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Plant functional traits couple with range size and shape in European trees
Global Ecology and Biogeography ( IF 6.4 ) Pub Date : 2024-03-26 , DOI: 10.1111/geb.13838
Gabriele Midolo 1
Affiliation  

AimPlant functional traits are frequently proposed as influential factors in species distribution. However, there is a gap in assessing how plant resource‐economic traits relate to the size and shape of a species' geographical range, and to what extent these relationships are conserved over evolutionary history. Specifically, an acquisitive strategy (characterized by heightened metabolism, shorter lifespan and quicker generation turnover) may promote isotropic range formations, resulting in less elongated and larger ranges. Here, I tested this link using data from 98 native European tree species.LocationPalaearctic.Time periodPresent.Major taxa studiedTrees.MethodsI used chorological maps to quantify two independent range attributes: species' range area and elongation. I considered 28 functional traits linked to resource‐use strategy measured in above‐ and below‐ground organs. I used multi‐response phylogenetic mixed models to calculate the conservative trait correlation (CTC) and the phylogenetically independent correlation (IND) component of each functional trait with range area and elongation.ResultsRange area positively correlated with resource acquisitive strategies, while range elongation correlated with resource conservative strategies. This pattern was consistent across the examined traits but statistically significant in seven out of the 28 traits, including specific leaf area, specific root area and root mycorrhizal colonization. Traits related to leaf and root nutritional status exhibited the weakest relationships with range attributes. Significant correlations were more frequent in the IND component and often showed contrasting trends compared to CTC.Main conclusionsPlant resource‐use strategy emerges as a relevant factor to gain insights on what shapes species' geographical distribution, alongside more established drivers such as dispersal limitation and climatic tolerance. Trait‐range relationships are driven by processes leaving a weak phylogenetic signature. These processes may result from direct selection, where functional traits impact range attributes, or indirect effects, such as the co‐variation of ranges and traits with environmental niche optima.

中文翻译:

欧洲树木的植物功能性状与范围大小和形状的结合

AimPlant 功能性状经常被认为是物种分布的影响因素。然而,在评估植物资源经济性状与物种地理范围的大小和形状之间的关系以及这些关系在进化史上的保守程度方面存在差距。具体来说,获取策略(以新陈代谢加快、寿命缩短和世代更替为特征)可能会促进各向同性范围的形成,从而导致范围更小、范围更大。在这里,我使用来自 98 个欧洲本土树种的数据测试了此链接。LocationPalaearctic.Time periodPresent.Majortaxa StudiesTrees.Methods我使用chorological图来量化两个独立的范围属性:物种的范围面积和伸长率。我考虑了与地上和地下器官测量的资源利用策略相关的 28 种功能特征。我使用多响应系统发育混合模型计算了每个功能性状与范围面积和伸长率的保守性状相关性(CTC)和系统发育独立相关性(IND)分量。结果范围面积与资源获取策略正相关,而范围伸长与资源获取策略正相关。资源保守策略。这种模式在所检查的性状中是一致的,但在 28 个性状中的 7 个性状中具有统计显着性,包括特定叶面积、特定根面积和根菌根定殖。与叶和根营养状况相关的性状与范围属性的关系最弱。与 CTC 相比,IND 部分中的显着相关性更为频繁,并且经常表现出相反的趋势。主要结论植物资源利用策略成为了解影响物种地理分布的因素的相关因素,以及更确定的驱动因素(例如扩散限制和气候)宽容。性状范围关系是由留下弱系统发育特征的过程驱动的。这些过程可能来自直接选择,其中功能性状影响范围属性,也可能来自间接影响,例如范围和性状与环境生态位最佳值的共变。
更新日期:2024-03-26
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