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    Noisy communities and signal detection: why do foragers visit rewardless flowers?

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    RSTB-2019-0486_R1.pdf
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    Description:
    Final Accepted Manuscript
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    Author
    Lichtenberg, Elinor M
    Heiling, Jacob M
    Bronstein, Judith L
    Barker, Jessica L
    Affiliation
    Univ Arizona, Dept Ecol & Evolutionary Biol
    Issue Date
    2020-05-18
    Keywords
    display trait overlap
    Foraging
    pollination
    probability density function
    rewardless flowers
    Signal Detection Theory
    
    Metadata
    Show full item record
    Publisher
    ROYAL SOC
    Citation
    Lichtenberg EM, Heiling JM, Bronstein JL, Barker JL. 2020 Noisy communities and signal detection: why do foragers visit rewardless flowers? Phil. Trans. R. Soc. B 375: 20190486. http://dx.doi.org/10.1098/rstb.2019.0486
    Journal
    PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
    Rights
    Copyright © 2020 The Author(s) Published by the Royal Society. All rights reserved.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    Floral communities present complex and shifting resource landscapes for flower-foraging animals. Strong similarities among the floral displays of different plant species, paired with high variability in reward distributions across time and space, can weaken correlations between floral signals and reward status. As a result, it should be difficult for foragers to discriminate between rewarding and rewardless flowers. Building on signal detection theory in behavioural ecology, we use hypothetical probability density functions to examine graphically how plant signals pose challenges to forager decision-making. We argue that foraging costs associated with incorrect acceptance of rewardless flowers and incorrect rejection of rewarding ones interact with community-level reward availability to determine the extent to which rewardless and rewarding species should overlap in flowering time. We discuss the evolutionary consequences of these phenomena from both the forager and the plant perspectives. This article is part of the theme issue 'Signal detection theory in recognition systems: from evolving models to experimental tests'.
    Note
    12 month embargo; published online: 18 May 2020
    ISSN
    0962-8436
    PubMed ID
    32420846
    DOI
    10.1098/rstb.2019.0486
    Version
    Final accepted manuscript
    ae974a485f413a2113503eed53cd6c53
    10.1098/rstb.2019.0486
    Scopus Count
    Collections
    UA Faculty Publications

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