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CAREER: Predicting ecosystem metabolism of rocky intertidal communities in warming and acidifying oceans.

职业：预测海洋变暖和酸化中岩石潮间带群落的生态系统代谢。

基本信息

批准号：
2044837
负责人：
Nyssa Silbiger
金额：
$ 79.95万
依托单位：
The University Corporation, Northridge
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2021
资助国家：
美国
起止时间：
2021-08-15 至 2026-07-31
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2044837&HistoricalAwards=false
关键词：
CAREER Predicting ecosystem metabolism rocky

项目摘要

This award is funded in whole or in part under the American Rescue Plan Act of 2021 (Public Law 117-2). The devastating impacts of global warming and ocean acidification (OA) on rocky intertidal ecosystems are expected to increase as the oceans continue to warm and acidify. Further, loss of critical foundation species as a result of anthropogenic stressors lead to changes in local conditions that alter ecosystem functioning. While data exist on the physiological response of individual organisms to OA and warming in rocky systems, far less research has been conducted on community and ecosystem-scale metabolic responses. The proposed work provides a critical step in understanding how altered environmental conditions affect ecosystem functioning in rocky intertidal systems through the combination of controlled laboratory studies, field experiments, and a synthetic modeling approach integrating experimental results with pre-existing time-series data. The proposed work is focused on the overarching question: How does shifting environmental variability and loss of foundation species interact to affect ecosystem functioning in rocky intertidal communities? The PI is integrating research with ecological and quantitative educational opportunities including classroom and hands-on training in lab/field methods in marine ecology, and data science and coding bootcamps for undergraduate students. Importantly, these opportunities financially and educationally support traditionally underrepresented students at one of the largest minority-serving institutions in the country. This project provides support for intensive mentoring and training for 35 undergraduate students (25 in data science and 10 in field/lab science, all paid), 2-3 masters students, and hands-on marine ecology opportunities in the classroom (~125 students). In addition to formal education, the PI is collaborating with an artist-in-residence to communicate science to the broader public through interactive and immersive art installations in Los Angeles.Because rocky intertidal systems provide important ecosystem services including food production, coastal protection, and tourism, it is critical to understand how warming (both air and ocean), acidification, and altered community states affect reef-scale ecosystem metabolism. While information exists on responses of a variety of individual intertidal taxa to temperature stress, ocean acidification, and habitat loss, there is notably less on the response of ecosystem metabolism (e.g. NEP and NEC) to these stressors. This proposed work is focused on a series of conceptual knowledge gaps and tests mechanisms through which different warming regimes, lowered pH, and community disturbance lead to altered community metabolism and ultimately affect ecosystem function. Specifically, this study: 1) Describes community thermal performance curves of multiple ecosystem functions under differing pH conditions in experimental mesocosms, 2) characterizes drivers of ecosystem functioning (e.g. Net Ecosystem Production [NEP] and Net Ecosystem Calcification [NEC]) in situ using natural changes in environmental variability before and after a disturbance, and 3) integrates 16 years of publicly available community composition and environmental time-series data with lab and field data to hindcast ecosystem metabolic rates and predict how ecosystem metabolism may change in the future.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.

该奖项全部或部分根据2021年美国救援计划法案（公法117-2）资助。随着海洋继续变暖和酸化，全球变暖和海洋酸化对岩石潮间带生态系统的破坏性影响预计将增加。此外，由于人为压力造成的关键基础物种的丧失导致当地条件的变化，从而改变生态系统的功能。虽然数据存在于岩石系统中的生物个体对OA和变暖的生理反应，但对社区和生态系统规模的代谢反应的研究却少得多。拟议的工作提供了一个关键的一步，了解如何改变环境条件影响生态系统功能的岩石潮间带系统，通过控制实验室研究，现场实验和综合建模方法相结合，将实验结果与预先存在的时间序列数据。拟议的工作集中在首要的问题：如何改变环境的变化和基础物种的损失相互作用，影响生态系统功能的岩石潮间带社区？PI将研究与生态和定量教育机会相结合，包括海洋生态学实验室/现场方法的课堂和实践培训，以及本科生的数据科学和编码训练营。重要的是，这些机会在财政和教育上支持传统上代表性不足的学生在该国最大的少数民族服务机构之一。该项目为35名本科生（25名数据科学和10名现场/实验室科学，全部付费），2-3名硕士生提供密集的指导和培训支持，并在课堂上实践海洋生态学机会（约125名学生）。除了正规教育，PI还与一位驻场艺术家合作，通过洛杉矶的互动和沉浸式艺术装置向更广泛的公众传播科学。由于岩石潮间带系统提供重要的生态系统服务，包括粮食生产、海岸保护和旅游业，因此了解气候变暖是如何影响生态系统的至关重要。（包括空气和海洋）、酸化和改变的群落状态影响到珊瑚礁规模的生态系统新陈代谢。虽然存在的各种个别潮间带类群的温度应力，海洋酸化和栖息地丧失的反应的信息，有显着较少的生态系统代谢（如NEP和NEC）对这些压力的反应。这项工作的重点是一系列的概念知识差距和测试机制，通过不同的变暖制度，降低pH值，和社区干扰导致改变社区代谢，并最终影响生态系统功能。具体而言，本研究：1）描述了实验性围隔生态系统在不同pH条件下多种生态系统功能的群落热性能曲线，2）表征了生态系统功能的驱动因素（例如净生态系统生产力[NEP]和净生态系统钙化[NEC]），利用扰动前后环境变化的自然变化，和3）整合了16年的公开可用的社区组成和环境时间-一系列实验室和现场数据，以后报生态系统代谢率，并预测生态系统代谢在未来可能发生的变化。基金会的使命是履行其使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评价，被认为值得支持。