Advances in Numerical Dating of Quaternary Glaciations in China

Yi, Chaolu; Zhang, Zhu; Wei, Lan; Cui, Zhijiu; Zheng, Benxing; Yafeng, Shi

doi:10.1127/0372-8854/2007/0051s2-0153

Cited by 59 publications

(66 citation statements)

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“…5). The severe habitat loss during glaciations probably contributed to the dramatic population decline of the Tibetan wolf between 10 and 55 kya (Xu and Shen 1995;Yi et al 2005;Clark et al 2009;Chevalier et al 2011;Heyman 2014;Zhang et al 2014). In addition, both archaeological and genetic analysis suggest that the first colonization might be as early as 30 kya (Aldenderfer 2011), and little evidence exists for permanent human occupation before 7 kya (Brantingham et al 2010;Chen et al 2015).…”

Section: Genomic Variation In Gray Wolvesmentioning

confidence: 99%

Worldwide patterns of genomic variation and admixture in gray wolves

et al. 2015

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The gray wolf (Canis lupus) is a widely distributed top predator and ancestor of the domestic dog. To address questions about wolf relationships to each other and dogs, we assembled and analyzed a data set of 34 canine genomes. The divergence between New and Old World wolves is the earliest branching event and is followed by the divergence of Old World wolves and dogs, confirming that the dog was domesticated in the Old World. However, no single wolf population is more closely related to dogs, supporting the hypothesis that dogs were derived from an extinct wolf population. All extant wolves have a surprisingly recent common ancestry and experienced a dramatic population decline beginning at least ∼30 thousand years ago (kya). We suggest this crisis was related to the colonization of Eurasia by modern human hunter-gatherers, who competed with wolves for limited prey but also domesticated them, leading to a compensatory population expansion of dogs. We found extensive admixture between dogs and wolves, with up to 25% of Eurasian wolf genomes showing signs of dog ancestry. Dogs have influenced the recent history of wolves through admixture and vice versa, potentially enhancing adaptation. Simple scenarios of dog domestication are confounded by admixture, and studies that do not take admixture into account with specific demographic models are problematic.

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Section: Genomic Variation In Gray Wolvesmentioning

confidence: 99%

Worldwide patterns of genomic variation and admixture in gray wolves

et al. 2015

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“…Dating techniques provide absolute chronologies and allow researchers to (i) model regional climate at a particular moment in time; (ii) compare regional and global glacier extents (Yi et al, 2005); and (iii) understand the duration of certain landscape formations from a geomorphological perspective. From the late twentieth century, new dating methods such as optically stimulated luminescence (OSL; e.g., Owen et al, 2002a;Spencer and Owen, 2004), cosmogenic radionuclide exposure (CRN; e.g., Owen et al, 2002b;Finkel et al, 2003;Owen et al, 2006), electron spin resonance (ESR; e.g., Yi et al, 2002;Zhou et al, 2002;Zhao et al, 2006), and accelerating mass spectrometry (AMS; e.g., Yi et al, 2004), have been refined and applied widely to dating glacial sediment.…”

Section: Introductionmentioning

confidence: 99%

OSL dating of glacier extent during the Last Glacial and the Kanas Lake basin formation in Kanas River valley, Altai Mountains, China

Yang

Dong

et al. 2009

Geomorphology

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“…These analyses suggested that the species underwent a notable range expansion, approximately 42-105 kya, that is following the penultimate glacial period that occurred in China between approximately 333 and 136 kya (Yi et al, 2005). This range expansion might reflect the most recent demographic shift of conifer forests in the Tsinling and adjacent mountains of central China in response to climatic oscillations during the Pleistocene (Zheng, 2000).…”

Section: Biogeographic Historymentioning

confidence: 99%

Species delimitation and biogeography of two fir species (Abies) in central China: cytoplasmic DNA variation

et al. 2011

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It remains unclear how speciation history might contribute to species-specific variation and affect species delimitation. We examined concordance between cytoplasmic genetic variation and morphological taxonomy in two fir species, Abies chensiensis and A. fargesii, with overlapping distributions in central China. Range-wide genetic variation was investigated using mitochondrial (mt) and plastid (pt) DNA sequences, which contrast in their rates of gene flow. Four mtDNA haplotypes were recovered and showed no obvious species' bias in terms of relative frequency. In contrast, a high level of ptDNA variation was recorded in both species with 3 common ptDNA haplotypes shared between them and 21 rare ptDNA haplotypes specific to one or other species. We argue that the lack of concordance between morphological and molecular variation between the two fir species most likely reflects extensive ancestral polymorphism sharing for both forms of cytoplasmic DNA variation. It is feasible that a relatively fast mutation rate for ptDNA contributed to the production of many species-specific ptDNA haplotypes, which remained rare due to insufficient time passing for their spread and fixation in either species, despite high levels of intraspecific ptDNA gene flow. Our phylogeographic analyses further suggest that polymorphisms in both organelle genomes most likely originated during and following glacial intervals preceding the last glacial maximum, when species distributions became fragmented into several refugia and then expanded in range across central China.

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Advances in Numerical Dating of Quaternary Glaciations in China

Cited by 59 publications

References 0 publications

Worldwide patterns of genomic variation and admixture in gray wolves

Worldwide patterns of genomic variation and admixture in gray wolves

OSL dating of glacier extent during the Last Glacial and the Kanas Lake basin formation in Kanas River valley, Altai Mountains, China

Species delimitation and biogeography of two fir species (Abies) in central China: cytoplasmic DNA variation

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