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The year-round distribution and habitat preferences of Campbell albatross (Thalassarche impavida)
Aquatic Conservation: Marine and Freshwater Ecosystems ( IF 2.4 ) Pub Date : 2021-08-19 , DOI: 10.1002/aqc.3685
David R. Thompson 1 , Kimberly T. Goetz 1, 2 , Paul M. Sagar 3 , Leigh G. Torres 4 , Caitlin E. Kroeger 5 , Lisa A. Sztukowski 6 , Rachael A. Orben 7 , Andrew J. Hoskins 8 , Richard A. Phillips 9
Affiliation  

  1. The use of miniaturized electronic tracking devices has illuminated our understanding of seabird distributions and habitat use, and how anthropogenic threats interact with seabirds in both space and time. To determine the year-round distribution of adult Campbell albatross (Thalassarche impavida), a single-island endemic, breeding only at Campbell Island in New Zealand's subantarctic, a total of 68 year-long location data sets were acquired from light-based geolocation data-logging tags deployed on breeding birds in 2009 and 2010.
  2. During the incubation and chick-guard phases of the breeding season, birds used cool (<10°C) waters over the Campbell Plateau, but also ranged over deeper, shelf-break and oceanic waters (4,000–5,500 m) beyond the Plateau. Later in the breeding season, during post-guard chick-rearing, Campbell albatrosses exploited generally deep waters (4,000–5,000 m) beyond the Campbell Plateau.
  3. During the non-breeding period, adults tended to move northwards into warmer (approximately 15°C) waters and occupied areas beyond western Australia in the west to offshore from Chile in the east. Overall, about 30% of adults spent some of their non-breeding period in the central and eastern Pacific Ocean, substantially expanding the previously reported range for this species.
  4. One bird, that failed in its breeding attempt in October 2009, departed Campbell Island and circumnavigated the southern oceans before being recaptured back at Campbell Island in October 2010. This is the first example of an annually-breeding albatross species completing a circumnavigation between breeding attempts.
  5. Overlap with fishing effort, using data from the Global Fishing Watch database, was assessed on a monthly and seasonal basis. Generally, levels of overlap between Campbell albatross and fishing effort were relatively low during the breeding season but were approximately 60% higher during the non-breeding period, underlining the need for international initiatives to safeguard this species.


中文翻译:

坎贝尔信天翁(Thalassarche impavida)的全年分布和栖息地偏好

  1. 微型电子跟踪设备的使用阐明了我们对海鸟分布和栖息地使用以及人为威胁如何在空间和时间上与海鸟相互作用的理解。为了确定成年坎贝尔信天翁(Thalassarche impavida)的全年分布,这是一种单岛特有种,仅在新西兰亚南极的坎贝尔岛繁殖,从基于光的地理定位数据中获取了总共 68 年的位置数据集- 2009 年和 2010 年部署在种鸟上的日志记录标签。
  2. 在繁殖季节的孵化和雏鸡守卫阶段,鸟类在坎贝尔高原上使用凉爽 (<10°C) 的水域,但也在高原以外更深的、陆架断裂和海洋水域 (4,000–5,500 m) 活动。在繁殖季节后期,在看守后的小鸡饲养期间,坎贝尔信天翁通常会利用坎贝尔高原以外的深水区(4,000-5,000 米)。
  3. 在非繁殖期,成虫倾向于向北迁移到较温暖(约 15°C)的水域,并占领西澳大利亚西部以外的地区,东至智利的近海。总体而言,大约 30% 的成年人在太平洋中部和东部度过了一些非繁殖期,大大扩大了先前报告的该物种的范围。
  4. 一只鸟在 2009 年 10 月的繁殖尝试中失败,离开坎贝尔岛并环游南部海洋,然后于 2010 年 10 月在坎贝尔岛重新捕获。这是每年繁殖的信天翁物种在繁殖尝试之间完成环游的第一个例子.
  5. 使用来自全球渔业观察数据库的数据,按月和季节性评估与捕捞努力量的重叠。一般来说,坎贝尔信天翁和捕捞努力之间的重叠水平在繁殖季节相对较低,但在非繁殖期间高出约 60%,强调需要采取国际举措保护该物种。
更新日期:2021-10-19
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