Dimensions: Collaborative Research: Anthropogenic nutrient input drives genetic, functional and taxonomic biodiversity in hypereutrophic Lake Taihu, China

维度：合作研究：人为养分输入驱动中国超富营养化太湖的遗传、功能和分类生物多样性

• 批准号: 1240851
• 负责人: Hans Paerl
• 金额: $ 54.52万
• 依托单位: University of North Carolina at Chapel Hill
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1240851&HistoricalAwards=false
• 关键词: Dimensions; Collaborative; Research; Anthropogenic; nutrient

Human activities have dramatically increased nitrogen inputs into many rivers and lakes, causing algal blooms that threaten economic and recreational uses of those waters. Lake Taihu, the third largest lake in China, experiences damaging blooms of toxic cyanobacteria as a result of excessive nutrient inputs. The identities, nitrogen processing capabilities, and activities of microbial communities in Lake Taihu will be examined to determine if nitrogen processing can be predicted from knowledge of the identity and genetic makeup of those communities. Various components of the nitrogen cycle will be measured and linked to representative molecular markers which, coupled with high throughput genetic sequencing, will provide a genetic database of nitrogen-cycling processes in freshwater ecosystems. A goal of the project will be to link microbial taxonomic, genetic, and functional data in a model that can predict how reduction of nutrient inputs will affect toxic cyanobacterial blooms.This project will have broad applicability to the management of aquatic systems that are threatened by excessive nutrient inputs, a problem that is increasing worldwide. Additional broader impacts will include training of high school, undergraduate, and graduate students, international student exchanges, training of a postdoctoral researcher, and incorporation of science journalism students into field studies to promote adult scientific literacy.

人类的活动大大增加了许多河流和湖泊的氮输入，导致藻华威胁到这些水域的经济和娱乐用途。台湾湖是中国第三大湖泊，由于养分过多而导致有毒的蓝细菌造成破坏的鲜花。将检查台湾湖中微生物群落的身份，氮加工能力以及活动，以确定是否可以从了解这些社区的身份和基因组成的知识中预测氮加工。将测量氮循环的各个组成部分，并将其与代表性的分子标记相关联，该标记与高吞吐量遗传测序相结合，将提供淡水生态系统中氮气循环过程的遗传数据库。该项目的目标是将微生物分类学，遗传和功能数据链接在一个模型中，该模型可以预测营养输入的减少将如何影响有毒的蓝细菌膨胀。该项目将广泛适用于受到过多养分投入的水生系统的管理，这会增加全球范围。其他更广泛的影响将包括对高中，本科生和研究生的培训，国际学生交流，对博士后研究员的培训以及将科学新闻学生纳入现场研究，以促进成人科学素养。

项目成果

Storm and floods increase the duration and extent of phosphorus limitation on algal blooms in a tributary of the Three Gorges Reservoir, China

• DOI: 10.1016/j.jhydrol.2022.127562
• 发表时间: 2022-02
• 期刊: Journal of Hydrology
• 影响因子: 6.4
• 作者: Yiping Li;Yanan Huang;Daobin Ji;Y. Cheng;A. S. Nwankwegu;H. Paerl;Chunyan Tang;Zheng-jian Yang

The global Microcystis interactome

• DOI: 10.1002/lno.11361
• 发表时间: 2019-11-19
• 期刊: LIMNOLOGY AND OCEANOGRAPHY
• 影响因子: 4.5
• 作者: Cook, Katherine, V;Li, Chuang;Zhu, Guangwei
• 通讯作者: Zhu, Guangwei

Cyanophycin accumulated under nitrogen-fluctuating and high-nitrogen conditions facilitates the persistent dominance and blooms of Raphidiopsis raciborskii in tropical waters

• DOI: 10.1016/j.watres.2022.118215
• 发表时间: 2022-02-25
• 期刊: WATER RESEARCH
• 影响因子: 12.8
• 作者: Lu, Zhe;Ye, Jinmei;Paerl, Hans W.
• 通讯作者: Paerl, Hans W.

Feedback between climate change and eutrophication: revisiting the allied attack concept and how to strike back

• DOI: 10.1080/20442041.2022.2029317
• 发表时间: 2022-04-08
• 期刊: INLAND WATERS
• 影响因子: 3.1
• 作者: Meerhoff, Mariana;Audet, Joachim;Jeppesen, Erik
• 通讯作者: Jeppesen, Erik