@article{fdi:010069448, title = {{A}llometric projections of time-related growth trajectories of two coexisting dipterocarp canopy species in {I}ndia}, author = {{A}ntin, {C}. and {L}e {B}ec, {J}. and {A}yyappan, {N}. and {R}amesh, {B}. {R}. and {P}{\'e}lissier, {R}apha{\¨e}l}, editor = {}, language = {{ENG}}, abstract = {{B}ackground: {T}he{W}estern {G}hats of {I}ndia contain the westernmost dipterocarp forests of {A}sia. {H}owever, only a few dipterocarp tree species actually coexist in the forest canopy among which {V}ateria indica and {D}ipterocarpus indicus are the most common. {T}he mechanisms contributing to the coexistence of these phylogenetically closely related species have not been identified. {A}ims: {W}e investigated the time- related growth trajectories in diameter, height and crown size of these two species in the {U}ppangala {P}ermanent {S}ample {P}lot to determine if trade-offs in their three-dimensional developmental strategies could contribute to their long-term coexistence. {M}ethods: {F}rom annual diameter growth data of 692 trees > 9.55 cm in diameter at breast height over a 21-year period, we developed time-related diameter growth models for the two species, accounting for local density-dependent competition effects and topography. {C}ombining the diameter growth models with static stem and crown allometries, we projected time-related tree growth trajectories in height and crown size. {R}esults: {W}hile both species can reach similar dimensions, {V}. indica grows much faster, or at least as fast as {D}. indicus in diameter, height and crown size in all the observed situations. {B}oth species respond similarly to topography, but {V}. indica appears to be more responsive to local density-dependent competition than {D}. indicus. {F}inally, {V}. indica shows higher mortality and recruitment rates and a greater basal area increase than {D}. indicus. {C}onclusions: {T}hese results refute our hypothesis that {D}. indicus coexists with the outperformer {V}. indica by a growth strategy allowing selected individuals in favourable conditions to reach the canopy more quickly than their competitors. {T}he current coexistence of the two dipterocarp species at {U}ppangala appears not to be at a static equilibrium; {V}. indica probably being in a phase of canopy stand colonisation.}, keywords = {density-dependent competition ; {D}ipterocarpus indicus ; stem and crown ; dimensions ; terrain slope intensity ; terrain aspect ; {V}ateria indica ; {INDE}}, booktitle = {}, journal = {{P}lant {E}cology and {D}iversity}, volume = {9}, numero = {5-6}, pages = {603--614}, ISSN = {1755-0874}, year = {2016}, DOI = {10.1080/17550874.2016.1266403}, URL = {https://www.documentation.ird.fr/hor/fdi:010069448}, }