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

沿土地利用梯度信号多样性与传粉者行为之间的相互作用

基本信息

批准号：
107642722
负责人：
Privatdozent Dr. H. Martin Schaefer
金额：
--
依托单位：
Arbeitsgruppe Ecological Networks
依托单位国家：
德国
项目类别：
Infrastructure Priority Programmes
财政年份：
2009
资助国家：
德国
起止时间：
2008-12-31 至 2010-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/107642722?language=en
关键词：
interaction between signal diversity pollinator

项目摘要

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.

植物传粉者网络中的通信有助于构建植物群落。在过去 1.5 年中，我们发现土地利用减少了花朵的颜色多样性并改变了草原的整体颜色。我们现在的总体目标是评估这种变化是否通过改变植物与传粉者和/或食草动物的相互作用来影响植物繁殖。因此，我们将收集所有探索区草原上花卉颜色、种子产量、花蜜数量和质量以及昆虫造访花卉的定量数据。使用视觉模型，我们将分析不同传粉媒介群体的感官生态、植物奖励养分有效性的改变或植物物种丰富度的差异是否影响传粉媒介行为，以及这种变化是否影响植物繁殖。此外，我们将记录食草动物对花朵和植物组织的损害。最后，我们将通过实验操纵花蜜奖励和花色，以梳理关于土地利用制度影响花色的不同功能假设。结合植物繁殖数据，我们可以回答土地利用制度引起的开花植物和动物之间视觉交流的变化是否有助于构建草原植物群落。