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  1. NTU Scholars
  2. 理學院
  3. 地質科學系
Please use this identifier to cite or link to this item: https://scholars.lib.ntu.edu.tw/handle/123456789/322626
Title: Temporal variations of the trace fossil Zoophycos in a 425 ka long sediment record from the South China Sea: Implications for the ethology of the Zoophycos producer
Authors: L{\\"o
LUDVIG LOWEMARK 
Keywords: Ichnofossils; Lebensspuren; Quaternary; South China Sea; Zoophycos
Issue Date: 2006
Journal Volume: 143
Journal Issue: 1
Start page/Pages: 105-114
Source: Geological Magazine 
Abstract: 
A 425 ka long record from piston core GIK17925-3 taken in the northeastern South China Sea was used to study the environmental conditions controlling the distribution of the Zoophycos trace fossil. The 12 m long core offers a unique opportunity to study the response of the Zoophycos-producing animal to environmental variations over four glacial-interglacial cycles. The trace fossils show a strong glacial to interglacial variation in their abundance with a special preference for intervals with low sedimentation rates. Additional X-ray radiograph studies of piston cores from the Southeast Asian Marginal Seas show that the trace fossil Zoophycos is widespread in slope and deep-marine sediments, with the highest abundances encountered in low sedimentation rate settings. The preference of the Zoophycos producer for low sedimentation rates in a setting with strong seasonal fluctuations in food supply due to the shift between winter and summer monsoons, is interpreted to be the result of a cache-model behaviour, where food is collected during rich times and squirrelled away for poor times. Core GIK17925-3 also offers an opportunity to assess the impact of Zoophycos bioturbation on various palaeoenvironmental proxies. In this core, more than 30 % of the measured data points were more or less strongly affected by Zoophycos bioturbation. Together with the widespread occurrence this percentage indicates that Zoophycos may pose a serious threat to palaeoclimatic reconstructions in cores from low to moderate sedimentation rate sites. © 2006 Cambridge University Press.
URI: http://www.scopus.com/inward/record.url?eid=2-s2.0-33644927787&partnerID=MN8TOARS
http://scholars.lib.ntu.edu.tw/handle/123456789/322626
DOI: 10.1017/S0016756805001408
SDG/Keyword: Biology; Food supply; Glacial geology; Pistons; Submarine geology; Ichnofossils; Lebensspuren; Quaternary; South China sea; Zoophycos; Sedimentation; Quaternary; temporal variation; trace fossil; Pacific Ocean; South China Sea; Animalia; Zoophycos
[SDGs]SDG14
Appears in Collections:地質科學系

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臺大位居世界頂尖大學之列,為永久珍藏及向國際展現本校豐碩的研究成果及學術能量,圖書館整合機構典藏(NTUR)與學術庫(AH)不同功能平台,成為臺大學術典藏NTU scholars。期能整合研究能量、促進交流合作、保存學術產出、推廣研究成果。

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