Isotopic evidence for mammalian diets and environment in Early Pliocene Yepomera, Mexico

被引:1
作者
Hannold, Chance [1 ,2 ]
Wang, Yang [1 ,2 ]
Wang, Xiaoming [3 ]
Carranza-Castaneda, Oscar [4 ]
机构
[1] Florida State Univ, Dept Earth Ocean & Atmospher Sci, Tallahassee, FL 32306 USA
[2] Natl High Magnet Field Lab, Tallahassee, FL 32306 USA
[3] Nat Hist Museum Los Angeles Cty, Dept Vertebrate Paleontol, Los Angeles, CA 90007 USA
[4] Univ Nacl Autonoma Mexico, Ctr Geociencias, Campus UNAM Juriquilla, Queretaro 76230, Mexico
基金
美国国家科学基金会;
关键词
Paleoclimate; Paleoecology; GABI; C-4; plants; Savanna; Grassland; AMERICAN BIOTIC INTERCHANGE; GUANACO LAMA-GUANICOE; OXYGEN-ISOTOPE; TOOTH ENAMEL; STABLE-ISOTOPES; BONE PHOSPHATE; CARBON-DIOXIDE; CLIMATE-CHANGE; GREAT-PLAINS; CARBOXYLASE OXYGENASE;
D O I
10.1016/j.palaeo.2021.110569
中图分类号
P9 [自然地理学];
学科分类号
0705 ; 070501 ;
摘要
Concurrent expansion of grassland habitat in the Americas and first appearances of immigrant taxa to Mexico via the Great American Biotic Interchange (GABI) during the Late Miocene to Early Pliocene suggest a possible link between the timing of migrations and changes in the environmental conditions. However, the causes and environmental context of GABI migrations are not well understood. This study examined the stable isotope compositions of tooth enamel samples of the Yepomera fauna from western Chihuahua, Mexico, to explore environmental conditions of this region between 4.99 and 5.23 Ma, just after the arrival of C-4 plants in North and South America and before the first major migration of GABI. At Yepomera, there was distinct niche partitioning into C-3 diets, mixed diets, and C-4 diets. Despite expectations, no niche partitioning between equid species (Dinohippus mexicanus, Nannippus aztecus, Astrohippus stockii, and Neohipparion eurystyle) can be determined from carbon isotope ratios. The enamel carbon and oxygen isotope data suggest a relatively dry, open habitat dominated by either savanna or grassland, with a substantial C-4 vegetation component and a warmer and somewhat wetter climate than today. These reconstructions are consistent with a rise in C-4 biomass before 5.23 Ma and suggest that the conditions needed for growth of C-4 vegetation were prevalent in this region of Mexico. Future work along the GABI migration route will lead to a more complete understanding of the ecologic responses to changing climate and faunal interchange events.
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相关论文
共 218 条
  • [11] GRAZING ECOSYSTEM IN SERENGETI
    BELL, RHV
    [J]. SCIENTIFIC AMERICAN, 1971, 225 (01) : 86 - &
  • [12] DEPLETION OF C-13 IN LIGNIN AND ITS IMPLICATIONS FOR STABLE CARBON ISOTOPE STUDIES
    BENNER, R
    FOGEL, ML
    SPRAGUE, EK
    HODSON, RE
    [J]. NATURE, 1987, 329 (6141) : 708 - 710
  • [13] Early Pliocene climate: A perspective from the western equatorial Atlantic warm pool
    Billups, K
    Ravelo, AC
    Zachos, JC
    [J]. PALEOCEANOGRAPHY, 1998, 13 (05): : 459 - 470
  • [14] First North American fossil monkey and early Miocene tropical biotic interchange
    Bloch, Jonathan I.
    Woodruff, Emily D.
    Wood, Aaron R.
    Rincon, Aldo F.
    Harrington, Arianna R.
    Morgan, Gary S.
    Foster, David A.
    Montes, Camilo
    Jaramillo, Carlos A.
    Jud, Nathan A.
    Jones, Douglas S.
    MacFadden, Bruce J.
    [J]. NATURE, 2016, 533 (7602) : 243 - +
  • [15] Decrease in coccolithophore calcification and CO2 since the middle Miocene
    Bolton, Clara T.
    Hernandez-Sanchez, Maria T.
    Fuertes, Miguel-Angel
    Gonzalez-Lemos, Saul
    Abrevaya, Lorena
    Mendez-Vicente, Ana
    Flores, Jose-Abel
    Probert, Ian
    Giosan, Liviu
    Johnson, Joel
    Stoll, Heather M.
    [J]. NATURE COMMUNICATIONS, 2016, 7
  • [16] Boutton T, 1996, MASS SPECTROMETRY SO
  • [17] Bowen GJ, 2002, GEOLOGY, V30, P315, DOI 10.1130/0091-7613(2002)030<0315:SDOOIM>2.0.CO
  • [18] 2
  • [19] Pieces of the puzzle: Lack of significant C4 in the late Miocene of southern California
    Bowman, Chelsie N.
    Wang, Yang
    Wang, Xiaoming
    Takeuchi, Gary T.
    Faull, Mark
    Whistler, David P.
    Kish, Stephen
    [J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, 2017, 475 : 70 - 79
  • [20] Seasonal variation in kangaroo tooth enamel oxygen and carbon isotopes in southern Australia
    Brookman, Tom H.
    Ambrose, Stanley H.
    [J]. QUATERNARY RESEARCH, 2012, 78 (02) : 256 - 265