Effects of abalone (Haliotis discus hannai Ino) and kelp (Saccharina japonica) mariculture on sources, distribution, and preservation of sedimentary organic carbon in Ailian Bay, China: Identified by coupling stable isotopes (δ13C and δ15N) with C/N ratio analyses

Pan, Zhe; Gao, Qinfeng; Dong, Shuanglin; Wang, Fang; Li, Haidong; Zhao, Kun; Jiang, Xuyang

doi:10.1016/j.marpolbul.2019.02.053

Cited by 32 publications

(16 citation statements)

References 59 publications

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“…This indicated a mix of terrestrial and marine sources for the SOM in ZJB. Compared with the other areas listed in Table 4, the δ 13 C values in ZJB obtained in this study were comparable to those of the Pearl River Estuary [18], the Changjiang Estuary [68,69,81], the coastal Bohai Bay area [9], and the Washington continental shelf [70], but lower than those of Ailian Bay [15], Zheling Bay [40], the East China Sea shelf [63], and coastal areas of the East China Sea [67] (Table 4). Table 2 shows the average δ 13 C values of the different subregions.…”

Section: Environmental Indications Of δ 13 Csupporting

confidence: 65%

“…In general, the surface sediment in the channel had the finest grain size, with sand contributing the least to the surface sediment ( Table 2). Large-scale, cage-based mariculture in the channel may be responsible for this phenomenon, because mariculture can weaken the hydrodynamic conditions and contribute to the settlement of fine particles [15,22,41,51]. Obvious seasonal variations of the grain size fractions were observed in the channel and the coastal bay ( Table 2).…”

Section: Grain Sizementioning

confidence: 99%

“…The TN had a similar distribution pattern with the TOC, with the highest value in the channel (0.11% ± 0.06%), an intermediate value in the coastal bay (0.06% ± 0.05%), and the lowest value in the central bay (0.05% ± 0.04%) ( Table 2). Mariculture activities can strongly increase sedimentation rates and decrease hydrodynamic conditions [15,57]. This contributed to the high concentrations of the TOC and TN in the sediments of the channel and coastal bay, where there is greater maricultural activity [41].…”

Section: Toc and Tnmentioning

confidence: 99%

“…Understanding the on stable isotopic signatures and TOC/TN ratios, and found that the inputs of OM from anthropogenic activities had a more significant influence on parameter distributions than natural processes did. Pan et al [15] studied the impacts of mariculture activities on sedimentary organic carbon (SOC) in Ailian Bay, China, by coupling δ 13 C and δ 15 N with TOC/TN ratio analyses. This study found that mariculture activities were a significant source of SOC, and also significantly influenced the distribution and preservation of SOC.…”

Section: Introductionmentioning

confidence: 99%

“…This study found that mariculture activities were a significant source of SOC, and also significantly influenced the distribution and preservation of SOC. However, most prior studies investigating the influence of anthropogenic activities and seasonal environmental variations on SOM have been undertaken in temperate zones [9,14,15,23], and much less is known about subtropical bays. Besides, to our knowledge, the influence of seasonal variations in rainfall on SOM has rarely been documented in previous studies.…”

Section: Introductionmentioning

confidence: 99%

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Spatial and Seasonal Variations of Sedimentary Organic Matter in a Subtropical Bay: Implication for Human Interventions

Lü

Zhou

Chen

et al. 2020

IJERPH

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Elemental (total organic carbon (TOC) and total nitrogen (TN)) and stable carbon and nitrogen isotope compositions (δ13C and δ15N, respectively) in the surface sediment of Zhanjiang Bay (ZJB) in spring and summer were measured to study the spatial and seasonal changes of organic matter (OM) and assess the human-induced and environment-induced changes in the area. The OM in the surface sediment of ZJB was a mixture of terrestrial and marine sources, and was dominated by marine OM (54.9% ± 15.2%). Compared to the central ZJB, the channel and coastal ZJB areas had higher δ13C and δ15N values, higher TOC and TN concentrations, and lower TOC/TN ratios, indicating higher primary productivity and higher percentages of marine OM in the latter two subregions. Mariculture activities, sewage inputs, and dredging were responsible for these phenomena. Clear seasonal variations in OM were observed in ZJB. The average proportions of terrestrial OM in summer increased by 10.2% in the ZJB channel and 26.0% in the coastal ZJB area compared with those in spring. Heavy rainfall brought a large amount of terrestrial OM into the channel and coastal ZJB areas, leading to the increase of the terrestrial OM fraction in these two subregions in summer. In summary, anthropogenic influences had a significant influence on the spatial and seasonal variations of sedimentary OM in ZJB.

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Section: Environmental Indications Of δ 13 Csupporting

confidence: 65%

Section: Grain Sizementioning

confidence: 99%

Section: Toc and Tnmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Spatial and Seasonal Variations of Sedimentary Organic Matter in a Subtropical Bay: Implication for Human Interventions

Lü

Zhou

Chen

et al. 2020

IJERPH

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Variability of biochemical compounds in surface sediments along the eastern margin of the Arabian Sea

Khodse

Amberkar

Khandeparker

et al. 2023

Environ Monit Assess

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Differences in the composition, source, and stability of suspended particulate matter and sediment organic matter in Hulun Lake, China

Wang

Chen

Wang

et al. 2022

Environ Sci Pollut Res

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Sediment (SOM) and suspended particulate (SPOM) organic matters are two important organic matters in water. Their occurrence, migration and transformation, and stability have important effects on the environmental behaviors of carbon, nitrogen, phosphorus, and other pollutants in a water environment. The content, composition, fluorescence characteristics, source, and stability of SOM and SPOM in Hulun Lake, a typical lake in cold and arid region of China, were compared by sequential extraction, three-dimensional fluorescence spectroscopy, parallel factor technique, carbon-nitrogen ratio, and stable carbon isotope. SOM and SPOM in north and west were higher than those in east and south. The average content of SPOM (24.70 ± 4.63 g/kg) was slightly higher than that of SOM (23.04 ± 10.27 g/kg), but the difference was not significant. Humin was the dominant component in SOM and SPOM, accounting for 73.7% and 61.2%, respectively. Humus was the main fluorescence component of water-extractable organic matter in SOM and SPOM, accounting for 79.9% and 70.4%, respectively, of the total fluorescence intensity. SOM and SPOM were derived from terrestrial sources with relative contribution rate of about 70%. SPOM was more influenced by autochthonous sources and had significantly lower humification degree and stability than SOM. Effects of climate changes on migration, transformation, stability, and bioavailability of organic matters and endogenous pollutants closely related to organic matters in lakes of cold and arid regions should be paid attention in the future.

show abstract

Effects of abalone (Haliotis discus hannai Ino) and kelp (Saccharina japonica) mariculture on sources, distribution, and preservation of sedimentary organic carbon in Ailian Bay, China: Identified by coupling stable isotopes (δ13C and δ15N) with C/N ratio analyses

Cited by 32 publications

References 59 publications

Spatial and Seasonal Variations of Sedimentary Organic Matter in a Subtropical Bay: Implication for Human Interventions

Spatial and Seasonal Variations of Sedimentary Organic Matter in a Subtropical Bay: Implication for Human Interventions

Variability of biochemical compounds in surface sediments along the eastern margin of the Arabian Sea

Differences in the composition, source, and stability of suspended particulate matter and sediment organic matter in Hulun Lake, China

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