| Asymmetric and frequency-dependent pollinator-mediated interactions may influence competitive displacement in two vernal pool plants. | |
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MedLine Citation:
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PMID: 23134452 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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A plant species immigrating into a community may experience a rarity disadvantage due to competition for the services of pollinators. These negative reproductive interactions have the potential to lead to competitive displacement or exclusion of a species from a site. In this study, we used one- and two-species arrays of potted plants to test for density and frequency dependence in pollinator-mediated and above-ground intraspecific and interspecific competition between two species of Limnanthes that have overlapping ranges, but rarely occur in close sympatry. There were asymmetric competitive effects; the species responded differently to their frequency within 16-plant replacement series arrays. Limnanthes douglasii rosea experienced stronger reductions in lifetime and per-flower fertility, likely due to pollinator-mediated competition with Limnanthes alba. This effect may be linked to asymmetrical competition through heterospecific pollen transfer. This study demonstrates that pollinator-mediated competition may discourage establishment of L. d. rosea in sites already occupied by its congener. |
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Authors:
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Ryan Briscoe Runquist; Maureen L Stanton; Rebecca Irwin |
Publication Detail:
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Type: LETTER Date: 2012-11-8 |
Journal Detail:
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Title: Ecology letters Volume: - ISSN: 1461-0248 ISO Abbreviation: Ecol. Lett. Publication Date: 2012 Nov |
Date Detail:
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Created Date: 2012-11-8 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101121949 Medline TA: Ecol Lett Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© 2012 Blackwell Publishing Ltd/CNRS. |
Affiliation:
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Department of Plant Biology, University of Minnesota, 250 Biological Sciences Center, 1445 Gortner Avenue, St. Paul, MN, 55108, USA; Department of Evolution and Ecology, Center for Population Biology, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA. |
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