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Coastal Area 10105 Poronuma coast

Basic Information A separate window opensReferences

Relevant municipalities Sarufutsu, Hokkaido Prefecture
Area (km2) 7

Reason(s) for selection A separate window opensCriteria

Selected by experts since Poro-numa pond has a unique brackish environment.

Characteristics A separate window opensReferences

This is the area around the shore zone of the Poronuma wetlands in Hokkaido’s Sarufutsu Village. Poronuma, adjacent to the coast and connected to the mouth of the Sarufutsu River, is home to a unique environment as a brackish lake, and it strongly retains the features of its primeval nature. Distribution of Hucho perryi and other organisms inhabiting this highly natural environment can be seen starting at its mouth, and it also has been confirmed to be a habitat for Deiratonotus cristatum, indigenous Assiminea septentrionalis, and others.

Environment / Habitat infromation A separate window opensData source

Tidal mud flats (km2)
Moba (seaweed bed) (km2)
Coral reef coverage (km2)
Natural coast (km) 6.3
Rate of natural coast (%) 91.1
Sand bank / submerged sand bank
Other habitats

Species information (*) A separate window opensData source

Criteria 1
Riparia riparia (Sand Martin)
<Bivalva, Gastropoda>
Assiminea sp.
Corbicula japonica
Criteria 2
Riparia riparia (Sand Martin)[Br/Ne]
Pandion haliaetus (Osprey)[Br/Ne]
Sebastes schlegelii (Korean rockfish)[Sp]
Clupea pallasii (Pacific herring)[Sp]
Gadus macrocephalus (Pacific cod)[Sp]
Criteria 3
Hucho perryi (Sakhalin Taimen/Japanese huchen)
Deiratonotus cristatus
Criteria 7
Hucho perryi (Sakhalin Taimen/Japanese huchen)

* 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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