Climate Change Data Portal
DOI | 10.1016/j.quascirev.2019.03.016 |
Variation in late holocene marine environments in the Canadian Arctic Archipelago: Evidence from ringed seal bone collagen stable isotope compositions | |
Szpak P.; Savelle J.M.; Conolly J.; Richards M.P. | |
发表日期 | 2019 |
ISSN | 0277-3791 |
起始页码 | 136 |
结束页码 | 155 |
卷号 | 211 |
英文摘要 | Environmental change in the Arctic has been a primary topic of interest in recent years, particularly as it relates to the consequences of anthropogenic climate change. Sea ice is of particular importance in this context, both in terms of the effects of climate change in the Arctic, but also globally. Most studies examining the responses of various components of the biosphere to warming temperatures necessarily have a short temporal perspective. The purpose of this study was to use stable isotopes to examine long-term variation (c. 4000–500 yr BP) in the ecology of a ubiquitous Arctic marine mammal (the ringed seal, Pusa hispida) that is intimately linked to sea ice. We present δ 13 C and δ 15 N values for ringed seal bone collagen from archaeological sites in the central Canadian Arctic Archipelago as well as 61 new AMS 14 C dates from these sites. Ringed seal δ 13 C values increased between the earliest sites in our study, Early Pre-Dorset (c. 4000 cal yr BP), through to the Late Dorset period (c. 800 cal yr BP) suggesting increasing primary productivity derived from sea ice relative to phytoplankton over this period and an overall cooling trend. Between the Late Dorset (1500–700 yr BP) and Thule (c. 700−500 yr BP) periods there was an abrupt decline in the contribution of sea ice algae to higher trophic levels, consistent with reduced sea ice extent and increased open water conditions. These data demonstrate the potential of using marine mammals from archaeological sites to reconstruct the changing importance of sea ice to food webs over time and offer insight into the consequences of climatic variation at higher trophic levels, which is difficult if not impossible to obtain with other proxy records. © 2019 Elsevier Ltd |
英文关键词 | Archaeology; Arctic; Climate change; Dorset; Paleoeskimo; Sea ice; Seals; Stable isotopes; Thule |
语种 | 英语 |
scopus关键词 | Architecture; Bone; Collagen; Ecology; Isotopes; Mammals; Phytoplankton; Sea ice; Seals; Archaeology; Arctic; Dorset; Paleoeskimo; Stable isotopes; Thule; Climate change; alga; archaeology; biosphere; bone; climate variation; collagen; cooling; Holocene; marine environment; marine mammal; open water; phytoplankton; pinniped; proxy climate record; sea ice; stable isotope; trophic level; Arctic; Canada; Canadian Arctic; Dorset [Ontario]; Greenland; Ontario [Canada]; Thule; algae; Mammalia; Phoca hispida |
来源期刊 | Quaternary Science Reviews
![]() |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/151966 |
作者单位 | Department of Anthropology, Trent University, Peterborough, ON K9L 0G2, Canada; Department of Anthropology, McGill University, Montreal, QC H3A 2T7, Canada; Department of Archaeology, Simon Fraser University, Burnaby, BC V5A 1S6, Canada |
推荐引用方式 GB/T 7714 | Szpak P.,Savelle J.M.,Conolly J.,et al. Variation in late holocene marine environments in the Canadian Arctic Archipelago: Evidence from ringed seal bone collagen stable isotope compositions[J],2019,211. |
APA | Szpak P.,Savelle J.M.,Conolly J.,&Richards M.P..(2019).Variation in late holocene marine environments in the Canadian Arctic Archipelago: Evidence from ringed seal bone collagen stable isotope compositions.Quaternary Science Reviews,211. |
MLA | Szpak P.,et al."Variation in late holocene marine environments in the Canadian Arctic Archipelago: Evidence from ringed seal bone collagen stable isotope compositions".Quaternary Science Reviews 211(2019). |
条目包含的文件 | 条目无相关文件。 |
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。