Sediment oxygen demand in Hiroshima Bay

Seiki, Tohru; Izawa, Hirofumi; Date, Etsuji; Sunahara, Hiroshi

doi:10.1016/0043-1354(94)90276-3

Cited by 53 publications

(19 citation statements)

References 27 publications

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“…SOC rates at Aqaba were also similar to those measured at a variety of different field sites, e.g. 13 to 38 mmol m -2 d -1 in Hiroshima Bay (Seiki et al 1989(Seiki et al , 1994) and 35 mmol m -2 d -1 in a coastal lagoon in the South Atlantic Bight (Marinelli et al 1998).…”

Section: Metabolism Of Carbonate and Silicate Sandssupporting

confidence: 51%

Benthic metabolism and degradation of natural particulate organic matter in carbonate and silicate reef sands of the northern Red Sea

Wild¹,

Rasheed²,

Jantzen³

et al. 2005

Mar. Ecol. Prog. Ser.

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The influence of natural particulate organic matter (POM) input on sedimentary oxygen consumption (SOC) in permeable carbonate and silicate sediments close to a coral reef was investigated in front of the Marine Science Station in Aqaba, Jordan (northern Red Sea). We conducted 7 in situ experiments in stirred benthic chambers. Without additional POM input, SOC rates were similar and not significantly different (p > 0.5) in carbonate and silicate sands, with average rates of 20 ± 4 (n = 10) and 16 ± 2 (n = 3) mmol O 2 m -2 d -1, respectively. Gross photosynthesis in the carbonate and silicate sands accounted for 15 to 23 mmol produced O 2 m -2 d -1, characterising both sands as largely independent of allochthonous carbon input. SOC of unamended carbonate sands showed no significant variation in 5 in situ experiments conducted within a period of 19 d. Addition of 2 energyrich sources of naturally occurring POM (coral mucus and clam eggs) resulted in significantly (p < 0.0001) increased SOC rates in the carbonate sands, but not in the silicate sands. Addition of a suspension containing high concentrations of zooxanthellae did not result in higher SOC in the carbonate sands, indicating that zooxanthellae cannot easily be degraded in reef sediments. Our results highlight the short cut between coral mucus production and degradation in the adjacent reef sands. Suspended particles are initially trapped by the cohesive mucus on the coral surface, and ensuing mucus strings sink to the seafloor at a short distance from the mucus-producing coral. Carbonate sands as porous filter systems obviously harbour more active heterotrophic microbial communities than silicate sands, and thus may constitute a major site of organic matter degradation in the reef ecosystem.

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Section: Metabolism Of Carbonate and Silicate Sandssupporting

confidence: 51%

Benthic metabolism and degradation of natural particulate organic matter in carbonate and silicate reef sands of the northern Red Sea

Wild¹,

Rasheed²,

Jantzen³

et al. 2005

Mar. Ecol. Prog. Ser.

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“…Rounds and Doyle [8] found that the rate of SOD by 1-4 g/m2/day (typical SOD value of sandy sediments with little organic material) was still high enough to be an important component in a DO depletion. Seiki, et al [9] found the similar result that a minute amount of biodegradable organic compound in the sandy environment could also consume oxygen significantly. The decrease in concentration DO can cause a condition called hypoxia (DO < 2 mg/L) and anoxia (no DO at all) that can affect aquatic ecology and human population due to the loss of resources and water pollution [7].…”

Section: +supporting

confidence: 57%

Study of the Relation between Sediment Characteristics and Multiphase Flow to the Presence of Sediment Oxygen Demand (SOD) in Open Channels

Dwinandha

Tomo

2018

MATEC Web Conf.

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Abstract.A laboratory study was conducted with the aim to determine the correlation between sediment characteristics and multiphase flow analysis of carrier fluid to the presence of SOD. Six sediment samples were tested on their physical and chemical characteristics along with particle size distribution of sediments to find the indication of oxygen consumption and to classify the soil sediment class. For multiphase flow analysis, there were two transition velocities calculated: the transition between a pseudo-homogenous flow and a heterogeneous flow and the limit deposit velocities at the onset of solid particle bed. The SOD test was done in laboratory-scale by using a 600-mL reactor. According to tests, the amount of organic carbon content (TOC) in the samples were ranging from 34.58 to 81.27%, with the sediments' textures categorised as silt loam, silty clay loam, and sand. In the channels, heterogeneous flow occurred in two channel segments, while the other segments' regime was classified as homogeneous flow. The obtained SOD values were varied from 0.2427 to 0.8487 g/m2/day with K3 values obtained ranged from 8.6537 to 12.4028 m-1. Based on all analysis, the organic characteristic of sediment holds a key role in the presence of SOD value.

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“…Dollar et al (1991) Ossterschelde/Netherlands 1.57 Hofman et al (1991) Chesapeake Bay/USA 0-1.64 Kemp et al (1992) Hiroshima Bay/Japan 0.1-0.61 Seiki et al (1994) Albufera, Majoeca/Spain 0.52-1.55 Lopez et al (1995) Chesapeake Bay/USA 0.33-0.85 Reay et al (1995) Shing-Mun River/Hong Kong 6.84 (maximum) Chen et al (2000) Tidal Figure 7 presents the comparison between the model results and field measurements of the DO distribution from the slackwater survey of July 20, 2004 during the low flow condition. It shows the simulated results of the daily average DO concentration at the surface and bottom layers.…”

Section: Resultsmentioning

confidence: 98%

Monitoring sediment oxygen demand for assessment of dissolved oxygen distribution in river

Liu

Chen

2011

Environ Monit Assess

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Sediment oxygen demand (SOD) has become an integral part of modeling dissolved oxygen (DO) within surface water bodies. Because very few data on SOD are available, it is common for modeler to take SOD values from literature for use within DO models. SOD is such an important parameter in modeling DO that this approach may lead to erroneous results. This paper reported on developing an approach for monitoring sediment oxygen demand conducted with undisturbed sediment core samples, where the measured results were incorporated into a water quality model for simulating and assessing dissolved oxygen distribution in the Xindian River of northern Taiwan. The measured results indicate that a higher freshwater discharge results in a lower SOD. Throughout a 1-year observation in 2004, the measured SOD ranged from 0.367 to 1.246 g/m(2)/day at the temperature of 20°C. The mean values of the measured SOD at each station were adopted in a vertical two-dimensional water quality model to simulate the DO distribution along the Xindian River. The simulating results accurately depict the field-measured DO distribution during the low and high flow conditions. Model sensitivity analyses were also conducted with increasing and decreasing SOD values for the low and high flow conditions and revealed that SOD had a significant impact on the DO distribution along the Xindian River. The present work combined with field measurements and numerical simulation should assist in river water quality management.

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Sediment oxygen demand in Hiroshima Bay

Cited by 53 publications

References 27 publications

Benthic metabolism and degradation of natural particulate organic matter in carbonate and silicate reef sands of the northern Red Sea

Benthic metabolism and degradation of natural particulate organic matter in carbonate and silicate reef sands of the northern Red Sea

Study of the Relation between Sediment Characteristics and Multiphase Flow to the Presence of Sediment Oxygen Demand (SOD) in Open Channels

Monitoring sediment oxygen demand for assessment of dissolved oxygen distribution in river

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