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Coastal Area 22801 Oshima-Ohshima Island

Basic Information A separate window opensReferences

Relevant municipalities Matsumae, Hokkaido Prefecture
Area (km2) 22

Reason(s) for selection A separate window opensCriteria

Selected due to high levels for the criteria 4 and 7, and selected by MARXAN software.

Characteristics A separate window opensReferences

These are the waters in the vicinity of Oshima-Ohshima Island (50 km to sea west of the town of Matsumae, Hokkaido Prefecture). Oshima-Ohshima Island is Japan’s largest uninhabited island. It has been designated a natural monument as the northernmost of the important breeding grounds of the streaked shearwater.

Environment / Habitat infromation A separate window opensData source

Tidal mud flats (km2)
Moba (seaweed bed) (km2)
Coral reef coverage (km2)
Natural coast (km) 12.9
Rate of natural coast (%) 100
Sand bank / submerged sand bank
Other habitats

Species information (*) A separate window opensData source

Criteria 8
<Natural Monuments>
Nesting site of Streaked Shearwater (Calonectris leucomelas) <oomizunagidori hansyoku-chi (in Japanese)>

* 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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