The Holocene and Anthropocene as windows into the future of marine systems

全新世和人类世是了解海洋系统未来的窗口

• 批准号: 1832828
• 负责人: Peter Roopnarine
• 金额: $ 12.02万
• 依托单位: California Academy of Sciences
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-01 至 2022-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1832828&HistoricalAwards=false
• 关键词: Holocene; Anthropocene; windows; into; future

Paleoceanographic records provide a unique opportunity to understand how ecosystems have responded to rapid environmental change in the past, a topic of significant societal and scientific interest. This project will document ecological changes in nearshore environments over the past several thousand years in Southern California, including investigation of impacts of both past and modern climate change. This work is of particular importance because these coastal ecosystems play critical roles in carbon sequestration, marine fisheries, coastal economies, and cycling of nutrients. As part of an integrated effort, the California Academy of Sciences (CAS) will catalog, digitize and identify fossil samples collected along the California margin. These materials will be combined with samples from available sediment cores to develop a public online digital database through which the research community may access project data and results. Two graduate students per year from the University of California Davis (UCD) will work closely with CAS staff to receive training in core curation and database development. In addition, this project supports the training of two Ph.D. students, and undergraduate research interns at UC Davis and UC Santa Barbara. The project also supports intensive field and laboratory based coursework and mentored research at Bodega Marine Laboratory for two undergraduates per year who are pursuing careers in K-12 STEM teaching. A research blog will be generated to develop scientific communication and writing skills in undergraduate, graduate students and technicians involved in this project. To complete this research, the research team will use sediment records from along the California margin to address two key questions: 1) How did the development of the modern oxygen minimum zone during the Holocene influence marine ecosystems, including multiple stages of perturbation and recovery? 2) Can we identify the marine ecological impacts of the Anthropocene, against a background of decadal-centennial scale variability? The team will utilize recent marine sediments to reconstruct marine microfossil response to both natural and anthropogenic environmental perturbation. This research will utilize a suite of available sedimentary archives (over 20 piston, box and multi cores), with moderately high sedimentation rates and available geochemical records, to identify and interpret metazoan and protistan assemblages. Microfossil assemblages will provide a framework to understand past, modern and future climate and oceanographic processes along the California margin. These results can be directly compared to modern instrumental records, and utilized to better predict future impacts of environmental change in this region.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.

古海洋记录提供了一个独特的机会来了解生态系统如何应对过去快速的环境变化，这是一个具有重大社会和科学意义的话题。 该项目将记录南加州过去几千年来近岸环境的生态变化，包括调查过去和现代气候变化的影响。这项工作特别重要，因为这些沿海生态系统在碳固存、海洋渔业、沿海经济和养分循环中发挥着关键作用。作为综合努力的一部分，加州科学院 (CAS) 将对沿加州边缘收集的化石样本进行编目、数字化和识别。这些材料将与现有沉积物岩心的样本相结合，开发一个公共在线数字数据库，研究界可以通过该数据库获取项目数据和结果。加州大学戴维斯分校 (UCD) 每年有两名研究生将与 CAS 工作人员密切合作，接受核心管理和数据库开发方面的培训。此外，该项目还支持培养两名博士生。加州大学戴维斯分校和加州大学圣巴巴拉分校的学生和本科生研究实习生。该项目还支持 Bodega 海洋实验室每年为两名追求 K-12 STEM 教学职业的本科生提供基于现场和实验室的密集课程作业和指导研究。将生成一个研究博客，以培养参与该项目的本科生、研究生和技术人员的科学沟通和写作技能。为了完成这项研究，研究小组将利用加州边缘的沉积物记录来解决两个关键问题：1）全新世期间现代最低含氧区的发展如何影响海洋生态系统，包括多个阶段的扰动和恢复？ 2）我们能否在十年至百年尺度变化的背景下确定人类世对海洋生态的影响？该团队将利用最近的海洋沉积物来重建海洋微化石对自然和人为环境扰动的响应。这项研究将利用一套可用的沉积档案（超过 20 个活塞、箱式和多岩芯），具有较高的沉积速率和可用的地球化学记录，来识别和解释后生动物和原生动物组合。微化石组合将为了解加州边缘过去、现代和未来的气候和海洋过程提供一个框架。这些结果可以直接与现代仪器记录进行比较，并用于更好地预测该地区环境变化的未来影响。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Ecological and Environmental Stability in Offshore Southern California Marine Basins Through the Holocene

全新世南加州近海海洋盆地的生态和环境稳定性

• DOI: 10.1029/2021pa004373
• 发表时间: 2022
• 期刊: Paleoceanography and Paleoclimatology
• 影响因子: 3.5
• 作者: Palmer, Hannah M.;Hill, Tessa M.;Kennedy, Esther G.;Roopnarine, Peter D.;Langlois, Sonali;Reyes, Katherine R.;Stott, Lowell D.
• 通讯作者: Stott, Lowell D.

Southern California margin benthic foraminiferal assemblages record recent centennial-scale changes in oxygen minimum zone

南加州边缘底栖有孔虫组合记录了最低氧气区最近百年规模的变化

• DOI: 10.5194/bg-17-2923-2020
• 发表时间: 2020
• 期刊: Biogeosciences
• 影响因子: 4.9
• 作者: Palmer, Hannah M.;Hill, Tessa M.;Roopnarine, Peter D.;Myhre, Sarah E.;Reyes, Katherine R.;Donnenfield, Jonas T.
• 通讯作者: Donnenfield, Jonas T.