Bergen Open Research Archive

Period lenght in cyclic animal populations

Bergen Open Research Archive

Show simple item record Högstedt, Göran eng Seldal, Tarald eng Breistøl, Arild eng 2008-02-11T07:23:37Z 2008-02-11T07:23:37Z 2005 eng
dc.identifier.citation Ecology 2005 69 (2): 373-378. Copyright by the Ecological Society of America en
dc.identifier.issn 0012-9615 eng
dc.description.abstract Although cyclic animal dynamics have long been a focus of scientific interest, the variable cycle lengths are poorly understood. Based on a review of the literature, we suggest that period length in animals showing multiannual cycles is related to the life span of their food plant rather than to any trait of the animal, such as mass or fecundity. We envisage that this pattern is brought about by a prolonged mobilization of induced defenses in longer lived plants, which can better afford periods of low reproductive output than can short-lived plants. On the basis of this hypothesis we expect animals with similar diets to show similar cycle lengths, irrespective of taxonomy and size. A path analysis, on the vertebrate herbivores, shows that 92% of the variation in cycle length is explained by foodplant longevity and that body mass adds little to this. en
dc.language.iso eng eng
dc.publisher Ecological Society of America eng
dc.subject Bird eng
dc.subject Cyclic herbivore populations eng
dc.subject Food-plant longevity eng
dc.subject Herbivory eng
dc.subject Insect eng
dc.subject Mammals eng
dc.subject Multiannual cycles eng
dc.subject Plant life span eng
dc.title Period lenght in cyclic animal populations eng
dc.type Peer reviewed eng
dc.type Journal article eng
dc.subject.nsi VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 nob
bora.peerreviewed Peer reviewed eng

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