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首页> 外文期刊>The wilson journal of ornithology >BREEDING ORIGINS OF NORTHERN SHOVELERS (ANAS CLYPEATA) WINTERING ON THE GREAT SALT LAKE, UTAH
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BREEDING ORIGINS OF NORTHERN SHOVELERS (ANAS CLYPEATA) WINTERING ON THE GREAT SALT LAKE, UTAH

机译：在犹他州大盐湖中过冬的北方羊（ANAS CLYPEATA）的繁殖起源

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摘要

The breeding origin and migratory connectivity of wintering birds are important to address how population changes on wintering areas are impacted by changes elsewhere in the birds' annual cycle. In addition, identifying important point sources of nutrients used throughout the annual cycle can assist managers in identifying sources of toxins or pathogens. We used stable hydrogen isotope ratios to identify breeding locations of Northern Shovelers (Anas clypeata; henceforth shoveler) wintering at the Great Salt Lake (GSL), Utah. Stable-isotope likelihood-based assignment placed the largest number of shovelers collected during winter on the GSL as breeding in the western US and southern Canada, similar to a small sample size of banding records. Shovelers wintering on the GSL generally did not breed locally or at the northern extent of their breeding range, rather wintering shovelers came from across their nesting range.
机译：越冬鸟类的繁殖起源和迁徙连通性对于解决越冬地区种群变化如何受到鸟类年度循环中其他地方变化的影响非常重要。此外，确定整个年度周期中使用的重要养分来源可以帮助管理人员确定毒素或病原体的来源。我们使用稳定的氢同位素比率来确定犹他州大盐湖（GSL）越冬的北部铲子（Anas clypeata；此后的铲子）的繁殖地点。在美国西部和加拿大南部，基于稳定同位素似然性的分配将冬季收集的铲子数量最多的季节放在美国西部和加拿大南部的GSL上，这与带状记录的小样本量相似。在GSL上越冬的铲子通常不会在本地或繁殖范围的北部繁殖，而是越过嵌套范围的越冬铲子。

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