Effects of bioturbation on the erodibility of cohesive versus non-cohesive sediments along a current-velocity gradient: A case study on cockles
Li, Baoquan1; Cozzoli, Francesco2,3; Soissons, Laura M.2,3; Bouma, Tjeerd J.2,3,4,5; Chen, Linlin1; Bouma, Tjeerd J.(NIOZ Royal Netherlands Inst Sea Res, Dept Estuarine & Delta Syst EDS, POB 140, NL-4400 AC Yerseke, Netherlands); Chen, Linlin(Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China)
2017-11-01
发表期刊JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY
ISSN0022-0981
卷号496期号:1页码:84-90
摘要

Soft-bottom bioturbators are ecosystem engineers in the sense that they can have considerable effects on sediment erodibility and resuspension. The common cockle Cerastoderma edule is a bioturbating filter feeder that is widespread along the European Atlantic coastline. Its presence and activity can decrease sediment erosion thresholds in cohesive sediments but little is known about its effect on non-cohesive sediments. Using controlled annular flume experiments, we investigated the relative effects of different cockle densities on sediment re suspension in cohesive vs. non-cohesive sediments by assessing the following: (i) the mud and sand burrowing behavior of cockles, (ii) critical erosion thresholds, (iii) the mass of eroded sediment and (iv) erosion rates. Our results show that cackles were more active in non-cohesive sediment compared with cohesive sediment. Despite their lower activity, the presence of cockles in cohesive sediment increased sediment erodibility by reducing the critical erosion threshold (U-crit) and increasing both the mass of eroded sediment and erosion rate. In contrast, cockles had no effect on erodibility in non-cohesive sediment, especially on the eroded sediment mass and erosion rate. The mass eroded was not significantly different between cohesive and non-cohesive sediments when cockles were present. Our experiments show that the increased erodibility of cohesive sediment due to the. bioturbation by cockles is density dependent: higher cockle density results in stronger effects on erodibility. Moreover, this increase in cohesive sediment erosion due to cockle bioturbation was positively correlated with current velocity. In contrast, the erosion of non-cohesive sediment only depended on the current stress and was unaffected by cockle density. Considering the high abundance of C. edule, its widespread distribution and its extensive activities, the results of this study could be widely applicable to intertidal mud flats around the world.

关键词Cockle Cerastoderma Edule Bioturbation Sediment Erosion Erosion Threshold Erosion Rates
DOI10.1016/j.jembe.2017.08.002
项目资助者National Natural Science Foundation of China(NSFC41061130543) ; Netherlands Organisation for Scientific Research(843.10.003) ; Key Research Program of Chinese Academy of Sciences(KZZD-EW-14) ; Strategic Priority Research Program of Chinese Academy of Sciences(XDA11020403, XDA1102702) ; Centre of Expertise project Oesterdam
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收录类别SCI
关键词[WOS]Lugworms Arenicola-marina ; Cerastoderma-edule ; Hydrobia-ulvae ; Intertidal Mudflat ; Muddy Sediments ; Erosion ; Dynamics ; Transport ; Model ; Microphytobenthos
文章类型Article
语种英语
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology
WOS记录号WOS:000412252700010
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/23441
专题中科院海岸带环境过程与生态修复重点实验室
通讯作者Bouma, Tjeerd J.; Chen, Linlin; Bouma, Tjeerd J.(NIOZ Royal Netherlands Inst Sea Res, Dept Estuarine & Delta Syst EDS, POB 140, NL-4400 AC Yerseke, Netherlands); Chen, Linlin(Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China)
作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
2.NIOZ Royal Netherlands Inst Sea Res, Dept Estuarine & Delta Syst EDS, POB 140, NL-4400 AC Yerseke, Netherlands
3.Univ Utrecht, POB 140, NL-4400 AC Yerseke, Netherlands
4.Univ Appl Sci, Vlissingen, Netherlands
5.Univ Groningen, Fac Sci & Engn, Community & Conservat Ecol, Groningen, Netherlands
第一作者单位中国科学院烟台海岸带研究所
通讯作者单位中国科学院烟台海岸带研究所
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Li, Baoquan,Cozzoli, Francesco,Soissons, Laura M.,et al. Effects of bioturbation on the erodibility of cohesive versus non-cohesive sediments along a current-velocity gradient: A case study on cockles[J]. JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY,2017,496(1):84-90.
APA Li, Baoquan.,Cozzoli, Francesco.,Soissons, Laura M..,Bouma, Tjeerd J..,Chen, Linlin.,...&Chen, Linlin.(2017).Effects of bioturbation on the erodibility of cohesive versus non-cohesive sediments along a current-velocity gradient: A case study on cockles.JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY,496(1),84-90.
MLA Li, Baoquan,et al."Effects of bioturbation on the erodibility of cohesive versus non-cohesive sediments along a current-velocity gradient: A case study on cockles".JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY 496.1(2017):84-90.
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