Adaptive foraging does not always lead to more complex food webs

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F10%3A00345443" target="_blank" >RIV/60077344:_____/10:00345443 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12310/10:00011876

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Adaptive foraging does not always lead to more complex food webs

Popis výsledku v původním jazyce

Recent modeling studies suggest that adaptivity in foraging decisions of consumers makes food webs more complex. Models these studies are based on share two features: parameters are chosen uniformly for all species and adaptive foraging is described by the search image model. We relax these assumptions: we allow parameters to vary among the species and use the diet choice model as an alternative model of adaptive foraging. We show that (i) for species-independent parameter values for which the search image model demonstrates a significant effect of adaptive foraging on food web complexity, the diet choice model produces no such effect; (ii) the effect of adaptive foraging through the search image model attenuates when parameter values are not species-independent; and (iii) for the diet choice model we observe no effect of adaptive foraging on food web complexity. All these observations suggest that adaptive foraging does not always lead to more complex food webs.

Název v anglickém jazyce

Adaptive foraging does not always lead to more complex food webs

Popis výsledku anglicky

Recent modeling studies suggest that adaptivity in foraging decisions of consumers makes food webs more complex. Models these studies are based on share two features: parameters are chosen uniformly for all species and adaptive foraging is described by the search image model. We relax these assumptions: we allow parameters to vary among the species and use the diet choice model as an alternative model of adaptive foraging. We show that (i) for species-independent parameter values for which the search image model demonstrates a significant effect of adaptive foraging on food web complexity, the diet choice model produces no such effect; (ii) the effect of adaptive foraging through the search image model attenuates when parameter values are not species-independent; and (iii) for the diet choice model we observe no effect of adaptive foraging on food web complexity. All these observations suggest that adaptive foraging does not always lead to more complex food webs.

Druh

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

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

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Projekt

<a href="/cs/project/IAA100070601" target="_blank" >IAA100070601: Matematické modelování biologických sítí</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název periodika

Journal of Theoretical Biology

ISSN

0022-5193

e-ISSN

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Svazek periodika

266

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

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Kód UT WoS článku

000281127800001

EID výsledku v databázi Scopus

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