Land use effects on response diversity in animal - plant interactions (Acronym: RESPONSE)

土地利用集约化被认为是对生物多样性和生态系统功能的威胁，但人们对其机制和后果知之甚少。拟议项目的目标是了解响应多样性——除了更普遍研究的生物多样性和功能多样性之外——如何随土地利用而变化。响应多样性是生态系统功能恢复的先决条件，这表明系统对干扰的保障依赖于对环境变化的不同响应的功能“冗余”物种。本研究将重点研究传粉昆虫、食草动物和植物的温度响应和相关干旱胁迫的种间变化。除了平均气温的增加，冬季和夏季气温的变化也可能随着气候变化而增加，极端条件的时期变得更加频繁。这种可变性将以不同的方式影响物种。核心问题是，与生物多样性减少相对应的土地利用增加是否会导致社区响应多样性和预估复原力降低。该项目将首次以植物-传粉者和植物-食草动物相互作用网络为目标系统，对土地利用对功能冗余和响应多样性的影响进行大规模调查。

Land use intensification is considered a threat to biodiversity and ecosystem functioning, but mechanisms and consequences are poorly understood. The goal of the proposed project is to understand how response diversity – in addition to the more commonly studied biodiversity and functional diversity – changes with land use. Response diversity is the prerequisite for the resilience of ecosystem functions, suggesting that the insurance of a system against disturbance relies on functionally ‘redundant’ species that differ in their responses to environmental changes. This study will focus on interspecific variation in temperature responses and related drought stress in pollinators, herbivores and plants. Besides an increase in average temperature, variation in winter and summer temperatures are likely to increase with climate change, and periods with extreme conditions become more frequent. This variability will affect species in different ways. The core question is whether increasing land use, corresponding to decreased biodiversity, leads to lower response diversity and projected resilience in communities. The project will present the first large-scale investigation of land use impacts on functional redundancy as well as response diversity, using plant-pollinator and plant-herbivore interaction networks as target systems.