r.reclass.area
r.reclass.area.lesser - Reclassifies a raster layer, selecting areas lower than a user specified size
Raster (r.*)
ParameterRaster|input|Input raster layer|False
ParameterSelection|mode|Lesser or greater than specified value|lesser
ParameterNumber|value|Value option that sets the area size limit [hectares]|0|None|1.0
OutputRaster|output|Reclassified