@article{fdi:010091475, title = {{A} causal trait model for explaining foliar water uptake capacity}, author = {{M}atos, {I}.{S}. and {R}ifai, {S}.{W}. and {G}ouveia, {W}.{F}. and {O}liveras {M}enor, {I}mma and {M}antuano, {D}. and {R}osado, {B}.{H}.{P}.}, editor = {}, language = {{ENG}}, abstract = {{Q}uestions: {P}lants largely vary in their capacity for foliar water uptake ({FWU}), that is, the capacity to increase leaf water content by directly absorbing water from leaf-wetting events. {C}limate change will reduce leaf wetting and increase drought events. {T}herefore, we need a better understanding of the underlying traits and mechanisms that facilitate {FWU}. {L}ocation: {S}easonally dry tropical montane grasslands in {B}razil ({C}ampos de {A}ltitude). {M}ethods: {W}e measured {FWU} and leaf traits related to wettability, surface conductance, water potential and water storage on up to 55 plant species. {B}y using {D}irect {A}cyclic {G}raph theory and {B}ayesian modelling, we tested how those leaf traits affect {FWU}. {R}esults: {W}e found that stomatal conductance largely explained interspecific variation in {FWU}, which was also favoured in species with hydrophilic leaves, high cuticular conductance, more negative leaf water potentials, low dry-matter content, isohydric behaviour, and more elastic cell walls. {C}onclusions: {D}ue to the existence of trade-offs, not all species exhibit an optimal combination of traits that favours {FWU}. {I}nstead, co-occurring species have achieved a similar capacity for {FWU} through distinct trait combinations. {C}onsequently, species engaged in {FWU} may exhibit differential vulnerabilities to climate change as they can cope with drought using other strategies beside {FWU}.}, keywords = {}, booktitle = {}, journal = {{J}ournal of {V}egetation {S}cience}, volume = {35}, numero = {3}, pages = {e13258 [13 ]}, ISSN = {1100-9233}, year = {2024}, DOI = {10.1111/jvs.13258}, URL = {https://www.documentation.ird.fr/hor/fdi:010091475}, }