Effects of flooding on a wetland bird community |
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| Authors: | Tetsuo Shimada Aaron Bowman Mitsuru Ishida |
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| Institution: | (1) The Miyagi Prefectural Izunuma–Uchinuma Environmental Foundation, 17-2 Shikimi, Wakayanagi, Miyagi 989-5504, Japan;(2) 105-2 Kanda, Asahi, Furukawa, Miyagi 989-6116, Japan;(3) Japanese Association for Wild Geese Protection, 16 Minamimachi, Wakayanagi, Miyagi 989-5502, Japan;(4) Present address: North-western College, 3003 Snelling Avenue, North St Paul, MN 551131598, USA |
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| Abstract: | The Lake Izunuma–Uchinuma was extensively flooded in 1998 and vast areas (approximately 200 ha) of rice fields were submerged for the first time since the land was reclaimed in 1963. When the numbers of birds in 1998 were compared with those in normal years (1995–1997), the numbers of black-crowned night herons (Nycticorax nycticorax L.), cattle egrets (Bubulcus ibis L.) and black kites (Milvus migrans Boddaert) increased during the flooding, and the numbers of ducks, especially dabbling ducks (seven species of 11 Anas spp.) were high even after the flooding, while the numbers of the little grebe Tachybaputus ruficollis Pallas were diminished by the flooding. |
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| Keywords: | flooding wetland bird community |
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