Collaborative Research: Synergistic effects of Elevated Carbon Dioxide (CO2) and Temperature on the Metabolism, Growth, and Reproduction of Antarctic Krill (Euphausia Superba)

合作研究：二氧化碳 (CO2) 升高和温度升高对南极磷虾 (Euphausia Superba) 代谢、生长和繁殖的协同效应

• 批准号: 1246349
• 负责人: Brad Seibel
• 金额: $ 25.09万
• 依托单位: University of Rhode Island
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-05-01 至 2016-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1246349&HistoricalAwards=false
• 关键词: Collaborative; Research; Synergistic; effects; Elevated

Climate change projections for this century suggest that the Southern Ocean will be the first region to be affected by seawater chemistry changes associated with enhanced carbon dioxide (CO2). Additionally, regions of the Southern Ocean are warming faster than any other locations on the planet. Ocean acidification and warming may act synergistically to impair the performance of different organisms by simultaneously increasing metabolic needs and reducing oxygen transport. However, no studies have measured krill acid-base regulation, metabolism, growth, or reproduction in the context of ocean acidification or synergistic ?greenhouse? conditions of elevated CO2 and temperature. In the present project, the investigators will conduct both short and prolonged exposure experiments at Palmer Station, Antarctica to determine the responses of Euphausia superba to elevated CO2 and temperature. The investigators will test hypotheses related to acid-base compensation and acclimation of various life stages of krill to elevated CO2 and temperature. Furthermore, they will determine these impacts on feeding, respiration, metabolism, growth, and reproduction.The Antarctic krill, Euphausia superba, is a key species in Antarctic food webs as they are a primary food source for many of the top predators in the Southern Ocean including baleen whales, seals, penguins, and other sea birds. This project will determine the responses of Antarctic krill exposed to elevated CO2 and temperature and whether or not krill have the capacity to fully compensate under future ocean conditions. The proposed field effort will be complemented by an extensive broader impact effort focused on bringing marine science to both rural and urban high school students in the Midwest (Kansas). The core educational objectives of this proposal are to 1) instruct students about potential careers in marine science, 2) engage students and promote their interest in the scientific process, critical thinking, and applications of science, mathematics, and technology, and 3) and increase student and teacher awareness and understanding of the oceans and global climate change, with special focus on the Western Antarctic Peninsula region. Finally, this project will engage undergraduate and graduate students in the production, analysis, presentation and publication of datasets.

本世纪的气候变化预测表明，南大洋将是第一个受海水化学变化影响与增强二氧化碳（CO2）相关的地区。此外，南大洋地区的变暖速度比地球上任何其他地方都要快。海洋酸化和变暖可能会通过同时增加代谢需求并减少氧气运输来协同作用，以损害不同生物的性能。但是，在海洋酸化或协同化温室的背景下，尚无研究测量磷虾酸碱调节，代谢，生长或繁殖？二氧化碳和温度升高的条件。在本项目中，研究人员将在南极洲的帕尔默站进行短期和延长的暴露实验，以确定Euphausia Superba对升高的二氧化碳和温度的反应。研究人员将测试与酸碱补偿和适应磷虾各种生命阶段相关的假设，以升高二氧化碳和温度。此外，他们将确定这些对喂养，呼吸，代谢，生长和繁殖的影响。南极奎师将，Euphausia Superba，是南极食品网中的一个关键物种，因为它们是南方大海中许多顶级捕食者的主要食物来源，包括Baleen Whales，Seals，Seals，Seals，Seals，Seals，Seals，Seals，Seals，Penguins和其他海洋鸟类。该项目将确定暴露于二氧化碳和温度升高的南极磷虾的反应，以及在未来的海洋条件下是否有能力完全补偿。拟议的现场努力将以更广泛的影响力为重点介绍，重点是将海洋科学带到中西部（堪萨斯州）的农村和城市高中生。该提案的核心教育目标是向1）向学生提供有关海洋科学潜在职业的指导，2）吸引学生并促进他们对科学，数学和技术的科学过程，批判性思维以及3）的兴趣，以及3）以及提高学生和教师的认识以及对海洋和全球气候变化的认识，特别关注西方南方南方的五纯菜园地区。最后，该项目将吸引本科生和研究生参与数据集的生产，分析，演示和发布。