Effect of floating nest platforms on the breeding performance of Black Terns
Effect of floating nest platforms on the breeding performance of Black Terns
复制标题
浮巢平台对黑燕鸥繁殖性能的影响
DOI：
10.1111/j.1557-9263.2006.00040.x
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发表时间：
2006
影响因子：
0.9
通讯作者：
Jonathan P. Heiar
中科院分区：
文献类型：
--
作者：
D. Shealer;Joshua M. Buzzell;Jonathan P. Heiar
在2003年和2004年，我们放置了41个浮动巢平台草湖东南部威斯康星州（美国），以测试的假设，繁殖成功的黑燕鸥（Chlidonias尼日尔）是有限的质量合适的筑巢栖息地。这2年之间的水位的极端差异提供了一个自然的实验，以评估在干旱的一年（2003年），当自然筑巢基质是丰富的，和洪水年（2004年），当自然基质是有限的筑巢高峰期的巢平台的有效性。2003年，燕鸥在41个平台中的27个（66%）上筑巢，2004年，41个平台中的26个（63%）。在2003年，平台和天然巢穴的占用率没有明显差异，但在2004年的季节初离合器启动的模式表明，平台是首选天然基质。在2003年，巢的存活率并没有显着差异放置在平台上的巢和放置在自然基质，但平台巢有显着较高的孵化成功率和巢存活率在2004年。Kaplan-Meier法和表观巢成功法计算的巢存活率提供了类似的估计。在这两年中，平台上产的蛋明显大于自然基质上产的蛋，表明平台被高质量的鸟类占据。我们的研究表明，浮动巢平台可以是一个有效的管理工具，以提高筑巢栖息地的黑燕鸥和其他水生鸟类，建设浮动巢，主要是因为平台提供巢址时，自然网站是不可用的，由于洪水。巢平台也可能有助于解决有关栖息地选择和亲本质量的问题。SINOPSIS。人工平台在设计中的作用
In 2003 and 2004, we placed 41 floating nest platforms on Grassy Lake in southeastern Wisconsin (USA) to test the hypothesis that reproductive success of Black Terns (Chlidonias niger) is limited by the quality of suitable nesting habitat. Extreme differences in water levels between these 2 yr provided a natural experiment to evaluate the effectiveness of the nest platforms during a drought year (2003) when natural nesting substrate was abundant, and a flood year (2004) when natural substrate was limited during the peak nesting period. Terns nested on 27 of 41 (66%) of the platforms in 2003 and 26 of 41 (63%) in 2004. No difference in the occupancy rate of platforms and natural nests was evident in 2003, but the pattern of clutch initiations early in the season in 2004 indicated that platforms were preferred over natural substrates. In 2003, nest survival rates did not differ between nests placed on platforms and those placed on natural substrates, but platform nests had significantly higher hatching success and nest survival rates in 2004. Both the Kaplan-Meier and Apparent Nest Success methods of calculating nest survival provided similar estimates. In both years, eggs laid on platforms were significantly larger than those laid on natural substrates, suggesting that platforms were occupied by high-quality birds. Our study indicates that floating nest platforms can be an effective management tool to enhance nesting habitat for Black Terns and other aquatic birds that construct floating nests, primarily because platforms provide nest sites when natural sites are not available due to flooding. Nest platforms also may be useful for addressing questions concerning habitat selection and parental quality. SINOPSIS. Efecto de plataformas artificiales para anidar en el desempe˜