Blar i forfatter "Ek, Malin"

Viser treff 1-3 av 3

    • Can novel pest outbreaks drive ecosystem transitions in northern-boreal birch forest? 

      Vindstad, Ole Petter Laksforsmo; Jepsen, Jane Uhd; Ek, Malin; Pepi, Adam A.; Ims, Rolf Anker (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-04)
      <p>1.The boreal biome exhibits distinct alternative ecosystem states with high and low levels of tree cover. Insect outbreaks facilitated by climate warming could potentially drive transitions from high to low tree cover states. We investigated whether two key premises for such outbreak‐induced transitions – critical thresholds (tipping points) and positive feedbacks that could maintain alternative ...

    • Elevationally biased avian predation as a contributor to the spatial distribution of geometrid moth outbreaks in sub-arctic mountain birch forest 

      Pepi, Adam A.; Vindstad, Ole Petter Laksforsmo; Ek, Malin; Jepsen, Jane Uhd (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-04-03)
      1. Population dynamics and interactions that vary over a species’ range are of particular importance in the context of latitudinal clines in biological diversity.Winter moth (Operophtera brumata) and autumnal moth (Epirrita autumnata) are two species of eruptive geometrids that vary widely in outbreak tendency over their range, which generally increases from south to north and with elevation. 2. ...

    • Salvage logging of mountain birch after geometrid outbreaks: Ecological context determines management outcomes 

      Vindstad, Ole Petter Laksforsmo; Jepsen, Jane Uhd; Klinghardt, Moritz; Ek, Malin; Ims, Rolf Anker (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-12-01)
      Outbreaks of pest insects occasionally cause mortality of entire forest stands. Salvage logging of affected stands is the most common management response to such events. Logging may aid stand recovery by increasing the production and establishment of saplings, or stimulating the production of basal sprouts in sprouting tree species. However, the outcome of logging may depend on the ecological ...