Effects of intensive scallop mariculture on macrobenthic assemblages in Sishili Bay, the northern Yellow Sea of China

Han, Qingxi; Wang, Yueqi; Zhang, Yong; Keesing, John K.; Liu, Dongyan

doi:10.1007/s10750-013-1590-x

Cited by 25 publications

(10 citation statements)

References 41 publications

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“…When downward diffusion of oxygen and upward release of CO 2 are hampered by the pycnocline, a coupled trend of bottom oxygen depletion and acidification will occur (Zhai et al, 2012), making much worse the negative effects on coastal ecosystems (Mostofa et al, 2016). These changes are likely to be the greatest in the aquaculture area because of increasing nutrient loadings (Li et al, 2016(Li et al, , 2017 and decreasing water exchange rate (Gao et al, 2011;Han et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Origin and Dynamics of Dissolved Organic Matter in a Mariculture Area Suffering From Summertime Hypoxia and Acidification

et al. 2018

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Based on six cruises from March to September in 2016, we investigated monthly distributions of dissolved organic matter (DOM) and ancillary water chemistry parameters in a mariculture area in the Northern Yellow Sea, where summertime hypoxia and seawater acidification were observed. The most severe oxygen depletion (hypoxia covered approximately one-third of the aquaculture area) and the largest pH decrease (8.07 ± 0.05 in surface layer vs. 7.66 ± 0.07 in bottom layer) were revealed in August. Concentration of dissolved organic carbon (DOC) and the absorption properties of chromophoric DOM (CDOM) were used to characterize DOM. Results showed that DOM mainly originated from marine in situ processes. In March, a DOM pool with the lowest DOC concentration of 211 ± 23 µmol L −1 and nearly uniform optical characteristics were presented in the well-mixed water column. In August, however, DOC increased to 361 ± 29 µmol L −1 in the surface layer and 342 ± 25 µmol L −1 in the bottom layer. Two non-linear relationships between the absorption coefficient at 355 nm [a CDOM (355)] and the absorption spectral slope over 275-295 nm (S 275−295) were revealed. According to modeling results, the non-linear relationships were mostly caused by the conservative mixing of a refractory CDOM pool with a freshly produced CDOM pool. Apparent oxygen utilization in August was positively related to DOC, but not to a CDOM (355) and S 275−295 , presumably due to multiple sources of CDOM in bottom waters. Both a CDOM (355) and S 275−295 respond largely to decreasing pH; however, they would be less affected by ocean acidification since this process leads to a limited pH decline.

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Section: Introductionmentioning

confidence: 99%

Origin and Dynamics of Dissolved Organic Matter in a Mariculture Area Suffering From Summertime Hypoxia and Acidification

et al. 2018

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“…The dominant polychaete L. latreilli is a very common carnivore in the northern Yellow Sea and the Bohai Sea. They construct semi-permanent burrows, from which they selectively feed upon small particles of subsurface deposits, microfauna, meiofauna and macrofauna (Watson et al ., 1984; Petch, 1986; Renaud et al ., 2007; MacDonald et al ., 2010; Han et al ., 2013). The worm L. latreilli was unrelated to TOC and not susceptible to the organic matter content (Han et al ., 2013), but it was significantly positively correlated to the content of coarse silt ( P < 0.01).…”

Section: Resultsmentioning

confidence: 99%

“…The results showed that the polychaete community and the feeding guilds exhibited significant spatial and temporal differences. This conclusion coincided with the previous study derived from the analysis of the macrobenthic community that macrobenthic communities can be significantly affected by the sampling months and transects (Han et al ., 2013).…”

Section: Discussionmentioning

confidence: 99%

The polychaete feeding guild composition in the Sishili Bay, the northern Yellow Sea, China

Han

Jiang

Wang³

2015

J. Mar. Biol. Ass.

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In this research, the feeding guild composition of the polychaete community was described and analysed in the northern Yellow Sea, China. The polychaete feeding guilds also showed a distinct seasonal abundance fluctuation that was similar to that observed for macrofauna. Burrowers were the most predominant feeding guild, whereas filter feeders and herbivores only constituted a negligible proportion of the total abundance. A Spearman rank correlation was performed to analyse the relationships between the feeding guilds and the environmental parameters. Surface deposit feeders and carnivores appeared to be vulnerable to variations of environmental conditions. However, burrowers and filter feeders were not susceptible to the natural or anthropogenic disturbances, with grain size determined to be the only conclusive factor. These results revealed that the feeding guild of polychaetes showed significant spatial and temporal changes, and spatial heterogeneity was a stronger predictor than temporal variation. The feeding guilds of polychaetes can be applied alone to discern the environmental change, which would be faster and more cost-effective with best equilibrium between the precision of the results and a decrease in taxonomic effort. Furthermore, bimonthly sampling was proved to be unessential and reduction of the sampling frequency was necessary to save expense and effort.

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“…Research in China has shown that suspended aquaculture systems can cause changes to surrounding ecological communities by significantly altering benthic, microbial, planktonic, and fish community dynamics (e.g., Jiang et al 2012;Han et al 2013a;Lu et al 2015;Zhao et al 2016).…”

Section: Ecological Impactsmentioning

confidence: 99%

The impacts of suspended mariculture on coastal zones in China and the scope for Integrated Multi-Trophic Aquaculture

Wartenberg

Feng

et al. 2017

Ecosyst Health Sustain

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Introduction: China is responsible for more than 60\% of global aquaculture production. As the frontiers of food production have expanded, the cultivation of marine organisms in coastal zones and the open ocean has grown rapidly. The dominant mariculture industry in China is suspended mariculture, which uses net cages, ropes, or other structures suspended in the water column to cultivate aquatic organisms. This systematic, quantitative review provides a clear and comprehensive account of research that has investigated the adverse impacts of suspended mariculture in China and reviews research that has applied Integrated Multi-Trophic Aquaculture (IMTA) systems for mitigating impacts. This work builds on 218 peer reviewed papers that have been published in English-language journals. Outcomes: Eighteen impacts were identified, including chemical, ecological, physical, and socioeconomic impacts. Eighteen measures for improving suspended mariculture were recommended consisting of government department, farm management, and ecological engineering measures. IMTA was the most frequently recommended measure. The capabilities of IMTA for bioremediation and increased farm production were the most frequently studied advantages. Seven other benefits have been explored but remain understudied. The current challenges facing the expansion of commercial IMTA include limited use of new technology, limited skills development, decreasing production of low trophic-level species, biogeographic and temporal barriers, and negative system feedbacks. Conclusion: Despite challenges, implementing commercial IMTA is a promising measure for reducing the impacts of suspended mariculture because it presents a range of secondary benefits that can improve the overall sustainability of aquaculture in the coastal zone

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Effects of intensive scallop mariculture on macrobenthic assemblages in Sishili Bay, the northern Yellow Sea of China

Cited by 25 publications

References 41 publications

Origin and Dynamics of Dissolved Organic Matter in a Mariculture Area Suffering From Summertime Hypoxia and Acidification

Origin and Dynamics of Dissolved Organic Matter in a Mariculture Area Suffering From Summertime Hypoxia and Acidification

The polychaete feeding guild composition in the Sishili Bay, the northern Yellow Sea, China

The impacts of suspended mariculture on coastal zones in China and the scope for Integrated Multi-Trophic Aquaculture

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