Ocean Acidification: Collaborative Research: Interactive effects of acidification, low dissolved oxygen and temperature on abalone population dynamics within the California Current

海洋酸化：合作研究：酸化、低溶解氧和温度对加州洋流鲍鱼种群动态的相互作用

• 批准号: 1416837
• 负责人: Clifton Woodson
• 金额: $ 18.49万
• 依托单位: University of Georgia Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-07-15 至 2018-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1416837&HistoricalAwards=false
• 关键词: Ocean; Acidification; Collaborative; Research; Interactive

Ocean acidification is increasingly recognized as a significant driver of change in marine ecosystems. In particular, ecosystems in eastern boundary current systems, including the California Current Large Marine Ecosystem (CCLME), routinely experience upwelling driven low pH, low dissolved oxygen (DO) waters in shallow near shore habitats, and these occurrences have been increasing in magnitude and duration over the past decade. The goal of this project is to study the consequences of ocean acidification and other climate-related changes (dissolved oxygen(DO), temperature) in oceanographic conditions on near shore marine communities over a large scale oceanographic gradient in the CCLME. Understanding how the effects of ocean acidification combined with other climate-related changes on individual marine organisms or life stages will cascade to populations and the services they provide is a high priority for science, management, and policy. By integrating the results of oceanographic field measurements and laboratory experiments in a demographic and bio-economic modeling framework, the present project will advance our understanding of the role of oceanographic variability on the dynamics of marine populations and fisheries. In particular, this research will provide key insights regarding the interactive influences of simultaneous changes in pH, DO, and temperature on nearshore populations and fisheries. By investigating the effects of multiple stressors on coastal marine ecosystems, the project will allow us to better anticipate possible ecological and fishery impacts of increasing frequency and/or intensity of low pH and low DO events. A deeper understanding of the linkages among ocean acidification, coastal oceanographic processes and the health of nearshore marine ecosystems in the CCLME will inform adaptation strategies for future ocean conditions. The project will also train high-school, undergraduate and graduate students, and early-career fellows in basic and applied research on ocean acidification.The research program will implement a novel individual- to population-level approach to specifically investigate how the direct effects of ocean acidification, alone or in combination with low DO and temperature, on two model species of great ecological and commercial relevance, red and pink abalone, will manifest at the population level, and ultimately, the services these species provide to humans. Researchers will: 1) measure and characterize the temporal variability of pH, DO and temperature in nearshore abalone habitat in Monterey Bay, Central California, and Isla Natividad, Mexico, particularly in relation to the duration and intensity of extreme low pH, low DO events, under alternative scenarios of future climate change, 2) conduct laboratory experiments to investigate the effects of low pH, low DO conditions on the reproductive success, growth, calcification, and survival of juvenile red and pink abalone, and 3) develop demographic and bio-economic models to estimate the impacts of environmental and local anthropogenic stressors on the resilience of abalone populations and to assess what management and conservation strategies, including the implementation of networks of marine reserves, may contribute to buffering the negative effects of increased frequency and/or intensity of low pH and low DO events expected under near-future climate scenarios.

海洋酸化越来越被认为是海洋生态系统变化的重要驱动力。特别是，包括加利福尼亚当前大型海洋生态系统（CCLME）在内的东部边界电流系统中的生态系统通常会经常体验到上升驱动的低pH值，低溶解的氧气（DO）水域附近的浅水区域，并且在过去十年中，这些事件的幅度和持续时间都在增加。该项目的目的是研究海洋酸化和其他与气候相关的变化（溶解的氧（DO），温度）在CCLME大规模海洋学梯度上的海洋学条件下的海洋学条件下的后果。了解海洋酸化的影响与其他与气候相关的变化对单个海洋生物或生命阶段的影响将级联到人口及其提供的服务是科学，管理和政策的重中之重。通过将海洋现场测量结果和实验室实验的结果整合在人群和生物经济建模框架中，本项目将促进我们对海洋变异性在海洋种群和渔业动态的作用的理解。特别是，这项研究将提供有关pH，DO和温度对近岸种群和渔业的同时变化的互动影响的关键见解。通过调查多种压力源对沿海海洋生态系统的影响，该项目将使我们能够更好地预期低pH值和低DO事件的频率和/或强度增加的生态和渔业影响。对CCLME中海洋酸化，沿海海洋学过程和近岸海洋生态系统的健康之间的联系有更深入的了解将为未来海洋状况提供适应策略。该项目还将培训高中，本科生和研究生，以及在海洋酸化的基本和应用研究中的早期研究生。该研究计划将实施一种新颖的个人至人群级别的方法，以专门研究海洋酸化的直接影响，单独或与低do和温度结合的水平和温度结合在两个模型的生态和商业相关性的物种上，将其提供给人以上和粉红色的级别，并将其级别提供，并将这些人类提供，并将这些人类的级别提供，并将这些级别的人类分别为这些人群，并将这些人类列为这些人群。研究人员将：1）衡量和表征在蒙特雷湾，加利福尼亚州中部和墨西哥的伊斯拉·纳塔维达德（Isla Natividad）的近岸鲍鱼栖息地的时间变化和温度的时间变化，尤其是在极端低pH值的持续时间和强度相关的情况下，低pH值的持续时间和强度，在未来的气候变化下，在pH值下进行替代的pH值，2）少年红和粉红色鲍鱼的存活以及3）开发人口统计学和生物经济模型，以估计环境和当地人为压力源对鲍鱼人群的弹性的影响，以评估在频率和pH值下降频率下的负面影响下的负面影响，并有助于降低pH值的负面影响。