Larval orientation, dispersal and connectivity in a brachyuran crab under ocean acidification and elevated temperature

海洋酸化和高温下短尾蟹幼虫的定向、分散和连接

• 批准号: 2049047
• 负责人: Daniel Holstein
• 金额: $ 92.2万
• 依托单位: Louisiana State University
• 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: 2021-08-01 至 2025-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2049047&HistoricalAwards=false
• 关键词: Larval; orientation; dispersal; connectivity; brachyuran

This award is funded in whole or in part under the American Rescue Plan Act of 2021 (Public Law 117-2).The stone crab fishery is a multimillion-dollar commercial industry in Florida, which may not be sustainable given forecasted climate change and the predicted increases in extreme weather events. Stone crab larval swimming behavior and survivorship are negatively affected by reduced pH (ocean acidification) and elevated temperatures. These conditions are expected to become more common and widespread along the western Florida coast and may impact the supply of larvae that settle into and replenish both unfished and fished populations. Changes in larval dispersal could lead to recruitment failure; however, the extent of such an outcome is currently unknown. The goal of this study is to develop models that forecast the abundance and distribution of Florida’s stone crabs under future climate scenarios. Laboratory experiments are quantifying how temperature and pH affect larval survivorship and behavior. Results from the laboratory studies are being integrated with information on ocean currents and chemistry into a biophysical model. This model predicts the effects of climate change on the stone crab population by combining projections of the physical and chemical environment with climate-induced changes to larval behavior. The broader impacts include relevance to sustainable management of the stone crab and other coastal crustacean fisheries, training opportunities for undergraduate and graduate students, and educational outreach. Curriculum development is occurring in partnership with Title-1 schools, and high-school students are developing short documentaries to be entered into a marine science film festival at Florida Southern College.In many coastal habitats, ocean acidification (OA) is occurring at an accelerated rate relative to end-of-century projections, largely due to localized wetland degradation, increased runoff, and eutrophication, all of which amplify variability in coastal pH. The ability to project future persistence of marine species and the sustainability of coastal fisheries depends on understanding how the combined effects of acidification and elevated temperature impact population connectivity and recruitment. Even small changes in planktonic larval survivorship, behaviors, or dispersal can lead to large population changes; however, predicting these changes requires understanding the biology of the organisms within the context of how the physical and chemical environment is changing. When exposed to reduced pH and elevated temperature conditions similar to those expected at the end of the century, some larvae not only experience increases in mortality, but they also change their swimming behavior, which in turn alters their dispersal in the coastal ocean. This study is quantifying the combined impacts of OA and elevated temperature on the dispersal and connectivity of a brachyuran crustacean, the stone crab. Controlled laboratory studies are measuring the effects of changes in pH and temperature on larval vertical swimming behavior, development, and survivorship. The results from the laboratory studies are being integrated with high-resolution spatially and temporally realistic hydrodynamic and carbonate chemistry projections in a coupled biophysical model to predict modifications to larval dispersal and their impact on population connectivity and persistence under different environmental conditions. This study is providing new insights into how larval behaviors affect the resilience of a crustacean metapopulation by quantifying dispersal patterns and connectivity, potential population fragmentation, and overall recruitment under current and future 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.

该奖项的全部或部分资金根据《2021 年美国救援计划法案》（公法 117-2）提供。石蟹渔业是佛罗里达州价值数百万美元的商业产业，考虑到预测的气候变化和预计极端天气事件的增加会受到 pH 值降低（海洋酸化）和气温升高的负面影响，这些情况预计将在佛罗里达州西海岸变得更加普遍和普遍，并可能影响鱼类的供应。幼虫定居并补充未捕捞和捕捞种群的情况可能会导致招募失败；然而，这种结果的程度目前尚不清楚。佛罗里达州的石蟹在未来的气候情景下，正在量化温度和 pH 值如何影响幼虫的生存和行为，并将实验室研究的结果与洋流和化学信息整合到一个生物物理模型中。通过将物理和化学环境的预测与气候引起的幼虫行为变化相结合，研究气候变化对石蟹种群的影响。更广泛的影响包括与石蟹和其他沿海甲壳类渔业的可持续管理的相关性、本科生的培训机会。正在与 Title-1 学校合作开发课程，高中生正在制作短片，以参加佛罗里达南方学院的海洋科学电影节。在许多沿海栖息地，海洋酸化。 (OA) 发生于相对于本世纪末的预测，这一速度加快，主要是由于局部湿地退化、径流增加和富营养化，所有这些都放大了沿海 pH 值的变化。预测海洋物种未来持久性和沿海渔业可持续性的能力取决于。了解酸化和气温升高的综合影响如何影响种群的连通性和补充，即使是浮游幼虫生存、行为或扩散的微小变化也可能导致种群的巨大变化；然而，预测这些变化需要了解浮游幼虫的生物学。当暴露于类似于本世纪末预期的 pH 值降低和温度升高的条件时，一些幼虫不仅死亡率增加，而且还会改变其游泳行为。 ，这反过来又改变了它们在沿海海洋中的分散。这项研究正在量化 OA 和升高的温度对短甲壳类动物石蟹的分散和连通性的综合影响。受控实验室研究正在测量 pH 值和温度变化的影响。温度开启实验室研究的结果正在与耦合生物物理模型中的高分辨率空间和时间现实流体动力学和碳酸盐化学预测相结合，以预测幼虫扩散的变化及其对种群连通性和生存的影响。这项研究通过量化当前和未来气候下的扩散模式和连通性、潜在的种群分裂以及总体补充，为幼虫行为如何影响甲壳类集合种群的恢复力提供了新的见解。该奖项反映了 NSF 的法定使命，并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，被认为值得支持。

项目成果

Habitat selection by post-settlement juvenile stone crabs (Menippe mercenaria) and predation risk in shallow near-shore habitats

定居后幼年石蟹（Menippe Mercenaria）的栖息地选择和近岸浅海栖息地的捕食风险

• DOI: 10.1016/j.jembe.2021.151679
• 发表时间: 2022-02
• 期刊: Journal of Experimental Marine Biology and Ecology
• 影响因子: 2
• 作者: Boehme;Roux;Goergen, Erin;Mancke, Harrison;Fisher, Samantha;Gravinese, Philip M.
• 通讯作者: Gravinese, Philip M.

HANDS-ON OCEANOGRAPHY • Do pH-Variable Habitats Provide Refuge for Stone Crabs from Coastal Acidification?

海洋学实践 – pH 值变化的栖息地是否为石蟹提供了免受沿海酸化影响的庇护所？

• DOI: 10.5670/oceanog.2023.105
• 发表时间: 2023-01
• 期刊: Oceanography
• 影响因子: 2.8
• 作者: Gravinese, Philip;Stewart, Samantha;Smith, Abigail;Paradis, Judy
• 通讯作者: Paradis, Judy

Climate Change Will Fragment Florida Stone Crab Communities

气候变化将使佛罗里达石蟹社区支离破碎

• DOI: 10.3389/fmars.2022.839767
• 发表时间: 2022-07-11
• 作者: Lauranne Alaerts;T. Dobbelaere;Philip M. Gravinese;E. Hanert
• 通讯作者: E. Hanert

Caribbean king crab larvae and juveniles show tolerance to ocean acidification and ocean warming

加勒比帝王蟹幼虫和幼蟹表现出对海洋酸化和海洋变暖的耐受性

• DOI: 10.1007/s00227-022-04053-8
• 发表时间: 2022-04
• 期刊: Marine Biology
• 影响因子: 2.4
• 作者: Gravinese, Philip M.;Perry, Shelby A.;Spadaro, Angelo Jason;Boyd, Albert E.;Enochs, Ian C.
• 通讯作者: Enochs, Ian C.