海洋捕食者对脉冲资源的综合反应
Gail K Davoren1, Laurie D Maynard1, Kelsey F Johnson1
1Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, Canada.
The Journal of animal ecology
|November 15, 2024
概括
海鸟捕食者聚集到脉冲鱼 (Mallotus villosus) 鱼类生物量中,但它们的反应随着脉冲时间和规模而变化. 捕食者对季节性涌入作出反应,而不仅仅是鱼类生物量,根据资源脉冲的可预测性改变了反应.
科学领域:
- 海洋生态海洋生态学
- 动物行为 动物行为
- 渔业 科学 渔业 科学
背景情况:
- 动物迁徙创造了脉冲资源的可用性,影响了捕食者-猎物动态.
- 海鸟捕食者利用脉冲资源,但它们的总体反应可能受到资源脉冲变化的限制.
研究的目的:
- 调查海鸟捕食者对新foundland沿海海 (Mallotus villosus) 的年度海岸脉冲的总体反应.
- 为了确定头脉冲的时间和大小的变化如何影响海鸟在多年内寻找食物的行为.
主要方法:
- 在10平方公里的食区进行了10年 (2009-2010,2012,2014-2020) 的每周水声学和海鸟调查.
- 量化了海鸟的数量和鱼生物量,小鱼群的特征和产卵时间.
- 分析了与鱼类生物量,产卵开始和年比年脉冲变化相关的海鸟反应.
主要成果:
- 卡佩林豆类增加了沿海鱼类生物质的146倍,创造了更密集,更大的鱼群.
- 海鸟的数量在产卵开始时达到顶峰,这表明对季节性涌入而不是短期生物质变化的反应.
- 海鸟的反应在低幅脉冲年较弱,而当脉冲延迟时更强,这表明捕食者感知和有活力的权衡.
结论:
- 海鸟对脉冲资源的总体反应受到资源脉冲的规模和可预测性的影响.
- 捕食者寻食物的策略适应资源脉冲时间,特别是与它们自己的能量需求相关.
- 这项研究强调了海洋生态系统对自然资源变化和干扰的弹性.
关键词:
马洛托斯小虫 (Mallotus villosus) 是一个有趣的动物.新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland新foundland卡佩林 (Capelin) 是一个名为卡佩林 (Capelin) 的小镇.料鱼是一种料鱼.食生态学 食生态学捕食者与猎物的相互作用资源脉冲是一种脉冲.海鸟是一种海鸟.更多相关视频
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