Climate Change Data Portal
| OPP-PRF: Investigating the Effects of Late Holocene Climate Change on Polar Bears | |
| 项目编号 | 2139044 |
| Lillian Parker | |
| 项目主持机构 | University of Oklahoma Norman Campus |
| 开始日期 | 2022-01-01 |
| 结束日期 | 12/31/2023 |
| 英文摘要 | Polar bears evolved to thrive in the harsh Arctic environment. Because they depend on sea ice to travel and to hunt seals, past climatic changes that altered sea ice likely affected population size and distribution. This project investigates the effects of climate change – from approximately 5000 years ago to the present – on polar bears in the Bering Sea region. Polar bear remains have been identified from a 4700-year-old archaeological site on Unalaska Island, Alaska. These remains are approximately 200 miles south of where polar bears have been found in the recent past. By studying these remains, and comparing them to modern-day specimens, this research will advance understanding of the effects of historic climate cooling and present-day climate warming on polar bears. The presence of polar bear remains also has implications for the Native Unangan people. To explore the relationship between Unangan ancestors and polar bears, this project will provide training and mentorship to students and enhance the professional development of an early career Arctic scientist. Results from this study will be shared with the community in Dutch Harbor, Alaska, and through conference presentations and peer-reviewed articles. This project tests the hypothesis that late Holocene climate change resulted in demographic, genomic, and epigenomic changes in Bering Sea polar bears. The PI uses a multidisciplinary approach, combining zooarchaeological, paleogenomic and paleoepigenetic data from Neoglacial bear remains excavated from an archaeological site on Unalaska Island. First, morphometric and genomic DNA sequence data will be used to confirm that the remains are from polar bears and to determine the number of individuals represented in the assemblage. Then, genomic and epigenomic data from the Unalaskan bears will be compared to data from modern-day Bering Sea polar bears and brown bears from the Alaska Peninsula to determine 1) if polar bears and brown bears interbred in the Neoglacial Period, and 2) to assess demographic and adaptive responses of polar bear populations to Neoglacial cooling and present-day climate warming. 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. |
| 资助机构 | US-NSF |
| 项目经费 | $295,151.00 |
| 项目类型 | Standard Grant |
| 国家 | US |
| 语种 | 英语 |
| 文献类型 | 项目 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/210718 |
| 推荐引用方式 GB/T 7714 | Lillian Parker.OPP-PRF: Investigating the Effects of Late Holocene Climate Change on Polar Bears.2022. |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| [Lillian Parker]的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| [Lillian Parker]的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| [Lillian Parker]的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
