干旱区生态环境知识资源中心(Arid): Exceptionally preserved asphaltic coprolites expand the spatiotemporal range of a North American paleoecological proxy

Arid

DOI	10.1038/s41598-020-61996-y
	Exceptionally preserved asphaltic coprolites expand the spatiotemporal range of a North American paleoecological proxy
	Mychajliw, Alexis M.; Rice, Karin A.; Tewksbury, Laura R.; Southon, John R.; Lindsey, Emily L.
通讯作者	Mychajliw, AM
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2020
卷号	10 期号:1
英文摘要	As fossilized feces, coprolites represent direct evidence of animal behavior captured in the fossil record. They encapsulate past ecological interactions between a consumer and its prey and, when they contain plant material, can also guide paleoenvironmental reconstructions. Here we describe the first coprolites from the lagerstatte Rancho La Brea (RLB) in Los Angeles, California, which also represent the first confirmed coprolites from an asphaltic (tar pit) context globally. Combining multiple lines of evidence, including radiocarbon dating, body size reconstructions, stable isotope analysis, scanning electron microscopy, and sediment analyses, we document hundreds of rodent coprolites found in association with plant material, and tentatively assign them to the woodrat genus Neotoma. Neotoma nests (i.e., middens) and their associated coprolites inform paleoclimatic reconstructions for the arid southwestern US but are not typically preserved in coastal areas due to environmental and physiological characteristics. The serendipitous activity of an asphalt seep preserved coprolites and their original cellulosic material for 50,000 years at RLB, yielding a snapshot of coastal California during Marine Isotope Stage 3. This discovery augments the proxies available at an already critical fossil locality and highlights the potential for more comprehensive paleoenvironmental analyses at other asphaltic localities globally.
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000563443900008
WOS关键词	RANCHO-LA-BREA ; LATE PLEISTOCENE ; TAR PITS ; SOUTHERN CALIFORNIA ; LATE QUATERNARY ; VEGETATION CHANGES ; LOS-ANGELES ; NEOTOMA ; CLIMATE ; DESERT
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325861
作者单位	[Mychajliw, Alexis M.; Rice, Karin A.; Tewksbury, Laura R.; Lindsey, Emily L.] La Brea Tar Pits & Museum, 5801 Wilshire Blvd, Los Angeles, CA 90036 USA; [Mychajliw, Alexis M.] Hokkaido Univ, Inst Low Temp Sci, Sapporo, Hokkaido 0600819, Japan; [Mychajliw, Alexis M.] Univ Oklahoma, Lab Mol Anthropol, Norman, OK 73019 USA; [Mychajliw, Alexis M.] Univ Oklahoma, Lab Microbiome Res, Norman, OK 73019 USA; [Southon, John R.] UC Irvine, Dept Earth Syst Sci, Keck CCAMS Grp, Irvine, CA 92697 USA
推荐引用方式 GB/T 7714	Mychajliw, Alexis M.,Rice, Karin A.,Tewksbury, Laura R.,et al. Exceptionally preserved asphaltic coprolites expand the spatiotemporal range of a North American paleoecological proxy[J],2020,10(1).
APA	Mychajliw, Alexis M.,Rice, Karin A.,Tewksbury, Laura R.,Southon, John R.,&Lindsey, Emily L..(2020).Exceptionally preserved asphaltic coprolites expand the spatiotemporal range of a North American paleoecological proxy.SCIENTIFIC REPORTS,10(1).
MLA	Mychajliw, Alexis M.,et al."Exceptionally preserved asphaltic coprolites expand the spatiotemporal range of a North American paleoecological proxy".SCIENTIFIC REPORTS 10.1(2020).