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Coastal Area 13301 West coast of Yuasa Bay

Basic Information A separate window opensReferences

Relevant municipalities Hirokawa, Yuasa, Arida, Yura, Wakayama Prefecture
Area (km2) 74

Reason(s) for selection A separate window opensCriteria

Selected due to high levels for the criteria 3, and selected by MARXAN software.

Characteristics A separate window opensReferences

These are the waters of Yuasa Bay. On the Nishihiro coast, with its gently shelving shallow sandy beaches with good tide currents, a diverse array of creatures can be seen in tidal mud flats. Shirasaki is a reef of exposed limestone, unique not only for its scenery but also as a base where marine creatures attach themselves, adhere, and bore holes (Ministry of the Environment, 2001; Kato, personal communication). The mouth of the Arida River in the north is a river-mouth tidal mud flats, with a diverse tidal mud flats environment that includes mud, boulders, saltwater marshlands, and other features, and it is home to large numbers of highly valuable Cerithium coralium (Ministry of the Environment, 2001). In addition, the vicinity of Yuasa Bay is a site of stable breeding of ice goby and on the coast can be seen creatures such as Luciogobius ryukyuensis, Latona cuneata and others (Hirajima, personal communication).

Environment / Habitat infromation A separate window opensData source

Tidal mud flats (km2) 0
Moba (seaweed bed) (km2) 1
Coral reef coverage (km2)
Natural coast (km) 37.8
Rate of natural coast (%) 63.4
Sand bank / submerged sand bank
Other habitats

Species information (*) A separate window opensData source

Criteria 1
Lates japonicus (Japanese lates)
Uca arcuata
Ptychognathus capillidigitatus
<Bivalva, Gastropoda>
Cyclina sinensis
Stenomelania rufescens
Assiminea estuarina
Corbicula japonica
Criteria 2
Egretta sacra (Pacific Reef-egret)[Br/Ne]
Parapristipoma trilineatum (Chicken grunt)[Sp]
Engraulis japonicus (Japanese anchovy)[Sp]
Seriola quinqueradiata (Japanese amberjack)[Sp]
Trachurus japonicus (Japanese jack mackerel)[Sp]
Octopus vulgaris (Common octopus)
Criteria 3
Lates japonicus (Japanese lates)
Chiromantes haematocheir
Helice (Helice) tridens
Clistocoeloma sinense
Uca arcuata
Ilyoplax pusilla
Uca lactea
<Bivalva, Gastropoda>
Cerithium coralium
Stenomelania rufescens
Littorina brevicula
<Other invertebrate>
Travisia japonica
Criteria 7
Macrophthalmus abbreviatus
Uca arcuata
Uca lactea
<Bivalva, Gastropoda>
Clithon sowerbianus
Stenomelania rufescens
Cerithidea rhizophorarum
<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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