globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2012.10.003
论文题名:
Bathymetric distribution of ichnocoenoses from recent subtropical algal nodules off Fraser Island, eastern Australia
作者: Bassi D.; Iryu Y.; Braga J.C.; Takayanagi H.; Tsuji Y.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2013
卷: 369
起始页码: 58
结束页码: 66
语种: 英语
英文关键词: Australia ; Bioeroder distribution ; Coralline red algae ; Ichnocoenosis ; Recent ; Subtropical carbonates
英文摘要: Coralline algal nodules living on the subtropical shelf off Fraser Island, eastern Australia, from the inner to the uppermost outer-shelf, from 28 to 117. m water depth are pervasively bioeroded. Five ichnogenera have been identifed as nodule borers, comprising one ichnotaxon attributed to bivalves (Gastrochaenolites), one to sponges (Entobia) and three to polychaetes and barnacles (Trypanites, Maeandropolydora, Rogerella). Microtraces comparable to those produced by fungi, algae, bacteria and/or sponges are also present. Two ichnocoenoses have been recognised. The 'shallow' water ichnocoenosis (EGTM) occurs at 60. m and shallower depths and includes all identified ichnogenera. The 'deep' water ichnocoenosis (from 68 to 117. m) is characterised by Trypanites and the Trypanites/. Maeandropolydora network (TM ichnocoenosis) with a generally higher boring density than in shallower nodules. Decreasing size of algal nodules and reduced thickness of the coralline thalli probably explain the decrease in diversity of ichnogenera with depth, as the larger bioeroders are excluded from the ichnoassemblages. Lower growth rates favour higher density of bioerosion in deeper algal nodules. © 2012 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/69882
Appears in Collections:过去全球变化的重建

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作者单位: Dipartimento di Fisica e Scienze della Terra, Università degli Studi di Ferrara, via Saragat 1, I-44122 Ferrara, Italy; Department of Earth and Planetary Sciences, Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601, Japan; Departamento de Estratigrafía y Paleontología, Universidad de Granada, Campus Fuentenueva s/n, 18002 Granada, Spain; Exploration Department, Japan Oil, Gas and Metals National Corporation, Toranomon Twin Building, 2-10-1 Toranomon, Minato-ku, Tokyo 105-0001, Japan; Institute of Geology and Paleontology, Graduate School of Science, Tohoku University, Aobayama, Sendai 980-8578, Japan

Recommended Citation:
Bassi D.,Iryu Y.,Braga J.C.,et al. Bathymetric distribution of ichnocoenoses from recent subtropical algal nodules off Fraser Island, eastern Australia[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2013-01-01,369
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