SP9: Multifunctionality and the biodiversity of higher trophic levels

SP9：多功能性和更高营养级的生物多样性

• 批准号: 500087958
• 负责人: Professor Dr. Jörg Müller
• 金额: --
• 依托单位: Lehrstuhl für Terrestrische Ökologie
• 依托单位国家: 德国
• 项目类别: Research Units
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/500087958?language=en
• 关键词: SP9; Multifunctionality; biodiversity; higher; trophic

Higher trophic levels can have an important influence on ecosystem processes. However, in biodiversity-ecosystem function research they are broadly neglected. In this subproject, we will make use of newly available methods for highly standardized assessments of biodiversity in taxa of higher trophic levels as consumer of 1st and 2nd order as well as predators. We will use a set of trap and sampling systems for arthropods, combined with conventional and metabarcoding techniques for identification, sound recorders for bats and birds with autonomous species identification and new adult and established caterpillar insect dummies to measure predation pressure. Furthermore, we will construct functional-phylogenetic distances between species for taxonomical groups of higher trophic level. Additionally, we will calculate multidiversity based on few major and rapidly available functions in the research unit to test three major hypotheses with focus on higher trophic level taxa: H1: Increasing diversity of taxa at higher trophic levels by ESC (α-scale) not only determines multifunctionality at their respective trophic level but also by propagating through different trophic levels. H 2: The variation in multifunctionality by ESC treatment is better explained by functional/phylogenetic than by taxonomic diversities in higher trophic levels. H3: The increase in γ-multifunctionality in ESBC districts compared to control districts is explained by β- and γ-diversities of higher trophic levels. Beyond our subproject, we will contribute substantially to the biodiversity data of the RU. Moreover, we will add the secondary above ground productivity, invertebrate herbivory resistance, predation and parasitism to the RU.

较高的营养水平可能会对生态系统过程产生重要影响。然而，在生物多样性-生态系统功能研究中，它们被普遍忽视。在这个子项目中，我们将利用最新可用的方法，高度标准化地评估营养水平较高的类群中的生物多样性，作为一阶和二阶消费者以及捕食者。我们将使用一套节肢动物的陷阱和采样系统，结合传统和变生物编码技术进行识别，使用具有自主物种识别功能的蝙蝠和鸟类的录音机，以及新的成虫和已建立的毛虫假人来测量捕食压力。此外，我们还将为营养水平较高的分类群构建物种之间的功能系统发育距离。此外，我们将根据研究单位中几个主要的和快速可用的功能来计算多样性，以测试三个主要假设，重点是较高营养级的分类群：H1：通过ESC(α-Scale)增加较高营养级的类群多样性不仅决定了它们各自营养级的多功能性，而且还通过在不同的营养级繁殖来确定多样性。H2：ESC处理的多功能性的变化更好地由功能/系统发生而不是较高营养水平的分类多样性来解释。H3：与对照地区相比，生态系统BC地区γ-多功能性的增加是由于较高营养水平的β-和γ-多样性。除了我们的子项目，我们还将对RU的生物多样性数据做出重大贡献。此外，我们将在RU中增加次生地上生产力、无脊椎动物对草食的抗性、捕食和寄生。