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气候变暖是否会放大扩大范围的海洋捕食者的影响?
Bailey N McCann1,2, Paul E Bourdeau3,4
1Department of Biological Sciences, California State Polytechnic University, Humboldt, 1 Harpst St., Arcata, CA, 95521, USA. bailey.mccann@wra-ca.com.
Oecologia
|January 10, 2025
概括
在气候变暖下,像Acanthinucella spirata这样的扩大范围的物种可能会超过当地野生动物. 这种侵入性牛在更温暖的条件下表现出更高的食率,对本地生物多样性构成威胁.
科学领域:
- 海洋生态海洋生态学
- 气候变化生物学
- 侵入性物种研究研究 侵入性物种研究
背景情况:
- 气候变暖影响物种分布,但其与扩展范围的物种对本土社区的互动效应尚未研究.
- 扩大范围的物种可能会通过竞争或掠食对当地生物多样性构成威胁,特别是在变暖的环境中.
研究的目的:
- 评估Acanthinucella spirata,一个扩展范围的掠食性牛,对接收社区具有更强大的掠食性影响,并且比当地掠食性鱼Nucella lamellosa更适应变暖.
- 在环境和高温下研究A. spirata和N. lamellosa之间的竞争和掠夺性相互作用.
主要方法:
- 进行了现场调查,以评估A. spirata和N. lamellosa的丰度,息地重叠和猎物.
- 进行了实验室实验,以比较不同温度条件下的A. spirata和N. lamellosa在共享猎物的食率.
主要成果:
- 实地调查表明,A. spirata是N. lamellosa的潜在竞争对手,因为其丰富多彩,息地重叠,以及共同的猎物.
- 实验室结果显示,A. spirata总体上比N. lamellosa更有效地消耗了猎物.
- 在更温暖的条件下,A. spirata比N. lamellosa消耗的猎物要多得多,这表明在高温下更大的优势.
结论:
- 在持续的气候变化下,扩大范围的A. spirata种群可能比本地N. lamellosa具有竞争优势.
- A. spirata在较高的温度下更高的丰度和养率表明它更适合气候变暖,可能会影响本地社区结构.
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