@incollection{fdi:38316,
  title = {{T}he floodwater biology of tropical wetland rice fields},
  author = {{R}oger, {P}ierre-{A}rmand and {K}urihara, {Y}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he first part of the review deals with the components of the ecosystem (floodwater, photosynthetic aquatic biomass, and fauna), their properties and activies. {V}ariations of the major physical and chemical properties of the floodwater (temperature, p{H}, 02 concentration, {N} content...) during the crop cycle are summarized. {T}he section on photosynthetic aquatic biomass considers composition, nutrient contribution, and effects on {N} dynamics, namely : biological {N}2 fixation, {N} immobilization, {N} recycling, {N} accumulation at the soil surface, {N} supply to rice crop, and {N} losses by {NH}3 volatilization in relation to p{H} increase due to photosynthetic activity in the floodwater. {T}he section on fauna emphasizes grazing and nutrient recycling by ostracods and snails, and the role of tubificid worms on floodwater ecology. {T}he second part deals with the agronomic management of the floodwater ecosystem. {I}t reviews cultural practices that take advantage of the agronomic potential of the floodwater ecosystem (decreasing losses due to {NH}3 volatization, promoting photodependent {BNF}, recycling of nutrients), and the effects of crop intensification on floodwater ecology and possible related effects on soil fertility. ({R}{\'e}sum{\'e} d'auteur)},
  keywords = {{RIZIERE} ; {ECOLOGIE} ; {ALGUE} ; {FIXATION} {BIOLOGIQUE} {DE} {L}'{AZOTE} ; {CYCLE} {DE} {L}'{AZOTE} ; {MICROBIOLOGIE} {DU} {SOL} ; {FAUNE} {DU} {SOL} ; {FERTILISATION} {DU} {SOL} ; {PESTICIDE} ; {EAU} {D}'{IMMERSION} ; {BIOMASSE} {PHOTOSYNTHETIQUE} {AQUATIQUE}},
  booktitle = {{S}oil management for sustainable rice production in the tropics},
  numero = {2},
  pages = {211--233},
  address = {{B}angkok},
  publisher = {{IBSRAM}},
  series = {{IBSRAM} {M}onograph},
  year = {1991},
  URL = {https://www.documentation.ird.fr/hor/fdi:38316},
}