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dc.contributor.authorWikan, Arild
dc.date.accessioned2022-04-11T13:42:52Z
dc.date.available2022-04-11T13:42:52Z
dc.date.issued2015-06-17
dc.description.abstractBy use of a nonlinear stage-structured population model the role of cannibalism and the combined role of cannibalism and harvest have been explored. Regarding the model, we prove that in most parts of parameter space it is permanent. We also show that the transfer from stability to nonstationary dynamics always occurs when the unique stable equilibrium undergoes a supercritical Neimark-Sacker (Hopf) bifurcation. Moreover, the dynamic consequences of catch depend not only on which part of the population (immature or mature) is exposed to increased harvest pressure but also on which part of the immature population (newborns, older immature individuals) suffers from cannibalism. Indeed, if only newborns are exposed to cannibalism an enlargement of harvest pressure on the mature part of the population may act in a stabilizing fashion. On the other hand, whenever the whole immature population is exposed to cannibalism there are parts in parameter space where increased harvest on the mature population acts in a destabilizing fashion.en_US
dc.identifier.citationWikan A. On the Interplay between Cannibalism and Harvest in Stage-Structured Population Models. Journal of Marine Biology. 2015;2015en_US
dc.identifier.cristinIDFRIDAID 1258783
dc.identifier.doi10.1155/2015/580520
dc.identifier.issn1687-9481
dc.identifier.issn1687-949X
dc.identifier.urihttps://hdl.handle.net/10037/24755
dc.language.isoengen_US
dc.publisherHindawien_US
dc.relation.journalJournal of Marine Biology
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2015 The Author(s)en_US
dc.titleOn the Interplay between Cannibalism and Harvest in Stage-Structured Population Modelsen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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