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Top-down effects of foraging decisions on local, landscape and regional biodiversity of resources (DivGUD)
- Foraging by consumers acts as a biotic filtering mechanism for biodiversity at the trophic level of resources. Variation in foraging behaviour has cascading effects on abundance, diversity, and functional trait composition of the community of resource species. Here we propose diversity at giving-up density (DivGUD), i.e. when foragers quit exploiting a patch, as a novel concept and simple measure quantifying cascading effects at multiple spatial scales. In experimental landscapes with an assemblage of plant seeds, patch residency of wild rodents decreased local alpha-DivGUD (via elevated mortality of species with large seeds) and regional gamma-DivGUD, while dissimilarity among patches in a landscape (beta-DivGUD) increased. By linking theories of adaptive foraging behaviour with community ecology, DivGUD allows to investigate cascading indirect predation effects, e.g. the ecology-of-fear framework, feedbacks between functional trait composition of resource species and consumer communities, and effects of inter-individual differencesForaging by consumers acts as a biotic filtering mechanism for biodiversity at the trophic level of resources. Variation in foraging behaviour has cascading effects on abundance, diversity, and functional trait composition of the community of resource species. Here we propose diversity at giving-up density (DivGUD), i.e. when foragers quit exploiting a patch, as a novel concept and simple measure quantifying cascading effects at multiple spatial scales. In experimental landscapes with an assemblage of plant seeds, patch residency of wild rodents decreased local alpha-DivGUD (via elevated mortality of species with large seeds) and regional gamma-DivGUD, while dissimilarity among patches in a landscape (beta-DivGUD) increased. By linking theories of adaptive foraging behaviour with community ecology, DivGUD allows to investigate cascading indirect predation effects, e.g. the ecology-of-fear framework, feedbacks between functional trait composition of resource species and consumer communities, and effects of inter-individual differences among foragers on the biodiversity of resource communities.…
Verfasserangaben: | Jana EccardORCiDGND, Clara Mendes FerreiraORCiDGND, Andres Peredo Arce, Melanie DammhahnORCiDGND |
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DOI: | https://doi.org/10.1111/ele.13901 |
ISSN: | 1461-0248 |
Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/34713543 |
Titel des übergeordneten Werks (Englisch): | Ecology letters |
Verlag: | Wiley-Blackwell |
Verlagsort: | Oxford [u.a.] |
Publikationstyp: | Wissenschaftlicher Artikel |
Sprache: | Englisch |
Datum der Erstveröffentlichung: | 28.10.2022 |
Erscheinungsjahr: | 2022 |
Datum der Freischaltung: | 29.01.2024 |
Freies Schlagwort / Tag: | biodiversity; cascading effects; foraging behaviour; functional traits; giving-up density; landscape of fear; optimal foraging; patch use |
Band: | 25 |
Ausgabe: | 1 |
Seitenanzahl: | 14 |
Erste Seite: | 3 |
Letzte Seite: | 16 |
Fördernde Institution: | German Research FoundationGerman Research Foundation (DFG) |
Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Biochemie und Biologie |
DDC-Klassifikation: | 5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie |
Peer Review: | Referiert |
Publikationsweg: | Open Access / Hybrid Open-Access |
Lizenz (Deutsch): | CC-BY-NC-ND - Namensnennung, nicht kommerziell, keine Bearbeitungen 4.0 International |