Foraging activity and submesoscale habitat use of waved albatrosses Phoebastria irrorata during chick-brooding period
Foraging activity and submesoscale habitat use of waved albatrosses Phoebastria irrorata during chick-brooding period
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DOI：
10.3354/meps291289
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发表时间：
2005-01-01
影响因子：
2.5
通讯作者：
Anderson, DJ
中科院分区：
文献类型：
--
作者：
Awkerman, JA;Fukuda, A;Anderson, DJ
高精度的GPS数据记录器，浸没式监视器，和遥感图像被用来检查觅食栖息地的波信天翁Phoebastria aerosorata更大的分辨率比以前的中尺度研究，确定功能的觅食之旅的目的地。分析显示，减少在更精细的尺度上的栖息地利用的变化。水深测量一直是一个统计上显着的预测觅食栖息地的父母信天翁在2003年鸡育雏期跟踪，当他们短途旅行接近繁殖地。这些育雏期的父母在白天比晚上更活跃，夜间飞行活动与月相呈正相关。所有被追踪的父母前往加拉帕戈斯埃斯帕诺拉岛繁殖区西北偏北的浅水区（< 600米）。证实了先前的研究结果，所有活动的92%发生在100公里的繁殖殖民地。觅食活动是相似的男性和女性。这些数据提供了重要的信息栖息地使用的繁殖组件的波浪信天翁人口内新创建的加拉帕戈斯海洋保护区。
Highly accurate GPS dataloggers, immersion monitors, and remote-sensing images were used to examine the foraging habitat of the waved albatross Phoebastria irrorata with greater resolution than that in previous mesoscale studies, which identified features of foraging trip destinations. Analyses revealed reduced variability in habitat use at finer scales. Bathymetry was consistently a statistically significant predictor of the foraging habitat of parent albatrosses tracked during the 2003 chick-brooding period, when they made short trips close to breeding grounds. These brood-stage parents were more active during the day than the night, and nocturnal flight activity was positively correlated with moon phase. All tracked parents travelled to the shallow (< 600 m) quadrant NNW of the breeding colony on Isla Espanola, Galapagos. Corroborating the result of a previous study, 92% of all activity occurred within 100 km of the breeding colony. Foraging activity was similar for males and females. These data provide critical information on habitat use of the breeding component of the waved albatross population within the newly created Galapagos Marine Reserve.