珊瑚礁鱼的平均体型大小在变暖的水域下降,而珊瑚礁鱼的体型大小在变暖的水域下降
Amy Rose Coghlan1, Julia L Blanchard1,2, Simon Wotherspoon3
1Institute for Marine and Antarctic Studies (IMAS), University of Tasmania, Hobart, Tasmania, Australia.
Ecology letters
|February 16, 2024
概括
较高的海洋温度导致鱼类变小. 这项研究发现,随着海面温度 (SST) 的上升,鱼群大幅缩小,影响海洋生态系统.
科学领域:
- 海洋生物学 海洋生物学
- 生态生态学 生态生态学
- 气候变化研究 气候变化研究
背景情况:
- 水生生态热体动物,特别是鱼类,在温暖的环境中经常表现出较小的体型.
- 了解温度和鱼体大小之间的关系对于预测生态系统对气候变化的反应至关重要.
研究的目的:
- 量化海面温度 (SST) 与沿海珊瑚礁鱼群体平均体型之间的关系.
- 调查热带群体内的不同温度反应及其相对丰度的变化如何推动社区一级的体型变化.
主要方法:
- 分析了大约15,000个沿海珊瑚礁鱼类调查.
- 检查鱼群组成和15°C空间SST梯度的平均长度.
- 对不同热带群体 (食草动物,反动物,植物动物,鱼类动物) 温度影响的评估.
主要成果:
- 在SST和平均鱼长之间观察到显著的负相关性;SST增加1°C相当于平均鱼长减少5%左右.
- 平均鱼的长度在观察到的14°C至29°C的平均年SST范围内减少了50%.
- 社区体型的变化是由温室气温较高的食草动物,反动物和浮游动物的平均体型较小,以及这些食用群体相对丰度的变化所推动的.
结论:
- 即使是海洋温度的小幅增加,也与鱼群组成和平均体积的大幅变化有关.
- 这些变化对海洋食物网和生态系统的运作产生了重大生态影响.
- 热带成分在观察到的身体大小趋势中起作用,特别是在更高的温度下.
关键词:
伯格曼的规则 伯格曼的规则生物地质和生物地理学生态地质学 生态地质学草食动物 草食动物度梯度的度梯度是指度上的梯度.长度 长度 长度 长度 长度 长度宏观生态学的宏观生态学捕食者捕食者 捕食者捕食者温度大小规则 温度大小规则更多相关视频
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