智利安第斯山脉中部沿海拔梯度的本地和非本地植物物种的功能和系统发育相似性:没有证据支持预适应假说

IF 5.6 1区 环境科学与生态学 Q1 ECOLOGY
Vinka Anic, Maritza Mihoč, Graciela Valencia, Claudia Reyes-Bahamonde, León A. Bravo, Patricia L. Sáez, Aníbal Pauchard, Lohengrin A. Cavieres
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引用次数: 0

摘要

达尔文提出的预适应假说认为,在系统发育上接近本地物种的非本地物种可能在引进地区取得成功,因为近亲物种可能对环境表现出类似的适应。为了支持这一假说,研究表明,本地植物和非本地植物在受到生境过滤时都具有保守的功能特征,包括低叶面积和比叶面积(SLA)。智利中部安第斯山脉受地中海型气候的影响,表现出相反的水可用性和温度的海拔梯度。在该山区,低海拔干旱和高海拔低温可能会促进本地和非本地共存的植物物种的保守生长策略,从而减少这两个物种群之间的系统发育和功能距离。在这里,我们通过研究沿宽海拔梯度共同发生的本地和非本地植物物种之间的系统发育和功能相似性来验证这一假设。我们在智利中部安第斯山脉的6个海拔高度(海拔高度从1200米到3600米)测量了来自路边生境的原生(N = 91)和非原生(N = 26)植物的6种叶片功能性状。主要性状包括叶面积、叶片表观密度、叶片干物质含量、叶片厚度、叶片氮和叶绿素含量。计算了群落中焦点非本地种相对于本地种的平均功能距离和系统发育距离。与我们的预测相反,我们发现海拔对本地和非本地植物物种之间的功能和系统发育距离没有显著影响。在干旱条件下,本地物种在生境中表现出较低的SLA和较小的叶片。相反,在夏季干旱影响的生境中,非本地物种在整个海拔梯度上表现出高的叶面积值和高的SLA。合成。我们的研究为智利中部安第斯山脉受夏季干旱或低温胁迫影响的生境中本地和非本地植物物种的系统发育亲缘性和功能分化提供了新的证据。在这些恶劣的环境中,在非本地物种中发现的获取叶片特征表明,这些物种的生长策略可能受到干扰和/或护理植物对环境的改变的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Functional and phylogenetic similarity between native and non-native plant species along an elevational gradient in the central Chilean Andes: No evidence for the preadaptation hypothesis

Functional and phylogenetic similarity between native and non-native plant species along an elevational gradient in the central Chilean Andes: No evidence for the preadaptation hypothesis

Functional and phylogenetic similarity between native and non-native plant species along an elevational gradient in the central Chilean Andes: No evidence for the preadaptation hypothesis

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来源期刊
Journal of Ecology
Journal of Ecology 环境科学-生态学
CiteScore
10.90
自引率
5.50%
发文量
207
审稿时长
3.0 months
期刊介绍: Journal of Ecology publishes original research papers on all aspects of the ecology of plants (including algae), in both aquatic and terrestrial ecosystems. We do not publish papers concerned solely with cultivated plants and agricultural ecosystems. Studies of plant communities, populations or individual species are accepted, as well as studies of the interactions between plants and animals, fungi or bacteria, providing they focus on the ecology of the plants. We aim to bring important work using any ecological approach (including molecular techniques) to a wide international audience and therefore only publish papers with strong and ecological messages that advance our understanding of ecological principles.
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