Liana dynamics in secondary and mature forests are well known in tropical areas dominated by native tree species. Outside the tropics and in secondary forests invaded by exotic species, knowledge is scarce. In this study, we compare liana communities between secondary and mature forests dominated by native species in a subtropical montane area of Sierra de San Javier, Tucuman, Argentina. Additionally, we evaluate changes of liana communities in secondary forests with increasing densities of Ligustrum lucidum and Morus alba, two of the most invasive exotic trees of the area. We surveyed liana species richness and density in three 30‐year secondary patches, four 60‐year secondary patches, and four mature patches dominated by native tree species, to analyze changes in liana communities with forest age. Within each patch, we sampled 10–25 20 × 20 m quadrats. Additionally, we surveyed liana density and species richness in secondary forest patches with different densities of L. lucidum and M. alba. In native‐dominated forests, liana species richness increased and showed a tendency of increasing basal area from 30‐year secondary forests to mature forests. Liana density was highly variable, and most of the species were shared between native‐dominated secondary and mature forests. Liana density and species richness decreased with L. lucidum density, whereas in secondary forests highly dominated by M. alba, lianas increased in density. Overall, lianas followed different pathways influenced by native forest succession and exotic tree invasions.

中文翻译：

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阿根廷西北部森林中藤本植物群落的替代途径

在以原生树种为主的热带地区，次生林和成熟林的藤本植物动态是众所周知的。在热带地区以外以及在外来物种入侵的次生森林中，知识很少。在这项研究中，我们比较了阿根廷土库曼塞拉德圣哈维尔的亚热带山地地区次生林和成熟林之间的原生植物为主的藤本植物群落。此外，我们评估了随着女贞和白桑密度的增加，次生林中藤本植物群落的变化，是该地区最具侵入性的两棵外来树木。我们调查了三个以30年为次生斑块，四个以60年为次生斑块和四个以原生树种为主的成熟斑块的藤本植物物种的丰富度和密度，以分析随着森林年龄的藤本植物群落的变化。在每个面片中，我们采样了10–25 20×20 m的正方形。此外，我们调查了L. lucidum和M. alba不同密度的次生林区的藤本植物密度和物种丰富度。在以原生林为主的森林中，藤本植物的物种丰富度增加，并显示出从30年的次生林到成熟林的基础面积增加的趋势。藤本植物的密度变化很大，大多数树种在原生林和次生林之间共享。藤本植物的密度和物种丰富度随灵芝的密度而降低，而在以白花苜蓿为主的次生林中，藤本植物的密度增加。总体而言，藤本植物遵循不同的途径，受到本地森林演替和外来树木入侵的影响。