TAN Xi chang, XIA Li qi, Kenichi TATSUKAWA, XIE Ping, CHANG Jian bo. HYDROACOUSTIC SURVEYS ON TEMPORAL AND SPATIAL DISTRIBUTIONS OF STOCKED CARPS IN THE EAST LAKE[J]. ACTA HYDROBIOLOGICA SINICA, 2002, 26(6): 585-590.
Citation:
TAN Xi chang, XIA Li qi, Kenichi TATSUKAWA, XIE Ping, CHANG Jian bo. HYDROACOUSTIC SURVEYS ON TEMPORAL AND SPATIAL DISTRIBUTIONS OF STOCKED CARPS IN THE EAST LAKE[J]. ACTA HYDROBIOLOGICA SINICA, 2002, 26(6): 585-590.
TAN Xi chang, XIA Li qi, Kenichi TATSUKAWA, XIE Ping, CHANG Jian bo. HYDROACOUSTIC SURVEYS ON TEMPORAL AND SPATIAL DISTRIBUTIONS OF STOCKED CARPS IN THE EAST LAKE[J]. ACTA HYDROBIOLOGICA SINICA, 2002, 26(6): 585-590.
Citation:
TAN Xi chang, XIA Li qi, Kenichi TATSUKAWA, XIE Ping, CHANG Jian bo. HYDROACOUSTIC SURVEYS ON TEMPORAL AND SPATIAL DISTRIBUTIONS OF STOCKED CARPS IN THE EAST LAKE[J]. ACTA HYDROBIOLOGICA SINICA, 2002, 26(6): 585-590.
The temporal and spatial distributions of atrificial stocked carps in the East Lake were inverstigated with an echo sounder in 2000. The transducer was set horizontally and vertically to got fish echoes from surface (depth less than 1.5m) and middle bottom (depth from more than 1 5m to the bottom) water layers, respectively. Surveys both for surface and middle bottom water layers were undertaken once monthly along the same route. Statistics on fish densities were carried out separately by dividing the survey route into 114 units, which one unit was 100 meters in length. The fish preferred middle bottom to surface water layer in the East Lake. Average of density fish in middle bottom (0.0474 ind/m3) was much higher than that in surface (0.0069ind/m3), and significant difference between the two water layers was observed (T-test, P0.001). Meanwhile, significantly differences in fish densities were also observed horizontally within the 114 statistical units both in surface (F=1 62,P0.001) and middle bottom (F=2.11,P0.001). The spatial variations of horizontal distribution in fish densities in the East Lake might be caused mainly by aggregation activity of fish, water temperature, and sewage discharge. However, no significant correlation was found between the aggregation activity of fish and water depth, or distances from the sampling sites to the shores.
刘建康. 东湖生态学研究(二)[M]. 北京:科学出版社,1995,1-25[2] 立川贤一、朱志荣、三浦泰藏. 用浅水湖泊型鱼探仪估算东湖鱼群数量[J]. 水生生物学报,1986,10(4):311-326[3] 孙儒泳. 动物生态学原理[M]. 1987,283-295[4] 黄根田、谢平. 武汉东湖鱼类群落结构的变化及其原因的分析[J]. 水生生物学报,1996,20:38-46[5] 谢松光. 扁担塘和梁子湖小型鱼类群落的空间和营养格局研究[D]. 中国科学院水生生物研究所博士学位论文,1999[6] 刘建康. 东湖生态学研究(一)[M]. 北京:科学出版社,1990,152-164[7] Tameishi H, Shinomiya H, Aoki I, et al. Understanding Japanese sardine migrations using acoustic and other aids [J]. ICES J. Mar. Sci.1996,53:167-171[8] 刘建康、何碧梧. 中国淡水鱼类养殖学(第三版)[M]. 1992,351-363[9] Soria M, Fréon P, Gerlotto F. Analysis of vessel influence on spatial behaviour of fish schools using a multi-beam sonar and consequences for estimates by echo-sounder [J]. ICES J. Mar. Sci. 1996, 53:453-458
DownLoad: