Miyabayashi, Y. and Mundkur, T. 1999. Atlas of Key Sites for Anatidae in the East Asian Flyway. Wetlands International - Japan, Tokyo, and Wetlands International - Asia Pacific, Kuala Lumpur.

Table 1. Anatidae populations in the East Asian Flyway. Population sizes, population trends and recommended thresholds for use in 1% criterion by the Ramsar Convention and the Anatidae Site Network.
The 1% thresholds in parentheses are provisional numerical criteria for use in this Atlas, and are not yet intended as official 1% levels for the identification of sites of international importance. Population trends follow Rose & Scott (1997) and a blank indicates the absence of any information.
Species or subspecies	Population	Population Estimates		Threshold used to select key sites
		Size	Trend
Dendrocygna bicolor	Southern Asia / Myanmar	20,000	Decreasing	200
Dendrocygna javanica	Eastern / Southeastern Asia	100,000-1,000,000	Decreasing	(5,000)
Oxyura leucocephala	Southern Asia (wintering)	300	Decreasing	3
Cygnus olor	Eastern Asia	1,000-3,000	Decreasing	20
Cygnus cygnus cygnus	Central Siberia / Eastern Asia	60,000		600
Cygnus columbianus jankowskii	Central Siberia / Eastern Asia	40,000		400
Anser cygnoides	Entire population: Eastern Asia	30,000-50,000	Decreasing	400
Anser fabalis middendorffii	Eastern Taiga (breeding)	50,000-70,000	Decreasing	600
Anser fabalis serrirostris	Eastern Tundra (breeding)	45,000-65,000	Decreasing	550
Anser albifrons frontalis	Eastern Asia	100,000-150,000	Decreasing	1,250
Anser erythropus	Eastern Asia	14,000	Decreasing	140
Anser anser rubrirostris	Eastern Asia	50,000-100,000		750
Anser indicus	China (wintering)	15,500-17,500		160
Anser indicus	Southern Asia / Myanmar (wintering)	16,800–18,900		180
Anser caerulescens caerulescens	Northern Far East / Eastern Asia	<300		3
Anser caerulescens caerulescens	Northern Far East / Alaska / California / Mexico	65,000		650
Anser canagicas	Entire population: Alaska / Northeastern Siberia / Aleutian Islands	45,000-80,000	Stable	600
Branta canadensis leucopareia	Eastern Asia	0		1
Branta bernicla nigricans	Eastern Pacific (wintering)	126,500	Stable	1,270
Branta bernicla nigricans	Eastern Asia	5,000		50
Tadorna ferruginea	Eastern Asia	50,000-100,000		(750)
Tadorna cristata	Eastern Asia	<50		1
Tadorna tadorna	Eastern Asia	100,000-150,000		1,250
Cairina scutulata	India - Myanmar	170		2
Cairina scutulata	Southeastern Asia	130		1
Cairina scutulata	Indonesia	150		2
Sarkidiornis melanotos melanotos	Southern / Southeastern Asia	6,000	Decreasing	60
Nettapus coromandelianus coromandelianus	Eastern / Southeastern Asia	25,000-1,000,000		(1,000)
Aix galericulata	China	20,000	Decreasing	200
Aix galericulata	Korea	5,000	Decreasing	50
Aix galericulata	Japan	40,000	Stable	400
Anas strepera strepera	Eastern Asia	500,000-1,000,000	Decreasing	(7,500)
Anas falcata	Entire population: Eastern Asia	500,000-1,000,000	Decreasing	(7,500)
Anas penelope	Southern Asia (wintering)	250,000	Increasing	2,500
Anas penelope	Eastern Asia	500,000-1,000,000	Decreasing	(7,500)

Table 1 ... continued
Species or subspecies	Population	Population Estimates		Threshold used to select key sites
		Size	Trend
Anas platyrhynchos platyrhynchos	Eastern Asia	>1,500,000		(20,000)
Anas poecilorhyncha zonorhyncha	Eastern Asia	800,000-1,600,000	Decreasing	(12,000)
Anas poecilorhyncha haringtoni	Southeastern Asia	100,000-1,000,000		(5,000)
Anas luzonica	Philippines	2,500-10,000	Decreasing	(50)
Anas clypeata	Eastern / Southeastern Asia (wintering)	500,000-1,000,000		(7,500)
Anas gibberifrons gibberifrons	Indonesia	10,000-25,000	Stable	(150)
Anas gibberifrons albogularis	Andaman Islands	500-1,000	Decreasing	8
Anas acuta acuta	Eastern / Southeastern Asia (wintering)	500,000-1,000,000	Decreasing	(7,500)
Anas querquedula	Eastern / Southeastern Asia (wintering)	100,000-1,000,000		(5,000)
Anas formosa	Entire population: Eastern Asia	210,000		2,100
Anas crecca crecca	Eastern / Southeastern Asia	600,000-1,000,000	Decreasing	(8,000)
Marmaronetta angustirostris	Southern Asia	5,000	Increasing	50
Netta rufina	Southern / Central Asia	25,000-100,000	Decreasing	(500)
Aythya ferina	Eastern / Southeastern Asia	600,000-1,000,000		(8,000)
Aythya nyroca	Southern / Eastern / Southeastern Asia	10,000	Decreasing	100
Aythya baeri	Entire population: Eastern / Southeastern Asia	10,000-20,000	Decreasing	150
Aythya fuligula	Eastern / Southeastern Asia	500,000-1,000,000		(7,500)
Aythya marila mariloides	Eastern Asia	200,000-400,000		(3,000)
Somateria mollissima v-nigra	Northwestern North America / Eastern Siberia / Bering Sea	130,000-200,000	Decreasing	1,700
Somateria spectabilis	Eastern Asia
Somateria fischeri	Eastern Siberia / Alaska	140,000-160,000	Decreasing	1,500
Polysticta stelleri	Eastern Asia / Alaska	180,000	Decreasing	1,800
Histrionicus histrionicus pacificus	Western Pacific	25,000-100,000		(500)
Clangula hyemalis	Eastern Asia	500,000-1,000,000		(7,500)
Melanitta nigra americana	Eastern Asia	100,000-1,000,000		(5,000)
Melanitta fusca stejnegeri	Central / Eastern Asia	600,000-1,000,000		(8,000)
Bucephala clangula clangula	Eastern Asia (wintering)	50,000-100,000		(750)
Mergellus albellus	Eastern Asia (wintering)	25,000-100,000		(500)
Mergus serrator serrator	Eastern Asia (wintering)	25,000-100,000		(500)
Mergus squamatus	Entire population: Eastern Asia	2,000-4,000	Decreasing	30
Mergus merganser merganser / orientalis	Southern Asia (wintering)	2,500-10,000	Stable	60
Mergus merganser merganser / orientalis	Eastern Asia (wintering)	50,000-100,000		(750)

For further information, please contact the Anatidae Flyway Officer of Wetlands International - Japan, Yoshihiko Miyabayashi, JAWGP, Minamimachi 16, Wakayanagi, 989-5502 Japan (TEL&FAX +81 228 32 2592 / E-mail: yym@mub.biglobe.ne.jp). Posted 14 May 1999.