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首页> 外文期刊>Invasive Plant Science and Management >Rethinking Invasion Impacts across Multiple Field Sites Using European Swallowwort (Vincetoxicum rossicum) as a Model Invader
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Rethinking Invasion Impacts across Multiple Field Sites Using European Swallowwort (Vincetoxicum rossicum) as a Model Invader

机译：使用欧洲SwallowWort（Vincetoxicum Rossicum）作为模型入侵者的多个现场网站的重新思考入侵影响

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摘要

European swallowwort [Vincetoxicum rossicum (Kleopow) Barbarich] is found in the northeastern United States and southeastern Canada. It forms dense growth patterns that reduce plant and insect biodiversity, and lab assays show that it produces allelopathic compounds that affect microbial activity. Consequently, we hypothesized that V. rossicum alters soil microbiome composition and activity in invaded habitats, which may impact ecosystem properties and processes. We sampled soil from a similar time point within a growing season at each of five sites in New York State where V. rossicum was both present and absent. We measured bacterial and fungal microbiome composition, available soil nitrogen (N), soil respiration (CO2 flux), and soil extracellular enzyme activities. Microbial composition varied across field sites, but only fungal composition was affected by invasion. No significant differences were found between the invaded and uninvaded plots at any of the sites for available soil ammonium, nitrate, or respiration, though extractable N varied greatly between sites. Microbial hydrolytic extracellular enzyme activities suggest decreased protein degradation and increased oxidative enzyme activity with V. rossicum invasion, which is relevant to soil N and carbon cycling processes. Although V. rossicum impacted rhizosphere microbial composition and activity, it was not associated with large perturbations in ecosystem function when examined across multiple invasion sites during this short-term study.
机译：欧洲SwallowWort [Vincetoxicum rossicum（kleopow）barbarich]在美国东北部和加拿大东南部发现。它形成致密的生长模式，减少植物和昆虫生物多样性，实验室测定表明它产生影响微生物活性的化感化合物。因此，我们假设V. rossicum改变了侵袭栖息地的土壤微生物组成和活性，这可能会影响生态系统性质和过程。我们在纽约州的五个地点中的一个生长季节中的类似时间点取样了土壤，其中V.Rossicum都存在，缺席。我们测得细菌和真菌微生物组合物，可用土壤氮（N），土壤呼吸（CO2助焊剂）和土壤细胞外酶活性。微生物组成在田间位点变化，但只有真菌组合物受到侵袭的影响。在任何位点的侵袭和未剥削的地块之间没有发现显着的差异，用于可用的土壤铵，硝酸盐或呼吸，但在位点之间可提取的N变化。微生物水解细胞外酶活性表明蛋白质降低和随着Rossicum侵袭的氧化酶活性增加，与土壤n和碳循环过程相关。虽然V. rossicum受到根际微生物组成和活性，但在此短期研究期间在多种侵入位点检查时，它与生态系统函数的大扰动无关。

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