This paper reports the approprite ranges of Mg 2+, Ca 2+ and their ratio Mg 2+/Ca 2+ in mixed seawater for rearing of Penaeus japonicus larvae. The ranges f
Based on the results of water sample measurements of nutrient concentrations at th e Datong Station of the Changjiang River from 1998 to 1999, combined w ith hi
The advantages of using unmanned underwater vehicles in coastal ocean studies are emphasized. Two types of representative vehicles, remotely operated vehicle (