City:C/Town:T/
Village:V |
Wetland type
|
Biota
|
Habitat
|
Reason for selection
|
| Ishigaki C |
Estuaries with tidal flat,
Mangrove forests,
Rivers,
Rice paddies,
Seagrass beds,
Seaweed beds |
Reptiles and
amphibians |
Montane streams and wetlands in Omoto-dake |
Habitat of Rana utsunomiyaorum (endemic
species of Japan), R. supranarina (endemic species of Japan),
R. psaltes, Amphiesma ishigakiensis (endemic species of
Japan) and Cistoclemmys flavomarginata (endemic subspecies
of Japan). |
| Insects |
Fukai-omoto
and Shiramizu in the foothills of Omoto-dake |
Habitat of Agriocnemis pygmaea pygmaea, Euphaea
yayeyamana, Asiagomphus yayeyamensis, Leptogomphus yayeyamensis,
Planaeschna risi sakishimana, P. ishigakiana ishigakiana, Macromia
urania, Macromidia ishidai and Hydrobasileus croceus. |
Aquatic
plants |
Rice paddies and wetlands in Ishigaki-jima |
River basin wetlands, as represented by Bunera
wetland, and paddy fields before agricultural infrastructure improvement
support threatened species including Nymphoides coreana and
Najas spp. Attention must be paid to the critical condition
brought about by the development. |
Mangrove
forests |
Nagura
(Amparu) |
Habitat of Kandelia candel, Bruguiera gymnorhiza,
Rhizophora mucronata, Avicennia marina, Lunmitzrea racemosa
and Sonneratia alba. Rare distribution site of mangrove tree
species. Geographically rare distribution site of mangrove forests.
Representative and endemic distribution site of mangrove forest
ecosystems. High diversity of mangrove forest ecosystems. |
Seagrasses,
Marine algae |
Nagura-wan |
Eight seagrass species form mixed seagrass beds.
Ecological distribution, density and seasonal changes in abundance
of seagrasses, fish communities, and benthos communities have been
studied and this bay was found to be rich in species diversity.
A caridean shrimp species was first recorded in Japan in this tropical
Nagura-wan. This bay supports tropical seagrass beds consisting
of Thalassia hemprichii, Cymodocea serrulata, Cymodocea rotundata,
Syringodium isoetifolium, Halophila ovalis, Halodule uninervis
and Halodule pinifolia. It provides habitat for Halophila
ovalis, Enhalus acoroides, Cymodocea serrulata and communities
of Acetabularia ryukyuensis. |
| Shorebirds |
Amparu |
Relatively many bird species are observed in relatively
large population sizes during the spring and autumn migrating seasons.
Visitation of Himantopus himantopus and Tringa totanus
(both RDB species) has been recorded. |
| Crustaceans |
Nagura-gawa (Amparu)
and its river basin |
Amparu is a unique and important wetland in terms
of tree species, scale, and origin of mangrove forests, as well
as birds, fish and shellfish it harbors. In particular, it is the
northernmost distribution site of such aquatic animals as large
spiral shells including Terebralia palustris, and rare Caridina
brevicarpalis, which is the only marine species among members
of the genus Caridina. As the Nagura-gawa supports 6 RDB
species (Neocaridina denticulata ishigakiensis, N. brevirostris,
Macrobrachium gracilirostre, Geothelphusa minei, G. miyazakii and
Ryukyum yaeyamense), the entire river basin is important. |
| Benthos |
Nagura-wan |
Extensive mangrove wetlands rich in benthos. |
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(Click to enlarge photo) 
(Click to enlarge photo)