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    Tree size and climatic water deficit control root to shoot ratio in individual trees globally

    80281.pdf (340.3Kb)
    Access Status
    Open access
    Authors
    Ledo, A.
    Paul, K.I.
    Burslem, D.F.R.P.
    Ewel, J.J.
    Barton, C.
    Battaglia, M.
    Brooksbank, K.
    Carter, J.
    Eid, T.H.
    England, J.R.
    Fitzgerald, A.
    Jonson, J.
    Mencuccini, M.
    Montagu, K.D.
    Montero, G.
    Mugasha, W.A.
    Pinkard, E.
    Roxburgh, S.
    Ryan, C.M.
    Ruiz-Peinado, R.
    Sochacki, S.
    Specht, A.
    Wildy, D.
    Wirth, C.
    Zerihun, Ayalsew
    Chave, J.
    Date
    2017
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Ledo, A. and Paul, K.I. and Burslem, D.F.R.P. and Ewel, J.J. and Barton, C. and Battaglia, M. and Brooksbank, K. et al. 2018. Tree size and climatic water deficit control root to shoot ratio in individual trees globally. New Phytologist. 217 (1): pp. 8-11.
    Source Title
    New Phytologist
    DOI
    10.1111/nph.14863
    ISSN
    0028-646X
    Faculty
    Faculty of Science and Engineering
    School
    School of Molecular and Life Sciences (MLS)
    Remarks

    This is the peer reviewed version of the following article: Ledo, A. and Paul, K.I. and Burslem, D.F.R.P. and Ewel, J.J. and Barton, C. and Battaglia, M. and Brooksbank, K. et al. 2018. Tree size and climatic water deficit control root to shoot ratio in individual trees globally. New Phytologist. 217 (1): pp. 8-11., which has been published in final form at https:// doi.org/10.1111/nph.14863. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

    URI
    http://hdl.handle.net/20.500.11937/80199
    Collection
    • Curtin Research Publications
    Abstract

    Plants acquire carbon from the atmosphere and allocate it among different organs in response to environmental and developmental constraints (Hodge, 2004; Poorter et al ., 2012). One classic example of differential allocation is the relative investment into aboveground vs belowground organs, captured by the root : shoot ratio (R : S ; Cairns et al ., 1997). Optimal partitioning theory suggests that plants allocate more resources to the organ that acquires the most limiting resource (Reynolds & Thornley, 1982; Johnson & Thornley, 1987). Accordingly, plants would allocate more carbon to roots if the limiting resources are belowground, that is water and nutrients, and would allocate more carbon aboveground when the limiting resource is light or CO2. This theory has been supported by recent research showing that the R : S of an individual plant is modulated by environmental factors (Poorter et al ., 2012; Fatichi et al ., 2014). However, understanding the mechanisms underpinning plant allocation and its response to environmental factors is an active field of research (Delpierre et al ., 2016; Paul et al ., 2016), and it is likely that plant size and species composition have an effect on R : S . Accounting for these sources of variation is an important challenge for modelling (Franklin et al ., 2012).

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