@article{fdi:010085368, title = {{D}emography of the dominant perennial grass species of a humid {A}frican savanna}, author = {{K}offi, {K}. {F}. and {N}'{D}ri, {A}. {B}. and {K}onar{\'e}, {S}. and {S}rikanthasamy, {T}. and {L}ata, {J}. {C}. and {K}onat{\'e}, {S}. and {K}onan, {M}. and {B}arot, {S}{\'e}bastien}, editor = {}, language = {{ENG}}, abstract = {{P}erennial grasses are the main source of fuel during fires in savannas. {T}he demography of these grasses likely varies between species although they have the same general architecture and coexist in savannas. {H}owever, very few studies compare their demography. {S}imilarly, their demography likely varies between years because of the variability in weather condition and fire intensity. {W}e described and compared the demography and life-cycle of the four dominant perennial grass species ({A}ndropogon canaliculatus, {A}ndropogon schirensis, {H}yparrhenia diplandra and {L}oudetia simplex) of the {L}amto savanna ({I}vory {C}oast) and assessed the influence of their demographic features (stasis, fecundity, growth, fragmentation and retrogression) on this demography. {G}rass species were monitored over three consecutive years (2015-2016, 2016-2017 and 2017-2018) on three 5 m x 10 m plots. {W}e used a size-classified matrix model with 5 circumference classes (3-10 cm, 10-20 cm, 20-35 cm, 35-50 cm and >50 cm). {R}esults showed differences in the age-based parameters, asymptotic growth rates (lambda s) and elasticities of the lambda s of the grass species. {T}he population of {A}. canaliculatus, {A}. schirensis and {H}. diplandra were slowly declining while {L}. simplex was significantly declining. {T}here were noticeable year-to-year variations in the demography of these four species. {T}he most important demographic parameter influencing {A}s was the stasis in all species, while retrogression and fragmentation contributed to a relative homogeneity of ages between size-classes 2 to 5. {T}his study provides new insights about the demography of {G}uinean savanna grasses that could be used to describe the mechanisms of their coexistence, and inform fire management policies.}, keywords = {{ZONE} {GUINEENNE} ; {D}emographic matrix model ; {G}uinean savannas ; {P}erennial tussock grass ; {P}opulation growth rate ; {S}ize-classified matrix model ; {COTE} {D}'{IVOIRE} ; {LAMTO} {RESERVE}}, booktitle = {}, journal = {{A}cta {O}ecologica : {I}nternational {J}ournal of {E}cology}, volume = {114}, numero = {}, pages = {103816 [12 ]}, ISSN = {1146-609{X}}, year = {2022}, DOI = {10.1016/j.actao.2022.103816}, URL = {https://www.documentation.ird.fr/hor/fdi:010085368}, }