Species | Year | RDB of Japan | RDB of Miyagi Prefecture | ||||
2014 | 2015 | 2016 | |||||
Transplant plot | Control plot | Transplant plot | Control plot | ||||
Monochoria korsakowii | Observed | Not observed | Observed | Observed | Observed | NT |
|
Ottelia alismoides | Observed | Not observed | Not observed | Not observed | Observed | VU | NT |
Chara braunii | Observed | Not observed | Not observed | Not observed | Observed | VU |
|
Najas graminea | Not observed | Not observed | Not observed | Not observed | Not observed |
| VU |
Najas minor | Not observed | Not observed | Not observed | Not observed | Not observed | VU | CR+EN |
Salvinia natans | Not observed | Not observed | Observed | Not observed | Not observed | VU |
|
Alisma plantago-aquatica | Observed | Not observed | Observed | Not observed | Observed |
| NT |