Abstract
In this study, we elucidate the habitat of the near threatened goby species Luciogobius pallidus based on the field work. We simulated the fluctuations in river-bed induced by flush floods and fluctuations in salinity induced by tide and regular flow in order to clarify the mechanisms of formation of their habitat. The results of the field work showed that this species inhabit gravelly bottoms and brackish waters with medium salinity. Simulations of the fluctuations in river bed showed that the habitat of this species is formed at the boundary between the areas with coarse and fine sediments after the flush floods. Simulations of the fluctuation in salinity showed that the habitat of this species is exposed to waters with mostly high and/or medium salinity levels.
