Ecological Distribution Character of Virioplankton in the Northwest of the Yellow Sea in Spring and Autumn

This paper uses the traditional culture method and fluorescence microscopy to study the ecological distribution of bacteria of spring and autumn in the Northwest of the Yellow Sea.

Distribution dynamics of the inorganic nitrogen and assessment of ambient water quality at the estuary seawaters in North Yellow Sea;

Preliminary analysis of the waters pollution of the release sea area in Northern Yellow Sea;

The reproduction period of sea cucumber Apostichopus Japonicus (Selenka) was studied, including gonad index, primary branch diameter of gonad, egg number, initial phase of pelagic larvae, pelagic phase and attachment phase during May-September in 1991 and 1992 in the Northern Yellow Sea.

Distribution of active phosphates and assessment of the ambient water quality in estuary of the northern Yellow Sea;

in the paper, the four indexs of the phytoplankton community struture: Shannon-Wiever diversity index (H )、Margalef richness index(d)、Pielous eveness index(J)、McNauhtondominance index( D2 ) and community similarity coefficient were used to studay the phytoplanktoncommunity struture in inshore of the northern Yellow Sea in August.

precipitation samples were collected at Qianliyan Island (western Yellow Sea) and Maidao from 1997 to 1998, and the concentrations for 10 major ions, including H +、NH + 4、K +、 Na +、 Ca 2+ 、Mg 2+ 、F -、Cl -、NO - 3、SO 2- 4 were determined.