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DOI:	10.1371/journal.pone.0122201
论文题名:	Seeing the Unseen—Bioturbation in 4D: Tracing Bioirrigation in Marine Sediment Using Positron Emission Tomography and Computed Tomography
作者:	Matthieu Delefosse; Erik Kristensen; Diane Crunelle; Poul Erik Braad; Johan Hygum Dam; Helge Thisgaard; Anders Thomassen; Poul Flemming Høilund-Carlsen
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2015
发表日期:	2015-4-2
卷:	10, 期:4
语种:	英语
英文关键词:	Sediment ; Computed axial tomography ; Positron emission tomography ; Radioactivity ; Fluorides ; Imaging techniques ; Magnetic resonance imaging ; X-ray radiography
英文摘要:	Understanding spatial and temporal patterns of bioirrigation induced by benthic fauna ventilation is critical given its significance on benthic nutrient exchange and biogeochemistry in coastal ecosystems. The quantification of this process challenges marine scientists because faunal activities and behaviors are concealed in an opaque sediment matrix. Here, we use a hybrid medical imaging technique, positron emission tomography and computed tomography (PET/CT) to provide a qualitative visual and fully quantitative description of bioirrigation in 4D (space and time). As a study case, we present images of porewater advection induced by the well-studied lugworm (Arenicola marina). Our results show that PET/CT allows more comprehensive studies on ventilation and bioirrigation than possible using techniques traditionally applied in marine ecology. We provide a dynamic three-dimensional description of bioirrigation by the lugworm at very high temporal and spatial resolution. Results obtained with the PET/CT are in agreement with literature data on lugworm ventilation and bioirrigation. Major advantages of PET/CT over methods commonly used are its non-invasive and non-destructive approach and its capacity to provide information that otherwise would require multiple methods. Furthermore, PET/CT scan is versatile as it can be used for a variety of benthic macrofauna species and sediment types and it provides information on burrow morphology or animal behavior. The lack of accessibility to the expensive equipment is its major drawback which can only be overcome through collaboration among several institutions.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0122201&type=printable
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资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/22499
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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journal.pone.0122201.PDF（5314KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Download

作者单位:

Department of Biology, University of Southern Denmark, Odense, Denmark;Department of Biology, University of Southern Denmark, Odense, Denmark;Department of Biology, University of Southern Denmark, Odense, Denmark;Department of Nuclear medicine, Odense University Hospital, Odense, Denmark;Institute of Clinical Research, University of Southern Denmark, Odense, Denmark;Department of Nuclear medicine, Odense University Hospital, Odense, Denmark;Institute of Clinical Research, University of Southern Denmark, Odense, Denmark;Department of Nuclear medicine, Odense University Hospital, Odense, Denmark;Institute of Clinical Research, University of Southern Denmark, Odense, Denmark;Department of Nuclear medicine, Odense University Hospital, Odense, Denmark;Institute of Clinical Research, University of Southern Denmark, Odense, Denmark;Department of Nuclear medicine, Odense University Hospital, Odense, Denmark;Institute of Clinical Research, University of Southern Denmark, Odense, Denmark

Recommended Citation:

Matthieu Delefosse,Erik Kristensen,Diane Crunelle,et al. Seeing the Unseen—Bioturbation in 4D: Tracing Bioirrigation in Marine Sediment Using Positron Emission Tomography and Computed Tomography[J]. PLOS ONE,2015-01-01,10(4)

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