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Regulation, cycles and stability in northern carnivore‐herbivore systems: back to first principles
In studies on dynamics of northern predator-prey systems, two assumptions are often made. First, the bifurcation from stable to cyclic dynamics is seen as a consequence of changingExpand
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Population fluctuations of voles in North Fennoscandian tundra : contrasting dynamics in adjacent areas with different habitat composition
During 1991-1996. we studied population fluctuations of microtine rodents (primarily Clethrionomys rufocanus). of their winter food plants, and of their predators in a low arctic habitat complex,Expand
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Spatial Patterns and Dynamic Responses of Arctic Food Webs Corroborate the Exploitation Ecosystems Hypothesis (EEH)
According to the exploitation ecosystems hypothesis (EEH), productive terrestrial ecosystems are characterized by community‐level trophic cascades, whereas unproductive ecosystems harbor food‐limitedExpand
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Habitat selection of coexisting competitors: a study of small mustelids in northern Norway
The coexistence of two very similar species, stoat and least weasel, has puzzled many researchers. From their ecology it is expected that they do not coexist, not locally at least, and still theyExpand
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Intraguild predation and interspecific co-existence between predatory endotherms
Background: According to the current predominant view, intraguild predation leads to the replacement of intermediate predators from highly productive habitats, whereas top predators and intermediatExpand
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Outlines of food webs in a low arctic tundra landscape in relation to three theories on trophic dynamics
Outlines of food webs in a low arctic tundra landscape in relation to three theories on trophic dynamics
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Structure and Dynamics of Arctic-Subarctic Grazing Webs in Relation to Primary Productivity
Current discussion on structure and dynamics of food webs includes two seemingly incompatible views on the role of energy supply for food chain length. Authors of food web reviews (Pimm, 1979, 1982,Expand
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Predators in low arctic tundra and their impact on community structure and dynamics
The abundance of predators and their impact on ecosystem dynamics is a vividly discussed topic in current ecology. In my studies, incorporating field observations, field experiments and theoreticalExpand
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Predation structures the low arctic tundra arthropod community
The abundance of predators and their impact on ecosystem dynamics is a vividly discussed topic in current ecology. In my studies, incorporating field observations, field experiments and theoreticalExpand
Biomass patterns in European tundra as a test of hypotheses on trophic dynamics
The abundance of predators and their impact on ecosystem dynamics is a vividly discussed topic in current ecology. In my studies, incorporating field observations, field experiments and theoreticalExpand