Micronutrients enhance macronutrient effects in a meta-analysis of grassland arthropod abundance

Aim: Ongoing alterations to Earth’s biogeochemical cycles (e.g. via fertilization, burning of fossil fuels, and pollution) are expected to impact plants, plant consumers, and all subsequent trophic levels. While fertilization experiments often reveal arthropod nutrient limitation by nitrogen and phosphorus via effects on plant nutrient density and biomass, these macronutrients are only two of many nutrients important to arthropod fitness. Micronutrients are key to osmoregulation and enzyme function and can interact synergistically with macronutrients to shape the geography of arthropod abundance. We examine arthropod response to macro- and micronutrient fertilization as a function of nutrient type, application amount, duration, frequency, and plant responses to fertilization with the goal of addressing how ongoing alterations to biogeochemical cycles will shape future grassland food webs. Location: Global. Time period: 1987-2018. Major taxa studied: Invertebrates. Methods: We compiled a...研究目标：当前地球生物地球化学循环的持续改变（例如通过施肥、化石燃料燃烧与污染活动）预计会对植物、植食性动物以及所有后续营养级产生影响。尽管施肥实验通常通过影响植物营养密度与生物量，揭示了节肢动物(arthropod)受氮、磷限制的营养限制效应，但这两类大量营养素仅是影响节肢动物适合度的众多营养要素中的两种。微量营养素对于渗透压调节与酶功能至关重要，且可与大量营养素产生协同交互作用，共同塑造节肢动物丰度的地理分布格局。本研究以解析生物地球化学循环的持续改变将如何塑造未来草地食物网为目标，考察节肢动物对大量与微量营养素施肥的响应，该响应随营养类型、施用量、持续时长、施用频率以及植物对施肥的响应而变化。 研究区域：全球范围。 研究时段：1987年-2018年。 研究类群：无脊椎动物。 研究方法：本研究汇编了……