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沿着自然环境梯度沿着珊瑚礁鱼生物质和特征结构的空间模式

Darren J Coker¹, Lucia Pombo-Ayora¹, Alexander Kattan¹

¹Red Sea Research Center, King Abdullah University of Science and Technology, Thuwal, 23955, Saudi Arabia.

Marine environmental research

|February 19, 2025

概括

红海珊瑚礁具有较低的特征冗余性和高度脆弱性,功能多样性与环境梯度无关. 沿海人口密度,而不是度,影响了鱼群的脆弱性.

科学领域:

海洋生态海洋生态学
生态系统评估生态系统评估
生物多样性保护生物多样性保护

背景情况:

生物多样性丧失是人类活动影响海洋和陆地生态系统的关键全球问题.
生态特征提供了理解社区变异的机制,补充了传统的分类学评估.
评估跨环境和干扰尺度的空间社区变化至关重要.

研究的目的:

调查红海度梯度沿线鱼群的特征和生物量指数.
评估红海珊瑚礁的功能丰富性,多样性和脆弱性.
确定鱼群结构,环境参数和沿海人类影响之间的联系.

主要方法:

现场对94个红海珊瑚礁的鱼群进行视觉调查,横跨2000公里的度.
记录了沿海人口密度和环境变量 (海面温度,生产率,盐度).
计算了特征和生物质指数,确定了153个独特的功能实体 (FE).

主要成果:

红海珊瑚礁的特征冗余性低 (FE的71%是单一物种) 和高度脆弱性.
功能丰富性和多样性与度环境梯度不一致,表明当地影响.
最高的生物质和生产率是在南部的法拉桑银行,由浮游生物驱动;北方的生产率最低.
最脆弱的地区靠近主要城市/港口,这表明与沿海人口有联系.

结论:

红海鱼群体的特点是高度脆弱和低特征冗余.
当地的环境变化和压力因素,而不是广泛的度梯度,显著影响功能多样性.
沿海人口密度与增加的特征脆弱性有关,突出显示了人类的影响.
该研究为对脆弱的珊瑚礁鱼群体的区域评估提供了基线,强调基于特征的方法,而不是纯粹的分类方法.

关键词:

珊瑚礁中的珊瑚礁多样性多样性多样性多样性生态特征生态特征生产力生产力生产力红海是红海,红海就是红海.公司营业额营业额

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