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›› 2015, Vol. 32 ›› Issue (6): 769-774.DOI: 10.7523/j.issn.2095-6134.2015.06.007

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Species composition and habitats of larval and juvenile fish in the shoreline waters of the middle reaches of Lijiang river

FENG Wenli1, WU Zhiqiang1,2, HUANG Liangliang1, ZHU Zhaojun1   

  1. 1. College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, Guangxi, China;
    2. Guangxi University, Nanning 530004, China
  • Received:2014-10-13 Revised:2015-05-11 Online:2015-11-15

Abstract:

Larval and juvenile fish samples were collected from shoreline and shallow waters of the middle reaches of Lijiang River in May, June, and July of 2014. Four habitat types (A: compound bank with grait and aquatic plants, B: natural bank with sand and aquatic plants, C: constructed bank with grait and aquatic plants, and D: constructed bank and graits without aquatic plants) were investigated. We collected a total of 5416 individuals of 11 species, belonging to 3 genera, 5 families, and 10 orders. β-Cody diversity index measurement matrix demonstrated that types A and B and type D are significantly different in species richness level. One-way ANOVA and LSD analysis showed that the species richness and abundance of larval and juvenile fish were significantly higher in types A and B than type D, and were similar in types A and B. Aquatic vegetation had a significant impact on species richness and bank type combined with aquatic plant had a significant impact on larval and juvenile fish abundance. However, sediment had no significant impact on abundance. In a word, restoration of riparian and aquatic vegetation is crucial to the maintenance of species richness and abundance of larval and juvenile fish.

Key words: larval and juvenile fish, species richness, abundance, habitat type

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