Journal article
Population response of omnivorous arthropods to plant alternative resources suppress prey populations: A meta-analysis
Ecology (Durham), v 103(5), 3623
01 May 2022
PMID: 34967951
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Omnivory is ubiquitous in ecological communities. Yet, we lack a consensus of how plant alternative resources impact the ability of omnivores to suppress prey populations. Previous work suggests that plant alternative resources can increase, decrease, or have no effect on the magnitude of omnivore-prey interactions. This discrepancy may arise from (1) the ability of omnivore populations to respond to plant alternative resources and (2) identity-specific effects of plant alternative resources. We used a meta-analysis to examine how omnivore population responses and the identity of plant alternative resources affect (1) omnivore predation rates (mainly reported as per capita predation rate) and (2) omnivore impacts on prey population density. Plant alternative resources reduced omnivore predation rate regardless of identity. The suppression of the predation rate by flowers and flowering plants was magnified when pollen alone was tested as the alternative resource. Surprisingly, plant alternative resource availability reduced prey density, suggesting that omnivore predation increased with plant alternative resources. This discrepancy (plant alternative resources not only decreased omnivore predation rates but also decreased prey density) resulted from experimental differences in the ability of omnivore populations to respond to plant alternative resources. In the presence of plant alternative resources, allowing omnivore population responses decreased prey density, while not allowing population responses increased prey density. Because omnivores commonly suppress prey density in the presence of plant alternative resources when population responses of omnivores are allowed, the effectiveness of biological control may depend upon the availability of such resources and the facilitation of population responses.
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Details
- Title
- Population response of omnivorous arthropods to plant alternative resources suppress prey populations: A meta-analysis
- Creators
- Shelby Rinehart - Drexel University, Biodiversity, Earth, and Environmental Science (BEES)Jeremy D. Long - San Diego State University
- Publication Details
- Ecology (Durham), v 103(5), 3623
- Publisher
- Wiley
- Number of pages
- 11
- Grant note
- DGE1321850 / National Science Foundation; National Science Foundation (NSF) Zuckerman STEM Leadership Program Minerva Center for Movement Ecology, Hebrew University of Jerusalem Lady Davis Fellowship Trust, Hebrew University of Jerusalem University of Alabama
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Biodiversity, Earth, and Environmental Science (BEES)
- Web of Science ID
- WOS:000780756800001
- Scopus ID
- 2-s2.0-85127940173
- Other Identifier
- 991021872915404721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Ecology