Invasion and Control of the Introduced Red Quinine Tree (Cinchona pubescens) in Galápagos: Long-term Impacts on the Native Flora

加拉帕戈斯引进的红奎宁树（金鸡纳毛）的入侵和控制：对当地植物区系的长期影响

• 批准号: 19719015
• 负责人: Professor Dr. Ingo Kowarik
• 金额: --
• 依托单位: Fachgebiet Ökosystemkunde/ Pflanzenökologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2005
• 资助国家: 德国
• 起止时间: 2004-12-31 至 2007-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/19719015?language=en
• 关键词: Invasion; Control; Introduced; Red; Quinine

Oceanic island ecosystems are said to be much more prone to invasions by alien species but studies to support this view are scarce. The introduced red quinine tree (Cinchona pubescens) has spread widely in the highlands of Santa Cruz Island and is clearly one of the most invasive species in Galápagos. Endemic plant species threatened by the quinine invasion include the shrub Miconia robinsoniana in the Miconia zone, the daisy tree Scalesia pedunculata in the Scalesia zone, and the tree fern Cyathea weatherbyana in the Fern-Sedge zone, all endangered according to IUCN red-list criteria.By using quinine as a model species, this project will make an important contribution to the resolution of the following key questions in invasion ecology and response of nontarget species to control efforts:What are the `niche opportunities¿ leading to the successful invasion of quinine?What are the long-term impacts of quinine on the surrounding native vegetation and on ecosystem parameters?What are the impacts of quinine management (manual and chemical control) on native plant communities?The methodological approach is based on analyses of permanent plots and transects (populationand site-orientated parameters) that have already been established in 1998. This provides an excellent opportunity to study invasion processes and related impacts beyond the usual timeframe of short-term studies.The final results from this study willenhance the understanding of mechanisms in invasion processesprovide deeper insights into rarely studied impacts of control on non-target speciesbe incorporated into recommendations for quinine management in Galápagos and on other oceanic archipelagos.

海洋岛屿生态系统据说更容易受到外来物种的入侵，但支持这一观点的研究很少。引进的红奎宁树（Cinchona pubescens）在圣克鲁斯岛的高地广泛传播，显然是加拉帕戈斯最具侵略性的物种之一。受奎宁入侵威胁的特有植物包括Miconia带的灌木Miconia robinsoniana、Scalpus带的雏菊Scalpus pedunculata和Fern-Sedge带的树蕨Cyathea weatherbyana，这些植物均根据IUCN红色名录标准濒临灭绝。该项目将为解决入侵生态学和非目标物种对控制工作的反应中的以下关键问题做出重要贡献：“利基机会是什么？”导致奎宁的成功入侵奎宁对周围的原生植被和生态系统参数有哪些长期影响？奎宁管理（人工和化学控制）对本地植物群落有哪些影响？方法学方法的基础是对1998年已经确定的永久性地块和样带（人口和地点参数）的分析。这提供了一个很好的机会，研究入侵过程和相关的影响超出了通常的短期研究的时间框架，从这项研究的最终结果将提高入侵过程中的机制的理解，提供更深入的了解很少研究的影响，控制非目标物种纳入建议奎宁管理在加拉帕戈斯群岛和其他海洋群岛。