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MOE home > Nature and Parks > EBSA home > Coastal Area > 16904 Adjacent waters of Hamanaka and Akagawa River mouth


Coastal Area 16904 Adjacent waters of Hamanaka and Akagawa River mouth

Basic Information A separate window opensReferences

Relevant municipalities Sakata, Yamagata Prefecture
Area (km2) 13

Reason(s) for selection A separate window opensCriteria

Selected due to high levels for the criteria 3.

Characteristics A separate window opensReferences

These are the waters in the vicinity of Hamanaka and the mouth of the Akagawa River. This area, which is in a relatively natural state, is an important fishing ground for abalone, turban shell, oyster, wakame, and others, and it is relatively productive where the shelf is narrow (Sakurai, personal communication).

Environment / Habitat infromation A separate window opensData source

Tidal mud flats (km2)
Moba (seaweed bed) (km2)
Coral reef coverage (km2)
Natural coast (km) 6.5
Rate of natural coast (%) 84.8
Sand bank / submerged sand bank
Other habitats

Species information (*) A separate window opensData source

Criteria 1
Cottus kazika (Fourspine sculpin)
Criteria 2
Larus crassirostris (Black-tailed Gull)
Larus crassirostris (Black-tailed Gull)[Br/Ne]
Falco peregrinus (Peregrine Falcon)[Br/Ne]
Sebastes schlegelii (Korean rockfish)[Sp]
Hyporhamphus sajori (Japanese halfbeak)[Sp]
Octopus vulgaris (Common octopus)
Criteria 3
Cottus kazika (Fourspine sculpin)
Lethenteron japonicum (Japanese lamprey)
Leucopsarion petersii (Ice goby )
Gymnogobius petschiliensis
Tribolodon brandtii (Pacific redfin )
Gastersosteus aculeatus aculeatus (Three-spined stickleback)
Cicindela laetescripta
Criteria 7
Lethenteron japonicum (Japanese lamprey)
Gastersosteus aculeatus aculeatus (Three-spined stickleback)

* 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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