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首页> 外文期刊>Avian Conservation and Ecology >Sea Surface Temperatures Mediated by the El Niño-Southern Oscillation Affect Birds Breeding in Temperate Coastal Rain Forests
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Sea Surface Temperatures Mediated by the El Niño-Southern Oscillation Affect Birds Breeding in Temperate Coastal Rain Forests

机译：厄尔尼诺-南方涛动介导的海面温度影响温带沿海雨林的鸟类繁殖

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摘要

We studied the timing of breeding and juvenile/adult ratios among songbirds in temperate rain forests over four years on the Haida Gwaii (Queen Charlotte Islands) archipelago, British Columbia. In May 1998, air temperatures in Haida Gwaii were above average, whereas in 1999 they were the lowest in 20 yr: temperatures in the other two years were closer to normal, although 2001 was almost as cold as 1999. Temperatures closely followed the patterns of sea surface temperatures created by the 1997–1998 El Niño, i.e., warm, event and the subsequent strong La Niña, i.e., cool, event. Timing of breeding, as measured by the first capture of juveniles or by direct observations of hatching, varied by approximately 19 d between the earliest (1998) and latest (1999) years. In 1998, the proportion of juveniles among birds trapped increased steeply as soon as young birds began to appear. In other years, the rate of increase was slower. In 1999, the peak proportions of hatching-year individuals among the foliage-gleaning insectivores, i.e., the Orange-crowned Warbler (Vermivora celata), Townsend
机译：我们研究了不列颠哥伦比亚省海达瓜（夏洛特皇后群岛）群岛四年内温带雨林中鸣禽的繁殖时间以及幼鸟/成年鸟的比率。 1998年5月，海达瓜的气温高于平均水平，而1999年则是20年来最低的：其他两年的温度都接近正常水平，尽管2001年的气温几乎与1999年一样。 1997-1998年厄尔尼诺现象（即暖事件）和随后的强拉尼娜现象（即凉事件）造成的海面温度。根据幼体的第一次捕获或直接观察到的孵化来衡量的繁殖时间，在最早的年份（1998年）和最晚的年份（1999年）之间相差约19 d。 1998年，幼鸟开始出现后，幼鸟在被困鸟中的比例急剧增加。在其他年份，增长率较慢。 1999年，在收集叶子的食虫动物中，即汤森橙冠莺（Vermivora celata），孵化年个体的高峰比例

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