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| DOI | 10.1016/j.quascirev.2020.106244 |
| Relationships between climate change; human environmental impact; and megafaunal extinction inferred from a 4000-year multi-proxy record from a stalagmite from northwestern Madagascar | |
| Railsback L.B.; Dupont L.A.; Liang F.; Brook G.A.; Burney D.A.; Cheng H.; Edwards R.L. | |
| 发表日期 | 2020 |
| ISSN | 0277-3791 |
| 卷号 | 234 |
| 英文摘要 | Stalagmite ANJ94-2 from Anjohibe Cave in northwestern Madagascar provides an exceptionally detailed and precisely dated record of changing environmental conditions that, combined with previously published data from stalagmites, wetland deposits, and archaeological sites, allows insights into past climate change, human environmental impact, and megafaunal extinction. Proxies of past conditions recovered from Stalagmite ANJ94-2 include ratios of carbon and oxygen stable isotopes (δ13C and δ18O), mineralogy (calcite and aragonite), layer-bounding surfaces, layer-specific width, and detrital material. Those proxies suggest that the natural environment changed in response to changes in rainfall at time scales of a few decades to multiple centuries; comparison with distant proxies suggests that wetter conditions in northwestern Madagascar may have been linked to cooling in the Northern Hemisphere. Carbon isotope data nonetheless suggest that the greatest environmental change in the area coincided with human introduction of swidden (tavy) agriculture about 1200 years ago, during a time not of drought but perhaps of slightly increasing wetness. The timing and extent of environmental change 1200 to 600 years ago seen in stalagmite and wetland data suggest that human modification of the landscape had a causal role in the extinction of Madagascar's megafauna. On the other hand, the results combine with other recent research to indicate that drought was not the cause of the megafaunal extinction. © 2020 Elsevier Ltd |
| 英文关键词 | Africa; Environment; Extinction; Holocene; Landscape; Madagascar; Paleoclimatology; Speleothems; Stalagmite |
| 语种 | 英语 |
| scopus关键词 | Agricultural robots; Calcite; Carbon; Drought; Environmental impact; Isotopes; Light extinction; Wetlands; Africa; Environment; Holocenes; Landscape; Madagascar; Paleoclimatology; Speleothems; Stalagmite; Climate change; anthropogenic effect; cooling; environmental change; extinction; Holocene; landscape; paleoclimate; proxy climate record; rainfall; speleothem; stalagmite; wetland; Anjohibe Cave; Madagascar; Mahajanga |
| 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/151524 |
| 作者单位 | Department of Geology, University of Georgia, Athens, GA 30602, United States; Department of Geography, Western Illinois University, 1 University Circle, Macomb, IL 61455, United States; Department of Geography, University of Georgia, Athens, GA 30602, United States; National Tropical Botanical Garden, 3530 Papalina Road, Kalaheo, HI 96741, United States; College of Global Environmental Change, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China; Department of Earth Sciences, University of Minnesota, Minneapolis, MN 55455, United States |
| 推荐引用方式 GB/T 7714 | Railsback L.B.,Dupont L.A.,Liang F.,et al. Relationships between climate change; human environmental impact; and megafaunal extinction inferred from a 4000-year multi-proxy record from a stalagmite from northwestern Madagascar[J],2020,234. |
| APA | Railsback L.B..,Dupont L.A..,Liang F..,Brook G.A..,Burney D.A..,...&Edwards R.L..(2020).Relationships between climate change; human environmental impact; and megafaunal extinction inferred from a 4000-year multi-proxy record from a stalagmite from northwestern Madagascar.Quaternary Science Reviews,234. |
| MLA | Railsback L.B.,et al."Relationships between climate change; human environmental impact; and megafaunal extinction inferred from a 4000-year multi-proxy record from a stalagmite from northwestern Madagascar".Quaternary Science Reviews 234(2020). |
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