Assemblage Characteristics and Habitat Specificity of Carabid Beetles in a Japanese Alpine-Subalpine Zone

IF 1.6 Q2 ENTOMOLOGY
S. Hiramatsu, N. Usio
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引用次数: 14

Abstract

In lowland areas of the world and high-altitude European mountains, the species compositions, body sizes, and wing forms of carabid beetles are known to change according to vegetation structures. However, little is known regarding the assemblage structure and habitat associations of carabid beetles in Japanese alpine-subalpine areas. We surveyed carabid beetles in four habitats (snow beds, alpine meadows, Pinus scrub, and fell-fields) in the alpine-subalpine zone on Mt. Hakusan, Japan. We surveyed carabid beetles six times between mid-July and late September. Nonmetric multidimensional scaling (NMDS) and analysis of similarities (ANOSIM) revealed three distinct carabid beetle assemblages in snow beds and alpine meadows, Pinus scrub, and fell-fields. The carabid beetle assemblages in the four habitats consisted predominantly of small and/or wingless species with differential spatiotemporal variability in abundance. Biota-environment (BIO-ENV) analyses showed that the percentage coverage by Pinus scrub, soil water content, and ground surface temperature were among the most significant variables affecting carabid beetle compositions. Given their small sizes and reduced wings, which are characteristic traits for limited mobility, and high-level habitat specificity, carabid beetles in the alpine-subalpine zone may serve as an important target group to monitor the impacts of global environmental change on mountain ecosystems.
日本高寒—亚高山带甲甲虫的群落特征及生境特异性
在世界低地和欧洲高海拔山区,已知甲虫的物种组成、体型和翅膀形状会随着植被结构的变化而变化。然而,对于日本高山亚高山地区的甲虫群落结构和栖息地组合知之甚少。我们调查了日本箱山高山亚高山地带的四个栖息地(雪床、高山草甸、松灌丛和秋田)的甲甲虫。我们在7月中旬至9月下旬对甲虫进行了六次调查。非度量多维标度(NMDS)和相似性分析(ANOSIM)揭示了雪床和高山草甸、松灌丛和秋季田地中三种不同的甲甲虫组合。四个栖息地的甲甲虫群落主要由小型和/或无翼物种组成,其丰度在时空上存在差异。生物群落环境(BIO-ENV)分析表明,松灌丛覆盖率、土壤含水量和地表温度是影响金龟甲成分的最显著变量。鉴于其体型小、翅膀缩小(这是行动能力有限的特征)和高水平的栖息地特异性,高山亚高山地区的甲甲虫可能成为监测全球环境变化对山区生态系统影响的重要目标群体。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
1.80
自引率
0.00%
发文量
8
审稿时长
15 weeks
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