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首页> 外文期刊>Waterbirds >The Salton Sea: Critical Migratory Stopover Habitat for Caspian Terns (Hydroprogne caspia) in the North American Pacific Flyway
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The Salton Sea: Critical Migratory Stopover Habitat for Caspian Terns (Hydroprogne caspia) in the North American Pacific Flyway

机译:Salton Sea:北美太平洋飞路中的Caspian Terns(Hydroprogne Caspia)的关键迁徙中断栖息地

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摘要

For migratory waterbirds, the availability and quality of suitable stopover habitat can affect body condition and demographic parameters throughout the annual cycle. This study investigates the importance of the Salton Sea, a large saline lake located in the southwestern United States near the USA-Mexico border, for migrating Caspian Terns (Hydroprogne caspia) fitted with long-duration satellite telemetry tags in the northwest contiguous USA. During fall migration, 100% (n = 25) in 2014 and 98% (n = 63) in 2015 of all tagged individuals were tracked to the Salton Sea, with median durations of stay lasting 36 and 25 days, respectively. Use of the Salton Sea during subsequent spring migrations was less consistent than in fall, but still substantial, with 91% (n = 23) and 68% (n = 53) of all birds conducting brief stops there during 2015 and 2016, respectively. The future of the Salton Sea as suitable habitat for fish and piscivorous birds is uncertain due to rising salinity levels caused by reduced input flows. It is also uncertain if other wetlands in the region can serve as replacement habitat for Caspian Terns and other migratory piscivorous species should the Salton Sea cease to provide fish prey.
机译:对于迁徙的水鸟,合适的中断栖息地的可用性和质量可以影响整个周期内的身体状况和人口统计参数。本研究调查了位于美国西南部的大型盐湖的萨尔顿海的重要性,位于美国 - 墨西哥边境附近,迁移了在西北部的西北部长期卫星遥测标签的Caspian Terns(Hydroprogne Caspia)。在堕落期间,2014年的100%(n = 25)和2015年的98%(n = 63),所有标记的个体被追踪到Salton Sea,分别具有持续36和25天的中位持续时间。在随后的春季迁移期间使用Salton海的使用比下降仍然不一致,但仍然很大程度上,在2015年和2016年期间,所有鸟类的91%(n = 23)和68%(n = 53)分别停止在那里停止。萨尔顿海的未来作为鱼类和品质鸟类的合适栖息地是不确定的,因为由于减少的输入流量引起的盐度水平上升。如果该地区的其他湿地可以作为Caspian燕鸥和其他候补品种的替代栖息地,也是不确定的也是不确定的是否应该是Salton Sea停止提供鱼类猎物。

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