[1997] (Mauser) Monitoring of migratory birds (Eiders) in the Wadden Sea of Lower Saxony in summer (moulting) 1997

Recording of the eider duck population in the Lower Saxony Wadden Sea in summer (Mauser) 1997. In the Wadden Sea of Lower Saxony, since 1986, the eider duck stocks have been recorded twice a year during a tide from the aircraft. These are the Mauser (July/August) and wintering stocks (January/February). The counts take place in coordination with Schleswig-Holstein. The data is part of the Trilateral Monitoring and Assessment Program (TMAP). Monitoring of migratory birds (Eiders) in the Wadden Sea of Lower Saxony in summer (moulting) 1997. The population of migratory birds (Eiders) in Lower Saxony’s Wadden Sea is biyearly determined by aerial flight since 1986. Counts are carried out in July/August during the moult and in January/February and are coordinated with Schleswig-Holstein. The data are part of the trilateral monitoring and assessment program (TMAP).1997年夏季下萨克森州瓦登海（Lower Saxony Wadden Sea）迁徙鸟类绒鸭（eider duck）的换羽期种群监测记录。自1986年起，下萨克森州瓦登海的绒鸭种群每年开展两次航空潮汐时段调查：分别为换羽期种群（7月/8月，即原文标注的Mauser调查）与越冬种群（1月/2月）。该项调查与石勒苏益格-荷尔斯泰因州（Schleswig-Holstein）协同开展，相关数据隶属于三边监测与评估计划（Trilateral Monitoring and Assessment Program, TMAP）。