The effect of forest management intensity, tree species and fungal-bacterial diversity on resource use, decomposition and gas emissions in dead Wood FunWood IV

森林生态系统中的木材分解是一个非常重要的过程，具有巨大的生态后果。枯木是森林生态系统的重要组成部分，影响着森林生态系统的许多功能，其中最重要的是固碳、养分循环和为林栖生物提供生境。因此提出的FunWood IV项目将侧重于枯木分解中的生态系统功能和相应的生物多样性。目的是通过实验验证物种丰富度的增加是否会导致枯枝分解者群落功能多样性的增加，以及森林经营强度对分解者多样性和生态系统过程的影响。FunWood IV将联合收割机结合一系列最先进的技术（扩增子基因测序、元蛋白质组学、蛋白质SIP、CO2排放率和C/N含量分析），以更好地了解分解者社区如何在波动的温度下执行木材降解过程。此外，我们还提供了在不同地理尺度上，沿着森林管理强度的梯度，将生态系统过程（如树木腐烂和树种上的微生物多样性）与沿着进行关联的机会。DFG优先计划1374（生物多样性探索长期枯木）联合会：（i）调查枯木分解者群落的功能多样性，㈡评估木材分解群落对温度波动的功能和结构反应;利用枯枝落叶分解率分析了森林经营强度和树种对生物多样性的影响。

Wood-decomposition in forest ecosystems is a very important process with immense ecological consequences. Dead wood is an important structural component of forest ecosystems and it influences a large number of ecosystem functions of which the most relevant are C sequestration, nutrient cycling, and habitat provision for wood-dwelling organisms. The hereby proposed FunWood IV project will focus on ecosystem functions in dead wood decomposition and corresponding biodiversity. It aims to test experimentally whether increasing species richness will result in higher functional diversity in dead wood decomposer communities, and how the decomposer diversity and ecosystem processes are influenced by forest management intensity. FunWood IV will combine a range of state-of-the-art techniques (amplicon gene sequencing, metaproteomics, protein-SIP, CO2 emission rate and C/N content analyses) to provide an improved understanding on how decomposer communities execute wood degradation processes under fluctuating temperatures. In addition, we provide the opportunity to correlate between ecosystem processes such as wood decay and microbial diversity over tree species and along a gradient of forest management intensity on various geographic scales.The project FunWood IV targets three major objectives within the BeLong Dead (Biodiversity Exploratories Long term Dead Wood) consortium of DFG Priority Programme 1374: (i) to investigate the functional diversity in dead wood decomposer communities, (ii) to assess the functional and structural response of the wood-decomposing community to temperature fluctuations and (iii) to analyse the effect of forest management intensity and tree species on biodiversity accomplished with decomposition rates in dead wood.