@inproceedings{fdi:25614, title = {{E}cology of flooded rice fields}, author = {{W}atanabe, {I}. and {R}oger, {P}ierre-{A}rmand}, editor = {}, language = {{ENG}}, abstract = {{S}ome of the biological concepts and findings relevant to the study of the flooded rice field as an ecosystem are reviewed. {T}he flooded rice field is an artificial ecosystem characterized by extreme instability resulting from frequent destruction of the environment by farming practices. {T}his inhibits the successive development toward marsh and has made monocropping of rice possible for centuries. {H}owever, the instability of the ecosystem during the crop has discouraged quantitative approaches by limnologists and ecologists. {T}herefore topics dealt with here are not supported by a large volume of data. {S}tudies conducted in freshwater ecosystems (lakes, ponds) may help us understand flooded rice fields, but extrapolation is not possible; {T}he floodwater has been neglected in most agronomic, chemical, and soil studies. {I}ts effect on fertility and other properties of flooded rice soils is stressed. {M}ajor biological activities in floodwater and soil, recycling of nutrients, and interactions between floodwater and soil are reviewed. ({R}{\'e}sum{\'e} d'auteur)}, keywords = {{RIZIERE} ; {ECOLOGIE} ; {BIOMASSE} ; {MICROORGANISME} ; {CARACTERISTIQUE} {CHIMIQUE} ; {MATIERE} {ORGANIQUE} ; {BIBLIOGRAPHIE} ; {ECOSYSTEME} {AQUATIQUE} ; {EAU} {D}'{IMMERSION} ; {SOL} {INONDE} ; {INTERFACE} {EAU} {SOL} ; {PHILIPPINES} ; {MANILLE}}, numero = {}, pages = {229--243}, booktitle = {{W}etland soils : characterization, classification and utilization : proceedings of the workshop}, year = {1985}, URL = {https://www.documentation.ird.fr/hor/fdi:25614}, }