgskolen i Innlandet.

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