The interaction between signal diversity and pollinator behaviour along a land use gradient

植物-传粉者网络中的通信有助于构建植物群落。在过去的一年半里，我们发现土地利用减少了花卉的颜色多样性，改变了草原的整体色彩。我们现在的总体目标是评估这种变化是否通过改变它们与传粉者和/或食草动物的相互作用来影响植物繁殖。因此，我们将收集有关花卉色彩，种子生产，花蜜数量和质量以及昆虫访问所有Exploratories草原花卉的定量数据。使用可视化建模，我们将分析是否不同的传粉者群体的感官生态，改变植物奖励的养分供应或丰富的植物物种的差异影响传粉者的行为，以及这种变化是否影响植物繁殖。此外，我们将记录草食动物对花和营养组织的损害。最后，我们将实验性地操纵花蜜奖励和花色，以梳理不同的功能假说，为什么土地利用制度影响花色。结合植物繁殖的数据，我们可以回答是否在显花植物和动物之间的视觉交流，是由土地利用制度的变化，有助于在草原植物群落的结构。

Communication in plant-pollinator networks contributes to structuring plant communities. In the last 1.5 years, we found that land use diminishes colour diversity of flowers and changes the overall colouration of grasslands. Our overall aim is now to assess whether that change affects plant reproduction by altering their interactions with pollinators and/or herbivores. We will therefore collect quantitative data on floral colouration, seed production, nectar quantity and quality as well as insect visitation to flowers in the grasslands of all Exploratories. Using visual modelling we will analyse whether the sensory ecology of different pollinator groups, altered nutrient availability of plant rewards or differences in the abundance of plant species affect pollinator behaviour, and whether that change affects plant reproduction. Moreover, we will record herbivore damage of flowers and of vegetative tissue. Finally, we will experimentally manipulate nectar rewards and floral colours to tease apart different functional hypothesis on why land use regimes affect floral colour. Combined with data on plant reproduction, we can thus answer whether changes in the visual communication between flowering plants and animals that are caused by land use regimes contribute to structuring plant communities in the grasslands.