Strength May Lie in Numbers: Intertidal Foraminifera Non-Negligible Contribution to Surface Sediment Reworking  

作　　者：Vincent M. P. Bouchet Laurent Seuront Vincent M. P. Bouchet;Laurent Seuront(Univ. Lille, CNRS, Univ. Littoral Côte d’Opale, UMR 8187, LOG, Laboratoire d’Océanologie et de Géosciences, Wimereux, France;CNRS, Univ. Lille, Univ. Littoral Côte d’Opale, UMR 8187, LOG, Laboratoire d’Océanologie et de Géosciences, Wimereux, France;Department of Marine Energy and Resource, Tokyo University of Marine Science and Technology, Tokyo, Japan;Department of Zoology and Entomology, Rhodes University, Grahamstown, South Africa)

机构地区：[1]Univ. Lille, CNRS, Univ. Littoral Côte d’Opale, UMR 8187, LOG, Laboratoire d’Océanologie et de Géosciences, Wimereux, France [2]CNRS, Univ. Lille, Univ. Littoral Côte d’Opale, UMR 8187, LOG, Laboratoire d’Océanologie et de Géosciences, Wimereux, France [3]Department of Marine Energy and Resource, Tokyo University of Marine Science and Technology, Tokyo, Japan [4]Department of Zoology and Entomology, Rhodes University, Grahamstown, South Africa

出　　处：《Open Journal of Marine Science》2020年第3期131-140,共10页海洋科学期刊（英文）

摘　　要：The contribution of benthic foraminifera to sediment bioturbation has widely been overlooked despite their huge abundance in intertidal soft sediments. In this preliminary study, we specifically chose to focus on two key species of benthic foraminifera in temperate intertidal mudflats, <i><span style="font-size:12px;font-family:Verdana;">Quinqueloculina seminula</span></i><span style="font-size:12px;font-family:Verdana;"> and </span><i><span style="font-size:12px;font-family:Verdana;">Ammonia</span></i> <i><span style="font-size:12px;font-family:Verdana;">tepida</span></i><span style="font-size:12px;font-family:Verdana;">, and first experimentally investigated their individual movements at the sediment surface. We subsequently derived from these observations the individual-level surface sediment reworking rates, and used the actual abundance of these species to extrapolate these rates at the population level. Individual surface sediment reworking rates </span><i><span style="font-size:12px;font-family:Verdana;">SSRR</span>_{<span style="font-size:12px;font-family:Verdana;">i</span>}</i><span style="font-size:12px;font-family:Verdana;"> ranged between 0.13 and 0.32 cm²<span style="white-space:nowrap;">·</span></span><span style="font-size:12px;">^{<span style="font-family:Verdana;"></span>}</span><span style="font-size:12px;font-family:Verdana;">ind</span><span style="font-family:Verdana;font-size:8.33333px;">^-1<span style="white-space:nowrap;">·</span></span><span style="font-size:12px;font-family:Verdana;">day^-1</span> <span style="font-size:12px;font-family:Verdana;">for</span><span style="font-size:10pt;font-family:;" "=""> <i><span style="font-size:12px;font-family:Verdana;">Q. seminula</span></i><span style="font-size:12px;font-family:Verdana;">, and between 0.12 and 0.28 cm²<span style="white-space:nowrap;">·</span></span><span style="font-size:12px;font-family:Verdana;">ind^-1<span style="white-space:nowrap;">·</span></span><span stThe contribution of benthic foraminifera to sediment bioturbation has widely been overlooked despite their huge abundance in intertidal soft sediments. In this preliminary study, we specifically chose to focus on two key species of benthic foraminifera in temperate intertidal mudflats, <i><span style="font-size:12px;font-family:Verdana;">Quinqueloculina seminula</span></i><span style="font-size:12px;font-family:Verdana;"> and </span><i><span style="font-size:12px;font-family:Verdana;">Ammonia</span></i> <i><span style="font-size:12px;font-family:Verdana;">tepida</span></i><span style="font-size:12px;font-family:Verdana;">, and first experimentally investigated their individual movements at the sediment surface. We subsequently derived from these observations the individual-level surface sediment reworking rates, and used the actual abundance of these species to extrapolate these rates at the population level. Individual surface sediment reworking rates </span><i><span style="font-size:12px;font-family:Verdana;">SSRR</span>_{<span style="font-size:12px;font-family:Verdana;">i</span>}</i><span style="font-size:12px;font-family:Verdana;"> ranged between 0.13 and 0.32 cm²<span style="white-space:nowrap;">·</span></span><span style="font-size:12px;">^{<span style="font-family:Verdana;"></span>}</span><span style="font-size:12px;font-family:Verdana;">ind</span><span style="font-family:Verdana;font-size:8.33333px;">^-1<span style="white-space:nowrap;">·</span></span><span style="font-size:12px;font-family:Verdana;">day^-1</span> <span style="font-size:12px;font-family:Verdana;">for</span><span style="font-size:10pt;font-family:;" "=""> <i><span style="font-size:12px;font-family:Verdana;">Q. seminula</span></i><span style="font-size:12px;font-family:Verdana;">, and between 0.12 and 0.28 cm²<span style="white-space:nowrap;">·</span></span><span style="font-size:12px;font-family:Verdana;">ind^-1<span style="white-space:nowrap;">·</span></span><span st

关 键 词：Benthic Foraminifera BIOTURBATION Surface Sediment Reworking Rate Intertidal Mudflats 

分 类 号：O17[理学—数学]