Abstract Soil properties and the growth and maturation of herbaceous plants are known to be influenced by the soil fauna (Collembola) and by the temperature. But little is known about how these two factors interact. We hypothesised that the vegetative and reproductive responses of Poa annua L. to the presence of soil Collembola density will change according to temperature. P. annua was grown in microcosms with or without Collembola at two different air temperature conditions, 16 °C as a Low T° vs. 19 °C as a High T°. Both factors “Collembola” and “Temperature” significantly influenced several plant and soil variables. The number of flowers, the root biomass of P. annua were higher either in presence of Collembola or under elevated temperature. The same applied for soil ergosterol or K content for example. Soil nitrate content was exclusively affected by the presence/absence of Collembola and not by the temperature. Finally, significantly interactive effects between temperature and Collembola upon several plant or soil variables (root biomass, number of flowers, soil K and Mg content) were shown. Our study suggests that biotic factors (here soil fauna) may strongly interact with climatic variables in regulating plant growth through changes in soil nutrient availability. We provide experimental evidence that climate warming modifies the effect of soil Collembola on the reproduction strategy of the plant.

中文翻译：

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温度会改变植物对跳虫存在的反应程度

摘要 众所周知，土壤特性以及草本植物的生长和成熟受土壤动物群 (Colembola) 和温度的影响。但是关于这两个因素如何相互作用却知之甚少。我们假设 Poa annua L. 对土壤弹尾虫密度存在的营养和繁殖反应会根据温度而变化。在两种不同的气温条件下，青蒿在有或没有跳虫的微观世界中生长，16 °C 作为低 T° 与 19 °C 作为高 T°。“Colembola”和“温度”这两个因素都显着影响了几个植物和土壤变量。无论是在弹尾虫存在下还是在高温下，青蒿的花数和根生物量都较高。例如，这同样适用于土壤麦角甾醇或 K 含量。土壤硝酸盐含量仅受跳虫存在/不存在的影响，而不受温度的影响。最后，显示了温度和跳虫之间对几个植物或土壤变量（根生物量、花数、土壤 K 和 Mg 含量）的显着交互影响。我们的研究表明，生物因素（这里是土壤动物群）可能与气候变量强烈相互作用，通过土壤养分有效性的变化来调节植物生长。我们提供了实验证据，表明气候变暖会改变土壤弹尾虫对植物繁殖策略的影响。土壤 K 和 Mg 含量）。我们的研究表明，生物因素（这里是土壤动物群）可能与气候变量强烈相互作用，通过土壤养分有效性的变化来调节植物生长。我们提供了实验证据，表明气候变暖会改变土壤弹尾虫对植物繁殖策略的影响。土壤 K 和 Mg 含量）。我们的研究表明，生物因素（这里是土壤动物群）可能与气候变量强烈相互作用，通过土壤养分有效性的变化来调节植物生长。我们提供了实验证据，表明气候变暖会改变土壤弹尾虫对植物繁殖策略的影响。