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    Seasonality and predictability shape temporal species diversity

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    Tonkin_et_al-2017-Ecology.pdf
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    Author
    Tonkin, Jonathan D
    Bogan, Michael T
    Bonada, Núria
    Rios-Touma, Blanca
    Lytle, David A
    Affiliation
    Univ Arizona, Sch Nat Resources & Environm
    Issue Date
    2017-01-31
    Keywords
    climate
    communities
    desert annuals
    migratory waterfowl
    periodicity
    seasons
    stream invertebrates
    temporal beta diversity
    turnover
    wavelets
    
    Metadata
    Show full item record
    Publisher
    WILEY-BLACKWELL
    Citation
    Tonkin, J. D., Bogan, M. T., Bonada, N., Rios‐Touma, B., & Lytle, D. A. (2017). Seasonality and predictability shape temporal species diversity. Ecology, 98(5), 1201-1216.
    Journal
    ECOLOGY
    Rights
    Copyright © 2017 by the Ecological Society of America
    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
    Temporal environmental fluctuations, such as seasonality, exert strong controls on biodiversity. While the effects of seasonality are well known, the predictability of fluctuations across years may influence seasonality in ways that are less well understood. The ability of a habitat to support unique, non‐nested assemblages of species at different times of the year should depend on both seasonality (occurrence of events at specific periods of the year) and predictability (the reliability of event recurrence) of characteristic ecological conditions. Drawing on tools from wavelet analysis and information theory, we developed a framework for quantifying both seasonality and predictability of habitats, and applied this using global long‐term rainfall data. Our analysis predicted that temporal beta diversity should be maximized in highly predictable and highly seasonal climates, and that low degrees of seasonality, predictability, or both would lower diversity in characteristic ways. Using stream invertebrate communities as a case study, we demonstrated that temporal species diversity, as exhibited by community turnover, was determined by a balance between temporal environmental variability (seasonality) and the reliability of this variability (predictability). Communities in highly seasonal mediterranean environments exhibited strong oscillations in community structure, with turnover from one unique community type to another across seasons, whereas communities in aseasonal New Zealand environments fluctuated randomly. Understanding the influence of seasonal and other temporal scales of environmental oscillations on diversity is not complete without a clear understanding of their predictability, and our framework provides tools for examining these trends at a variety of temporal scales, seasonal and beyond. Given the uncertainty of future climates, seasonality and predictability are critical considerations for both basic science and management of ecosystems (e.g., dam operations, bioassessment) spanning gradients of climatic variability.
    ISSN
    0012-9658
    PubMed ID
    28144975
    DOI
    10.1002/ecy.1761
    Version
    Final published version
    Sponsors
    U.S. Department of Defense SERDP grant [RC-2511]
    ae974a485f413a2113503eed53cd6c53
    10.1002/ecy.1761
    Scopus Count
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