City:C/Town:T/
Village:V |
Wetland
type |
Biota |
Habitat
|
Reason
for selection |
Kushiro C,
Kushiro T,
Tsurui V,
Shibecha T |
Wetland
complex including bogs, Rivers, Lakes and marshes |
Wetland vegetation |
Kushiro-shitsugen (including
Aka-numa, Touro-ko, Takkobu-numa, Toya-saisochi and Shirarutoro-ko) |
Extensive fens. Vegetation
here includes communities of Phragmites communis-Calamagrostis
langsdorffii, Myrica gale var. tomentosa-C. lasiocarpa
var. occultans, C. lyngbyei and forests of Alnus japonica.
The fen floor vegetation is characterized by many Carex caespitosa
tussocks called "yachi-bozu", Spiraea salicifolia, Calla palustris,
Stellaria longifolia and Thelypteris palustris. Vegetation
of the mixed bogs and bogs in Onnenai-Aka-numa (marsh) and in the
area around Kirakotan-misaki (cape) includes communities of Ledum
palustre ssp. diversipilosum-Sphagnum fuscum, Eriophorum
vaginatum-S. papillosum, Scheuchzeria palustris-Rhynchospora alba
and L. p. ssp. diversipilosum-Calamagrostis stricta var.
aculeolata. Ponds and marshes abound in aquatic plant communities.
A wide variety of Sphagnum spp. are also found. Aegagropila
linnaei grows in Takkobu-numa (marsh). |
| Aquatic plants |
Kushiro-shitsugen (Shirarutoro-ko
and Takkobu-numa) |
[Shirarutoro-ko]: This
lake offers excellent habitat for many hydrophytes including threatened
species such as Potamogeton praelongus and Sagittaria
natans. It has undergone rapid changes in recent years.
[Takkobu-numa]: This marsh exceeds any other lake and marsh within
Kushiro-shitsugen in terms of the aquatic plant species diversity
and their abundance. It has undergone rapid changes in recent years. |
| Geese and ducks |
Kushiro-shitsugen (Shirarutoro-ko,
Aka-numa, Touro-ko, Takkobu-numa, Toya-saisochi) |
Stopover sites of Cygnus
cygnus, Anser fabalis serrirostris and A. f. middendorffii. |
| Other birds |
Kushiro-shitsugen |
Habitat of Grus japonensis.
Over 30% of the total number of the nests built is found here. |
| Freshwater fish |
Habitat of Hucho perryi
in Konsen-genya |
This wetland site encompasses
large and small rivers in Konsen-genya, such as the Ichani-gawa,
Shibetsu-gawa, Tohoro-gawa, Shunbetsu-gawa, Tokotan-gawa, Nishibetsu-gawa,
Furen-gawa, Biwase-gawa, Bekambeushi-gawa, Kushiro-gawa and Akan-gawa,
and lakes and marshes in the vicinity, all of which are inhabited
by Hucho perryi and Phoxinus percnurus sachalinensis.
The marsh located in the Isobunnai Area in the middle reaches of
the Kushiro-gawa is inhabited by Lefua nikkonis. |
| Reptiles and amphibians |
Kushiro-shitsugen |
Habitat of Salamandrella
keyserlingii. |
| Insects |
Kushiro-shitsugen |
Habitat of Nehalennia
speciosa, Erythromma humerale, Lestes dryas, Aeschna subarctica,
Somatochlora japonica, S. graeseri aureola, S. arctica and Leucorrhinia
intermedia ijimai. Abounds in insects of swamp-origin, such
as E. humerale, L. intermedia ijimai, Aeschna subarctica, Prasocuris
phelandrii, Hydaticus aruspex, Dytiscus dauricus and Ommatidiotus
dissimilis. |
| Freshwater shellfish |
Nemuro Wetlands, Bekambeushi-shitsugen
and Kushiro-shitsugen |
Valvata spp. and
Pisidium spp. Rich in species diversity of boreal shellfish. |
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