Facilitating the tropical forest carbon sink: The evolution and function of symbiotic N2 fixation

促进热带森林碳汇：共生固氮的演变和功能

• 批准号: NE/M019497/1
• 负责人: Sarah Batterman
• 金额: $ 62.34万
• 依托单位: University of Leeds
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FM019497%2F1
• 关键词: Facilitating; tropical; forest; carbon; sink

Trees with the ability to access nitrogen fertilizer from the atmosphere (N2 fixers) fill a critical role in supporting tropical forest growth and carbon storage and may become increasingly important as climate changes. Whether N2 fixers will help tropical forests store additional CO2 in the future-thereby offsetting human CO2 emissions-may depend on what controls their function and evolution in ecosystems. To better understand the future role of fixers as climate changes, we can learn by examining how fixers responded to major past global change, deducing why fixers evolved and what factors caused their diversification and spread across forests and other ecosystems. I will address this previously-unposed question using a combination of approaches: 1) establishing a large-scale, long-term fertilization experiment in Panamanian tropical forests to test how nutrients limit forest recovery from disturbance and the ability of N2-fixing trees to facilitate carbon storage; 2) utilizing the largest dataset of fixer prevalence and biodiversity across the Amazon Basin to analyze how nutrients control fixers; 3) combining a recent reconstruction of the evolutionary history (phylogeny) of fixers with a dataset of fixer prevalence and biodiversity across tropical regions globally to determine how nutrients govern the evolution and geographical spread of fixers; and, 4) pairing the fixer phylogeny with a review of ancient geological and climatic events to determine what precipitated the major evolutionary events that led to the modern-day distribution of fixers. This approach is expected to lead a new understanding of the function of fixers throughout earth's history and a better ability to predict how their role may change into the future. New findings will inform policy-makers and the public about the reliability of tropical forests to buffer our CO2 emissions, scientists about the importance of biodiversity and plant function, and practitioners about how to protect and restore ecosystems.

具有从大气中获取氮肥能力的树木（N2固定剂）在支持热带森林生长和碳储存方面发挥着关键作用，随着气候变化可能变得越来越重要。N2固定器是否会帮助热带森林在未来储存更多的CO2，从而抵消人类的CO2排放，可能取决于是什么控制着它们在生态系统中的功能和进化。为了更好地了解固定者在气候变化中的未来作用，我们可以通过研究固定者如何应对过去的重大全球变化来学习，推断为什么固定者进化，以及什么因素导致他们在森林和其他生态系统中的多样化和传播。我将使用以下方法来解决这个以前未提出的问题：1）在巴拿马热带森林中建立一个大规模的长期施肥实验，以测试营养物质如何限制森林从干扰中恢复以及固氮树木促进碳储存的能力; 2）利用亚马逊流域最大的固定剂流行率和生物多样性数据集来分析营养物质如何控制固定剂; 3）结合最近重建的进化史，利用全球热带地区固定剂流行率和生物多样性数据集，确定营养物质如何控制固定剂的进化和地理扩散;并且，在本发明中，4）将固定器的起源与古代地质和气候事件的回顾配对，以确定是什么促成了导致现代的主要进化事件-固定器的日分配。这种方法有望引导人们对固定器在整个地球历史中的功能有一个新的理解，并更好地预测它们的作用在未来会如何变化。新发现将告知政策制定者和公众热带森林缓冲二氧化碳排放的可靠性，科学家关于生物多样性和植物功能的重要性，以及从业人员如何保护和恢复生态系统。

项目成果

Plant communities and food webs

植物群落和食物网

• DOI: 10.3389/fevo.2023.1253084
• 发表时间: 2023
• 期刊: Frontiers in Ecology and Evolution
• 影响因子: 3
• 作者: Dobson A

Widespread herbivory cost in tropical nitrogen-fixing tree species

• DOI: 10.1038/s41586-022-05502-6
• 发表时间: 2022-12-07
• 期刊: NATURE
• 影响因子: 64.8
• 作者: Barker, Will;Comita, Liza S. S.;Batterman, Sarah A. A.
• 通讯作者: Batterman, Sarah A. A.

Nitrogen and phosphorus availability alters tree-grass competition intensity in savannas

氮和磷的有效性改变了稀树草原的树草竞争强度

• DOI: 10.1111/1365-2745.14284
• 发表时间: 2024
• 期刊: Journal of Ecology
• 影响因子: 5.5
• 作者: Biro A

Tradeoffs and Synergies in Tropical Forest Root Traits and Dynamics for Nutrient and Water Acquisition: Field and Modeling Advances

• DOI: 10.3389/ffgc.2021.704469
• 发表时间: 2021-12
• 作者: D. Cusack;S. Addo-Danso;E. Agee;K. Andersen;M. Arnaud;S. Batterman;F. Brearley;Mark Ciochina;A. Cordeiro;C. Dallstream;Milton H. Díaz‐Toribio;Lee H. Dietterich;J. Fisher;K. Fleischer;Claire Fortunel;Lucia Fuchslueger;Nathaly R. Guerrero‐Ramírez;M. Kotowska;L. F. Lugli;C. Marín;L. A. McCulloch;J. Maeght;D. Metcalfe;R. Norby;R. Oliveira;J. Powers;Tatiana Reichert;Stuart W. Smith;Chris M. Smith‐Martin;F. Soper;Laura Toro;M. Umaña;O. Valverde‐Barrantes;M. Weemstra;Leland K. Werden;M. Wong;Cynthia L Wright;S. Wright;Daniela Yaffar

Legume-microbiome interactions unlock mineral nutrients in regrowing tropical forests.

• DOI: 10.1073/pnas.2022241118
• 发表时间: 2021-03-16
• 期刊: Proceedings of the National Academy of Sciences of the United States of America
• 影响因子: 11.1
• 作者: Epihov DZ;Saltonstall K;Batterman SA;Hedin LO;Hall JS;van Breugel M;Leake JR;Beerling DJ
• 通讯作者: Beerling DJ