A mechanistic model for paertial preferences.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077395%3A_____%2F00%3A60000047" target="_blank" >RIV/60077395:_____/00:60000047 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

A mechanistic model for paertial preferences.

Popis výsledku v původním jazyce

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 l

Název v anglickém jazyce

A mechanistic model for paertial preferences.

Popis výsledku anglicky

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 l

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2000

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Teoretical Population Biology

ISSN

0040-5809

e-ISSN

—

Svazek periodika

58

Číslo periodika v rámci svazku

N/A

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

—

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—