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MOE home > Nature and Parks > EBSA home > Coastal Area > 12102 Adjacent waters of Ichinomiya River mouth


Coastal Area 12102 Adjacent waters of Ichinomiya River mouth

Basic Information A separate window opensReferences

Relevant municipalities Ichinomiya, Chosei, Shirako, Chiba Prefecture
Area (km2) 11

Reason(s) for selection A separate window opensCriteria

Selected due to high levels for the criteria 2, and selected by MARXAN software.

Characteristics A separate window opensReferences

These are the waters in the vicinity of the mouth of the Ichinomiya River. The Ichinomiya River's river-mouth tidal mud flats are some of the few tidal mud flats between Kujukuri Beach and Sotobo and serve as an important settlement ground on the Pacific coast of the Kanto Region for creatures that live in tidal mud flats. The main benthos living here are Eurydice akiyamai, Nuttallia olivacea, Mya arenaria, Macrophthalmus japonicus, sand bubbler crab, and others, and during the migration seasons of spring and fall relatively high numbers of species and populations of birds are seen here, where at least 1% of the sanderling's minimum estimated population has been recorded. Common redshank have been recorded here (Ministry of the Environment, 2001).

Environment / Habitat infromation A separate window opensData source

Tidal mud flats (km2) 0.2
Moba (seaweed bed) (km2)
Coral reef coverage (km2)
Natural coast (km) 5.9
Rate of natural coast (%) 92.6
Sand bank / submerged sand bank
Other habitats

Species information (*) A separate window opensData source

Criteria 2
Neophocaena phocaenoides (Fineless porpoise)
Larus crassirostris (Black-tailed Gull)
Larus crassirostris (Black-tailed Gull)[Br/Ne]
Sterna albifrons (Little Tern)
Sterna albifrons (Little Tern)[Br/Ne]
Charadrius dubius (Little Ringed Plover)[Br/Ne]
Charadrius alexandrinus (Kentish Plover)[Br/Ne]
Caretta caretta (Loggerhead Turtle)
Laemonema longipes (Threadfin hakeling)[Sp]
Pleuronectes yokohamae (Marbled flounder)[Sp]
Watasenia scintillans (Firefly squid )
Loligo bleekeri (Spear squid)
Criteria 3
Sterna albifrons (Little Tern)
Helice (Helice) tridens
Ilyoplax pusilla
Macrophthalmus japonicus
Criteria 7
Caretta caretta (Loggerhead Turtle)
Macrophthalmus japonicus
<Vascular Plants>
Aster tripolium (Sea aster)

* This is the species list of which meet the criteria. In that matter, this list does not include all species that inhabit the individual area.
Abbreviation in the information is as follows.
[Br/Ne] : Adjacent water of breeding area or nesting site
[Sp] : spawning area
[Ad] : species not used for analysis but add to the list because inhabit information was collected later
[Ex] : species used for analysis but considered to be possibly extinct in the EBSA region (area)
No mark : data of species distribution


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