Rune Knudsen

TL;DR: In this paper, the authors studied nine Norwegian lakes in three watercourses, which each harboured pairs of divergent whitefish morphs and compared the morphology and life history of these morphs, documented the extent of genetic differentiation between them and contrasted the niche use of sympatric morphs along both the habitat and resource axes.

TL;DR: It is shown, for predators feeding on prey that exhibit food-dependent growth, that culling of fish prey may promote predator recovery and represents an experimental demonstration of an alternative stable state in a large-scale field system.

TL;DR: The study provides a highly resolved food web from the pelagic zone of a subarctic lake and demonstrates that their incorporation may substantially alter considerations of food-web structure and functioning and suggests that the linkage density of free-living species affects their exposure to trophically transmitted parasites.

TL;DR: The profundal morph of Fjellfrøsvatn therefore utilize a food resource niche that neither the littoral morph nor comparable monomorphic populations exploit, which suggests that intraspecific resource competition has driven incipient ecological speciation of the Profundal charr of FJellfr Norwegian.

TL;DR: It is demonstrated that quantitative food consumption represents the connective link between population density and individual growth rates, apparently being highly influenced by intraspecific competition for limited resources.