Introduction

The bryophyte flora of Hungary was relatively well studied during the twentieth century, but data on the present-day frequency and geographical distribution of Hungarian bryophytes are lacking. We present here our preliminary results based on recent fieldwork and herbarium studies.

Methods

We recorded bryophyte occurrences in grid cells (quadrants) of approximately 5.5 × 6 km. Frequency was determined based on the number of quadrants, and geographical distribution evaluated in terms of the 19 administrative units (counties) of the country. To investigate correlations between species richness and relevant environmental drivers, statistical analyses were carried out.

Key results

A total of 698 bryophyte taxa (2 hornworts, 151 liverworts and 545 mosses) have been found in the territory of Hungary. For each of the 637 taxa that have been observed since 1973, one of five frequency classes (very common, common, sporadic to frequent, rare, and very rare) has been assigned based on the relevant number of field records or herbarium specimens. Additionally, tabular distributional information (occurrence in each of the 19 counties) is presented for each taxon. In the statistical evaluation of the geographical distribution data, the elevational range and the size of the surveyed area were positively correlated with bryophyte richness, whereas arable land cover was negatively correlated.

Conclusions

Although the survey was not uniform or complete across the different counties, the results support some robust bryogeographical theories. We hope to have the opportunity in the near future to compile a new Hungarian bryophyte Red List, partly based on these national frequency data.

中文翻译：

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基于“最近”（1974-2022）记录的匈牙利苔藓植物频率和分布的初步数据

介绍

二十世纪，匈牙利的苔藓植物区系得到了相对充分的研究，但缺乏有关匈牙利苔藓植物目前频率和地理分布的数据。我们在此介绍基于最近的实地考察和植物标本室研究的初步结果。

方法

我们记录了约 5.5 × 6 km 网格单元（象限）中苔藓植物的出现情况。频率根据象限数确定，地理分布根据全国19个行政单位（县）进行评估。为了调查物种丰富度与相关环境驱动因素之间的相关性，进行了统计分析。

主要成果

匈牙利境内共发现了698种苔藓植物类群（2种金鱼藻、151种地钱和545种苔藓）。对于自 1973 年以来观察到的 637 个分类群中的每一个，都根据现场记录或植物标本的相关数量分配了五个频率类别之一（非常常见、常见、零星到频繁、罕见和非常罕见）。此外，还提供了每个分类单元的表格分布信息（在 19 个县中的每个县中出现）。在地理分布数据的统计评价中，调查区域的海拔范围和面积与苔藓植物丰富度呈正相关，而耕地覆盖则呈负相关。

结论

尽管不同县的调查并不统一或完整，但结果支持了一些强有力的苔藓地理学理论。我们希望在不久的将来有机会编制一份新的匈牙利苔藓植物红色名录，部分基于这些国家频率数据。