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Coastal Area 13403 Inner Osaka Bay

Basic Information A separate window opensReferences

Relevant municipalities Minato Ward, Konohana Ward, Suminoe Ward, Nishiyodogawa Ward, Taisho Ward, Osaka; Amagasaki, Hyogo Prefecture
Area (km2) 30

Reason(s) for selection A separate window opensCriteria

Selected due to high levels for the criteria 2.

Characteristics A separate window opensReferences

These are the waters of inner Osaka Bay. The area of the Yodo River mouth on the north side is dotted with tidal mud flats, abundant with large Asian clams and other plants and animals (Ministry of Land, Infrastructure, Transport and Tourism, official website of Osaka Bay biological survey report). In the vicinity of the mouth of the Yodo River (Shinyodogawa river) live diverse brackish-water creatures and numerous bird species, including Grandidierella osakaensis, identified in “Threatened Animals of Japanese Tidal Flats” as a near-threatened species (Ariyama, 2004; Japanese Association of Benthology, 2012; Yamanishi et al, 1991). The Osaka Nankou Bird Sanctuary included in these waters is visited by snipe and plover, with relatively large numbers of species and populations during the spring and fall migration periods. Here at least 1% of the minimum estimated population of Kentish plover has been recorded, as has at least 0.25% of the minimum estimated population of dunlin. In addition, black-winged stilt have been recorded here as well (Ministry of the Environment, 2001).

Environment / Habitat infromation A separate window opensData source

Tidal mud flats (km2)
Moba (seaweed bed) (km2)
Coral reef coverage (km2)
Natural coast (km) 0
Rate of natural coast (%) 0
Sand bank / submerged sand bank
Other habitats

Species information (*) A separate window opensData source

Criteria 2
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]
Ammodytes personatus (Japanese sand lance)[Sp]
Seriola quinqueradiata (Japanese amberjack)[Sp]
Trachurus japonicus (Japanese jack mackerel)[Sp]
Octopus vulgaris (Common octopus)
Criteria 3
Sterna albifrons (Little Tern)
Anguilla japonica (Japanese eel)
Gymnogobius macrognathos
Cicindela laetescripta
Cicindela inspecularis
Cicindela lewisi
Criteria 7
Luciogobius guttatus (Flat-headed goby)
<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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