Most of the collecting was done in the flooded main river channel near the bank and in the forest streams flowing over "terra firma."
(Most of the collecting; was done; L:in the flooded main river channel near the bank and in the forest streams) (the forest streams; flowing; over "terra firma)
Most of the collecting the forest streams
was done flowing
L:in the flooded main river channel near the bank and in the forest streams
over "terra firma