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Collaborative Research: Microscale interactions of foundation species with their fluid environment: biological feedbacks alter ecological interactions of mussels

合作研究：基础物种与其流体环境的微观相互作用：生物反馈改变贻贝的生态相互作用

基本信息

批准号：
2050273
负责人：
Emily Carrington
金额：
$ 45.64万
依托单位：
University of Washington
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2021
资助国家：
美国
起止时间：
2021-02-01 至 2025-01-31
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2050273&HistoricalAwards=false
关键词：
Collaborative Research Microscale interactions foundation

项目摘要

The project investigates how the metabolic activity of dense aggregations of marine organisms alter the water chemistry of their interstitial spaces, and how these microscale alterations feedback to affect the organisms’ interactions in coastal ecosystems. The research team focuses on bivalve mussels, foundation species that form dense ‘beds’ typically known for facilitating other species by ameliorating harsh flow conditions. This ability can become a liability, however, if flow is not sufficient to flush the interstitial spaces and steep, metabolically-driven concentration gradients develop. The research evaluates whether corrosive chemical microclimates (such as low oxygen or low pH) are most extreme in low flow, high temperature conditions, especially for dense aggregations of mussels with large biomass and/or high respiration rates, and if they negatively impact mussel beds and the diverse biological communities they support. The research addresses a global societal concern, the impact of anthropogenic climate change on coastal marine ecosystems, and has potential applications to aquaculture and biofouling industries by informing adaptation strategies to “future-proof” mussel farms in the face of climate change and improved antifouling practices for ships, moorings, and industrial cooling systems. The project forges new collaborations with investigators from three campuses and integrates research and education through interdisciplinary training of a diverse group of graduate, undergraduate and high school students. STEM education and environmental stewardship is promoted by the development of a K-12 level science curriculum module and a hand’s-on public exhibit of bivalve biology at a local shellfish farm. Research findings are disseminated in a variety of forums, including peer-reviewed scientific publications and research presentations at regional, national and international meetings.The research team develops a framework that links environmental conditions measured at a coarse scale (100m-100km; e.g., most environmental observatories) and ecological processes at the organismal scale (1 cm – 10 m). Specifically, the project investigates how aggregations of foundation species impact flow through interstitial spaces, and how this ultimately impacts water chemistry immediately adjacent to the organisms. The research focuses on mytilid mussels, with the expectation that the aggregation alters the flow and chemical transport in two ways, one by creating a physical resistance, which reduces the exchange, and the other by enhancing the exchange due to their incurrent/excurrent pumping. These metabolically-driven feedbacks are expected to be strongest in densely packed, high biomass aggregations and under certain ambient environmental conditions, namely low flow and elevated temperature, and can lead to a range of negative ecological impacts that could not be predicted directly from coarse scale measures of ambient seawater chemistry or temperature. The team develops computational fluid dynamic (CFD) models to predict interstitial flows and concentration gradients of dissolved oxygen and pH within mussel beds. The CFD model incorporates mussel behavior and physiological activity (filtration, gaping, respiration) based on published values as well as new empirical work. Model predictions are compared to flow and concentration gradients measured in mussel aggregations in the laboratory and field. Finally, the team conducts several short-term experiments to quantify some of the potential negative ecological impacts of corrosive interstitial water chemistry on mussel aggregations, such as reduced growth, increased dislodgement, increased predation risk, and reduced biodiversity. Because the model is based on fluid dynamic principles and functional traits, the framework is readily adaptable to other species that form dense assemblages, thereby providing a useful tool for predicting the ability of foundation species to persist and provide desirable ecosystem services under current and future multidimensional climate scenarios.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.

该项目研究了海洋生物密集聚集的代谢活动如何改变其间隙空间的水化学，以及这些微尺度的变化如何反馈影响沿海生态系统中生物的相互作用。研究小组专注于双壳贻贝，这是一种形成密集“床”的基础物种，通常通过改善恶劣的流动条件来促进其他物种的生存。然而，如果流量不足以冲洗间隙，并且产生陡峭的代谢驱动浓度梯度，这种能力可能成为一种负担。该研究评估了腐蚀性化学小气候（如低氧或低pH值）是否在低流量、高温条件下最为极端，特别是对于具有大生物量和/或高呼吸速率的贻贝密集聚集，以及它们是否对贻贝床及其所支持的多种生物群落产生负面影响。该研究解决了一个全球社会关注的问题，即人为气候变化对沿海海洋生态系统的影响，并通过为面对气候变化的“面向未来”的贻贝养殖场提供适应策略，以及改进船舶、系泊和工业冷却系统的防污措施，在水产养殖和生物防污行业中具有潜在的应用价值。该项目与来自三个校区的研究人员建立了新的合作关系，并通过对研究生、本科生和高中生的跨学科培训，将研究和教育结合起来。通过开发K-12级科学课程模块和在当地贝类养殖场举办双壳类生物实践公开展览，促进了STEM教育和环境管理。研究结果在各种论坛上传播，包括同行评议的科学出版物和区域、国家和国际会议上的研究报告。该研究小组开发了一个框架，将粗尺度（100 -100公里；例如，大多数环境观测站）测量的环境条件与有机尺度（1厘米-10米）的生态过程联系起来。具体来说，该项目研究了基础物种的聚集如何影响间隙空间的流动，以及这最终如何影响紧邻生物的水化学。该研究的重点是贻贝，期望聚集体通过两种方式改变流动和化学运输，一种是通过产生物理阻力，从而减少交换，另一种是通过其内/外泵浦增强交换。这些代谢驱动的反馈预计在高密度、高生物量聚集和某些环境条件下最为强烈，即低流量和高温，并可能导致一系列负面生态影响，这些影响无法通过环境海水化学或温度的粗略尺度测量直接预测。该团队开发了计算流体动力学（CFD）模型来预测贻贝床内的间隙流动和溶解氧浓度梯度和pH值。CFD模型结合了贻贝的行为和生理活动（过滤、张开、呼吸），基于已发表的数值和新的经验工作。将模型预测结果与在实验室和野外贻贝聚集中测量的流量和浓度梯度进行比较。最后，该团队进行了几个短期实验，以量化腐蚀性间隙水化学对贻贝聚集的一些潜在负面生态影响，如生长减少、移动增加、捕食风险增加和生物多样性减少。由于该模型基于流体动力学原理和功能特征，因此该框架很容易适用于形成密集组合的其他物种，从而为预测基础物种在当前和未来多维气候情景下持续存在并提供理想生态系统服务的能力提供了有用的工具。该奖项反映了美国国家科学基金会的法定使命，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估，被认为值得支持。

项目成果

期刊论文数量（14）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Energetic scope limits growth but not byssal thread production of two mytilid mussels

DOI：
10.1016/j.jembe.2023.151927
发表时间：
2023-07-13
期刊：
JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY
影响因子：
2
作者：
Roberts，Emily A.;Carrington，Emily
通讯作者：
Carrington，Emily

Resource allocation to a structural biomaterial: Induced production of byssal threads decreases growth of a marine mussel

结构生物材料的资源分配：诱导足丝的产生会降低海洋贻贝的生长

DOI：
10.1111/1365-2435.13788
发表时间：
2021
期刊：
Functional Ecology
影响因子：
5.2
作者：
Roberts, Emily A.;Newcomb, Laura A.;McCartha, Michelle M.;Harrington, Katie J.;LaFramboise, Sam A.;Carrington, Emily;Sebens, Kenneth P.
通讯作者：
Sebens, Kenneth P.

Divergent Effects of Ocean Warming on Byssal Attachment in Two Congener Mussel Species

海洋变暖对两种同类贻贝物种足底附着的不同影响

DOI：
10.1093/icb/icac111
发表时间：
2022
期刊：
Integrative And Comparative Biology
影响因子：
2.6
作者：
Newcomb, L. A.;Cannistra, A. F.;Carrington, E.
通讯作者：
Carrington, E.

Mussels Repair Shell Damage despite Limitations Imposed by Ocean Acidification

尽管受到海洋酸化的限制，贻贝仍能修复外壳损伤

DOI：
10.3390/jmse10030359
发表时间：
2022
期刊：
Journal of Marine Science and Engineering
影响因子：
2.9
作者：
George, Matthew N.;O’Donnell, Michael J.;Concodello, Michael;Carrington, Emily
通讯作者：
Carrington, Emily

The Synergistic Impacts of Anthropogenic Stressors and COVID-19 on Aquaculture: A Current Global Perspective