CRB: Competitive and Demographic Trade-offs: Restoration of Tallgrass Prairie

CRB：竞争和人口的权衡：高草草原的恢复

• 批准号: 0344625
• 负责人: Maria Miriti
• 金额: $ 30万
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-03-01 至 2008-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0344625&HistoricalAwards=false
• 关键词: CRB; Competitive; Demographic; Trade; offs

The restoration of human altered landscapes to natural ecosystems provides an ideal test bed for ecological theory while yielding practical benefits to public and private sectors. For practitioners of restoration ecology, the establishment of native prairie on former agricultural or commercial land is often hindered by the competitive success of weedy species. Our research entails experiments to compare the performance of native North American prairie plants with the non-native species they compete against in restoration projects. We propose that the overall competitive ability of a population of plants, such as the native grass Big Bluestem, is the end result of a heirarchy of biological processes, from seed germination through death. In our study we will develop computer models of these species' long-term population dynamics under fertile or infertile soil conditions. By comparing model predictions with results from a prairie restoration we will test current theories of differential resource use among plants and the effect these differences have on the final species makeup of restored ecosystems. Ohio State University at Marion, where our field work will take place, is a small regional campus serving a largely agricultural community. We have entered into a science education partnership with an area high school to develop field exercises in which students will gather data in parallel with project scientists.

将人为改变的景观恢复为自然生态系统提供了一个理想的生态理论试验平台，同时为公共和私营部门带来了实际利益。对于恢复生态学的实践者来说，在原来的农业或商业用地上建立原生草原经常受到杂草物种竞争成功的阻碍。我们的研究需要进行实验，比较北美本土草原植物与它们在恢复项目中竞争的非本土物种的表现。我们提出，一个植物种群的整体竞争能力，如本土草大蓝茎，是生物过程等级制度的最终结果，从种子萌发到死亡。在我们的研究中，我们将开发这些物种在肥沃或贫瘠土壤条件下的长期种群动态的计算机模型。通过将模型预测与草原恢复的结果进行比较，我们将检验目前关于植物之间资源利用差异的理论，以及这些差异对恢复生态系统最终物种构成的影响。我们将在马里恩的俄亥俄州立大学进行实地考察，这是一个小型的区域性校园，主要服务于农业社区。我们与一所地区高中建立了科学教育合作伙伴关系，开展实地练习，学生将与项目科学家一起收集数据。