A comprehensive stalagmite investigation distinguishing anthropogenic and natural signals in Madagascar between 1680 and 1860

doi:10.1038/s41598-025-09222-5

IVPP-IR

	A comprehensive stalagmite investigation distinguishing anthropogenic and natural signals in Madagascar between 1680 and 1860
	Voarintsoa, Ny Riavo G.1; Fowler, Hallie M.1,2; Lapen, Thomas J.1; Rakotovao, Avotriniaina Z. M.3,4; Raza, Ali 1; Li, Xianglei 5; Cheng, Hai 6,7
	2025-07-08
发表期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
卷号	15 期号:1 页码:16
通讯作者	Voarintsoa, Ny Riavo G.(nyriavo.voarintsoa@gmail.com)
摘要	Disentangling anthropogenic from natural induced changes is difficult, but crucial to accurately assess the specific environmental impacts of humans' actions versus climate in the paleoclimate records. Here we combine a new set of proxies, including stable isotopes, element concentrations (mainly Mg, Sr, and U), and detailed mineralogy to better distinguish the impacts of these two factors in the stalagmite records. We studied the period between 1680 and 1860 CE because of the known historical events in Madagascar history (e.g., western colonization and the growth of Malagasy kingdom). This is an ideal period to study given these known events. Our data suggest that redox conditions during alternating wet and dry conditions is revealed by U/Ca covarying with delta 18O, but extreme climatic conditions may reverse that relationship. We also found an Mg/Ca increase combined with a decrease in delta 13C starting ca. 1820 CE that suggest anthropogenic imprints associated with local burning in Madagascar. This new multiproxy combination, paired with a thorough understanding of Madagascar history over this time allowed us to distinguish anthropogenic versus natural-induced signals in Madagascar stalagmite. This unique and novel pairing of proxies can be used to understand and predict human and natural induced changes in similar settings.
关键词	Madagascar O and C isotopes Redox conditions Anthropogenic traces Elemental composition Microstratigraphic log
DOI	10.1038/s41598-025-09222-5
关键词[WOS]	STABLE-ISOTOPE VARIATIONS ; OPEN SOLAR FLUX ; CLIMATE-CHANGE ; NORTHWESTERN MADAGASCAR ; ENVIRONMENTAL CONTROLS ; CALCITE PRECIPITATION ; CENTENNIAL VARIATIONS ; CRYSTAL MORPHOLOGY ; SPELEOTHEM RECORDS ; MAHAJANGA BASIN
收录类别	SCI
语种	英语
资助项目	UH-NRUF-National Research University Fund, NRUF FS 21 NSM[R0506078] ; UH-NRUF-National Research University Fund NRUF FS 21 NSM ; Schlumberger Foundation Faculty for the Future ; Geological Society of America
项目资助者	UH-NRUF-National Research University Fund, NRUF FS 21 NSM ; UH-NRUF-National Research University Fund NRUF FS 21 NSM ; Schlumberger Foundation Faculty for the Future ; Geological Society of America
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001524953600025
出版者	NATURE PORTFOLIO
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/24403
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Voarintsoa, Ny Riavo G.
作者单位	1.Univ Houston, Dept Earth & Atmospher Sci, Houston, TX 77004 USA 2.Reservoir Grp, Core Labs, Houston, TX USA 3.Geol Soc Madagascar, Antananarivo, Madagascar 4.Univ Antananarivo, Fac Sci, Ment Bassins Sedimentaires Evolut Conservat, Antananarivo, Madagascar 5.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China 6.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian, Peoples R China 7.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Voarintsoa, Ny Riavo G.,Fowler, Hallie M.,Lapen, Thomas J.,et al. A comprehensive stalagmite investigation distinguishing anthropogenic and natural signals in Madagascar between 1680 and 1860[J]. SCIENTIFIC REPORTS,2025,15(1):16.
APA	Voarintsoa, Ny Riavo G..,Fowler, Hallie M..,Lapen, Thomas J..,Rakotovao, Avotriniaina Z. M..,Raza, Ali.,...&Cheng, Hai.(2025).A comprehensive stalagmite investigation distinguishing anthropogenic and natural signals in Madagascar between 1680 and 1860.SCIENTIFIC REPORTS,15(1),16.
MLA	Voarintsoa, Ny Riavo G.,et al."A comprehensive stalagmite investigation distinguishing anthropogenic and natural signals in Madagascar between 1680 and 1860".SCIENTIFIC REPORTS 15.1(2025):16.