您好，欢迎访问中国水产科学研究院 机构知识库！
中国水产科学研究院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Long-term changes in the fishery ecosystem structure of Laizhou Bay, China

文献类型： 外文期刊

作者： Jin XianShi 1 ; Shan XiuJuan 1 ; Li XianSen 1 ; Wang Jun 2 ; Cui Yi 2 ; Zuo Tao 2 ;

作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Minist Agr, Key Lab Sustainable Utilizat Marine Fisheries, Qingdao 266071, Peoples R China

2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Key Lab Fishery Resources & Ecoenvironm, Qingdao 266071, Shandong, Peoples R China

关键词： long-term changes;fishery ecosystem;multi-stress;Laizhou Bay

期刊名称：SCIENCE CHINA-EARTH SCIENCES （ 影响因子：4.368； 五年影响因子：3.814 ）

ISSN： 1674-7313

年卷期： 2013 年 56 卷 3 期

页码：

收录情况： SCI

摘要： Laizhou Bay provides a critical spawning and nursery habitat for many fishery species, including commercially important species, such as Fenneropenaeus chinensis and Larimichthys polyactis. The bay is severely stressed due to high fishing pressure and environmental changes. Based on the long-term ecosystem surveys in Laizhou Bay during the main spawning period (May) of most fishery species from 1959 to 2008, the responses of the Laizhou Bay fishery ecosystem were analyzed here, including regime shifts in species composition, biomass, species diversity, zooplankton, phytoplankton, and environmental variables. The dominant species of large-size and high economic value (e.g. Trichiurus haumela, L. polyactis) have been replaced by the short-lived, low-trophic-level planktivorous pelagic species (e.g. Setipinna taty, Engraulis japonicus) since the 1980s, and it is probable that the small-sized pelagic fishes have been recently replaced by invertebrates (e.g. Oratosquilla oratoria, Crangon affinis). The biomass of fishery resources declined continuously from 423.6 kg haul(-1) h(-1) in 1959 to 164.6 kg haul(-1) h(-1) in 1982, 37.7 kg haul(-1) h(-1) in 1993, and less than 8 kg haul(-1) h(-1) in 1998-2008. Moreover, the biomass of zooplankton showed an increasing trend during 1959-2006, but showed a slight decline in 2008. The abundance of phytoplankton increased from 1959 through 1982, decreased substantially in 1993, and increased again until 2004. More recently, however, the phytoplankton abundance was very low. The sea surface temperature (SST) and sea bottom temperature (SBT) in May increased by 0.23A degrees C a(-1) and 0.16A degrees C a(-1), respectively, during 1982-2008. The salinity in May showed large fluctuations and reached its lowest values in 2004 and 2006. The ratio of dissolved inorganic nitrogen (DIN) to dissolved inorganic phosphate (DIP) increased. However, the dissolved silicon (DSi):DIP and DSi:DIN ratios decreased to a low level during 1959-2008. These changes seriously impacted primary production, and cascade effects then changed the structure and function of the fishery ecosystem. Further analysis indicated that multiple stresses caused the alterations in the structure of the Laizhou Bay fishery ecosystem. The top-down effect was identified as the main influence on the fishery species (at the top of the food chain) over the past five decades due to the increasing fishing pressure, whereas the bottom-up effect increased over the past three decades due to the strong variations in the environment.

  • 相关文献

[1]Burial fluxes and sources of organic carbon in sediments of the central Yellow Sea mud area over the past 200 years. Yang Shu,Yang Qian,Liu Sai,Cai Deling,Qu Keming,Sun Yao. 2015

[2]Zinc and copper bioaccumulation in fish from Laizhou Bay, the Bohai Sea. Liu Jinhu,Cao Liang,Dou Shuozeng,Liu Jinhu,Huang Wei,Zhang Chuantao. 2014

[3]Monthly Variation in Crustacean Assemblage (Decapod and Stomatopod) and Its Relationships with Environmental Variables in Laizhou Bay, China. Wu Qiang,Wu Qiang,Wang Jun,Zhang Bo,Chen Ruisheng,Jin Xianshi,Wang Jun,Zhang Bo,Jin Xianshi. 2016

[4]Study on limiting nutrients and phytoplankton at long-line-culture areas in Laizhou Bay and Sanggou Bay, northeastern China. Liu, H,Fang, JG,Zhu, JX,Dong, SL,Wang, F,Liang, XM,Zhang, JH,Lian, Y,Wang, LC,Jiang, WW. 2004

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国水产科学研究院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台