The Roles of Cheaters and Abiotic Stress in the Disruption of a Pollination Mutualism

作弊者和非生物胁迫在破坏授粉互利关系中的作用

• 批准号: 0316110
• 负责人: Candace Galen
• 金额: $ 25万
• 依托单位: University of Missouri-Columbia
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-15 至 2009-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0316110&HistoricalAwards=false
• 关键词: Roles; Cheaters; Abiotic; Stress; Disruption

Mutualisms are ecological relationships in which both participating species benefit. These beneficial interactions are universal among organisms, impacting ecosystem function and community integrity. In this project the investigator addresses the ecological conditions leading to the collapse of a pollination mutualism by conducting three experiments in the field. In the first experiment, nectar-thieving ants will be introduced to plants to determine whether the stability of the pollination mutualism depends on the abundance of floral antagonists. In the second experiment the diversity of pollinators visiting the host plant will be manipulated to test whether alternative pollinator species can buffer a host plant from the destabilizing effect of floral antagonists. The third experiment will manipulate drought stress experimentally to test whether plant-pollinator relationships are more vulnerable to disruption under harsh environmental conditions. The proposed research evaluates how abiotic stress affects the net benefits derived from aplant's relationship with its animal pollinators in the presence and absence of cheaters.

互助是生态关系，两个参与物种都受益。这些有益的相互作用在生物体之间是普遍的，影响了生态系统功能和社区完整性。在该项目中，研究者通过在该领域进行三个实验来解决导致授粉互助崩溃的生态条件。 在第一个实验中，将向植物引入蜜饯的蚂蚁，以确定授粉互助的稳定性是否取决于花卉拮抗剂的丰度。 在第二个实验中，将操纵访问宿主植物的授粉媒介的多样性来测试替代授粉媒介物种是否可以缓冲宿主植物，从花卉拮抗剂的不稳定作用中。 第三个实验将在实验中操纵干旱压力，以测试植物 - 基督关系是否在恶劣的环境条件下更容易受到干扰。拟议的研究评估了在存在和不存在作弊者的情况下，非生物压力如何影响依plant剂与动物传粉媒介的关系产生的净益处。