500 Important Wetlands in Japan
Chiba

No.164

Estuarine Tidal Flats of Ichinomiya-gawa and Isumi-gawa

map
Criteria for selection:1,2,4
Photo
Estuarine Tidal Flats of Isumi-gawa

City:C/Town:T/
Village:V
Wetland type Biota Habitat Reason for selection
Chosei V,
Ichinomiya T,
Misaki T
Estuaries with
tidal flats,
Lagoon tidal flats
Wetland
vegetation
Salt marshes
at the mouth of
Ichinomiya-gawa
Communities of Phragmites communis-Carex scabrifolia and Phragmites communis-Fimbristylis ferruginea var. sieboldii.
Shorebirds Estuary of
Ichinomiya-gawa
Relatively many bird species are observed in relatively large population sizes during the spring and autumn migrating seasons. Visitation of more than 1% of the minimum estimated population of Crocethia alba has been recorded. Visitation of Tringa totanus, an RDB species, has also been recorded.
Benthos Estuarine tidal
flats of
Ichinomiya-gawa
and Isumi-gawa
The only tidal flat found in the area from Kujukuri-hama to the southeastern coast of the Boso-hanto (peninsula). It is important as the settling grounds of tidal flat animals on the Pacific Ocean coast of Kanto region. Major benthos include Eurydice akiyamai, Nuttalia olivacea, Mya arenaria, Macrophthalmus japonicus and Scopimera globosa.

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