Biodiversity Science ›› 2000, Vol. 08 ›› Issue (1): 65-72.doi: 10.17520/biods.2000009

• 论文 • Previous Article     Next Article

Variations in community structure of fishery resources and biodiversity in the Laizhou Bay, Shandong

JINXian-Shi, DENG Jing-Yao   

  1. Yellow Sea Fisheries Research Institute , Chinese Academy of Fishery Sciences , Qingdao 266071
  • Received:1999-04-14 Revised:1999-08-05 Online:2000-02-20

Based on seasonal bottom trawl surveys from 1959 to 1999 , the variations in fishery resources , dominant species composition and community structure were analyzed. The results indicate that the biomass has continuously declined from 1959. The current biomass account for only 3. 3 % , 7. 3 % and 11. 0 % of that in 1959 , 1982 and 1992~1993 , respectively. Although dominant species vary in different seasons , the traditional large- sized demersal species , such as largehead hairtail ( Trichiurus haumela) and small yellow croaker ( Pseudosciaena polyactis) , have been replaced by small pelagic species , such as anchovy ( Engraulis japonicus) , half-financhovy ( Setipinna taty ) , gizzard- shad ( Clupanodon punctatus ) , and rednose anchovy ( Thrissa kammalensis) . The community structure has also changed , while species diversity increased from 1959 to 1982 and then decreased continuously. The disturbance , particularly fishing , may increase the diversity at intermediate intensity , but too high fishing intensity may lead to diversity decrease. At present , the community structure is simple at un-equilibrium state in the Laizhou Bay , the community succession will continue , and the biomass of small pelagic species with high resilience may recover and increase if the disturbance is significantly reduced.

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] Jianhui Chen, Ronghua Li, Peiguo Guo, Yanshi Xia, Changen Tian, Shenyu Miao. Impact of Drought Stress on the Ultrastructure of Leaf Cells in Three Barley Genotypes Differing in Level of Drought Tolerance[J]. Chin Bull Bot, 2011, 46(1): 28 -36 .
[2] CHEN Xue-Mei;MIAO Shen-Yu;LUO Zhi-Rongand XU Yan-Hui. Studies on Mangrove at Daya Bay Part One:Mangrove Communities at Aotou Port[J]. Chin Bull Bot, 1998, 15(04): 55 -58 .
[3] Xu Chang-cheng;Fan Ji-lian and Zou Qi. Changes of Lipid Composition in Root Cell Membranes of Winter Wheat Seedlings Under Drought Stress[J]. Chin Bull Bot, 1996, 13(02): 21 -24 .
[4] Juan Gao, Ying Zeng, Shan Lu. Research Progress in Aromatic Prenyltransferases[J]. Chin Bull Bot, 2010, 45(06): 751 -759 .
[5] Yang Shi-jie and Zhang Shu-qiu. Secondary Formation and Modification of Plasmodesmata[J]. Chin Bull Bot, 1989, 6(03): 129 -135 .
[6] Li Jiu-di and An Qian-li. Advances in Associated Nitrogen Fixation Research[J]. Chin Bull Bot, 1997, 14(03): 14 -21 .
[7] . [J]. Chin Bull Bot, 1996, 13(专辑): 105 .
[8] Zhihua Huang;Qingzhong Xue. Composition and Distribution of Pseudogenes and Their Molecular Evolution[J]. Chin Bull Bot, 2006, 23(4): 402 -408 .
[9] Wang Yong;Tang Zhao-da and Lu Xian-yu. Stdies on the Relationship between ABA and the Apical Dominance of Sunflower Plants[J]. Chin Bull Bot, 1989, 6(04): 222 -225 .
[10] Zhang Guowen. Preparation of Aminoethyl Gums from the Seeds of Crotalaria mucronata Desv. and Sesbania cannabina (Reiz.) Pers[J]. Chin Bull Bot, 1986, 4(12): 42 -45 .