Collembola (Arthropoda) communities of forest ecosystems in Changbai Mountain, northeast China: Trophic structure, changes with altitude and response to increased temperature

长白山森林生态系统跳虫（节肢动物）群落：营养结构、海拔变化及对气温升高的响应

• 批准号: 410763525
• 负责人: Professor Dr. Stefan Scheu
• 金额: --
• 依托单位: National Natural Science Foundation of China
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/410763525?language=en
• 关键词: Collembola; Arthropoda; communities; forest; ecosystems

Collembola (sprintails) are among the most abundant and diverse soil animals contributing significantly to major ecosystem processes such as decomposition and nutrient cycling. Global changes in temperature and precipitation are likely to affect their community structure and functioning and this is likely to differ along altitudinal gradients. The project focuses on Collembola communities of forest ecosystems along altitudinal gradients in northeastern China (Changbai Mountain). It aims at investigating (1) changes in the community structure of Collembola along altitudinal transects spanning from about 800 to 1850 m, (2) changes in the trophic structure of Collembola along these altitudinal transects, (3) assembly mechanisms of Collembola communities using community phylogenetics, and (4) the response of Collembola communities to experimental warming simulating an increase in temperature predicted to occur in the 21st century. Community structure of Collembola will be based on sampling Collembola along three replicated altitudinal transects at hight intervals of 150 m and determining Collembola to species / morphospecies. The trophic structure of Collembola will be investigated using natural variations in stable isotope signatures and lipid analysis. As basis for using community phylogenetics, Collembola species will be sequenced using a set of markers allowing to quantify genetic relationships of local species. Traits of species will be mapped on the phylogenetic tree to evaluate phylogenetic signal and allow to identify traits responsible for changes in community composition with altitude. The response of Collembola to increased temperature will be investigated in a full factorial experiment incubating in the laboratory soil cores taken in the field by simulating an increase in temperature of 2°C and 4°C, and inspecting changes in community structure, trophic niches and trait distribution of Collembola species. Overall, the study aims at using Collembola as model soil organisms for identifying traits responsible for soil animal community assembly processes across a wide range of environmental conditions, thereby identifying the mechanisms driving these changes and allowing to predict changes in soil animal communities with global temperature changes.

Collembola（Sprintails）是最丰富，最多样化的土壤动物之一，对主要生态系统过程（例如分解和营养循环）做出了重要贡献。全球温度和降水的变化可能会影响其社区结构和功能，这在海拔梯度上可能会有所不同。该项目着重于中国东北部（Changbai Mountain）沿着海拔梯度沿森林生态系统的Collembola社区。 It aims at investigating (1) changes in the community structure of Collembola along altituinal transects spanning from about 800 to 1850 m, (2) changes in the trophic structure of Collembola along these altituinal transects, (3) assembly mechanisms of Collembola communities using community phylogenetics, and (4) the response of Collembola communities to experimental warming simulating an increase in temperature predicted to occur in the 21世纪。 Collembola的社区结构将基于以150 m的高间隔沿三个复制的高度样带进行采样，并确定胶曲板到物种 /形态的物种。将使用稳定的同位素特征和脂质分析中的自然变异来研究胶体曲板的营养结构。作为使用社区系统发育学的基础，将使用一组允许量化局部物种的遗传关系的标记来测序Collembola物种。物种的特征将在系统发育树上映射，以评估系统发育信号，并允许识别负高度社区组成变化的特征。将在一个完整的阶乘实验中研究Collembola对温度升高的反应，该实验通过模拟2°C和4°C的温度升高，并检查社区结构，营养性壁ches和Collembola物种特质分布的变化，从而在现场孵化。总体而言，该研究旨在使用胶体曲面作为模型土壤生物，以识别负责土壤动物群落组装过程的特征，从而确定驱动这些变化的机制，并允许预测随着全球温度变化的土壤动物社区的变化。