In order to understand the structure of zooplankton community in shallow tropical reservoirs and its stability in dry seasons, we sampled in the pelagic zone of Gancun Reservoir every week which in three dry seasons from 2006 to 2007. Gancun Reservoir is a typical shallow tropical waterbody, located in the Leizhou Peninsula of Guangdong Province. Similar to most of tropical waterbodies with a low diversity, in total, only 8 speciesof crustacean had been identified in this reservoir. The average body length of the crustacean was between 400μm and 700μm. Diaphanosoma dubium is the dominant species in cladocerans, having an average body length 533μm, while in copepoda, Thermocyclops taihokuensis dominate with an average body length 787μm. Nauplii and cylopoid copepodites contributed a majority of the abundance and biomass of the whole community. In the size distribution of abundance and the number of species, the peaks occurred at the two length classes of 300-400μm and 400-500μm. Low abundance and species diversity in the pelagic zones was in coincidence with a relatively high-yield fishery in the reservoir, the high predation pressure was a main force in structuring the size distribution of crustacean community.
邓琛, 杨柳, 韩博平*. 一座热带浅水水库敞水区浮游甲壳动物群落结构[J]. , 2010, 29(1): 39-44.
DENG Chen, YANG Liu, HAN Bo-ping. Size structure of the planktonic crustacean community in the pelagic zone of a shallow tropical reservoir. , 2010, 29(1): 39-44.
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