globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2015.03.041
论文题名:
Continental-style avian extinctions on an oceanic island
作者: Meijer H.J.M.; Tocheri M.W.; Due R.A.; Sutikna T.; Saptomo E.W.; James H.F.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 429
起始页码: 163
结束页码: 170
语种: 英语
英文关键词: Birds ; Extinction ; Flores ; Islands ; Late Pleistocene ; Wallacea
英文摘要: The Indonesian islands have long been recognized for their rich and unique avifaunas, but little is known regarding how past processes and events have shaped current avian distributions. Here we compare the modern non-passerine avifauna of Flores with the Late Pleistocene non-passerine fossil assemblage from the cave site of Liang Bua to assess whether the Late Pleistocene assemblage differs from the modern avifauna. Randomized permutation tests failed to detect a statistically significant difference in body size distributions, but a significant difference in dietary guild was found, as the modern fauna lacks scavengers. The emerging pattern of avian extinctions on Flores is characterized by a low proportion of extinct species, a loss of large-bodied species, and apparently minor effects on avian community structure. This is in contrast to other oceanic islands, which experienced dramatic changes in avifauna after the arrival of modern humans. Flores' close proximity to other islands and landmasses likely allowed for population connectivity that buffered populations from extinction. Widespread species may also have been able to recolonize if local extirpations took place. The extinction of the large-bodied avian scavengers Leptoptilos robustus and Trigonoceps sp. on Flores is consistent with the pattern of human-caused extinctions on other oceanic islands. However, the loss of these two large scavenging species may be linked to the extinction of the pygmy proboscidean (. Stegodon florensis insularis). Such a dependence of avian species on mammalian megafauna, leading to extinction by trophic cascade, is characteristic of continental Late Pleistocene extinctions. © 2015 Elsevier B.V..
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68933
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作者单位: Division of Birds, Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, United States; Human Origins Program, Department of Anthropology, National Museum of Natural History, Smithsonian Institution, Washington, DC, United States; Institut Catalá de Paleontologia Miqual Crusafont, 08193 Cerdanyola del Vallès, Barcelona, Spain; Department of Anthropology, Lakehead University, Thunder Bay, ON, Canada; National Centre for Archaeology, Jakarta, Indonesia; Centre for Archaeological Science, University of Wollongong, Wollongong, NSW, Australia

Recommended Citation:
Meijer H.J.M.,Tocheri M.W.,Due R.A.,et al. Continental-style avian extinctions on an oceanic island[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,429
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