RAPID Collaborative Research: Short-term colonization processes at Costa Rica methane seeps

RAPID 合作研究：哥斯达黎加甲烷渗漏的短期定植过程

• 批准号: 0939557
• 负责人: Lisa Levin
• 金额: $ 6万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2010-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0939557&HistoricalAwards=false
• 关键词: RAPID; Collaborative; Research; Short; term

This RAPID project will conduct 5 submersible or ROV dives to collect a series of colonization experiments deployed in March 2009 on Mound 12 off Costa Rica (997 m). These experiments were deployed opportunistically, and to optimize the information that could be obtained, the PIs needed to recover them within a 12 month time frame. Early colonization of rock, wood, shell and tube substrates will be studied. The microbes, foraminiferans and metazoans present after 6-12 mo will be compared to those colonizing similar experiments to be deployed at Hydrate Ridge, where seeps occur within an oxygen minimum zone. The overall project goal is to integrate physical, geological, chemical and biological data to develop a holistic view of the influence of seep-generated carbonate hard-ground ecosystems on margins.The objectives of the research are to (a) Compare colonizers at seeps off Costa Rica and Hydrate Ridge to assess the importance of different oxygen regimes in the development of anaerobic methane oxidation, sulfide oxiders and other microbial metabolisms on hard substrates, and to evaluate their roles in driving protozoan and metazoan succession at methane seeps. (b) Deploy a suite of biotic and abiotic substrates to distinguish the specific roles of carbonate substrate from those of other hard substrates (wood, clam and mussel shells, worm tubes) available. (c) Explore the similarity of vent and seep colonization processes by comparing colonization at the Costa Rica seeps, where vent species are common, to the Hydrate Ridge seeps, where they are not. (d) Determine whether there are diagnosable biogeographic isotope or other biomarker signatures from newly recruited Costa Rica microbial, foraminiferal and animal populations at active vs. inactive seeps, and whether these differ from those at Hydrate Ridge.This research will involve international participation from Costa Rican scientists at the Univ. of Costa Rica. The collections will provide material for summer research projects by diversity students. In conjunction with results from the parent project, the research will be disseminated in coursework at 3 teaching institutions. Additional broader impacts include community outreach (local school presentations; web site development) and interdisciplinary, hands-on training of several future scientists, including underrepresented groups (women; first-generation university graduate and undergraduate students from rural communities).

该 RAPID 项目将进行 5 次潜水器或 ROV 潜水，以收集 2009 年 3 月在哥斯达黎加附近的 Mound 12 (997 m) 部署的一系列殖民实验。这些实验是随机部署的，为了优化可以获得的信息，PI 需要在 12 个月的时间范围内恢复它们。将研究岩石、木材、贝壳和管状基质的早期定殖。 6-12 个月后出现的微生物、有孔虫和后生动物将与在水合物岭部署的类似实验中的定殖微生物、有孔虫和后生动物进行比较，其中渗漏发生在氧气最低区域内。项目的总体目标是整合物理、地质、化学和生物数据，以全面了解渗流产生的碳酸盐硬地生态系统对边缘的影响。研究的目标是 (a) 比较渗流处的殖民者哥斯达黎加和 Hydrate Ridge 评估不同氧状态在厌氧甲烷氧化、硫化物氧化物和其他硬基质上微生物代谢发展中的重要性，并评估它们在驱动原生动物和甲烷渗漏处的后生动物演替。 (b) 部署一套生物和非生物基质，以区分碳酸盐基质与其他可用硬质基质（木材、蛤壳和贻贝壳、蠕虫管）的具体作用。 (c) 通过比较哥斯达黎加渗漏处（喷口物种常见）和水合物岭渗漏（喷口物种不常见）的定殖，探索喷口和渗漏定植过程的相似性。 (d) 确定活跃和不活跃渗漏处新招募的哥斯达黎加微生物、有孔虫和动物种群中是否存在可诊断的生物地理同位素或其他生物标志物特征，以及这些特征是否与水合物岭的不同。这项研究将涉及哥斯达黎加的国际参与大学的黎加科学家。哥斯达黎加。这些藏品将为多元化学生的夏季研究项目提供材料。结合母项目的结果，该研究将在 3 个教学机构的课程作业中传播。其他更广泛的影响包括社区外展（当地学校演示；网站开发）以及对几位未来科学家的跨学科实践培训，包括代表性不足的群体（妇女；来自农村社区的第一代大学研究生和本科生）。