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項次 書目
1
題名:Ethology of the Zoophycos-Producer: Arguments Against the Gardening Model from δ13Corg Evidences of the Spreiten Material    
著者:Ludvig LowemarkIn-Tian LinChung-Ho WangChih-An HuhKuo-Yen WeiChih-Wei Chen
出版地區:台灣
出版城市:台北市
學科:地球科學
關鍵字:Chemosymbiosis ; Isotope fractionation ; Sulfur-oxidizing bacteria ; Sulfate reducing bacteria ; Methanogenesis
刊名:Terrestrial, Atmospheric and Oceanic Sciences
卷期:15卷4期(2004.11)
頁碼:713-725
語言:英語
摘要: 英文摘要PDF

Recently proposed ethological explanations for the trace fossil Zoophycos include gardening of microorganisms. Because microorganisms are known to fractionate strongly against 13C, especially under low oxic to anoxic conditions, it is argued that any gardening activity in the trace would result in a noticeable shift in δ13Corg between spreiten and adjacent host sediment. In order to test this hypothesis, δ13Corg of the Spreiten Material and directly adjacent host material was measured. Measured δ13Corg in a glacial section of the core ranges from -22.6 to -22.9? for host sediment and between -22.8 and -23.2? for Zoophycos material. In an interglacial section the Zoophycos material measures -21.9?, whereas the host material ranges from -21.2 to -21.4?. The minimal difference between Zoophycos and host material suggests that gardening plays an insignificant role. The gardening hypothesis is therefore rejected in favor of a cache model, where food is squirreled away for poorer times.


    

本卷期目次
Terrestrial, Atmospheric and Oceanic Sciences 15卷4期 (2004.11)
Morphology and Dynamic Sedimentology in front of the Retreating Tsengwen Delta, Southwestern Taiwan/ Eason HongTien-Chi HuangHo-Shing Yu
Improvement of GPS/MET Ionospheric Profiling and Validation Using the Chung-Li Ionosonde Measurements and the IRI model/ Lung-Chih TsaiWei-Hsiung Tsai
Investigating Subsurface Structures and P- and S-wave Velocities in the Taipei Basin/ Chien-Ying WangYi-Hen LeeMang-Long GerYi-Ling Chen
Analyzing the Relationship between Terminal Velocity of Raindrops and VHF Backscatter from Precipitation/ Ching-Lun SuYen-Hsyang ChuChun-Yi Chen
Relocation of Eastern Taiwan Earthquakes and Tectonic Implications/ Hao KuochenYih-Min WuChien-Hsin ChangJyr-Ching HuWen-Shan Chen
Multi-station Studies on Spread-F and VHF Scintillations in the Indian Sector/ P. V. S. Rama RaoD. S. V. V. D. PrasadK. NiranjanG. UmaS. Gopi KrishnaK. Venkateswarlu
Coseismic Movement and Seismic Ground Motion Associated with the 31 March 2002 off Hualien, Taiwan, Earthquake/ Horng-Yue ChenLong-Chen KuoShui-Beih Yu
Assessment of Traffic Contribution to Hydrocarbons Using 2,2-Dimethylbutane as a Vehicular Indicator/ Chih-Chung ChangTai-Yih ChenClock ChouShaw-Chen Liu
Ethology of the Zoophycos-Producer: Arguments Against the Gardening Model from δ13Corg Evidences of the Spreiten Material/ Ludvig LowemarkIn-Tian LinChung-Ho WangChih-An HuhKuo-Yen WeiChih-Wei Chen
Source Parameters of Regional Earthquakes in Taiwan: January-December, 2002/ Wen-Tzong LiangYu-Hua LiuHonn Kao
An Improved Estimate of Layer Thickness in the Atmosphere Using Dual-Frequency Interferometry Method of MST-VHF Radar/ Jenn-Shyong ChenYen-Hsyang Chu
 
   
 
   

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