大蒜芥(十字花科 Alliaria petiolata)入侵对城市森林土壤中口器螨的影响随入侵地块的大小而变化

IF 2 3区 农林科学 Q3 ECOLOGY
Leah Flaherty , Melissa Hills , Victoria Giacobbo , Paige Kuczmarski , Morgan Momborquette , Lisa Lumley
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引用次数: 0

摘要

投资非本地物种管理应了解其影响,包括对本地生物多样性和生态系统功能的影响。Oribatid 土壤螨可能有助于评估植物入侵的影响,因为它们是干扰和土壤生态系统健康的生物指标。不过,还需要更多的研究来确定它们对植物入侵的反应特征,尤其是在物种水平上。我们的目标是确定一种等效性杂草(大蒜芥,Alliaria petiolata(十字花科))入侵城市森林林下对地下鸟螨物种和群落的影响。在加拿大阿尔伯塔省中部的两个地点,我们用两年时间考察了被大蒜芥入侵的地块和未被大蒜芥入侵但具有原生植被的地块中的成年口螨(≥ 300 µm)群落组合、物种丰富度、均匀度、多样性和丰度。此外,还对已知与土壤无脊椎动物群落相关的环境协变量进行了评估。结果表明,大蒜芥入侵的空间范围(斑块面积)介导了其对口螨群落的影响。但是,如果将入侵视为二元因素(大蒜芥与本地植被),则不会对群落产生影响。大蒜芥的斑块面积影响了兽螨群落的组成,并与物种丰富度和一些丰度指标呈正相关。我们观察到的受益于大蒜芥入侵的兽脚类物种以前曾与受干扰的土壤有关。驱动这些模式的机制还需要更多的研究,但我们推测它们可能与特定斑块的驻留时间有关。地点也是影响口唇螨群落的一个主要因素,在物种和/或群落水平上也发现了年份、枯落物深度和冠层覆盖的影响。这些发现有助于我们理解入侵杂草对生物指示土壤螨群落和物种的影响,并强调了在评估入侵物种对地下无脊椎动物群落的影响时,考虑入侵背景(包括空间范围)的重要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Impacts of garlic mustard (Alliaria petiolata, Brassicaceae) invasion on oribatid mites in urban forest soils vary with the size of the invaded patch

Impacts of garlic mustard (Alliaria petiolata, Brassicaceae) invasion on oribatid mites in urban forest soils vary with the size of the invaded patch

Investment in non-native species management should be informed by knowledge of impact, including on native biodiversity and ecosystem function. Oribatid soil mites may be useful to evaluate the impacts of plant invasions since they are bioindicators of disturbance and soil ecosystem health. Still, more research is needed to characterize their responses to plant invasion, especially at the species level. Our objective was to determine the effect of invasion of urban forest understories by an allelopathic weed (garlic mustard, Alliaria petiolata (Brassicaceae)) on belowground oribatid mite species and communities. At two sites in central Alberta (Canada), over two years, we examined adult oribatid (≥ 300 µm) community assemblages, species richness, evenness, diversity, and abundance in plots invaded with garlic mustard and uninvaded plots with native vegetation. Environmental covariates known to be associated with soil invertebrate communities were also evaluated. Results suggest that the spatial extent of the garlic mustard invasion (patch area) mediates its impact on oribatid mite communities. However, there were no community-level impacts when considering invasion as binary (garlic mustard vs. native vegetation). Garlic mustard patch area influenced oribatid community composition and was positively related to species richness and several abundance metrics. The oribatid species we observed benefiting from garlic mustard invasion have been previously associated with disturbed soils. The mechanisms driving these patterns need more research, but we hypothesize they may relate to patch-specific resident times. Site was also a dominant factor influencing oribatid mite communities, and impacts of year, litter depth, and canopy cover were also detected at the species and/or community level. These findings contribute to our understanding of the impact of an invasive weed on bioindicating soil mite communities and species and highlight the importance of considering invasion context, including spatial extent when evaluating the impacts of invasive species on belowground invertebrate communities.

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来源期刊
Pedobiologia
Pedobiologia 环境科学-生态学
CiteScore
4.20
自引率
8.70%
发文量
38
审稿时长
64 days
期刊介绍: Pedobiologia publishes peer reviewed articles describing original work in the field of soil ecology, which includes the study of soil organisms and their interactions with factors in their biotic and abiotic environments. Analysis of biological structures, interactions, functions, and processes in soil is fundamental for understanding the dynamical nature of terrestrial ecosystems, a prerequisite for appropriate soil management. The scope of this journal consists of fundamental and applied aspects of soil ecology; key focal points include interactions among organisms in soil, organismal controls on soil processes, causes and consequences of soil biodiversity, and aboveground-belowground interactions. We publish: original research that tests clearly defined hypotheses addressing topics of current interest in soil ecology (including studies demonstrating nonsignificant effects); descriptions of novel methodological approaches, or evaluations of current approaches, that address a clear need in soil ecology research; innovative syntheses of the soil ecology literature, including metaanalyses, topical in depth reviews and short opinion/perspective pieces, and descriptions of original conceptual frameworks; and short notes reporting novel observations of ecological significance.
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