Blar i forfatter "Soininen, Eeva M"

Viser treff 21-28 av 28

    • Transferability of biotic interactions: temporal consistency of arctic plant-rodent relationships is poor 

      Soininen, Eeva M; Henden, John-André; Ravolainen, Virve; Yoccoz, Nigel Gilles; Bråthen, Kari Anne; Killengreen, Siw Turid; Ims, Rolf Anker (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-09-17)
      Variability in biotic interaction strength is an integral part of food web functioning. However, the consequences of the spatial and temporal variability of biotic interactions are poorly known, in particular for predicting species abundance and distribution. The amplitude of rodent population cycles (i.e., peak-phase abundances) has been hypothesized to be determined by vegetation properties ...

    • Trophic interactions and abiotic factors drive functional and phylogenetic structure of vertebrate herbivore communities across the Arctic tundra biome 

      Speed, James David Mervyn; Skjelbred, Ina Åsnes; Barrio, Isabel C.; Martin, Michael David; Berteaux, Dominique; Bueno, Guillermo; Christie, Katie; Forbes, Bruce C.; Forbey, Jennifer; Fortin, Daniel; Grytnes, John-Arvid; Hoset, Katrine Skamfer; Lecomte, Nicolas; Marteinsdottir, Bryndis; Mosbacher, Jesper Bruun; Pedersen, Åshild Ø.; Ravolainen, Virve; Rees, Eileen C.; Skarin, Anna; Sokolova, Natalya; Thornhill, Andrew H; Tombre, Ingunn; Soininen, Eeva M (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-29)
      Communities are assembled from species that evolve or colonise a given geographic region, and persist in the face of abiotic conditions and interactions with other species. The evolutionary and colonisation histories of communities are characterised by phylogenetic diversity, while functional diversity is indicative of abiotic and biotic conditions. The relationship between functional and phylogenetic ...

    • Under the snow: a new camera trap opens the white box of subnivean ecology 

      Soininen, Eeva M; Jensvoll, Ingrid; Killengreen, Siw Turid; Ims, Rolf Anker (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-05-14)
      Snow covers the ground over large parts of the world for a substantial portion of the year. Yet very few methods are available to quantify biotic variables below the snow, with most studies of subnivean ecological processes relying on comparisons of data before and after the snow cover season. We developed a camera trap prototype to quantify subnivean small mammal activity. The trap consists of a ...

    • Using machine learning to provide automatic image annotation for wildlife camera traps in the Arctic 

      Thom, Håvard; Bjørndalen, John Markus; Kleiven, Eivind Flittie; Soininen, Eeva M; Killengreen, Siw Turid; Ehrich, Dorothee; Ims, Rolf Anker; Anshus, Otto; Horsch, Alexander (Chapter; Bokkapittel, 2017)
      The arctic tundra is considered the terrestrial biome expected to be most impacted by climate change, with temperatures projected to increase as much as 10 °C by the turn of the century. The Climate-ecological Observatory for Arctic Tundra (COAT) project monitors the climate and ecosystems using several sensor types. We report on results from projects that automate image annotations from two of the ...

    • Using subnivean camera traps to study arctic small mammal community dynamics during winter 

      Mölle, Jonas; Kleiven, Eivind Flittie; Ims, Rolf Anker; Soininen, Eeva M (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-12)
      Small rodents are a key indicator to understand the effect of rapidly changing winter climate on Arctic tundra ecosystems. However, monitoring rodent populations through the long Arctic winter by means of conventional traps has, until now, been hampered by snow cover and harsh ambient conditions. Here, we conduct the first extensive assessment of the utility of a newly developed camera trap to ...

    • What are the effects of herbivore diversity on tundra ecosystems? A systematic review protocol 

      Barrio, Isabel C.; Barbero-Palacios, Laura; Kaarlejärvi, Elina; Speed, James David Mervyn; Heiðmarsson, Starri; Hik, David S.; Soininen, Eeva M (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-31)
      Background: Changes in the diversity of herbivore communities can strongly infuence the functioning of northern ecosystems. Diferent herbivores have diferent impacts on ecosystems because of diferences in their diets, behaviour and energy requirements. The combined efects of diferent herbivores can in some cases compensate each other but lead to stronger directional changes elsewhere. However, ...

    • Will borealization of Arctic tundra herbivore communities be driven by climate warming or vegetation change? 

      Speed, James David Mervyn; Chimal-Ballesteros, J. Adrian; Martin, Michael D.; Barrio, Isabel C.; Vuorinen, Katariina Elsa Maria; Soininen, Eeva M (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-30)
      Poleward shifts in species distributions are expected and frequently observed with a warming climate. In Arctic ecosystems, the strong warming trends are associated with increasing greenness and shrubification. Vertebrate herbivores have the potential to limit greening and shrub advance and expansion on the tundra, posing the question of whether changes in herbivore communities could partly mediate ...

    • Within and between breeding-season changes in contaminant occurrence and body condition in the Antarctic breeding south polar skua 

      Midthaug, Hilde Karin; Hitchcock, Daniel James; Bustnes, Jan Ove; Polder, Anuschka; Descamps, Sebastien; Tarroux, Arnaud; Soininen, Eeva M; Borgå, Katrine (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-24)
      The Antarctic ecosystem represents a remote region far from point sources of pollution. Still, Antarctic marine predators, such as seabirds, are exposed to organohalogen contaminants (OHCs) which may induce adverse health effects. With increasing restrictions and regulations on OHCs, the levels and exposure are expected to decrease over time. We studied south polar skua (<i>Catharacta maccormicki</i>), ...