A MULTIFACTORIAL EXPLANATION FOR VARIATION IN BREEDING PERFORMANCE OF BRENT GEESE BRANTA-BERNICLA
A MULTIFACTORIAL EXPLANATION FOR VARIATION IN BREEDING PERFORMANCE OF BRENT GEESE BRANTA-BERNICLA
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DOI：
10.1111/j.1474-919x.1989.tb02762.x
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发表时间：
1989-04-01
期刊：
影响因子：
2.1
通讯作者：
EBBINGE, BS
中科院分区：
文献类型：
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作者：
EBBINGE, BS
显着的差异，每年繁殖成功的黑腹布伦特鹅布兰塔B。一般认为，bermicla是由北极繁殖地的可变条件造成的。最近重新开始的关于这个问题的讨论特别提到，旅鼠数量的周期性变化，导致北极狐对鸟类的捕食压力的周期性变化，这是决定布伦特鹅是否能够成功繁殖的主要因素。关于西欧布伦特鹅的春季状况和从春季集结地迁移到繁殖地期间的风况的新数据表明，这些因素也影响繁殖产量。
The dramatic differences in annual breeding success of Dark-bellied Brent Geese Branta b. bermicla are generally interpreted as being caused by variable conditions on the arctic breeding grounds. The recently revived discussion on this issue mentions, in particular, the cyclic variation in abundance of lemmings, resulting in cyclic variation of predation pressure on bird bests by arctic foxes, as the main factor determining whether Brent Geese are able to breed successfully or not. New data on the spring condition of Brent Geese in Western Europe and wind conditions during migration from the spring staging areas to the breeding grounds show that these factors also influence breeding output.