@article{fdi:010071422,
  title = {{E}levated {CO}2 mediates the short-term drought recovery of ecosystem function in low-diversity grassland systems},
  author = {{N}iboyet, {A}. and {B}ardoux, {G}. and {B}arot, {S}{\'e}bastien and {B}loor, {J}. {M}. {G}.},
  editor = {},
  language = {{ENG}},
  abstract = {{E}cosystems are expected to experience simultaneous environmental changes. {T}his study examines the interactive effects of atmospheric {CO}2 and plant community composition on grassland ecosystem functioning after a severe drought. {M}onocultures of the grass {D}actylis glomerata were compared to a four-species grassland community under ambient and elevated {CO}2, with or without drought. {G}reenhouse gas fluxes, {C} and {N} pools in plants and soil were measured over a 55-day, post-rewetting period for all mesocosms. {E}xperimental drought reduced aboveground biomass production, but increased soil inorganic {N} and dissolved organic {C} ({DOC}) across {CO}2 and community composition treatments. {F}ollowing rewetting, droughted mesocosms had lower ecosystem respiration and higher {N}2{O} emissions. {A}fter 55 days, negative drought effects persisted on above- and belowground {C} stocks and root {N} stocks. {E}levated {CO}2 reduced the magnitude of drought effects on ecosystem respiration, {N}2{O} fluxes and plant {C}:{N} ratios but increased drought-induced changes to soil {DOC}. {T}he four-species mixture buffered ecosystem respiration from drought effects, but showed higher drought-induced increases in soil inorganic {N} shortly after rewetting. {E}levated {CO}2 mitigates the effects of extreme drought on multiple grassland functions. {I}n contrast, grassland composition appears to have mainly additive effects with drought and elevated {CO}2 in our simple sown systems.},
  keywords = {{C}limate change ; {CO}2 fluxes ; {E}xtreme events ; {G}rassland production ; {N}itrous oxide emissions ; {P}lant-soil interactions},
  booktitle = {},
  journal = {{P}lant and {S}oil},
  volume = {420},
  numero = {1-2},
  pages = {289--302},
  ISSN = {0032-079{X}},
  year = {2017},
  DOI = {10.1007/s11104-017-3377-8},
  URL = {https://www.documentation.ird.fr/hor/fdi:010071422},
}