Collaborative Research: Interacting Disturbances: leaf to landscape dynamics of emerging disease, fire and drought in California coastal forests

合作研究：相互作用的干扰：加州沿海森林中新出现的疾病、火灾和干旱的叶子到景观动态

基本信息

批准号：
1430134
负责人：
Ross Meentemeyer
金额：
$ 64.74万
依托单位：
North Carolina State University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2013
资助国家：
美国
起止时间：
2013-11-22 至 2016-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1430134&HistoricalAwards=false
关键词：
Collaborative Research Interacting Disturbances leaf

项目摘要

Over the past decade, millions of trees in California and Oregon forests have been attacked by an exotic pathogen, Phytophthora ramorum, causal agent of the infectious forest disease known as sudden oak death. This destructive outbreak is occurring in redwood and oak woodland communities in the same places that have also recently experienced devastating wildfires and extreme droughts. This research will use a novel combination of molecular, greenhouse, field, and computational modeling techniques to understand how disturbances created by wildfire, drought, and infectious disease interact and impact forest ecosystems. Results are expected to illuminate how wildfire affects the persistence and spread of an invasive pathogen, how biodiversity impacts emergence of disease in disturbed vs. undisturbed plant communities, and how these interacting disturbances alter nutrient cycling in forest ecosystems. The combined research on the ecology of infectious disease, wildfire and drought will help develop best management practices for the growing number of forested landscapes around the world that are being impacted by complex, interacting disturbances. Outreach to stakeholders will be implemented through two highly effective organizations - University of California Cooperative Extension and the California Oak Mortality Task Force. The investigators will also be actively involved with advising state, federal and International regulatory committees put in place to create policy for managing sudden oak death and other forest diseases.

在过去的十年中，加利福尼亚州和俄勒冈森林的数百万棵树遭到了异国情调的病原体，植物疫霉菌（Phytophthora ramorum），这是传染性森林疾病的因果剂，称为突然的橡树死亡。这种破坏性的爆发发生在红木和橡树林社区，最近也经历了毁灭性的野火和极端干旱的地方。这项研究将使用分子，温室，田间和计算建模技术的新型组合来了解野火，干旱和传染病造成的干扰如何相互作用并影响森林生态系统。预计结果将阐明野火如何影响侵入性致病机构的持久性和传播，生物多样性如何影响受干扰与未受干扰的植物群落中疾病的出现以及这些相互作用的干扰如何改变森林生态系统中的养分循环。关于传染病，野火和干旱生态学的合并研究将有助于开发最佳的管理实践，以为世界上越来越多的森林景观受到复杂，相互作用的干扰影响。将通过两个高效的组织 - 加利福尼亚大学合作扩展和加利福尼亚橡木死亡率工作组来实施与利益相关者的宣传。调查人员还将积极参与为州，联邦和国际监管委员会提供建议，以制定管理橡木猝死和其他森林疾病的政策。