J
Jay Quade
Researcher at University of Arizona
Publications - 259
Citations - 23584
Jay Quade is an academic researcher from University of Arizona. The author has contributed to research in topics: Carbonate & Holocene. The author has an hindex of 77, co-authored 242 publications receiving 21391 citations. Previous affiliations of Jay Quade include Australian National University & University of Utah.
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Global vegetation change through the Miocene/Pliocene boundary
Thure E. Cerling,John Harris,Bruce J. MacFadden,Meave G. Leakey,Jay Quade,Véra Eisenmann,James R. Ehleringer +6 more
TL;DR: For example, this paper found that between 8 and 6 million years ago, there was a global increase in the biomass of plants using C4 photosynthesis as indicated by changes in the carbon isotope ratios of fossil tooth enamel in Asia, Africa, North America and South America.
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Development of Asian monsoon revealed by marked ecological shift during the latest Miocene in northern Pakistan
TL;DR: In this paper, stable carbon isotope results from associated pedogenic carbonate indicate a dramatic ecological shift from to dominated floodplain biomass beginning ∼7.4-7.0 Myr ago.
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On the isotopic composition of carbon in soil carbon dioxide
TL;DR: In this paper, the isotopic composition of carbon in soil CO2 differs from that of CO2 in soil-respired CO2, which is very close to the theoretical difference of 4.4%.
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Expansion of C4 ecosystems as an indicator of global ecological change in the late Miocene
TL;DR: It is proposed that the global expansion of C4 biomass may be related to lower atmospheric carbon dioxide levels because C4 photosynthesis is favoured over C3 photosynthesis when there are low concentrations of carbon dioxide in the atmosphere.