globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2016.03.017
Scopus记录号: 2-s2.0-84961675328
论文题名:
Size variation in Tachyoryctes splendens (East African mole-rat) and its implications for late Quaternary temperature change in equatorial East Africa
作者: Faith J.T.; Patterson D.B.; Blegen N.; O'Neill C.J.; Marean C.W.; Peppe D.J.; Tryon C.A.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 140
起始页码: 39
结束页码: 48
语种: 英语
英文关键词: Bergmann's rule ; Enkapune ya Muto ; Karungu ; Lake Naivasha ; Lake Victoria ; Paleoclimate ; Paleoenvironment ; Rusinga Island
Scopus关键词: Climate change ; Lakes ; Plants (botany) ; Vegetation ; Bergmann's rule ; Enkapune ya Muto ; Karungu ; Lake Naivasha ; Lake Victoria ; Paleo-environment ; Paleoclimates ; Rusinga Island ; Rats ; Bergmann Rule ; climate variation ; Holocene ; Last Glacial Maximum ; paleoclimate ; paleoenvironment ; population size ; precipitation (climatology) ; proxy climate record ; rodent ; seasonality ; size structure ; temperature effect ; temperature profile ; East African Lakes ; Homa Bay ; Kenya ; Kenya ; Lake Naivasha ; Lake Victoria ; Nakuru ; Rusinga Island ; Rattus ; Tachyoryctes splendens
英文摘要: This study develops a new proxy for Quaternary temperature change in tropical Africa through analysis of size variation in East African mole-rat (Tachyoryctes splendens). In modern mole-rats, mandibular alveolar length is unrelated to annual precipitation, precipitation seasonality, temperature seasonality, or primary productivity. However, it is inversely correlated with mean annual temperature, in agreement with Bergmann's rule. This relationship is observed at temperatures below ~17.3 °C, but not at higher temperatures. We apply these observations to late Quaternary mole-rats from Wakondo (~100 ka) and Kisaaka (~50 ka) in the Lake Victoria region and Enkapune ya Muto (EYM; ~7.2-3.2 ka) in Kenya's central rift. The Lake Victoria mole-rats are larger than expected for populations from warm climates typical of the area today, implying cooler temperatures in the past. The magnitude of temperature decline needed to drive the size shift is substantial (~4-6 °C), similar in magnitude to the degree of change between the Last Glacial Maximum and Holocene, but is consistent with regional temperature records and with scenarios linking equatorial African temperature to northern hemisphere summer insolation. Size changes through time at EYM indicate that rising temperatures during the middle Holocene accompanied and potentially contributed to a decline in Lake Naivasha and expansion of grassland vegetation. © 2016 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59610
Appears in Collections:过去全球变化的重建

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作者单位: Archaeology Program, School of Social Science, University of Queensland, Brisbane, QLD, Australia; Center for the Advanced Study of Human Paleobiology, Department of Anthropology, The George Washington University, Washington, DC, United States; Department of Anthropology, Harvard University, Cambridge, MA, United States; Institute of Human Origins, School of Human Evolution and Social Change, Arizona State University, Tempe, AZ, United States; Centre for Coastal Palaeoscience, Nelson Mandela Metropolitan University, Port Elizabeth, Eastern Cape, South Africa; Terrestrial Paleoclimatology Research Group, Department of Geosciences, Baylor University, Waco, TX, United States

Recommended Citation:
Faith J.T.,Patterson D.B.,Blegen N.,et al. Size variation in Tachyoryctes splendens (East African mole-rat) and its implications for late Quaternary temperature change in equatorial East Africa[J]. Quaternary Science Reviews,2016-01-01,140
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