气候变化领域集成服务门户(CCPortal): Analysis of environmental and microbiological changes in Onagawa Bay immediately after the tsunami of the Great East Japan Earthquake based on sediment cores

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DOI	10.1016/j.marpolbul.2020.111235
	Analysis of environmental and microbiological changes in Onagawa Bay immediately after the tsunami of the Great East Japan Earthquake based on sediment cores
	Okumura Y.; Kaneko K.; Ota H.; Nagasaka H.; Hara M.
发表日期	2020
ISSN	0025326X
卷号	157
英文摘要	We investigated two sediment cores to understand whether a tsunami in Onagawa Bay, Japan caused environmental changes. The value of δ13C ranged from −21.9‰ to −24.3‰ and of δ15N ranged from 5.1 to 5.9‰. We conclude that the source of the sediment in the present study area was mainly oceanic and not terrestrial. The chlorophyll concentration ranged from 1.8 to 4.0 μg/g ww, and did not vary greatly between surface and bottom layers. We inferred that all layers were deposited after the tsunami. The major phytoplankton taxa in sediments were diatoms from DNA sequencing. The presence of harmful dinoflagellates was minor. The concentrations of several heavy metals decreased slightly after the tsunami. We inferred that heavy metals in sediments were diluted by the tsunami disturbance. The land in Onagawa suffered serious damage, but disturbance of the seabed was much less evident. © 2020 Elsevier Ltd
英文关键词	Algae; Environmental sciences; Isotope ratios; Marine sediments; Oceanography; Tsunamis
语种	英语
scopus关键词	DNA sequences; Gene encoding; Heavy metals; Phytoplankton; Sedimentation; Tsunamis; Bottom layers; Chlorophyll concentration; DNA Sequencing; Environmental change; Great east japan earthquakes; Sediment core; Study areas; Sediments; arsenic; cadmium; carbon 13; cesium 134; cesium 137; chlorophyll; chromium; copper; DNA; heavy metal; iron; lead; manganese; nitrogen 15; water; zinc; carbon isotope; chlorophyll; concentration (composition); earthquake event; environmental assessment; environmental change; heavy metal; microbiology; nitrogen isotope; sediment chemistry; sediment core; tsunami; Article; bay; chlorophyll content; concentration (parameter); controlled study; diatom; dilution; dinoflagellate; DNA sequencing; environmental change; environmental microbiology; isotope analysis; Japan; marine sediment; oceanography; Onagawa Bay; particle size; phytoplankton; sediment; tsunami; water content; dinoflagellate; earthquake; sea; sediment; Honshu; Japan; Miyagi; Onagawa Bay; Tohoku; algae; Bacillariophyta; Dinophyceae; Bays; Dinoflagellida; Earthquakes; Geologic Sediments; Japan; Oceans and Seas
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148847
作者单位	Tohoku National Fisheries Research Institute, Japan Fisheries Research and Education Agency, 3-27-5, Shinhama, Shiogama, Miyagi 985-0001, Japan; Department of Marine Biotechnology, Faculty of Life Science and Biotechnology, Fukuyama University, Ohama, Onomichi, Hiroshima 722-2101, Japan; Miyagi Prefecture Fisheries Technology Institute, 97-6, Sodenohama, Watanoha, Ishinomaki, Miyagi 986-2135, Japan; IDEA Consultants Inc., 1334-5, Riemon, Yaizu, Shizuoka 421-0212, Japan; Graduate School of Agricultural Science, Tohoku University, 468-1, Aramaki, Aoba, Aoba, Sendai, Miyagi 980-0845, Japan; Hatasaka, Yoshida, Taiwa, Kurokawa, Miyagi 981-3625, Japan
推荐引用方式 GB/T 7714	Okumura Y.,Kaneko K.,Ota H.,et al. Analysis of environmental and microbiological changes in Onagawa Bay immediately after the tsunami of the Great East Japan Earthquake based on sediment cores[J],2020,157.
APA	Okumura Y.,Kaneko K.,Ota H.,Nagasaka H.,&Hara M..(2020).Analysis of environmental and microbiological changes in Onagawa Bay immediately after the tsunami of the Great East Japan Earthquake based on sediment cores.Marine Pollution Bulletin,157.
MLA	Okumura Y.,et al."Analysis of environmental and microbiological changes in Onagawa Bay immediately after the tsunami of the Great East Japan Earthquake based on sediment cores".Marine Pollution Bulletin 157(2020).