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INTRODUCTION

This study focuses on the central mountain region of the Peruvian Andes, particularly its western slopes, high-altitude areas, and inter-Andean valleys situated above 3000 m.a.s.l. Despite its ecological importance, the region remains understudied, resulting in significant information gaps.

OBJECTIVE

To identify flora species along an altitudinal gradient in the Cajatambo district.

METHODS

Sampling was carried out at five distinct altitudinal levels using a combination of sampling techniques. Taxonomic identification was performed, and statistical analyses including ANOVA, the Mantel test, and NMDS were applied.

RESULTS

424 plant species were identified, revealing the dominance of Asteraceae. The approach used allowed for the identification of floristic and structural patterns in various habitats, ranging from arid montane scrub to puna grassland. Surprisingly, Asteraceae richness had a significant impact on species diversity, while altitude did not. Additionally, floristic similarity between nearby altitudinal levels was not related to geographical distance. The analysis of ecosystems has shown that certain families are adaptable. Additionally, floristic diversity has been affected by human activity near the district capital. The distribution of medicinal species has been limited due to selective extraction.

CONCLUSIONS

The shrubland and thorny scrub was the most diverse ecosystem and had the widest distribution across the altitudinal gradient.

INTRODUCTION

OBJECTIVE

To identify flora species along an altitudinal gradient in the Cajatambo district.

METHODS

RESULTS

CONCLUSIONS

The shrubland and thorny scrub was the most diverse ecosystem and had the widest distribution across the altitudinal gradient.

引言

本研究聚焦于秘鲁安第斯山脉的中部山区，特别是其西坡、高海拔地区以及海拔3000米以上的安第斯山间谷地。尽管该地区具有重要的生态意义，但仍未得到充分研究，导致存在显著的信息空白。

目的

确定卡哈坦博地区沿海拔梯度的植物物种。

方法

采用多种采样技术在五个不同海拔高度进行采样。进行了分类鉴定，并应用了包括方差分析、曼特尔检验和非度量多维尺度分析在内的统计分析。

结果

共鉴定出424种植物，菊科占优势。所采用的方法能够识别从干旱山地灌丛到普纳草原等各种栖息地的植物区系和结构模式。令人惊讶的是，菊科丰富度对物种多样性有显著影响，而海拔高度则没有。此外，相邻海拔高度之间的植物区系相似性与地理距离无关。生态系统分析表明某些科具有适应性。此外，植物区系多样性受到地区首府附近人类活动的影响。药用植物的分布因选择性采摘而受到限制。