斯洛文尼亚亚地中海草原不同生境斑块中食腐圣甲虫科的竞争与季节共存

IF 0.4 4区 环境科学与生态学 Q4 ECOLOGY
J. Jugovic, T. Koren, N. Koprivnikar
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引用次数: 1

摘要

摘要:我们在斯洛文尼亚亚地中海喀斯特草甸的两个研究地点研究了食粪Scarabaeoidea的物种组成和季节共存。每个地点由三个栖息地斑块组成,具有不同的放牧影响(S1,牧场的活动部分;S2,牧场的杂草丛生部分,主要是多刺灌木;S3,围栏牧场外的草地,有一些杂草丛生的灌木斑块)。从3月到11月,每月进行四次陷阱捕获活动,以测试物种在时间、空间和栖息地方面的分离。初步结果显示,群落内部和之间的物种在时间上存在高度隔离(Aphodidae–居民、Geotrupidae–隧道工、Scarabaidae–隧洞工、Scarrabaidae-滚筒工)。Aphodidae–居民(在季节开始和结束时最活跃,在炎热的夏季有一个月完全不活动)和Scarabaidae–隧道工(一直存在,但在季节开始或结束时物种和标本最少)之间的月度样本时间分离明显。公会内部的竞争对Aphodidae居民和Geotrupidae隧道工来说最为突出,在这些物种中,物种表现出高的时间回避率,以最大限度地减少种间对相同食物来源的竞争。最后,在物种组成、物种丰富度和丰度方面发现了地理(站点相关)和栖息地相关(S1、S2、S3)的差异,但后两个参数仅在栖息地水平上存在差异(S1的物种更多,但S2和S3的丰度更高)。结果表明,显著的时间和空间隔离有助于在空间和时间上提高生物多样性,并允许更多物种随着时间的推移在同一地点共存。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Competition and Seasonal Co-Existence of Coprophagous Scarabaeoidea (Coleoptera) in Differently Managed Habitat Patches of Sub-Mediterranean Grasslands in Slovenia
ABSTRACT We studied species composition and seasonal co-existence of coprophagous Scarabaeoidea from two study sites in karst meadows in sub-Mediterranean Slovenia. Each site consisted of three habitat patches with different impact of grazing (S1, the active part of the pasture; S2, the overgrown part of the pasture, mainly spiny shrubs; S3, a meadow with some overgrown patches of shrubs outside the fenced pasture). Four pitfall trapping events per month were conducted from March until November to test for temporal, spatial and habitat-related segregation of species. Primary results show a high level of temporal segregation of species within and between the guilds (Aphodiidae – dwellers, Geotrupidae – tunnelers, Scarabaeidae – tunnelers, Scarabaeidae – rollers). Temporal segregation of monthly samples was evident between Aphodiidae – dwellers (most active at the beginning and end of the season, with a month of complete inactivity during hot summer) and Scarabaeidae – tunnelers (present all the time, but with least species and specimens at the beginning and end of season). Intra-guild competition was most prominent for Aphodiidae – dwellers and Geotrupidae – tunnelers, where species show high rate of temporal avoidance to minimize interspecies competition for the same food source. Finally, geographical (site-related) and habitat-related (S1, S2, S3) differences were found in species composition, species richness and abundance, however for the latter two parameters only at habitat level (more species at S1, but higher abundances at S2 and S3). The results imply that the pronounced temporal and spatial segregation facilitate higher biodiversity in space and time, and allow more species to co-exist at the same sites over time.
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来源期刊
Polish Journal of Ecology
Polish Journal of Ecology 环境科学-生态学
CiteScore
1.10
自引率
0.00%
发文量
9
审稿时长
18-36 weeks
期刊介绍: POLISH JOURNAL OF ECOLOGY (formerly Ekologia polska) publishes original scientific research papers dealing with all aspects of ecology: both fundamental and applied, physiological ecology, evolutionary ecology, ecology of population, community, ecosystem, landscape as well as global ecology. There is no bias regarding taxons, ecosystems or geographical regions.
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