@article{fdi:010079796,
  title = {{T}errestrial laser scanning reveals convergence of tree architecture with increasingly dominant crown canopy position},
  author = {{M}artin-{D}ucup, {O}. and {P}loton, {P}ierre and {B}arbier, {N}icolas and {T}akoudjou, {S}. {M}. and {M}ofack, {G}. and {K}amdem, {N}. {G}. and {F}ourcaud, {T}. and {S}onke, {B}. and {C}outeron, {P}ierre and {P}{\'e}lissier, {R}apha{\¨e}l},
  editor = {},
  language = {{ENG}},
  abstract = {{T}o fulfil their growth and reproductive functions, trees develop a three-dimensional structure that is subject to both internal and external constraints. {T}his is reflected by the unique architecture of each individual at a given time. {A}ddressing the crown dimensions and topological structure of large tropical trees is challenging considering their complexity, size and longevity. {T}errestrial laser scanning ({TLS}) technology offers a new opportunity for characterising and comparing these properties across a large number of individuals and species. {I}n the present study, we specifically developed topology and geometry metrics of crown architecture from {TLS} data and investigated how they correlated with metrics of tree and crown form, crown position and shade tolerance. {F}ifty-nine trees belonging to 14 coexisting canopy species in semideciduous forests of {C}ameroon were scanned with {TLS} and reconstructed using quantitative structural models ({QSM}s). {T}he species belonged to different shade-tolerance groups and were sampled in different crown positions. {C}rown-form metrics and branch topology metrics were quantified from the {TLS} data, and principal component analysis ({PCA}) was used to study how the 59 sampled trees were distributed along axes of architectural diversity. {A}llometric scaling parameters derived from {W}est {B}rown and {E}nquist ({WBE}) metabolic theory were also quantified from the {QSM}s, and their correlations with the {PCA} axes were evaluated. {T}he results revealed that the branch topology and crown-form metrics were not correlated since similar topologies could lead to contrasting crown forms. {C}rown form, but not branch topology, changed with tree shade tolerance, while convergence in tree topology and towards expected {WBE} parameters was observed for all trees reaching dominant crown positions independent of species shade tolerance. {T}his convergence is interpreted as resulting from a liberation effect of canopy trees from side-shading constraints, leading to crown development processes through sequential reiteration.},
  keywords = {large trees ; liberation effect ; {L}i{DAR} ; quantitative structural model ; shade tolerance ; {WBE} model ; {CAMEROUN}},
  booktitle = {},
  journal = {{F}unctional {E}cology},
  volume = {34},
  numero = {12},
  pages = {2442--2452},
  ISSN = {0269-8463},
  year = {2020},
  DOI = {10.1111/1365-2435.13678},
  URL = {https://www.documentation.ird.fr/hor/fdi:010079796},
}