Plant functional traits couple with range size and shape in European trees

IF 6.3 1区环境科学与生态学 Q1 ECOLOGY Global Ecology and Biogeography Pub Date : 2024-03-26 DOI:10.1111/geb.13838

Gabriele Midolo

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Abstract

Aim

Plant 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.

Location

Palaearctic.

Time period

Present.

Major taxa studied

Trees.

Methods

I 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.

Results

Range 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 conclusions

Plant 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.

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欧洲树木的植物功能特征与分布区大小和形状的关系

目的植物功能特征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分布区的大小和形状之间的关系，以及这些关系在进化史中的保留程度方面还存在空白。具体来说，获取策略（特点是新陈代谢旺盛、寿命较短和世代更替较快）可能会促进各向同性的分布区形成，从而导致分布区的拉长和扩大。在此，我利用 98 种欧洲本土树种的数据测试了这一联系。方法我使用脉络图来量化两个独立的分布区属性：物种的分布区面积和延伸率。我考虑了通过地上和地下器官测量的 28 个与资源利用策略相关的功能特征。我使用多反应系统发育混合模型计算了每个功能特征与分布区面积和延伸率的保守性状相关性（CTC）和系统发育独立相关性（IND）。这种模式在所考察的性状中是一致的，但在 28 个性状中有 7 个性状具有显著的统计学意义，其中包括特定叶面积、特定根面积和根菌根定植。叶片和根营养状况相关性状与牧场属性的关系最弱。与 CTC 相比，IND 成分中的显著相关性更为频繁，而且往往呈现出截然不同的趋势。主要结论植物资源利用策略是影响物种地理分布的一个相关因素，它与诸如扩散限制和气候耐受性等更成熟的驱动因素并存。性状范围关系是由留下微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，即功能性状对分布区属性的影响；也可能来自间接影响，如分布区和性状与最佳环境生态位的共同变化。

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来源期刊

Global Ecology and Biogeography 环境科学-生态学

CiteScore

12.10

自引率

3.10%

发文量

170

审稿时长

3 months

期刊介绍： Global Ecology and Biogeography (GEB) welcomes papers that investigate broad-scale (in space, time and/or taxonomy), general patterns in the organization of ecological systems and assemblages, and the processes that underlie them. In particular, GEB welcomes studies that use macroecological methods, comparative analyses, meta-analyses, reviews, spatial analyses and modelling to arrive at general, conceptual conclusions. Studies in GEB need not be global in spatial extent, but the conclusions and implications of the study must be relevant to ecologists and biogeographers globally, rather than being limited to local areas, or specific taxa. Similarly, GEB is not limited to spatial studies; we are equally interested in the general patterns of nature through time, among taxa (e.g., body sizes, dispersal abilities), through the course of evolution, etc. Further, GEB welcomes papers that investigate general impacts of human activities on ecological systems in accordance with the above criteria.