Invertebrate calcification and behavior in seawater of decoupled carbonate chemistry

解耦碳酸盐化学海水中的无脊椎动物钙化和行为

• 批准号: 2129942
• 负责人: Brian Gaylord
• 金额: $ 56.42万
• 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: 2022
• 资助国家: 美国
• 起止时间: 2022-02-01 至 2025-01-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2129942&HistoricalAwards=false
• 关键词: Invertebrate; calcification; behavior; seawater; decoupled

This research is exploring the capacity of coastal organisms to cope with alterations in seawater chemistry driven by both freshwater inputs and absorption of carbon dioxide into the world’s oceans (ocean acidification). The project focuses on calcification responses and behavioral impairments of shoreline animals under altered seawater chemistry, and forefronts a common mussel species (the California mussel), and a common snail (the black turban snail), each abundant on rocky shores along the west coast of North America. The target species operate as exemplar organisms for characterizing the responses of marine invertebrates more generally. Methods involve experimental decoupling of multiple components of the carbonate system of seawater to isolate drivers that are difficult to separate otherwise. Broader impacts include transfer of scientific information to policy-makers, including legislators, as well as training and skill-set development of future generations of scientists and citizens. One Ph.D. student is supported, as are UC Davis undergraduates conducting mentored research. The project also provides research internships for undergraduates from a local community college (Santa Rosa Junior College), many of whom are from underrepresented groups. The latter project component substantially bolsters an ongoing program at Bodega Marine Laboratory that includes efforts in diversity, equity, and inclusion. Data and interpretations from the project are feeding into an existing educational program that links to local K-12 schools and reaches ~10,000 members of the public each year.Overall, the research of the project is dissecting drivers of calcification and behavioral disruption in key shoreline invertebrates, across present-day and future carbonate system conditions appropriate to coastal marine environments. Efforts are exploring the extent to which calcification depends on one versus multiple parameters of the seawater carbonate system. In particular, existing conceptual models emphasize the importance of calcium carbonate saturation state (Ω) and/or the ratio of bicarbonate to hydrogen ion concentrations ([HCO3-]/[H+]), and the project is examining these mechanisms as well as the possibility that more than one driver acts simultaneously. It is doing so both in bivalves and in gastropods to test for generality across molluscs. The project is additionally examining whether pH is the only carbonate system factor contributing to known patterns of behavioral impairment in marine invertebrates. Leading explanations for debilitating behaviors induced by ocean acidification involve altered ion channel function, but discussion in the literature continues, and studies that explicitly decouple the carbonate system are necessary.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.

这项研究正在探索沿海生物科普淡水输入和世界海洋吸收二氧化碳（海洋酸化）所导致的海水化学变化的能力。该项目的重点是钙化反应和海岸线动物的行为障碍下改变海水化学，和forefronts一个常见的贻贝物种（加州贻贝），和一个常见的蜗牛（黑头巾蜗牛），每一个丰富的岩石海岸沿着北美西海岸。目标物种作为示范生物体，更普遍地描述海洋无脊椎动物的反应。方法涉及海水碳酸盐体系的多个组分的实验解耦，以分离难以分离的驱动剂。更广泛的影响包括向包括立法者在内的决策者转让科学信息，以及对未来几代科学家和公民进行培训和技能开发。一个博士学生是支持的，因为是加州大学戴维斯分校的本科生进行辅导研究。该项目还为当地社区学院（圣罗莎初级学院）的本科生提供研究实习机会，其中许多人来自代表性不足的群体。后一个项目组成部分大大支持了博德加海洋实验室正在进行的项目，包括多样性，公平和包容性的努力。该项目的数据和解释正在投入到现有的教育计划中，该计划与当地K-12学校联系，每年有约10，000名公众参与。总体而言，该项目的研究正在解剖关键海岸线无脊椎动物钙化和行为中断的驱动因素，跨越当前和未来适合沿海海洋环境的碳酸盐系统条件。人们正在努力探索钙化在多大程度上取决于海水碳酸盐系统的一个参数和多个参数。特别是，现有的概念模型强调碳酸钙饱和状态（Ω）和/或碳酸氢根与氢离子浓度（[HCO 3-]/[H+]）的比率的重要性，该项目正在研究这些机制以及一种以上驱动因素同时作用的可能性。它在双壳类和腹足类中都这样做，以测试软体动物的普遍性。该项目还在研究pH值是否是导致海洋无脊椎动物已知行为障碍模式的唯一碳酸盐系统因素。海洋酸化导致的衰弱行为的主要解释涉及改变离子通道功能，但文献中的讨论仍在继续，明确解耦碳酸盐系统的研究是必要的。该奖项反映了NSF的法定使命，并已被认为值得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的支持。