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      The use of chronosequences in studies of ecological succession and soil development

      Walker, Lawrence R.; Wardle, David A.; Bardgett, Richard D.; Clarkson, Bruce D.
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      Walker-et-al_-JEcol-2010-0062-2 March 2010.pdf
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      DOI
       10.1111/j.1365-2745.2010.01664.x
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      Walker, L.R., Wardle, D.A., Bardgett, R.D. & Clarkson, B.D. (2010). The use of chronosequences in studies of ecological succession and soil development. Journal of Ecology, 98(4), 725-736.
      Permanent Research Commons link: https://hdl.handle.net/10289/3990
      Abstract
      1. Chronosequences and associated space-for-time substitutions are an important and often necessary tool for studying temporal dynamics of plant communities and soil development across multiple time-scales. However, they are often used inappropriately, leading to false conclusions about ecological patterns and processes, which has prompted recent strong criticism of the approach. Here, we evaluate when chronosequences may or may not be appropriate for studying community and ecosystem development.

      2. Chronosequences are appropriate to study plant succession at decadal to millennial time-scales when there is evidence that sites of different ages are following the same trajectory. They can also be reliably used to study aspects of soil development that occur between temporally linked sites over time-scales of centuries to millennia, sometimes independently of their application to shorter-term plant and soil biological communities.

      3. Some characteristics of changing plant and soil biological communities (e.g. species richness, plant cover, vegetation structure, soil organic matter accumulation) are more likely to be related in a predictable and temporally linear manner than are other characteristics (e.g. species composition and abundance) and are therefore more reliably studied using a chronosequence approach.

      4. Chronosequences are most appropriate for studying communities that are following convergent successional trajectories and have low biodiversity, rapid species turnover and low frequency and severity of disturbance. Chronosequences are least suitable for studying successional trajectories that are divergent, species-rich, highly disturbed or arrested in time because then there are often major difficulties in determining temporal linkages between stages.

      5. Synthesis. We conclude that, when successional trajectories exceed the life span of investigators and the experimental and observational studies that they perform, temporal change can be successfully explored through the judicious use of chronosequences.
      Date
      2010
      Type
      Journal Article
      Publisher
      Wiley-Blackwell
      Rights
      This is an author’s submitted version of an article published in the Journal of Ecology. © 2010 The Authors. Journal compilation © 2010 British Ecological Society
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      • Science and Engineering Papers [3030]
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