U.S.-New Zealand DDEP: Using a Chronosequence to Investigate Ecosystem Recovery Following Invasive Rat Eradication

美国-新西兰 DDEP：利用时间顺序研究消灭入侵老鼠后的生态系统恢复

• 批准号: 0853846
• 负责人: Oswald Schmitz
• 金额: $ 1.5万
• 依托单位: Yale University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-15 至 2010-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0853846&HistoricalAwards=false
• 关键词: U.S.; New; Zealand; DDEP; Using

0853846SchmitzTitle: U.S.-New Zealand Doctoral Dissertation Enhancement Project: Using a Chronosequence to Investigate Ecosystem Recovery Following Invasive Rat EradicationThis award supports a doctoral dissertation enhancement project between Professor Oswald Schmitz and his graduate student Holly Jones from Yale University, Professor Nicola Nelson at Victoria University in Wellington, New Zealand and Dr. David Towns at the Department of Conservation in Auckland, New Zealand. A key predication of restoration ecology is that systems can be restored to a previous state following a disturbance. However, the potential for systems to entrain into an unrestorable alternate state following a disturbance is often overlooked. Motivated by a test for alternate states, this study combines scientific experimentation with ongoing conversation management actions on offshore islands in New Zealand to learn whether island ecosystems can recover from rat invasion and eradication. Rat invasion and predation on all members of island food webs, and seabirds in particular, can have ecosystem-level consequences, usually mediated by a reduction in seabird-derived nutrients. Seabirds are integral food web members on islands providing nutrients to all members of island food webs and affecting ecosystem properties. As a result, eradication of invasive rats from nonnative ecosystems is a common tool used to restore systems to their preinvasion states. However, it remains unclear whether ecosystems can recover their natural function following invasive rat removal, or whether, without active seabird restoration, rat removal causes ecosystems to jump to alternate, low nutrient states. The measurements the researchers will take on the New Zealand Islands will serve as indicators of recovery relative to currently invaded and never invaded controls.The unique study design will provide a rare ecosystem-scale test of theory and will be effective at informing island managers, due to its realistic scale. The study can accurately assess the success of New Zealand?s island restoration efforts, and this will help in advancing scientific theory and in helping managers to set realistic baselines and recovery expectations for island ecosystems. Local Mori communities will send representatives on island trips to learn more about conservation related research. Scientists at New Zealand?s Landcare Research and at the New Zealand Museum of Natural History will also be involved in the project. The project will also provide the U.S. graduate student with a global research experience. It is anticipated that the student will maintain scientific connections with her New Zealand collaborators for many years after the project is completed.

0853846SchmitzTitle: U.S.-New Zealand Doctoral Dissertation Enhancement Project: Using a Chronosequence to Investigate Ecosystem Recovery Following Invasive Rat EradicationThis award supports a doctoral dissertation enhancement project between Professor Oswald Schmitz and his graduate student Holly Jones from Yale University, Professor Nicola Nelson at Victoria University in Wellington, New Zealand and Dr. David Towns在新西兰奥克兰保护部。 恢复生态学的一个关键预测是，在干扰后，系统可以恢复到以前的状态。 但是，通常会忽略系统进入不可理解的替代状态的潜力。 在对替代状态的测试中，这项研究将科学实验与对新西兰离岸岛屿的持续对话管理行动相结合，以了解岛屿生态系统是否可以从大鼠入侵和消除中恢复过来。 大鼠入侵和对岛屿食品网的所有成员尤其是海鸟的捕食，可能会带来生态系统级别的后果，通常是通过减少海鸟衍生的营养素来介导的。 海鸟是岛上的整体食品网络成员，为岛屿食品网的所有成员提供营养并影响生态系统特性。 结果，从非本地生态系统中消除侵入性大鼠是一种用于恢复其侵入前系统的常见工具。 但是，目前尚不清楚生态系统是否可以在侵入性大鼠去除后恢复其自然功能，或者如果没有主动的海鸟恢复，大鼠去除是否会导致生态系统跳至替代，低营养状态。 研究人员将对新西兰群岛进行的测量将作为相对于当前入侵且从未入侵的控制的恢复指标。 这项研究可以准确评估新西兰的岛屿恢复工作的成功，这将有助于推进科学理论，并帮助管理人员对岛屿生态系统建立现实的基线和恢复期望。 当地的莫里社区将派出岛上旅行的代表，以了解有关保护相关研究的更多信息。 新西兰的土地保健研究和新西兰自然历史博物馆的科学家也将参与该项目。 该项目还将为美国研究生提供全球研究经验。 预计该项目完成后，学生将与她的新西兰合作者保持科学联系。