Masato Yoshikawa, Yoshinobu Hoshino and Naoto Iwata Role of seed settleability and settling velocity in water for plant colonization of river gravel bars Journal of Vegetation Science 24
We estimated seed buoyancy and settling velocity in water for 70 species appeared on a river gravel bar. Most of the species had non-buoyant seeds and their settling velocities corresponded with those of 0.062–0.25 mm sand particles. From these facts, we concluded that seed settleability is more important than buoyancy for plants to colonize river gravel bars.
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