OPP-PRF Pygoscelis Penguin Response to Potential Prey Retention along the West Antarctic Peninsula

OPP-PRF 小企鹅对西南极半岛潜在猎物保留的反应

• 批准号: 2138277
• 负责人: Katherine Gallagher
• 金额: $ 28.93万
• 依托单位: SUNY at Stony Brook
• 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: 2022-02-15 至 2025-01-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2138277&HistoricalAwards=false
• 关键词: OPP; PRF; Pygoscelis; Penguin; Response

Pygoscelis penguins are central place foragers during the summer while they raise their chicks. They leave and return to the same colony location after hunting for food and rely on the availability of Antarctic krill, their primary food source. This research focuses on whether penguin diets and colony location reflect the retention of prey around and near colonies on the West Antarctic Peninsula. Eddies and other oceanographic processes may facilitate prey retention at certain locations, driving penguin colony establishment and success. This project hypothesizes that Pygoscelis penguin diets will be composed of more Antarctic krill (Euphausia superba) when local prey retention is high, possibly due to subsurface eddies. This hypothesis will be tested using satellite-based estimates of Pygoscelis penguin diet composition using multispectral sensor data to estimate nitrogen values and infer trophic level. Prey retention will be calculated along the peninsula using the Regional Ocean Modeling System (ROMS). Simulated particles and diel vertical migration will be used to mimic krill behavior. These particles can be experimentally seeded across multiple depths in multiple years to assess residence times in the system. Using penguin colony data from the Mapping Application for Penguin Populations and Projected Dynamics (MAPPPD), the PI will correlate diet and retention metrics to local penguin colony growth and persistence and build a predictive model of where colonies may form in the future.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.

Pygoscelis企鹅是中心的地方觅食在夏季，而他们提高他们的小鸡。它们离开并返回相同的殖民地位置狩猎后的食物和依赖南极磷虾的可用性，他们的主要食物来源。这项研究的重点是企鹅饮食和殖民地的位置是否反映了保留猎物周围和附近的殖民地在西南极半岛。漩涡和其他海洋过程可能有助于猎物保留在某些地点，推动企鹅群体的建立和成功。该项目假设，Pygoscelis企鹅饮食将由更多的南极磷虾（南极磷虾）时，当地的猎物保留高，可能是由于地下漩涡。这一假设将使用基于卫星的估计Pygoscelis企鹅饮食成分使用多光谱传感器数据估计氮值和推断营养级进行测试。将使用区域海洋模拟系统计算沿着半岛的猎物保留量。模拟颗粒和昼夜垂直迁移将被用来模拟磷虾的行为。这些颗粒可以在多年内跨多个深度进行实验性接种，以评估系统中的停留时间。利用企鹅种群和预测动态绘图应用程序（MAPPPD）中的企鹅群数据，PI将把饮食和保留指标与当地企鹅群的增长和持久性联系起来，并建立一个预测模型，预测未来企鹅群可能在哪里形成。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

Descriptions and patterns in opportunistic marine debris collected near Palmer Station, Antarctica

南极洲帕尔默站附近收集的机会主义海洋碎片的描述和模式

• DOI: 10.1016/j.marpolbul.2023.115952
• 发表时间: 2024
• 期刊: Marine Pollution Bulletin
• 影响因子: 5.8
• 作者: Gallagher, Katherine L.;Selig, Gina M.;Cimino, Megan A.
• 通讯作者: Cimino, Megan A.