500 Important Wetlands in Japan
Chiba

No.158
Junsai-ike
map
Criteria for selection:2

City:C/Town:T/
Village:V
Wetland type Biota Habitat Reason for selection
Ichikawa C Lakes and
marshes
Freshwater
algae
Junsai-ike Habitat of Nitella mirabilis, classified as Endangered (EN) or Critically Endangered (CR).
Insects Junsai-ike This is the first site in Chiba Prefecture where Aeshna nigroflava was identified. Flatland dragonfly species, especially rare Aeshnidae species (Anaciaeschna martini, Polycanthagyna melanictera and Anax nigrofasciatus nigrofasciatus) occur in abundance.

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