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三维的植被结构驱动了非洲大角的种子分散模式

Nicholas J Russo¹, Docas L Nshom², António Ferraz^3,4

¹Department of Ecology and Evolutionary Biology, University of California, Los Angeles, California, USA.

The Journal of animal ecology

|October 18, 2024

概括

像鸟这样的大型鸟类根据3D结构在热带雨林中航行,影响种子散布模式. 这突出了植被复杂性和动物行为之间的反循环,这对森林生态系统至关重要.

科学领域:

生态生态学生态生态学
热带生物学热带生物学
生物多样性科学生物多样性科学

背景情况:

三维 (3D) 植被结构显著影响动物的运动和生态系统功能.
热带雨林是地球上结构上最复杂的生态系统,它们依赖动物进行种子散播 (60%-90%的树木).
了解与息地结构相关的动物运动对于森林动态至关重要.

研究的目的:

为了研究3D热带雨林结构如何影响大型果鸟类的移动.
为了确定由鸟类行为驱动的种子分散的结果空间模式.
探索植被结构和种子分散之间的反循环.

主要方法:

白 (Bycanistes albotibialis) 和黑角 (Ceratogymna atrata) 的GPS跟踪. 这两种类型的鸟类都存在.
利用光探测和测距 (LiDAR) 数据进行喀麦隆南部雨林结构的详细3D分析.
基于跟踪的移动和息地偏好,绘制种子分散的空间概率.

主要成果:

这两种角鸟都喜欢有更高的树冠高度的区域;白角鸟也喜欢更高的垂直复杂性.
关于树冠间隙,角的息地选择有所不同:33%的人更喜欢靠近间隙的区域,而其他人则避免了它们.
观察到特定物种的息地偏好,包括白角鸟避免沼泽,黑角鸟在高温期间更喜欢沼泽.

结论:

热带雨林的3D结构属性直接通过影响黄角的行为来塑造种子分散模式.
雨林植被结构和动物介导的种子分散之间存在潜在的反循环.
这些相互作用对于理解热带雨林生态系统功能和预测对人类影响的反应至关重要.

关键词:

无人机-LiDAR 无人机飞行器霍恩比尔 (Hornbill) 是一个大象.运动生态学运动生态学种子散布种子散布步骤选择函数的功能.热带雨林的热带森林是什么

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