sanggou bay
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Fishes ◽  
2021 ◽  
Vol 6 (4) ◽  
pp. 53
Author(s):  
Yi Liu ◽  
Xinmeng Wang ◽  
Wenguang Wu ◽  
Jun Yang ◽  
Ningning Wu ◽  
...  

The shellfish–algae mode of integrated multitrophic aquaculture (IMTA) is a sustainable aquaculture method that benefits the environment and the carbon cycle. However, most current shellfish–algae aquaculture modes are based on the expansion of kelp aquaculture. Due to the low tolerance of kelp to high temperatures, integrated shellfish–algae aquaculture areas often become shellfish monocultures in summer, which may lead to both high mortality rate of shellfish and to economic loss while causing serious environmental harm via eutrophication, decreases in dissolved oxygen (DO), and decreases in pH. In this study, we investigated the effects of different ratios of seaweed (Gracilaria lemaneiformis), which is tolerant of high temperatures, to Japanese scallop (Patinopecten yessoensis) on water quality and environmental parameters. A two-day small-scale enclosure water body experiment was conducted in Sanggou Bay (Shandong, China) in August 2019. The results demonstrated that culturing shellfish alone significantly affected pH, DO, eutrophication, and other environmental indicators, as well as the carbonate system. The negative environmental impact of the shellfish–algae aquaculture system was much smaller. However, too high a proportion of algae might consume excessive amounts of dissolved inorganic nitrogen (DIN) and nutrients, while too low a proportion of algae might not fully absorb the nutrients released by the cultured shellfish, in turn leading to an increased risk of eutrophication. The shellfish–algae aquaculture system not only improved the inorganic carbon system, but also the organic carbon system. At the end of the experiment, all the parameters of the inorganic carbon system had decreased significantly, while all the parameters of the organic carbon system had increased significantly. The results of this study illustrate the need to include macroalgae rotations in summer, and that an appropriate ratio of shellfish to algae is necessary to achieve a sustainable aquaculture system. Moreover, this research has also confirmed the importance of the future and related research in the actual production, which will provide useful information to guide governmental strategies for summer aquaculture rotations and insight into the controversy concerning whether aquaculture is a carbon source or sink.


2021 ◽  
Vol 753 ◽  
pp. 142065
Author(s):  
Jiaqi Li ◽  
Wenwen Zhang ◽  
Jingkun Ding ◽  
Suyan Xue ◽  
Enze Huo ◽  
...  

2021 ◽  
Vol 162 ◽  
pp. 111899
Author(s):  
Bin Xia ◽  
Qi Sui ◽  
Xuemei Sun ◽  
Lin Zhu ◽  
Rongyuan Wang ◽  
...  
Keyword(s):  

2020 ◽  
Vol 431 ◽  
pp. 109181 ◽  
Author(s):  
L.I.N. Fan ◽  
D.U. Meirong ◽  
L.I.U. Hui ◽  
F.A.N.G. Jianguang ◽  
ASPLIN Lars ◽  
...  

2020 ◽  
Vol 28 (5) ◽  
pp. 2059-2079
Author(s):  
Yaping Gao ◽  
Jianguang Fang ◽  
Fan Lin ◽  
Fengxue Li ◽  
Wenhao Li ◽  
...  

2020 ◽  
Vol 16 ◽  
pp. 100279 ◽  
Author(s):  
Long-qi Sun ◽  
Hui Liu ◽  
Ya-ping Gao ◽  
Zeng-jie Jiang ◽  
Fan Lin ◽  
...  

2019 ◽  
Vol 38 (6) ◽  
pp. 1914-1924 ◽  
Author(s):  
Jinghui Fang ◽  
Jianguang Fang ◽  
Qionglin Chen ◽  
Yuze Mao ◽  
Zengjie Jiang ◽  
...  

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