OCEAN ACIDIFICATION - COLLABORATIVE RESEARCH: OMEGAS II - Linking ecological and organismal responses to the ocean acidification seascape in the California Current System

海洋酸化 - 合作研究：OMEGAS II - 将生态和生物反应与加州洋流系统中海洋酸化海景联系起来

• 批准号: 1220648
• 负责人: Eric Sanford
• 金额: $ 27.94万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-10-01 至 2014-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1220648&HistoricalAwards=false
• 关键词: OCEAN; ACIDIFICATION; COLLABORATIVE; RESEARCH; OMEGAS

This project is a renewal of an existing ocean acidification (OA) grant supporting an interdisciplinary research team (called OMEGAS) with expertise in oceanography, ecology, biogeochemistry, molecular physiology, and molecular genetics. Research to date has documented a dynamic oceanographic mosaic in the inner shelf of the California Current System (CCS) that spans 1,200+ km and varies at tidal, diurnal, event, and seasonal temporal scales at local to ocean basin spatial scales. In OMEGAS II, the project seeks to better understand the drivers of this striking time-space variability, and to link the OA seascape to the physiological and ecological performance of a key member of this ecosystem, the mussel Mytilus californianus. In addition, the investigators will explore the influence of this oceanographic mosaic on species interactions and community organization. As a dominant habitat-forming species, strong interactor, and major space occupant, M. californianus is arguably the core component of the rocky intertidal ecosystem along the upwelling-dominated CCS. Using an interdisciplinary, spatially extensive approach integrating inner shelf oceanography with ecology, physiology, and eco-mechanics, the interdisciplinary team will study the response of juvenile mussels M. californianus to OA. The studies span levels of biological organization, thereby allowing assessment of how the cost of forming a shell under field conditions might influence physiological performance and resistance to predation. This investigation will include modeling to link to larger-scale ecosystem and oceanographic dynamics in the CCS and beyond.Results from OMEGAS I show that the growth, survival, and shell strength of mussel larvae are strongly negatively affected by elevated pCO2, and that growth of adult mussels varied among sites within regions and between regions. Emerging data on natural variability in seawater conditions will allow a deeper exploration of the organismal response of M. californianus, and the ecological consequences of traits, such as reduced shell thickness and strength. The present project will expand and strengthen the existing oceanographic network to increase our understanding of the coastal OA regime, and provide the environmental context for ecological and physiological research. Specifically, this project will (1) conduct field and laboratory experiments on the influence of OA on the growth, shell accretion, and resistance to predation of juvenile mussels collected from 10 sites spanning 1,400 km of coastline, (2) link the OA-sensor oceanographic "backbone" to an existing database of community structure via ecological modeling to assess the influence of OA on coastal variation in community organization, (3) determine the physiological responses of juvenile mussels following field deployments and culture under common garden conditions to evaluate mechanistic underpinnings to the responses observed in mussels from different sites, (4) explore the physiological and transcriptomic response of mussels in lab mesocosms to field-documented variability in pCO2, and (5) using modified ROMS models, evaluate the linkage between basin-scale oceanography and local-scale variation in inner-shelf oceanography to evaluate the relative influences of large-to-local scale factors on OA variability. This research aims to understand how coastal ecosystems will respond to OA, and thus to develop our capacity to predict the future impact of OA on coastal ecosystems.Broader Impacts. This project will leverage complementary funding for research, training and outreach, and engage undergraduates, graduate students, and postdoctoral researchers, as well as PIs. Part of an overall goal is to increase the visibility and familiarity of OA science for policy makers and the general public. Outreach will be facilitated through extensive ties to COMPASS (Communication Partnership for Science and the Sea), public lectures, websites, and multimedia outlets, such as films and television. Each campus is engaged in local-to-national displays on OA.

该项目是对现有的海洋酸化（OA）赠款的续签，该拨款支持跨学科研究团队（称为Omegas）具有海洋学，生态学，生物地球化学，分子生理学和分子遗传学方面的专业知识。迄今为止的研究记录了加利福尼亚电流系统（CCS）内部架子上的动态海洋镶嵌物，该架子跨越了1,200 km，并且在海洋盆地空间尺度的潮汐，昼夜，事件和季节性时间尺度上发生了变化。在Omegas II中，该项目旨在更好地了解这种惊人的时空变异性的驱动力，并将OA海景与该生态系统Mussel Mytilus Californianus的关键成员的生理和生态表现联系起来。此外，调查人员将探讨这种海洋镶嵌物对物种相互作用和社区组织的影响。作为主要的栖息地物种，强大的相互作用者和主要的空间占用物，Californianus可以说是沿着上升占主导地位的CCS岩石潮间带生态系统的核心组成部分。使用跨学科的，空间广泛的方法将内部货架海洋学与生态学，生理学和生态力学相结合，跨学科团队将研究少年贻贝M. Californianus对OA的反应。研究涵盖了生物组织的水平，从而允许评估在田间条件下形成壳的成本如何影响生理性能和对捕食的抵抗力。这项研究将包括建模，以与CCS及其他地区的大规模生态系统和海洋动态联系起来。欧米茄一世的反应表明，贻贝幼虫的增长，生存和外壳强度受到PCO2升高的强烈负面影响，并且在地区和地区之间成人贻贝的生长在地区和区域之间的增长都会有所不同。有关海水条件下自然变异性的新兴数据将使加利福尼亚州骑马菌的有机体反应以及性状的生态后果（例如壳的厚度和强度降低）进行更深入的探索。本项目将扩大和加强现有的海洋学网络，以增强我们对沿海OA政权的了解，并为生态和生理研究提供环境环境。具体而言，该项目将（1）进行现场和实验室实验，对OA对从10个地点收集的少年贻贝的捕食对生长，壳体积聚和抵抗力的影响，（（2）将OA传感器海洋学“ backbone”链接到COAMETION INTORAITION OA（OA）对OA的现有数据库（2）链接（2），将OA的现有数据库链接起来（OA的现有数据库（评估OA）的现有数据库（OA）（oa）（OA）（OA）（OA）（OA都会构建OA AA的现有数据库（OA）。 responses of juvenile mussels following field deployments and culture under common garden conditions to evaluate mechanistic underpinnings to the responses observed in mussels from different sites, (4) explore the physiological and transcriptomic response of mussels in lab mesocosms to field-documented variability in pCO2, and (5) using modified ROMS models, evaluate the linkage between basin-scale oceanography and local-scale variation in内置海洋学评估大到本地量表因子对OA变异性的相对影响。这项研究旨在了解沿海生态系统将如何对OA做出反应，从而发展我们预测OA对沿海生态系统的未来影响的能力。该项目将利用互补的资金来进行研究，培训和推广，并吸引本科生，研究生和博士后研究人员以及PIS。总体目标的一部分是增加对政策制定者和公众的OA科学的知名度和熟悉程度。宣传将通过与指南针（科学与海洋的交流伙伴关系），公共讲座，网站和多媒体媒体（例如电影和电视）的广泛联系来促进。每个校园都在OA上进行本地展示。