Akomolafe G F, Ocheola W O, Rosazlina R, Ojija F, Xue S, Omomoh B E
Department of Plant Science and Biotechnology, Federal University of Lafia, PMB 146, Lafia, Nigeria.
School of Biological Sciences, Universiti Sains Malaysia, 11800, Minden, Pulau Pinang, Malaysia.
Sci Rep. 2025 Aug 14;15(1):29877. doi: 10.1038/s41598-025-06353-7.
Hyptis suaveolens is an invasive alien plant which possesses traits that drive its impacts and interruption of ecosystem processes. In this study, the intraspecific functional traits of H. suaveolens were assessed in some invaded parts of Nasarawa State in Nigeria to test whether the functional traits (FTs) of H. suaveolens would differ with respect to the land use types at the different study sites. Invaded sites of size 100 m × 100 m were chosen at farmland, abandoned land and roadside of Lafia, Doma and Akwanga, Nasarawa State. At each site, the functional traits were determined towards the end of the growing season using ten consecutive 1.5 × 1.5 m quadrants positioned at 2 m intervals along a 100 m transect. Also, the diversity indices were quantified and compared across the sites at each location. Principal component analysis with the option of a varimax rotation was used to isolate axes of specialization of the plant at all the sites. The results showed that H. suaveolens utilize different functional traits as their drivers with respect to individual sites in the three locations. Leaf area, stem bark thickness, fine root diameter, specific root length, rooting depth, and plant height are drivers in Doma. Leaf area, root depth distribution, stem specific density, fine root diameter, leaf dry matter content, stem dry matter content, specific root length and plant height are the drivers in Akwanga. Fine root diameter, Leaf dry matter content, Root depth distribution, Leaf area, Specific root length and plant height are the drivers in Lafia. These traits are indicators of their highly competitive ability, low inflammability, efficient acquisition, usage of resources and resistance to physical hazard.
香彩雀是一种外来入侵植物，具有影响和干扰生态系统过程的特性。在本研究中，对尼日利亚纳萨拉瓦州一些受入侵地区的香彩雀种内功能性状进行了评估，以测试香彩雀的功能性状在不同研究地点的土地利用类型方面是否存在差异。在纳萨拉瓦州拉菲亚、多马和阿夸加的农田、荒地和路边选择了面积为100米×100米的入侵地点。在每个地点，在生长季节结束时，沿着100米的样带，每隔2米设置10个连续的1.5×1.5米的样方，测定功能性状。此外，还对每个地点的多样性指数进行了量化和比较。使用具有方差最大化旋转选项的主成分分析来分离所有地点植物的特化轴。结果表明，在这三个地点的各个地点，香彩雀利用不同的功能性状作为驱动因素。叶面积、茎皮厚度、细根直径、比根长、生根深度和株高是多马的驱动因素。叶面积、根深度分布、茎比密度、细根直径、叶干物质含量、茎干物质含量、比根长和株高是阿夸加的驱动因素。细根直径,叶干物质含量,根深度分布,叶面积,比根长和株高是拉菲亚的驱动因素。这些性状表明它们具有高度的竞争能力、低易燃性、高效获取和利用资源的能力以及对物理危害的抵抗力。
