Small mammal tooth enamel carbon isotope record of C4 grasses in late Neogene China

Arppe, Laura; Kaakinen, Anu; Passey, Benjamin H.; Zhang, Zhaoqun

doi:10.1016/j.gloplacha.2015.09.003

Cited by 4 publications

(3 citation statements)

References 96 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The percentage of C 4 grasses in Inner Mongolia largely decreased at ~4.0 Ma, resembling the modern vegetation that is dominated by cold-adapted C 3 grasses 18 . The vegetation of the Lingtai area also changed from C 3 /C 4 mixed grassland in the late Miocene–Pliocene to pure C 3 grassland in the Quaternary, similar to modern vegetation 20 . In the Linxia Basin, C 4 grasses largely increased in the Quaternary, but they remained dominated by C 3 grasses, similar to modern vegetation 21 .…”

Section: Discussionmentioning

confidence: 71%

Asian monsoon rainfall variation during the Pliocene forced by global temperature change

Wang

Zhao

et al. 2019

Nat Commun

View full text Add to dashboard Cite

The Asian monsoon variations under global temperature changes during the Pliocene are still debated. Here we use a sedimentary record of phytoliths (plant silica) from the Weihe Basin, central China, to explore the history of C4 grasses and quantitatively reconstruct the Asian monsoon climate since the late Miocene. Our results show that C4 grasses have been a dominant grassland component since ~11.0 Ma. A subsequent marked decrease in warm- and humid-adapted C4 grasses and an increase in cool- and dry-adapted C3 grasses occurred in the Pliocene, ~4.0 Ma; the phytolith-based quantitative reconstruction of mean annual precipitation marked a decrease from 800~1673 mm to 443~900 mm, indicating a reduction in Asian monsoon rainfall in the Pliocene. Our newly obtained records conflict with the hypothesis that the growth of the Tibetan Plateau strengthened the Asian monsoon rainfall. Nevertheless, they emphasize the importance of global temperature as a determinant of Pliocene Asian monsoon variations.

show abstract

Section: Discussionmentioning

confidence: 71%

Asian monsoon rainfall variation during the Pliocene forced by global temperature change

Wang

Zhao

et al. 2019

Nat Commun

View full text Add to dashboard Cite

show abstract

“…the 7.4-7.2 Ma expansion of C4 grasslands on the Indian subcontinent as documented from the Indus Fan, Arabian Sea, by Feakins et al 2020), which lags slightly behind the change in Indian Ocean monsoon intensity inferred from carbonate nodule δ 18 O (Freeman & Colarusso, 2001) but is contemporaneous with the increase in soil carbonate δ 13 C of Quade et al (1989). Additionally, northward C 4 grassland expansion is consistent with the shift towards higher δ 13 C of mammal tooth enamel, which indicates a diet including more C 4 grasses, shortly after 10 Ma in northern Pakistan but later in China (Arppe et al 2015).…”

Section: C1 First Episode Of C 4 Expansion ~71 Mamentioning

confidence: 72%

“…Additionally, northward C 4 grassland expansion is consistent with the shift towards higher δ 13 C of mammal tooth enamel, which indicates a diet including more C 4 grasses, shortly after 10 Ma in northern Pakistan but later in China (Arppe et al . 2015).…”

Section: Resultsmentioning

confidence: 99%

Multi-phase ecological change on Indian subcontinent from the late Miocene to Pleistocene recorded in the Nicobar Fan

2023

View full text Add to dashboard Cite

Modern grasslands on the Indian subcontinent, North and South America, and East Africa expanded widely during the late Miocene – earliest Pleistocene, likely in response to increasing aridity. Grasses utilizing the C4 photosynthetic pathway are more tolerant of high temperatures and dry conditions, and because they induce less C isotope fractionation than plants using the C3 pathway, the expansion of C4 grasslands can be traced through the δ13C of organic matter in soils and terrigenous marine sediments. We present a high-resolution record of the elemental and isotopic composition of bulk organic matter in the Nicobar Fan sediments from IODP Site U1480, off western Sumatra, to elucidate the timing and pace of the C3–C4 plant transition within the ∼1.5 × 106 km2 catchments of the Ganges/Brahmaputra river system, which continue to supply voluminous Himalaya-derived sediments to the Bay of Bengal. Using a multi-proxy approach to correct for the effects of marine organic matter and account for major sources of uncertainty, we recognize two phases of C4 expansion starting at ∼7.1 Ma, and at ∼3.5 Ma, with a stepwise transition at ∼2.5 Ma. These intervals appear to coincide with periods of Indian Ocean and East Asian monsoon intensification, as well as the expansion of Northern Hemisphere glaciation starting at ∼2.7 Ma. Our data from the deep sea for a multi-phased C4 expansion on the Indian subcontinent are in agreement with terrestrial data from the Indian Siwaliks.

show abstract

Carbon isoscapes of rodent diets in the Great Plains USA deviate from regional gradients in C4 grass abundance due to a preference for C3 plant resources

Haveles

Fox

Fox-Dobbs

2019

Palaeogeography, Palaeoclimatology, Palaeoecology

View full text Add to dashboard Cite

Small mammal tooth enamel carbon isotope record of C4 grasses in late Neogene China

Cited by 4 publications

References 96 publications

Asian monsoon rainfall variation during the Pliocene forced by global temperature change

Asian monsoon rainfall variation during the Pliocene forced by global temperature change

Multi-phase ecological change on Indian subcontinent from the late Miocene to Pleistocene recorded in the Nicobar Fan

Carbon isoscapes of rodent diets in the Great Plains USA deviate from regional gradients in C4 grass abundance due to a preference for C3 plant resources

Contact Info

Product

Resources

About