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首页> 外文期刊>Marine ecology progress series >Short-term fluctuations in forage fish availability and the effect on prey selection and brood-rearing in the black-legged kittiwake Rissa tridactyla
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Short-term fluctuations in forage fish availability and the effect on prey selection and brood-rearing in the black-legged kittiwake Rissa tridactyla

机译:短腿黑尾鸢尾鸢R的食鱼供应量的短期波动及其对猎物选择和育雏的影响

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摘要

To better understand how fluctuations in prey abundance may impact seabrid repro- ductive success, we studied short-term changes in rpey populations and their efect on prey selection and brood-rearing in the black-legged kittiwake Rissa tridactyla, a predator of near-surface-school- ing forage fishes. Our fine-scale approach involved a weekly assessment of forage fish abundance and brood-rearing conditions during 4 consecutive years(1996 to 1999)at the Shoup Bay kittiwake colony in Prince William Sound, Alaska. We conducted forage fish surveys from a fixed-wing aircraft to determine weekly prey abundance throughout the known foraging range of breeding kittiwakes.
机译:为了更好地了解猎物丰富度的波动如何影响海繁殖繁殖的成功,我们研究了近地捕食者黑腿Kittiwake Rissa tridactyla的雷贝种群的短期变化及其对猎物选择和繁殖的影响。 -学草料鱼。我们的精细方法包括在阿拉斯加威廉王子湾的Shoup Bay基蒂沃克殖民地,连续4年(1996年至1999年)每周评估饲草鱼的丰度和育雏条件。我们从固定翼飞机进行了饲草鱼调查,以确定在已知的繁殖Kittiwakes觅食范围内每周的捕食量。

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