Fish diversity in nature reserves of Jiangxi Province, China

Abstract

According to the fish checklist of 14 nature reserves in Jiangxi Province, a total of 146 species of 7 orders, 26 families were present. Nature reserves of Cypriniformes were the major components of the fish fauna, consisting of 101 species, accounting for 69.28% of the total. Nature reserves of Siluriformes, consisting of 23 species, accounted for 15.75% of the total. For the family diversity (DF), Poyang Lake Nature Reserve scored the highest value (10.72), Ganjiangyuan Nature Reserve was the lowest at just 2.022. The genus diversity (DG) in Poyang Lake Nature Reserve, Nanjishan Nature Reserve, Wuyishan Nature Reserve, Jiulingshan Nature Reserve, Jinggangshan Nature Reserve, Jiulianshan Nature Reserve and Matoushan Nature Reserve are 3.746, 3.707, 3.391, 3.379, 3.355, 3.352 and 3.169 respectively. The result shows that the G-F index (DG-F) in Poyang Lake Nature Reserve is 0.651. The DF-G in Ganjiangyuan Nature Reserve, Yunjushan Nature Reserve, Yangjifeng Nature Reserve, Lushan Nature Reserve was negative. The cluster analysis divides the 14 nature reserves into eight groups for their geographical positions and river types.