鱼类的共同存在模式可以通过它们的特征差异来预测吗?
Ruben D Cordero1, Donald A Jackson1
1Ecology and Evolutionary Biology, University of Toronto Faculty of Arts & Science¸ Toronto, Ontario Canada, M5S 3G3.
Royal Society open science
|November 29, 2023
概括
种类的共同存在模式受到温度偏好和热量水平的影响,而不是身体大小. 这种基于特征的分析揭示了加拿大湖泊中鱼类种群的环境过和掠食效应.
科学领域:
- 生态生态学 生态生态学
- 社区生态学 社区生态学
- 基于特征的生态学
背景情况:
- 基于特征的分析对于预测社区中的物种关联是有价值的.
- 以前的研究往往集中在有限的物种或地区,限制了更广泛的生态洞察力.
研究的目的:
- 调查三个关键特征 - - 身体大小,温度偏好和食物营养水平 - - 如何影响多种鱼类共同发生的模式.
- 扩大基于特征的共同发生分析,超越小规模研究.
主要方法:
- 利用了来自加拿大安大略省9204个湖泊的鱼类存在/不存在数据.
- 计算了2001个物种对之间的体型,温度偏好和热量水平的欧几里德距离.
- 采用了零模型,多重回归和随机化测试来评估特征-共发生关系.
主要成果:
- 种类的温度偏好与同时发生有显著的相关性,这表明环境过.
- 热带水平显示了与共发生的显著线性和二次关系,表明由于掠食而导致的隔离.
- 身体大小与观察到的同时发生模式没有显著的关系.
结论:
- 温度偏好和热量水平是加拿大湖泊鱼类共同存在的重要驱动因素.
- 环境过和物种间的竞争 (掠食) 塑造了基于特征的社区结构.
- 在这种情况下,与温度和热量水平相比,身体大小对共同发生的模式的影响较小.
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