% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Cendrero:808946,
      author       = {Cendrero, Pilar and Moran, M. Susan and Papuga, Shirley A.
                      and Thorp, K. R. and Alonso, L. and Moreno, J. and
                      Ponce-Campos, G. and Rascher, U. and Wang, G.},
      title        = {{P}lant chlorophyll fluorescence: active and passive
                      measurements at canopy and leaf scales with different
                      nitrogen treatments},
      journal      = {The journal of experimental botany},
      volume       = {67},
      number       = {1},
      issn         = {1460-2431},
      address      = {Oxford},
      publisher    = {Oxford Univ. Press},
      reportid     = {FZJ-2016-02460},
      pages        = {275 - 286},
      year         = {2016},
      abstract     = {Most studies assessing chlorophyll fluorescence (ChlF) have
                      examined leaf responses to environmental stress conditions
                      using active techniques. Alternatively, passive techniques
                      are able to measure ChlF at both leaf and canopy scales.
                      However, the measurement principles of both techniques are
                      different, and only a few datasets concerning the
                      relationships between them are reported in the literature.
                      In this study, we investigated the potential for
                      interchanging ChlF measurements using active techniques with
                      passive measurements at different temporal and spatial
                      scales. The ultimate objective was to determine the limits
                      within which active and passive techniques are comparable.
                      The results presented in this study showed that active and
                      passive measurements were highly correlated over the growing
                      season across nitrogen treatments at both canopy and
                      leaf-average scale. At the single-leaf scale, the seasonal
                      relation between techniques was weaker, but still
                      significant. The variability within single-leaf measurements
                      was largely related to leaf heterogeneity associated with
                      variations in CO2 assimilation and stomatal conductance, and
                      less so to variations in leaf chlorophyll content, leaf size
                      or measurement inputs (e.g. light reflected and emitted by
                      the leaf and illumination conditions and leaf spectrum).
                      This uncertainty was exacerbated when single-leaf analysis
                      was limited to a particular day rather than the entire
                      season. We concluded that daily measurements of active and
                      passive ChlF at the single-leaf scale are not comparable.
                      However, canopy and leaf-average active measurements can be
                      used to better understand the daily and seasonal behaviour
                      of passive ChlF measurements. In turn, this can be used to
                      better estimate plant photosynthetic capacity and therefore
                      to provide improved information for crop management.Key
                      words},
      cin          = {IBG-2},
      ddc          = {580},
      cid          = {I:(DE-Juel1)IBG-2-20101118},
      pnm          = {582 - Plant Science (POF3-582) / 252 - Sustainable Plant
                      Production in a Changing Environment (POF3-252)},
      pid          = {G:(DE-HGF)POF3-582 / G:(DE-HGF)POF3-252},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000367816300020},
      pubmed       = {pmid:26482242},
      doi          = {10.1093/jxb/erv456},
      url          = {https://juser.fz-juelich.de/record/808946},
}