@article{fdi:010046216,
  title = {{P}recipitation as driver of carbon fluxes in 11 {A}frican ecosystems},
  author = {{M}erbold, {L}. and {A}rdo, {J}. and {A}rneth, {A}. and {S}choles, {R}.{J}. and {N}ouvellon, {Y}. and de {G}randcourt, {A}. and {A}rchibald, {S}. and {B}onnefond, {J}.{M}. and {B}oulain, {N}icolas and {B}rueggemann, {N}. and {B}ruemmer, {C}. and {C}appelaere, {B}ernard and {C}eschia, {E}. and {E}l-{K}hidir, {H}.{A}.{M}. and {E}l-{T}ahir, {B}.{A}. and {F}alk, {U}. and {L}loyd, {J}. and {K}ergoat, {L}. and {L}e {D}antec, {V}. and {M}ougin, {E}. and {M}uchinda, {M}. and {M}ukelabai, {M}. {M}. and {R}amier, {D}avid and {R}oupsard, {O}. and {T}imouk, {F}ranck and {V}eenendaal, {E}.{M}. and {K}utsch, {W}.{L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his study reports carbon and water fluxes between the land surface and atmosphere in eleven different ecosystems types in {S}ub-{S}aharan {A}frica, as measured using eddy covariance ({EC}) technology in the first two years of the {C}arbo{A}frica network operation. {T}he ecosystems for which data were available ranged in mean annual rainfall from 320 mm ({S}udan) to 1150 mm ({R}epublic of {C}ongo) and include a spectrum of vegetation types (or land cover) (open savannas, woodlands, croplands and grasslands). {G}iven the shortness of the record, the {EC} data were analysed across the network rather than longitudinally at sites, in order to understand the driving factors for ecosystem respiration and carbon assimilation, and to reveal the different water use strategies in these highly seasonal environments. {V}alues for maximum net carbon assimilation rates (photosynthesis) ranged from -12.5 mu mol {CO}2 m(-2) s(-1) in a dry, open {M}illet cropland ({C}-4-plants) up to -48 mu mol {CO}2 m(-2) s(-1) for a tropical moist grassland. {M}aximum carbon assimilation rates were highly correlated with mean annual rainfall (r(2)=0.74). {M}aximum photosynthetic uptake rates ({F}p(max)) were positively related to satellite-derived f({APAR}). {E}cosystem respiration was dependent on temperature at all sites, and was additionally dependent on soil water content at sites receiving less than 1000 mm of rain per year. {A}ll included ecosystems dominated by {C}-3-plants, showed a strong decrease in 30-min assimilation rates with increasing water vapour pressure deficit above 2.0 k{P}a.},
  keywords = {},
  booktitle = {},
  journal = {{B}iogeosciences},
  volume = {6},
  numero = {6},
  pages = {1027--1041},
  ISSN = {1726-4170},
  year = {2009},
  URL = {https://www.documentation.ird.fr/hor/fdi:010046216},
}