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首页> 外文期刊>Marine Ornithology >MIGRATION ROUTES AND STOPOVER AREAS OF LEACH'S STORM PETRELS OCEANODROMA LEUCORHOA
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MIGRATION ROUTES AND STOPOVER AREAS OF LEACH'S STORM PETRELS OCEANODROMA LEUCORHOA

机译：Leach's Storm Petrels Oceanodrooma Leucorhoa的迁移路线和中断区

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摘要

Little is known about the movements of small seabirds during migration, but such information is important for their conservation. Leach's Storm Petrel Oceanodroma leucorhoa is the most abundant seabird in Atlantic Canada, but its population has declined in recent years. Here, we describe trans-equatorial and trans-Atlantic migration movements of 13 Leach's Storm Petrels, which were tracked with geolocators from two breeding colonies in Nova Scotia, Canada: Bon Portage Island and Country Island. Our results indicate that Leach's Storm Petrels have low migratory connectivity and that they use multiple stopover areas and overwintering destinations. Birds with stopover areas at higher latitudes overwintered in the North Atlantic Ocean, either in areas associated with the North Equatorial Current or in waters off Newfoundland and Labrador. Birds with lower-latitude stopover areas overwintered in the South Atlantic Ocean, in areas associated with the Benguela Current off southwestern Africa. We observedgreater 6I5N values (indicating a higher trophic level) in feathers from birds that migrated south compared to birds that stayed in the Northern Hemisphere, but we observed no difference in <5I3C (which may be interpreted in multiple ways). Species distribution modelling using remotely sensed oceanographic data indicated that high sea surface temperatures and high chlorophyll a concentrations were important predictors of habitat use in winter.
机译：对于在迁移期间，关于小海鸟的运动很少，但这种信息对于他们的保护很重要。 Leach's Storm Petrel Oceanodroma Leucorhoa是大西洋加拿大最丰富的海鸟，但近年来其人口已下降。在这里，我们描述了13个Leach的风暴用途的反式赤道和跨大西洋迁移动作，这些迁移迁移到加拿大新斯科舍的两种繁殖殖民地跟踪了地理位偶：Bon Portage Island岛和乡村岛屿。我们的结果表明，LEACH的风暴海燕具有较低的迁移连通性，并且它们使用多个中途覆盖区和越冬目的地。在北大西洋的高纬度地区的鸟类越来越多的鸟类，无论是与北赤道电流还是在纽芬兰和拉布拉多的水域相关的领域。鸟类与下纬度覆盖区覆盖在南大西洋，在非洲西南部临时的地区。我们观察到沿着北半球迁移的鸟类的鸟类中的羽毛中的6i5n值（表明较高的营养水平）（指示更高的营养水平），但我们观察到<5i3c（可以以多种方式解释）没有差异。使用远程感测海洋数据的物种分布建模表明，高海表面温度和高叶绿素浓度是冬季栖息地使用的重要预测因子。

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