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. 2023 Mar;92(3):635-647.
doi: 10.1111/1365-2656.13875. Epub 2023 Jan 10.

Predator co-occurrence in alpine and Arctic tundra in relation to fluctuating prey

Lars Rød-Eriksen  1   2 , Siw T Killengreen  3 , Dorothee Ehrich  4 , Rolf A Ims  4 , Ivar Herfindal  2 , Arild M Landa  1 , Nina E Eide  1
Affiliations

Predator co-occurrence in alpine and Arctic tundra in relation to fluctuating prey

Lars Rød-Eriksen et al. J Anim Ecol. 2023 Mar.

Abstract

Large carnivores influence ecosystem dynamics in multiple ways, for example, by suppressing meso-carnivores and providing carrions for smaller scavengers. Loss of large carnivores is suggested to cause meso-carnivore increase and expansion. Moreover, competition between meso-carnivores may be modified by the presence of larger carnivores. In tundra ecosystems, the smallest meso-carnivore, the Arctic fox, has experienced regional declines, whereas its larger and competitively superior congener, the red fox, has increased, potentially due to changes in the abundance of apex predators. We explored if variation in the occurrence of wolverine and golden eagle impacted the occurrence and co-occurrence of the Arctic fox and red fox in relation to varying abundances of small rodents within the Scandinavian tundra. We applied multi-species occupancy models to an extensive wildlife camera dataset from 2011-2020 covering 98 sites. Daily detection/non-detection of each species per camera trap site and study period (late winter; March-May) was stacked across years, and species occupancy was related to small rodent abundance while accounting for time of the year and status of simulated carcass. The Arctic fox was more likely to co-occur with the red fox when the wolverine was present and less likely to co-occur with the red fox when golden eagles were present and the wolverine was absent. Red foxes increased in occupancy when co-occurring with the larger predators. The Arctic fox responded more strongly to small rodent abundance than the red fox and co-occurred more often with the other species at carcasses when rodent abundance was low. Our findings suggest that the interspecific interactions within this tundra predator guild appear to be surprisingly intricate, driven by facets of fear of predation, interspecific mediation and facilitation, and food resource dynamics. These dynamics of intraguild interactions may dictate where and when conservation actions targeted towards the Arctic fox should be implemented.

Keywords: carnivores; co-occurrence; competition; intraguild interaction; occupancy; predation; resource availability; tundra.

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References

REFERENCES

    1. Angerbjörn, A., Eide, N. E., Dalén, L., Elmhagen, B., Hellström, P., Ims, R. A., Killengreen, S. T., Landa, A., Meijer, T., Mela, M., Niemimaa, J., Norén, K., Tannerfeldt, M., Yoccoz, N. G., Henttonen, H., & Pettorelli, N. (2013). Carnivore conservation in practice: Replicated management actions on a large spatial scale. Journal of Applied Ecology, 50(1), 59-67. https://doi.org/10.1111/1365-2664.12033
    1. Angerbjörn, A., Tannerfeldt, M., & Erlinge, S. (1999). Predator-prey relationships: Arctic foxes and lemmings. Journal of Animal Ecology, 68(1), 34-49. https://doi.org/10.1046/j.1365-2656.1999.00258.x
    1. Bischof, R., Milleret, C., Dupont, P., Chipperfield, J., Brøseth, H., & Kindberg, J. (2019). RovQuant: Estimating density, abundance and population dynamics of bears, wolverines and wolves in Scandinavia. MINA fagrapport 63. Norwegian University of Life Sciences. https://hdl.handle.net/11250/2649424
    1. Chapron, G., Kaczensky, P., Linnell, J. D. C., von Arx, M., Huber, D., Andrén, H., López-Bao, J. V., Adamec, M., Álvares, F., Anders, O., Balciauskas, L., Balys, V., Bedo, P., Bego, F., Blanco, J. C., Breitenmoser, U., Brøseth, H., Bufka, L., Bunikyte, R., … Boitani, L. (2014). Recovery of large carnivores in Europe's modern human-dominated landscapes. Science, 346(6216), 1517-1519. https://doi.org/10.1126/science.1257553
    1. Dahl, E. L., Nilsen, E. B., Brøseth, H., & Tovmo, M. (2015). Estimating the number of breeding pairs of golden eagle based on known occurrence in Norway for the period 2010-2014. NINA report 1158. Norwegian Insititute for Nature Research. http://hdl.handle.net/11250/2371355 (In Norwegian with English summary).

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