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MOE home > Nature and Parks > EBSA home > Coastal Area > 13702 Adjacent waters of Otagawa and Yahatagawa River mouths


Coastal Area 13702 Adjacent waters of Otagawa and Yahatagawa River mouths

Basic Information A separate window opensReferences

Relevant municipalities Saeki Ward, Saka, Nishi Ward, Naka Ward, Minami Ward, Hiroshima Prefecture
Area (km2) 27

Reason(s) for selection A separate window opensCriteria

Selected by experts due to endangered species are found.

Characteristics A separate window opensReferences

These are the waters in the vicinity of the mouths of the Otagawa and Yahatagawa Rivers, both in the city of Hiroshima. These waters are inhabited by red spotted masu trout (Kato, 1998). The mouth of the Otagawa River is highly productive. For example, Asian clam are caught here. In addition, this also was a recorded habitat for the zoogeographically important Gymnogobius cylindricus (now extinct), which was distributed only in very limited places in the Seto Inland Sea and the Ariake Sea (Shigeta et al., 2003; Shigeta, 2008).

Environment / Habitat infromation A separate window opensData source

Tidal mud flats (km2) 0.148
Moba (seaweed bed) (km2) 0.3
Coral reef coverage (km2)
Natural coast (km) 1.1
Rate of natural coast (%) 3.6
Sand bank / submerged sand bank
Other habitats

Species information (*) A separate window opensData source

Criteria 1
<Bivalva, Gastropoda>
Corbicula japonica
Criteria 2
Sterna albifrons (Little Tern)
Sterna albifrons (Little Tern)[Br/Ne]
Charadrius dubius (Little Ringed Plover)[Br/Ne]
Ammodytes personatus (Japanese sand lance)[Sp]
Engraulis japonicus (Japanese anchovy)[Sp]
Octopus vulgaris (Common octopus)
Criteria 3
Sterna albifrons (Little Tern)
Anguilla japonica (Japanese eel)
Leucopsarion petersii (Ice goby )
<Vascular Plants>
Suaeda malacosperma
Criteria 7
<Bivalva, Gastropoda>
Corbicula japonica
<Vascular Plants>
Aster tripolium (Sea aster)
Suaeda malacosperma
Artemisia fukudo

* 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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