Number of the records: 1  

Trait and density mediated indirect interactions in simple food webs

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    SYSNO ASEP0100930
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JOstatní články
    TitleTrait and density mediated indirect interactions in simple food webs
    TitleSrovnání nepřímé interakce v potravních sítích vznkající jednak na základě změn chování organizmů a jednak změn v jejich početnosti
    Author(s) Křivan, Vlastimil (ENTU-I)
    Schmith, O. J. (US)
    Source TitleOikos. - : Wiley - ISSN 0030-1299
    Roč. 107, č. 2 (2004), s. 239-250
    Number of pages12 s.
    Languageeng - English
    CountryDK - Denmark
    KeywordsPredator-prey dynamics ; trophic interactions ; antipredator behavior
    Subject RIVEH - Ecology, Behaviour
    R&D ProjectsGA201/03/0091 GA ČR - Czech Science Foundation (CSF)
    CEZAV0Z5007907 - ENTU-I, BC-A
    AnnotationThis article compares indirect trait-mediated interactions in simple resource--consumer--predator food webs with those that are density-mediated. It focuses on two well documented responses of consumers to predation risk: decrease in consumer activity and habitat switch. These behavioral effects are transmitted to resources and they cause similar indirect effects as those which are mediated by density changes in consumers. Three indirect interactions are studied in this article: trophic cascades, apparent competition, and exploitative competition. The article shows that trait-mediated effects on species equilibrial densities are similar to those of density-mediated but they are often highly non-linear. Thus, they may have potential for even stronger impact on food webs then those which are density mediated.
    WorkplaceInstitute of Entomology (until 2005)
    ContactHelena Musilová, musilova@entu.cas.cz, Tel.: 387 775 216
    Year of Publishing2005
Number of the records: 1  

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