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@ARTICLE{Sack:151783,
      author       = {Sack, L. and Scoffoni, Ch. and John, G. P. and Poorter,
                      Hendrik and Mason, C. M. and Mendez-Alonzo, R. and Donovan,
                      L. A.},
      title        = {{L}eaf mass per area is independent of vein length per
                      area: avoiding pitfalls when modelling phenotypic
                      integration (reply to {B}londer et al. 2014)},
      journal      = {The journal of experimental botany},
      volume       = {65},
      number       = {18},
      issn         = {0022-0957},
      address      = {Oxford},
      publisher    = {Univ. Press},
      reportid     = {FZJ-2014-01665},
      pages        = {5115-5123},
      year         = {2014},
      abstract     = {It has been recently proposed that leaf vein length per
                      area ( VLA ) is the major determinant of leaf mass per area
                      ( LMA ), and would thereby determine other traits of the
                      leaf economic spectrum (LES), such as photosynthetic rate
                      per mass (A mass), nitrogen concentration per mass (N mass)
                      and leaf lifespan (LL). In a previous paper we argued that
                      this ‘vein origin’ hypothesis was supported only by a
                      mathematical model with predestined outcomes, and that we
                      found no support for the ‘vein origin’ hypothesis in our
                      analyses of compiled data. In contrast to the ‘vein
                      origin’ hypothesis, empirical evidence indicated that VLA
                      and LMA are independent mechanistically, and VLA (among
                      other vein traits) contributes to a higher photosynthetic
                      rate per area (A area), which scales up to driving a higher
                      A mass, all independently of LMA, N mass and LL. In their
                      reply to our paper, Blonder et al. (2014) raised questions
                      about our analysis of their model, but did not address our
                      main point, that the data did not support their hypothesis.
                      In this paper we provide further analysis of an extended
                      data set, which again robustly demonstrates the mechanistic
                      independence of LMA from VLA, and thus does not support the
                      ‘vein origin’ hypothesis. We also address the four
                      specific points raised by Blonder et al. (2014) regarding
                      our analyses. We additionally show how this debate provides
                      critical guidance for improved modelling of LES traits and
                      other networks of phenotypic traits that determine plant
                      performance under contrasting environments.},
      cin          = {IBG-2},
      ddc          = {580},
      cid          = {I:(DE-Juel1)IBG-2-20101118},
      pnm          = {89582 - Plant Science (POF2-89582)},
      pid          = {G:(DE-HGF)POF2-89582},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000343182800002},
      pubmed       = {pmid:25118296},
      doi          = {10.1093/jxb/eru305},
      url          = {https://juser.fz-juelich.de/record/151783},
}