Collaborative Research: Network Cluster: Geomicrobiology and Biogeochemistry in the Critical Zone

合作研究：网络集群：关键区域的地球微生物学和生物地球化学

• 批准号: 2012403
• 负责人: William McDowell
• 金额: $ 23.65万
• 依托单位: University of New Hampshire
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-09-01 至 2022-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2012403&HistoricalAwards=false
• 关键词: Collaborative; Research; Network; Cluster; Geomicrobiology

The critical zone is the active upper crust of the Earth, from the lowest groundwater to the top of the highest tree. Critical Zone science is at an important juncture: it is incorporating life in more quantitative ways. This project will evaluate the contribution of the microorganisms that drive so many of the dynamics of the Critical Zone, addressing crucial gaps in our knowledge of surface and deep soil microbes and their functions. The major goal of this research is to develop a predictive understanding of the role of microbes as drivers of Critical Zone biogeochemistry and soil formation. The researchers’ preliminary investigations across the former Critical Zone Observatory Network identified variable patterns in microbial biodiversity with increasing soil depth across sites, with some sites showing little to no change with depth, and others a complete turnover of the microbial community members. The current project will illuminate the mechanisms underlying these trends. This project will train numerous undergraduate students, most of whom will be underrepresented minorities at several Hispanic Serving Institutions (HSIs) and high schools in underserved communities across California. Results will be disseminated to the greater public through a series of webinars that will provide real life examples of how to address Critical Zone science questions by leveraging diverse scientific backgrounds, as well as through incorporation into the “Welcome to the Critical Zone” public museum exhibit at The University of Arizona’s Flandrau Science Center.This project will address the hypothesis that soil type, hydrology, and lithology are key determinants of the depth to which surface influences such as vegetation and climate drive microbial community composition, diversity, and activity. Specifically, where soils are deep or are derived from nutrient- rich bedrock, the researchers hypothesize that rooting depths will be greater, resulting in a greater similarity between surface and deep soil microbial communities compared to those from shallower soils or those developed from less nutrient-rich substrates. In this proposed project, the researchers will use a novel combination of DNA and RNA sequencing, real-time soil gas and environmental monitoring, quantified enzyme activities, detailed soil organic matter and isotopic analyses, as well as root abundances to address the hypothesis. To amplify the impact of this approach, the project will develop a unique and detailed geomicrobiology characterization of key indicator species of bacteria, archaea and fungi, grouped to distinguish those that are surface-based and those representative of bedrock interactions. This novel framework will be tested across years and will generate a resource for the larger NSF Geoscience community for years to come. This project will also form an important interdisciplinary aspect of the new Critical Zone Collaborative Network, through collaborations with various other Clusters and the Hub. This award is co-funded by the Critical Zone Collaborative Network of the Division of Earth Sciences and the Ecosystem Sciences cluster of the Division of Environmental Biology.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

临界区是对最高树的最低地下水的活性鞋面。这是对微生物的驱动因素和土壤形成，其中大多数将通过一系列关于如何解决关键的科学背景以及一系列意愿的生活例子，将七分之一的少数民族（HSIS）和高中社区交叉。批评区“亚利桑那州的弗兰德劳科学中心。这是h的假设，表面对植物和气候微生物群落组成，多样性。油是深层或源自营养丰富的基岩，研究人员，ur骨和深层土壤轻度的缩减的土壤，对于较浅的土壤或较少养分的底物开发的人。为了解决这种方法的脱节，该项目将开发出详细的地球生物学特征，这是fuungi的关键指标，这个新颖的框架Willk Willk Willk在多年来都会为较大的NSF社区生成一年。 ，通过与其他群集和集线器的合作。 。

项目成果

Hydrological Mapping in the Luquillo Experimental Forest: New Local Datum Improves Watershed Ecological Knowledge

卢基约实验森林的水文测绘：新的当地数据提高了流域生态知识

• DOI: 10.3390/hydrology8010054
• 发表时间: 2021
• 期刊: Hydrology
• 影响因子: 3.2
• 作者: Leon, Miguel C.;Heartsill-Scalley, Tamara;Santiago, Iván;McDowell, William H.
• 通讯作者: McDowell, William H.

Landslides, hurricanes, and sediment sourcing impact basin-scale erosion estimates in Luquillo, Puerto Rico

• DOI: 10.1016/j.epsl.2021.116821
• 发表时间: 2021-03-08
• 期刊: EARTH AND PLANETARY SCIENCE LETTERS
• 影响因子: 5.3
• 作者: Grande, Alexandra;Schmidt, Amanda H.;Caffee, Marc W.
• 通讯作者: Caffee, Marc W.