DOI: 10.1016/j.palaeo.2016.02.034
论文题名: Exploration of marine mammal paleogeography in the Northern Hemisphere over the Cenozoic using beta diversity
作者: Peredo C.M. ; Uhen M.D.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 449 起始页码: 227
结束页码: 235
语种: 英语
英文关键词: Beta diversity
; Cetacea
; Desmostylia
; Dispersal
; Pinnipedimorpha
; Sirenia
英文摘要: Previous studies on fossil marine mammal biogeography have identified several key geographical routes hypothesized to play a prominent role in their dispersal. This study aims to assess the degree to which each route plays a role. Data on fossil marine mammal temporal and geographic distributions were derived from the Paleobiology Database. We used a beta diversity metric, the Sørensen-Dice coefficient, to measure faunal similarity across ocean basins over the Cenozoic. Faunal similarity was high between the Mediterranean and the Atlantic but relatively low between the Mediterranean and the Pacific. Faunal similarity was observed across both halves of the North Pacific for all four groups in this study. Modern high similarity values between the Atlantic and the Pacific were not observed in the fossil record and were established in the Quaternary. The Strait of Gibraltar is shown to be a pivotal passageway for the dispersal of marine mammals, first in the Eocene as sirenians and cetaceans leave the Tethys Sea, and again as marine mammals reinvade the Mediterranean following the Messinian Salinity Crisis. The Central American Seaway plays only a minor role in marine mammal dispersal. Modern faunal similarity is the result of recent dispersal events in the Quaternary through the Arctic Ocean. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68474
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Environmental Science and Policy, George Mason University, Fairfax, VA, United States; Department of Atmospheric, Oceanic, and Earth Sciences, George Mason University, Fairfax, VA, United States
Recommended Citation:
Peredo C.M.,Uhen M.D.. Exploration of marine mammal paleogeography in the Northern Hemisphere over the Cenozoic using beta diversity[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,449