Sampling devices for the measurement of seed rain and hydrochory in rivers1

the bucket with bottom removed, and two 2-liter beverage bottles for flotation. The total cost of one pair of seed rain and hydrochore traps was less than $1.00. The seed dispersal estimates from the aquatic seed traps reflected the relative numbers of species and seeds dispersed in aquatic systems. A test of the efficiency of the aquatic seed traps demonstrated that traps placed in a swamp over a period of a month captured 1.8 times the biomass of debris and seeds than were present on the surface of the water at any given time.