500 Important Wetlands in Japan
Akita

No.97

Akita-heiya Wetlands
(Hachirogata-chosei-ike, Tennodeto-shitsugen, Ogata, Megata, Kokkaentsutsumi, Kodatehanatsutsumi, Fukudatsutsumi, Akahiragata, Horyuzaki-tameike and Furukawa)

map
Criteria for selection:1,2,3,4
Photo
Hachirogata

Photo
Kakusuke-tsutsumi

City:C/Town:T/
Village:V
Wetland type Biota Habitat Reason for selection
Ikawa T,
Ogata V,
Tenno T,
Gojome T,
Hachirogata T,
Yamamoto T,
Akita C
Bogs,
Fens,
Lagoons,
Lakes and marshes
Wetland vegetation Wetlands in Akita-heiya (Hachirogata- chosei-ike, Tennodeto-shitsugen, Ogata, Megata, Kokkaentsutsumi, Kodatehanatsutsumi, Fukudatsutsumi, Akahiragata, Horyuzaki-tameike and Furukawa) [Megata]: Marsh with communities of Scirpus fluviatilis-Zizania latifolia, Carex dispalata and C. pseudocuraica. [Tennodeto-shitsugen]: Bog with communities of Phragmites communis and Sparganium stenophyllum.
[Ogata]: Nymphoides peltata.
[Kokkaentsutsumi, Kodatehanatsutsumi and Fukudatsutsumi]: Najas japonica, N. yezoensis, Najas minor, Blyxa echinosperma and Caldesia parnassifolia. [Akahiragata /Horyuzaki-tameike and Fukukawa]:Nymphoides peltata, Monochoria korsakowii and submerged plants.
Aquatic plants Wetlands in Akita-heiya (including Ogata, Megata and Furukawa) Habitat of valuable aquatic plants, including Nymphoides peltata, Monochoria korsakowii and Ranunculus nipponicus var. submersus.
Geese and ducks Hachirogata and Otomo-numa Lakes Stopover sites of Cygnus cygnus, C. columbianus, Anser fabalis serrirostris, A. f. middendorffii, A. albifrons and Anas acuta.
Benthos Hachirogata- chosei-ike Though desalination has advanced, many brackish benthos still inhabit the site.

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