Taxis-driven pattern formation in a predator-prey model with group defense

DC FieldValueLanguage
dc.contributor.authorKoehnke, Merlin C.
dc.contributor.authorSiekmann, Ivo
dc.contributor.authorMalchow, Horst
dc.date.accessioned2021-12-23T16:08:46Z-
dc.date.available2021-12-23T16:08:46Z-
dc.date.issued2020
dc.identifier.issn1476945X
dc.identifier.urihttps://osnascholar.ub.uni-osnabrueck.de/handle/unios/8448-
dc.description.abstractWe consider a reaction-diffusion(-taxis) predator-prey system with group defense in the prey. Taxis-driven instability can occur if the group defense influences the taxis rate (Wang et al., 2017). We elaborate that this mechanism is indeed possible but biologically unlikely to be responsible for pattern formation in such a system. Conversely, we show that patterns in excitable media such as spatiotemporal Sierpinski gasket patterns occur in the reaction-diffusion model as well as in the reaction-diffusion-taxis model. If group defense leads to a dome shaped functional response, these patterns can have a rescue effect on the predator population in an invasion scenario. Preytaxis with prey repulsion at high prey densities can intensify this mechanism leading to taxis induced persistence. In particular, taxis can increase parameter regimes of successful invasions and decrease minimum introduction areas necessary for a successful invasion. Last, we consider the mean period of the irregular oscillations. As a result of the underlying mechanism of the patterns, this period is two orders of magnitude smaller than the period in the nonspatial system. Counter-intuitively, faster-moving predators lead to lower oscillation periods and eventually to extinction of the predator population. The study does not only provide valuable insights on theoretical spatially explicit predator-prey models with group defense but also comparisons of ecological data with model simulations.
dc.language.isoen
dc.publisherELSEVIER
dc.relation.ispartofECOLOGICAL COMPLEXITY
dc.subjectDIFFUSION
dc.subjectDYNAMICS
dc.subjectEcology
dc.subjectEnvironmental Sciences & Ecology
dc.subjectExcitable medium
dc.subjectGroup defense
dc.subjectPattern formation
dc.subjectPredator invasion
dc.subjectPrey-taxis
dc.subjectPULSES
dc.subjectReaction-diffusion
dc.subjectSYSTEM
dc.subjectTARGET PATTERNS
dc.subjectWAVES
dc.titleTaxis-driven pattern formation in a predator-prey model with group defense
dc.typejournal article
dc.identifier.doi10.1016/j.ecocom.2020.100848
dc.identifier.isiISI:000566489300008
dc.description.volume43
dc.contributor.orcid0000-0002-0706-6307
dc.contributor.researcheridD-7101-2014
dc.identifier.eissn14769840
dc.publisher.placeRADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
dcterms.isPartOf.abbreviationEcol. Complex.
dcterms.oaStatusGreen Accepted
crisitem.author.orcid0000-0002-5806-2760-
crisitem.author.netidMaHo367-
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