Volume 14 Issue 3
May  2018
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YU Jing, HU Qiwei, YUAN Huarong, CHEN Pimao. Effect assessment of summer fishing moratorium in Daya Bay based on remote sensing data[J]. South China Fisheries Science, 2018, 14(3): 1-9. DOI: 10.3969/j.issn.2095−0780.2018.03.001
Citation: YU Jing, HU Qiwei, YUAN Huarong, CHEN Pimao. Effect assessment of summer fishing moratorium in Daya Bay based on remote sensing data[J]. South China Fisheries Science, 2018, 14(3): 1-9. DOI: 10.3969/j.issn.2095−0780.2018.03.001
shu

Effect assessment of summer fishing moratorium in Daya Bay based on remote sensing data

  • 1.

    Guangdong Provincial Key Laboratory of Fishery Ecology and Environment; Scientific Observing and Experimental Station of South China Sea Fishery Resources and Environment, Ministry of Agriculture; Key Laboratory of Marine Ranching Technology, Chinese Academy of Fishery Sciences; South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China

  • 2.

    College of Marine Science, Shanghai Ocean University, Shanghai 201306, China

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  • Received Date: September 12, 2017
  • Revised Date: January 26, 2018
  • Available Online: January 07, 2019
    Graphical Abstract
    • Abstract
  • Based on the data of satellite remote sensing and trawl surveys, we analyzed the variation in sea surface temperature (SST), chlorophyll a (Chl-a) concentration, catch per unit effort (CPUE) of total catch, biodiversity, species composition, body length and mass of total catch during the pre-SFM (May in 2015) and post-SFM (August in 2015) in Daya Bay, to assess the maintenance effect of summer fishing moratorium (SFM) in that area. Results show that the major variation range of CPUE increased from 0−10 kg·h–1 in the pre-SFM to 0−40 kg·h–1 in the post-SFM. The average body length and mass increased, indicating that the growth rate of total catch accelerated. In the post-SFM, the indices of Shannon-Wiener and Pielou increased by 0.36 and 0.14, respectively, which shows that the community structure was improved. The biomass spectra of the fishery resource community shows that the slopes of normalized biomass spectra in the post-SFM was over –1, and the biomass of fishery resources increased with the increase of the individual body mass in the post-SFM. SFM alleviated the fishing intensity, recovered and conserved the fishery resources in Daya Bay. In order to improve the SFM system and promote sustainable development of coastal fishery resources, it is suggested to prolong the time of SFM appropriately, reduce the number of coastal fishing boats, and enforce the conservation of fish resources.
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