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Sohma A, Imada R, Nishikawa T, Shibuki H. Modeling the life cycle of four types of phytoplankton and their bloom mechanisms in a benthic-pelagic coupled ecosystem. Ecol Modell 2022. [DOI: 10.1016/j.ecolmodel.2022.109882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Alosairi Y, Alsulaiman N. Hydro-environmental processes governing the formation of hypoxic parcels in an inverse estuarine water body: Model validation and discussion. MARINE POLLUTION BULLETIN 2019; 144:92-104. [PMID: 31180010 DOI: 10.1016/j.marpolbul.2019.04.067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 04/15/2019] [Accepted: 04/25/2019] [Indexed: 06/09/2023]
Abstract
The mechanism of fish kill events is not thoroughly understood in Kuwait Bay (KB). However, it is obvious that fish kill events have a close relationship with hypoxia due to some biogeochemical processes. Hydrodynamics controls the dissolved oxygen (DO) concentration that occurs within various spatial and temporal scales. The current study utilizes a previously validated hydrodynamic model to drive a three-dimensional water quality model for KB. The water quality model was validated using comprehensive field measurements during the summer of 2018. Reasonable model computations were achieved to represent the general patterns of the DO in KB. The model computations reproduced the formation of hypoxic water parcels. Some minor fish kill events that occurred during summer 2018 correlated well with predicted hypoxic parcels. The hydro-environmental controls over the extent of the hypoxic parcels and interplaying forces shall be addressed in a separate article by the same authors.
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Affiliation(s)
- Y Alosairi
- Coastal Management Program, Environmental and Life Sciences Research Center, Kuwait Institute for Scientific Research, Kuwait.
| | - N Alsulaiman
- Coastal Management Program, Environmental and Life Sciences Research Center, Kuwait Institute for Scientific Research, Kuwait
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Ménesguen A, Lacroix G. Modelling the marine eutrophication: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 636:339-354. [PMID: 29709851 DOI: 10.1016/j.scitotenv.2018.04.183] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 04/13/2018] [Accepted: 04/13/2018] [Indexed: 06/08/2023]
Abstract
In the frame of a national, joint scientific appraisal, 45 scientific French-speaking experts have been mandated in 2015-2016 by the French ministries of Environment and Agriculture to perform a global review of scientific literature dealing with the eutrophication phenomenon, in freshwater as well as in marine waters. This paper summarizes the main results of this review restricted to a sub-domain, the modelling approach of the marine eutrophication. After recalling the different aims pursued, an overview is given on the historical time course of this modelling effort, its world distribution and the various tools used. Then, the main results obtained are examined, highlighting the specific strengths and weaknesses of the present models. Needs for future improvement are then listed.
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Affiliation(s)
- Alain Ménesguen
- Department of Coastal Environment Dynamics (DYNECO), French Research Institute for the Exploitation of the Sea (IFREMER), Centre de Bretagne, B.P. 70, 29280 Plouzané, France.
| | - Geneviève Lacroix
- Royal Belgian Institute of Natural Sciences (RBINS), Operational Directorate Natural Environments (OD Nature), Gulledelle 100, 1200 Brussels, Belgium
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Sohma A, Shibuki H, Nakajima F, Kubo A, Kuwae T. Modeling a coastal ecosystem to estimate climate change mitigation and a model demonstration in Tokyo Bay. Ecol Modell 2018. [DOI: 10.1016/j.ecolmodel.2018.04.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Fukushima T, Komatsu E, Arai H, Kamiya K, Onda Y. Shifts of radiocesium vertical profiles in sediments and their modelling in Japanese lakes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 615:741-750. [PMID: 29017124 DOI: 10.1016/j.scitotenv.2017.09.286] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 09/25/2017] [Accepted: 09/26/2017] [Indexed: 06/07/2023]
Abstract
Vertical profiles of radiocesium concentrations were measured in sediment cores collected at various times after the 2011 Fukushima nuclear accident in five Japanese lakes (Hinuma, Kasumigaura, Kitaura, Onogawa and Sohara) with different morphological and trophic characteristics in order to investigate the sedimentation-diffusion processes. In lakes where sediments had high porosities and experienced considerable wave action due to shallowness, we observed rapid penetration of radiocesium to a certain depth just after the accident, followed by downward movement of the peak depths. In contrast, gradual downward transfers of distinct peaks were found in other types of lakes. A one-dimensional differential sediment model with water-sediments interaction processes was constructed to describe the vertical shift of radiocesium profiles. Our proposed submodels relating to the length scales of the mixing using wind-induced stress and porosity of sediments were constructed based on one measurement of the vertical distribution of radiocesium in three lakes (Hinuma, Kasumigaura and Sohara). This model was then validated using samples from those lakes in different years, as well as from two other lakes. Good agreement was obtained. We discuss our findings, the limits of model application, and future research targets.
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Affiliation(s)
- Takehiko Fukushima
- Kasumigaura Environmental Science Center, 1854 Okijyuku, Tsuchiura, Ibaraki 3000023, Japan; Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 3058572, Japan.
| | - Eiji Komatsu
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 3058572, Japan; Laboratory for Ecological Reconstruction Science Co. Ltd., 5-80 Aioicho, Naka-ku, Yokohama, Kanagawa 2310012, Japan
| | - Hiroyuki Arai
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 3058572, Japan; Institute for Environmental Informatics, IDEA Consultants, Ins., 2-2-2 Hayabuchi, Tsuzuki-ku, Yokohama, Kanagawa 2240025, Japan
| | - Koichi Kamiya
- Ibaraki Prefecture, 978-6 Kasahara-cho, Mito, Ibaraki 3108555, Japan
| | - Yuichi Onda
- Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 3058577, Japan
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Seasonal Variation in Sediment Oxygen Demand in a Northern Chained River-Lake System. WATER 2017. [DOI: 10.3390/w9040254] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Yamamoto H, Yamamoto T, Mito Y, Asaoka S. Numerical evaluation of the use of granulated coal ash to reduce an oxygen-deficient water mass. MARINE POLLUTION BULLETIN 2016; 107:188-205. [PMID: 27143344 DOI: 10.1016/j.marpolbul.2016.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 04/01/2016] [Accepted: 04/01/2016] [Indexed: 06/05/2023]
Abstract
Granulated coal ash (GCA), which is a by-product of coal thermal electric power stations, effectively decreases phosphate and hydrogen sulfide (H2S) concentrations in the pore water of coastal marine sediments. In this study, we developed a pelagic-benthic coupled ecosystem model to evaluate the effectiveness of GCA for diminishing the oxygen-deficient water mass formed in coastal bottom water of Hiroshima Bay in Japan. Numerical experiments revealed the application of GCA was effective for reducing the oxygen-deficient water masses, showing alleviation of the DO depletion in summer increased by 0.4-3mgl(-1). The effect of H2S adsorption onto the GCA lasted for 5.25years in the case in which GCA was mixed with the sediment in a volume ratio of 1:1. The application of this new GCA-based environmental restoration technique could also make a substantial contribution to form a recycling-oriented society.
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Affiliation(s)
- Hironori Yamamoto
- FUKKEN Co. Ltd., 2-10-11 Hikarimachi, Higashi-ku, Hiroshima-shi, Hiroshima 732-0052, Japan.
| | - Tamiji Yamamoto
- Graduate School of Biosphere Science, Hiroshima University, 1-4-4 Kagamiyama, Higashi-Hiroshima-shi 739-8528, Japan
| | - Yugo Mito
- FUKKEN Co. Ltd., 2-10-11 Hikarimachi, Higashi-ku, Hiroshima-shi, Hiroshima 732-0052, Japan
| | - Satoshi Asaoka
- Research Center for Inland Seas, Kobe University, 5-1-1 Fukaeminami, Higashinada-ku, Kobe-shi 658-0022, Japan
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Ordoñez C, de la Fuente A, Díaz-Palma P. Modeling the influence of benthic primary production on oxygen transport through the water–sediment interface. Ecol Modell 2015. [DOI: 10.1016/j.ecolmodel.2015.05.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Yamamoto T, Kondo S, Kim KH, Asaoka S, Yamamoto H, Tokuoka M, Hibino T. Remediation of muddy tidal flat sediments using hot air-dried crushed oyster shells. MARINE POLLUTION BULLETIN 2012; 64:2428-2434. [PMID: 23017947 DOI: 10.1016/j.marpolbul.2012.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Revised: 07/30/2012] [Accepted: 08/03/2012] [Indexed: 06/01/2023]
Abstract
In order to prove that hot air-dried crushed oyster shells (HACOS) are effective in reducing hydrogen sulfide in muddy tidal flat sediments and increasing the biomass, field experiments were carried out. The concentration of hydrogen sulfide in the interstitial water, which was 16 mg SL(-1) before the application of HACOS, decreased sharply and maintained almost zero in the experimental sites (HACOS application sites) for one year, whereas it was remained at ca. 5 mg SL(-1) in the control sites. The number of macrobenthos individuals increased to 2-4.5 times higher than that in the control site. Using a simple numerical model, the effective periods for suppression of hydrogen sulfide were estimated to be 3.2-7.6 and 6.4-15.2 years for the experimental sites with 4 and 8 tons per 10 × 10 × 0.2m area, respectively. From these results, it is concluded that HACOS is an effective material to remediate muddy tidal flats.
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Affiliation(s)
- Tamiji Yamamoto
- Graduate School of Biosphere Science, Hiroshima University, 1-4-4 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
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Math RK, Jin HM, Kim JM, Hahn Y, Park W, Madsen EL, Jeon CO. Comparative genomics reveals adaptation by Alteromonas sp. SN2 to marine tidal-flat conditions: cold tolerance and aromatic hydrocarbon metabolism. PLoS One 2012; 7:e35784. [PMID: 22563400 PMCID: PMC3338528 DOI: 10.1371/journal.pone.0035784] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Accepted: 03/21/2012] [Indexed: 11/19/2022] Open
Abstract
Alteromonas species are globally distributed copiotrophic bacteria in marine habitats. Among these, sea-tidal flats are distinctive: undergoing seasonal temperature and oxygen-tension changes, plus periodic exposure to petroleum hydrocarbons. Strain SN2 of the genus Alteromonas was isolated from hydrocarbon-contaminated sea-tidal flat sediment and has been shown to metabolize aromatic hydrocarbons there. Strain SN2's genomic features were analyzed bioinformatically and compared to those of Alteromonas macleodii ecotypes: AltDE and ATCC 27126. Strain SN2's genome differs from that of the other two strains in: size, average nucleotide identity value, tRNA genes, noncoding RNAs, dioxygenase gene content, signal transduction genes, and the degree to which genes collected during the Global Ocean Sampling project are represented. Patterns in genetic characteristics (e.g., GC content, GC skew, Karlin signature, CRISPR gene homology) indicate that strain SN2's genome architecture has been altered via horizontal gene transfer (HGT). Experiments proved that strain SN2 was far more cold tolerant, especially at 5°C, than the other two strains. Consistent with the HGT hypothesis, a total of 15 genomic islands in strain SN2 likely confer ecological fitness traits (especially membrane transport, aromatic hydrocarbon metabolism, and fatty acid biosynthesis) specific to the adaptation of strain SN2 to its seasonally cold sea-tidal flat habitat.
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Affiliation(s)
- Renukaradhya K. Math
- School of Biological Sciences, Research Center for Biomolecules and Biosystems, Chung-Ang University, Seoul, Republic of Korea
| | - Hyun Mi Jin
- School of Biological Sciences, Research Center for Biomolecules and Biosystems, Chung-Ang University, Seoul, Republic of Korea
| | - Jeong Myeong Kim
- School of Biological Sciences, Research Center for Biomolecules and Biosystems, Chung-Ang University, Seoul, Republic of Korea
| | - Yoonsoo Hahn
- School of Biological Sciences, Research Center for Biomolecules and Biosystems, Chung-Ang University, Seoul, Republic of Korea
| | - Woojun Park
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul, Republic of Korea
| | - Eugene L. Madsen
- Department of Microbiology, Cornell University, Ithaca, New York, United States of America
| | - Che Ok Jeon
- School of Biological Sciences, Research Center for Biomolecules and Biosystems, Chung-Ang University, Seoul, Republic of Korea
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YAMAMOTO H, YAMAMOTO T, TAKADA T, MITO Y, TAKAHASHI T. Dynamic Analysis of Oxygen-Deficient Water Mass Formed in the Northern Part of Hiroshima Bay Using a Pelagic-Benthic Coupled Ecosystem Model. ACTA ACUST UNITED AC 2011. [DOI: 10.2965/jswe.34.19] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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12
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Dittrich M, Wehrli B, Reichert P. Lake sediments during the transient eutrophication period: Reactive-transport model and identifiability study. Ecol Modell 2009. [DOI: 10.1016/j.ecolmodel.2009.07.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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