About: A mechanistic model for paertial preferences.

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	This study examines a discrete-time spatial individual-based model of a one-predator two-prey system where predators follow the Charnov's optimal diet selection model. Contrary to optimal foraging theory we assume that individual predators have only a local knowledge of prey population densities in the environment. Thus every predator follows prediction of the Charnov's model, ie it includes the less profitable prey type in its diet only provided that the density of the more profitable prey type decreases under certain threshold value. Because the moment at which predators change their diet is different for different predator individuals due to local variations in prey densities, the probability of acceptance of the less profitable prey type changes from the zero-one rule prediction of the optimal foraging theory to a sigmoid-like function. An analogous situation is faced when we consider switching sensu Murdoch.We also compare our results with some other switching functions used in literature. This study examines a discrete-time spatial individual-based model of a one-predator two-prey system where predators follow the Charnov's optimal diet selection model. Contrary to optimal foraging theory we assume that individual predators have only a local knowledge of prey population densities in the environment. Thus every predator follows prediction of the Charnov's model, ie it includes the less profitable prey type in its diet only provided that the density of the more profitable prey type decreases under certain threshold value. Because the moment at which predators change their diet is different for different predator individuals due to local variations in prey densities, the probability of acceptance of the less profitable prey type changes from the zero-one rule prediction of the optimal foraging theory to a sigmoid-like function. An analogous situation is faced when we consider switching sensu Murdoch.We also compare our results with some other switching functions used in literature. (en)
Title	A mechanistic model for paertial preferences. A mechanistic model for paertial preferences. (en)
skos:prefLabel	A mechanistic model for paertial preferences. A mechanistic model for paertial preferences. (en)
skos:notation	RIV/60077395:_____/00:60000047!RIV/2003/AV0/A60003/N
http://linked.open.../vavai/riv/strany	279;290
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA201/98/0227), P(GA201/98/P202), P(VS96086), Z(AV0Z5007907)
http://linked.open...iv/cisloPeriodika	N/A
http://linked.open...vai/riv/dodaniDat	2003
http://linked.open...aciTvurceVysledku	Berec, Luděk Křivan, Vlastimil
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Entomologický ústav AV ČR
http://linked.open...dnocenehoVysledku	703538
http://linked.open...ai/riv/idVysledku	RIV/60077395:_____/00:60000047
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	N/A (en)
http://linked.open.../riv/klicoveSlovo	N/A
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[AABB0267C01C]
http://linked.open...i/riv/nazevZdroje	Teoretical Population Biology
http://linked.open...in/vavai/riv/obor	EH
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Mathematical methods of theoretical population biology Individual-based models in mathematical ecology: construction and analysis Establishment of the Biomathematical Laboratory Directed to Ecology
http://linked.open...UplatneniVysledku	2000
http://linked.open...v/svazekPeriodika	58
http://linked.open...iv/tvurceVysledku	Berec, Luděk Křivan, Vlastimil
http://linked.open...n/vavai/riv/zamer	The use of insects for quality assessment and possible management of the ecosystems in Central Europe
issn	0040-5809
number of pages	12 (xsd:int)

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