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Ecol Evol. 2016 May 06;6(11):3796-3807. doi: 10.1002/ece3.2039. eCollection 2016 Jun.

Plant density can increase invertebrate postdispersal seed predation in an experimental grassland community.

Ecology and evolution

Jan-Hendrik Dudenhöffer, Gesine Pufal, Christiane Roscher, Alexandra-Maria Klein

Affiliations

  1. Nature Conservation and Landscape Ecology Institute of Earth and Environmental Sciences University of Freiburg Tennenbacherstr. 4 79106 Freiburg Germany.
  2. UFZ Department of Physiological Diversity Helmholtz Centre for Environmental Research Permoserstrasse 15 04318 Leipzig Germany.
  3. German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig Deutscher Platz 5a 04103 Leipzig Germany.

PMID: 27231530 PMCID: PMC4864194 DOI: 10.1002/ece3.2039

Abstract

Janzen-Connell effects are negative effects on the survival of a plant's progeny at high conspecific densities or close to its conspecifics. Although the role of Janzen-Connell effects on the maintenance of plant diversity was frequently studied, only few studies targeted Janzen-Connell effects via postdispersal seed predation in temperate grassland systems. We examined effects of conspecific density (abundance of conspecific adult plants) on postdispersal seed predation by invertebrates of three grassland species (

Keywords: Arthropods; Janzen–Connell effects; granivory; plant species richness; plant–insect interaction; slugs

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