Waterbird population estimates
著者
書誌事項
Waterbird population estimates
(Wetlands international global series, no. 12)
Wetlands International, c2002
3rd ed
大学図書館所蔵 全1件
  青森
  岩手
  宮城
  秋田
  山形
  福島
  茨城
  栃木
  群馬
  埼玉
  千葉
  東京
  神奈川
  新潟
  富山
  石川
  福井
  山梨
  長野
  岐阜
  静岡
  愛知
  三重
  滋賀
  京都
  大阪
  兵庫
  奈良
  和歌山
  鳥取
  島根
  岡山
  広島
  山口
  徳島
  香川
  愛媛
  高知
  福岡
  佐賀
  長崎
  熊本
  大分
  宮崎
  鹿児島
  沖縄
  韓国
  中国
  タイ
  イギリス
  ドイツ
  スイス
  フランス
  ベルギー
  オランダ
  スウェーデン
  ノルウェー
  アメリカ
注記
Includes bibliographical references (p. 209-219) and index
内容説明・目次
内容説明
The Asian Waterbird Census (AWC), conducted each year in January, is a waterbird and wetland monitoring programme initiated in 1987 within the framework of the International Waterbird Census. This report summarises the results of the AWC from 1987 to 2007, comprising counts at 6,705 sites in 27 countries. A total of 1,387 sites met at least one of two criteria of internationally important sites according to the Ramsar Convention. Of these, 312 sites were reported to support more than 20,000 waterbirds, and 1,382 sites recorded more than 1 percent of the biogeographic population of at least one species of waterbird. In the most recent five years (from 2003-2007), a total of 2,963 sites were counted and 673 were identified as internationally important sites. A total of 671 sites recorded more than 1 percent of the biogeographic population of at least one species of waterbird, and 137 supported more than 20,000 waterbirds. Totals of 349 waterbird species and 74 wetland-dependent species were recorded during this period. Brief status accounts, accompanied by 328 maps, are presented for 396 species, including 52 Globally Threatened species and 24 Near Threatened species. Preliminary trend analyses using the statistical package TRIM suggest that four of the eight most numerous dabbling duck species in East Asia are in decline.
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