Benthic Respiration and Heavy Metal Benthic Fluxes in Artificial Shihwa Lake: Approaching In Situ Measurement

被引：2

作者：

Cho, Yu-Hyeon ^{[1
,2
]}

Baek, Ju-Wook ^{[1
,2
]}

An, Sung-Uk ^{[1
]}

Yoo, Hyun-Ju ^{[3
]}

Baek, Hyun-Min ^{[1
]}

Choi, Jin Young ^{[1
,2
]}

Kim, Tae Ha ^{[3
]}

Kim, Kyung-Tae ^{[1
]}

Lee, Jae Seong ^{[1
,2
]}

Kim, Sung-Han ^{[1
,2
]}

机构：

[1] Korea Inst Ocean Sci & Technol, Marine Environm Res Dept, Busan 49111, South Korea

[2] Ocean Sci & Technol Sch, Dept Convergence Study Ocean Sci & Technol, Busan 49111, South Korea

[3] Geosyst Res Corp, Dept Environm Ecol, Gunpo 15807, South Korea

来源：

JOURNAL OF MARINE SCIENCE AND ENGINEERING | 2023年 / 11卷 / 11期

关键词：

sediment oxygen demand; benthic nutrient flux; benthic-pelagic coupling; heavy metal benthic flux; artificial Shihwa Lake; YEONGSAN RIVER ESTUARY; TRACE-METALS; SULFATE REDUCTION; NUTRIENT REGENERATION; OXYGEN-CONSUMPTION; CONTINENTAL-SHELF; EARLY DIAGENESIS; COASTAL WATERS; ORGANIC-MATTER; CORE SEDIMENTS;

D O I：

10.3390/jmse11112186

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

This study assessed the impact of intensive human activities on organic matter (OM) and heavy metal cycles in Shihwa Lake, South Korea. Sediment oxygen demand (SOD), benthic nutrient flux (BNF), and benthic heavy metal flux were estimated using in situ benthic chambers. The combined analysis of sediment trap and SOD showed that the vertical supply of OM was a major controlling factor for benthic respiration. The BNF accounted for 35-144% and 32-184% of the N and P required, respectively, for primary production (PP) in the water column. The higher SOD may have also accelerated the release of Mn, Fe, Co, and Ni from the sediment. Benthic fluxes of Cr, As, Cd, Pb, Cu, and Zn were highest near the industrial complex, with ranges of 1.3 +/- 0.9, 6.4 +/- 4.9, 0.2 +/- 0.1, 0.5 +/- 0.4, 7.7 +/- 1.4, and 452 +/- 133 mu mol m-2 d-1, respectively. Mn, Fe, Co, As, Pb, Ni, and Cu contributed more than 10% of the sediment to the current standing stock at Shihwa Lake.

引用

页数：17

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