Key message

The size of the structural components of the root–pit–mound complex was crucial for high moss species richness. Root plates, pits, and mounds were similar in terms of moss species composition, which was mostly determined by forest type.

Context

Uprooted trees may be colonized by different terricolous mosses including common species and specialists.

Aims

The main aim of the present study was to analyze the relative effects of tree uprooting on mosses.

Methods

We used the parametric ZIGLMM and GLMM models to explain the richness and abundance of the moss species and double constrained correspondence analysis (dc-CA) to analyze species composition.

Results

The size of components of RPM complexes had a positive effect on moss species richness. The species cover of mosses was positively correlated with elevation. Species richness was partly dependent on forest type and species cover on component type and age of the RPM complex. The most important factor diversifying species composition was the type of forest. Species traits were also related to forest communities.

Conclusion

Uprooted trees are worth keeping in forest community, especially large ones. Moreover, the conservation value of uprooted trees in woodlands is higher if they are dispersed in different forest types.

中文翻译：

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中欧山区森林连根拔起的树木上苔藓行会的多样性和组成：连根拔起的成分和环境变量的影响

关键信息

根坑复合体的结构成分的大小对于高苔藓物种丰富度至关重要。根板，基坑和土墩在苔藓种类组成方面相似，这主要由森林类型决定。

语境

连根拔起的树木可能会被不同的苔藓植物定居，包括常见的物种和专家。

目的

本研究的主要目的是分析树木连根拔起对苔藓的相对影响。

方法

我们使用参数ZIGLMM和GLMM模型来解释苔藓物种的丰富度和丰度，并使用双重约束对应分析（dc-CA）分析物种组成。

结果

RPM复合物的组分大小对苔藓物种丰富度具有积极影响。苔藓的物种覆盖度与海拔高度呈正相关。物种丰富度部分取决于森林类型，物种覆盖度取决于RPM复合体的组成类型和年龄。使物种组成多样化的最重要因素是森林类型。物种特征也与森林群落有关。

结论

连根拔起的树木值得在森林群落中保存，特别是大树。此外，如果林中连根拔起的树木分散在不同的森林类型中，其保护价值就更高。