资源分配和分类学如何影响海鸟的双重食? 一个审查审查
Jessica A Phillips1,2, Tim Guilford1, Annette L Fayet1,3
1Department of Zoology, Oxford University, 11a Mansfield Rd, Oxford OX1 3SZ, UK.
概括
海鸟父母使用双重食,在短途和长途旅行之间切换,当远处的食地点比附近的提供更好的资源时. 这个策略因海鸟家族而异,受息地质量差异的影响.
科学领域:
- 海洋生物学 海洋生物学
- 生态生态学 生态生态学
- 鸟类学 鸟类学是一门学科.
背景情况:
- 许多海鸟物种表现出"双重食",在短时间和长时间的食旅行之间交替提供幼鸟.
- 假设这种行为与繁殖殖民地的海洋息地质量有关.
研究的目的:
- 研究海洋息地质量与海鸟采用双重食策略之间的关系.
- 为了确定食地点质量的差异是否会导致海鸟种群之间使用双重食.
主要方法:
- 一项对102项研究的综合文献审查确定了50种海鸟在9个家族和6个顺序中的双重食.
- 遥感的叶绿素a度被用作殖民地周围海洋息地质量的代理指标.
- 食旅行距离 (短距离和长距离) 和息地质量差异与双重食流行相比被分析.
主要成果:
- 采用双重食的可能性随着近距离和远距离食地区之间息地质量差异越来越大而增加.
- 与Procellariidae和Sulidae相比,鱼和企对双重食的倾向较小,即使考虑到息地质量.
- 在食行为中观察到特定于分类物种的差异,独立于息地质量变化.
结论:
- 息地质量,特别是近地和远地资源之间的差异,是海鸟双重食策略的关键驱动因素.
- 海鸟家族和固有的生态特征显著影响参与双重食的倾向.
- 了解这些环境和分类学因素对于预测海鸟对不断变化的海洋生态系统的反应至关重要.
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