Winter management of Californian rice fields for waterbirds

agua animal salvaje animal sauvage arroz birds burning ciconiiformes conservation de la nature crop residues degradation depth eau enfouissement enterrado flooding ganso geese gestion des eaux gruiformes incorporation inondation land use legislation nature conservation oie oiseau oryza sativa profondeur profundidad quema residuos de cosechas rice riz stubble terre humide utilisation des terres waste management water water management wetlands wild animals