Sediment oxygen consumption in semi-closed Korean coastal bays during summer

Lee, Jae Seong; Kim, Seong‐Gil; Kim, Seong-Su; An, Shuqing; Kim, Yeong-Tae; Choi, Ok-In

doi:10.1007/s12601-009-0014-3

Cited by 12 publications

(2 citation statements)

References 32 publications

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“…Indeed, the TOC contents at the FF and OF sites are similar to the values obtained at other fish and shellfish farms [40,41]. Furthermore, the SODs are comparable to those reported from eutrophic farms [42,43], and those are one order higher than the coastal sediment of the South Sea of Korea [44].…”

Section: Sediment Oxygen Demandsupporting

confidence: 81%

Aquaculture Farming Effect on Benthic Respiration and Nutrient Flux in Semi-Enclosed Coastal Waters of Korea

Kim

Lee

Kim

et al. 2021

JMSE

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Sediment oxygen demand (SOD) and benthic nutrient fluxes (BNFs) were measured using an in situ benthic chamber at a fish farm (FF), oyster farm (OF), and controls (FF-C and OF-C) to assess the impact of aquaculture activities on organic carbon (OC) and nutrients cycles in coastal waters of Korea. The SOD at FF and OF ranged from 60 ± 2 to 157 ± 3 mmol m–2 d–1 and from 77 ± 14 to 84 ± 16 mmol m–2 d–1, respectively, more than five times those of the control sites. The SOD at farm sites is highly correlated with fish stock and food input, suggesting that excess feed input is an important control factor for OC remineralization. The combined analysis of sediment trap and SOD indicates that most of the deposited OC oxidized in the sediment and/or was laterally transported by the current before being buried in the sediment. The benthic nutrient fluxes at farms ranged from 5.45 to 8.95 mmol N m–2 d–1 for nitrogen and from 0.51 to 1.67 mmol P m–2 d–1 for phosphate, respectively, accounting for 37–270% and 52–804% of the N and P required for primary production in the water column. These results indicate that aquaculture farming may profoundly impact biogeochemical cycles in coastal waters.

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Section: Sediment Oxygen Demandsupporting

confidence: 81%

Aquaculture Farming Effect on Benthic Respiration and Nutrient Flux in Semi-Enclosed Coastal Waters of Korea

Kim

Lee

Kim

et al. 2021

JMSE

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“…These results suggest the importance of benthic nutrient regeneration in maintaining primary production in these regions. Lee et al (2009) reported that about 40% of organic carbon produced by pelagic primary production was mineralized onto surface sediments in 11 semi-enclosed South Sea of Korea coastal bays in summer. If organic carbon degrades at the same ratio as Redfield, our estimated benthic fluxes are much higher than the expected results.…”

Section: Fig 7 Dissolved Nutrient Concentration Variation Over Time mentioning

confidence: 99%

Benthic nutrient fluxes at longline sea squirt and oyster aquaculture farms and their role in coastal ecosystems

et al. 2011

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To assess the impact of aquaculture activities, we measured the primary production, total sediment oxygen consumption, and benthic nutrient flux at two aquaculture farms (sea squirt and oyster) and one reference site. The estimated primary production in the water column ranged from 19-169 mmol C m -2 d -1 . Total sediment oxygen consumption rates ranged from 58 to 328 mmol m -2 d -1 , 1.1 to 40 mmol m -2 d -1 for nitrogen, 0.17 to 3.0 mmol m -2 d -1 for phosphate, and 7.3 to 74 mmol m -2 d -1 for silicate. The average total sediment oxygen consumption at the longline farms was [2.5 times higher than the reference site. Nitrate was significantly removed by denitrification at the longline farms in July and September and ranged from -5.4 to -0.09 mmol m -2 d -1 , which is higher than for other coastal sediments. The benthic fluxes of nitrogen and phosphate at longline farms were up to 16 and six times higher than at the reference site, respectively. The average nitrogen requirements of the primary producers were 9.3 mmol m -2 d -1 at the sea squirt farm, 7.0 mmol m -2 d -1 at the oyster farm, and 13.5 mmol m -2 d -1 at the reference site, corresponding to 88, 316, and 27.2% of the nitrogen supplied by benthic fluxes, respectively. Our results suggest that benthic nutrient fluxes at longline farms are a major nutrient source for primary production in coastal waters.

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Development and application of a novel miniature in situ microprofiler (NAFRI BelpI)

et al. 2012

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Sediment oxygen consumption in semi-closed Korean coastal bays during summer

Cited by 12 publications

References 32 publications

Aquaculture Farming Effect on Benthic Respiration and Nutrient Flux in Semi-Enclosed Coastal Waters of Korea

Aquaculture Farming Effect on Benthic Respiration and Nutrient Flux in Semi-Enclosed Coastal Waters of Korea

Benthic nutrient fluxes at longline sea squirt and oyster aquaculture farms and their role in coastal ecosystems

Development and application of a novel miniature in situ microprofiler (NAFRI BelpI)

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