Habitat characteristic of macrozoobenthos in Naborsahan River of Toba Lake, North Sumatra, Indonesia

International Conference on Agriculture, Environment, and Food Security

农业科学;生态环境科学

Basyuni, M.^1 ; Lubis, M.S.^2 ; Suryanti, A.^3

Department of Forestry, Faculty of Forestry, Universitas Sumatera Utara, Jl. Tri Dharma Ujung No. 1, Medan, North Sumatera

20155, Indonesia^1

Department of Aquatic Resource Management, Faculty of Agriculture, Universitas Sumatera Utara, Medan, North Sumatera

20155, Indonesia^2

Faculty of Marine Science and Fishery, Universitas Maritim Raja Ali Haji, Jl. Jl. Politeknik Senggarang, Tanjungpinang

29100, Indonesia^3

关键词: Macrozoobenthos;    PCA analysis;    Physical parameters;    Random sampling;    Relative abundance;    Suitable habitat;    Sumatra , Indonesia;    Zoobenthos;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/122/1/012106/pdf
DOI  :  10.1088/1755-1315/122/1/012106

来源: IOP

【 摘 要 】

This research described the relative abundance, dominance index, and index of macrozoobenthos equitability in Naborsahan River of Toba Lake, North Sumatra, Indonesia. The purposive random sampling at three stations was used to characterize the biological, chemical, and physical parameters of macrozoobenthos. The highest relative abundance of macrozoobenthos found at station 2 (99.96%). By contrast, the highest dominance index was at station 3 (0.31), and the maximum equitability index found at station 1 (0.94). The present results showed diversity parameters among the stations. A principal component analysis (PCA) was used to determine the habitat characteristics of macrozoobenthos. PCA analysis depicted that six parameters studied, brightness, turbidity, depth, temperature, dissolved oxygen (DO) and biochemical oxygen demand (BOD5) play a significant role on the relative abundance, dominance index, and equitability index. PCA analysis suggested that station 3 was suitable habitat characteristic for the life of macro-zoobenthos indicating of the negative axis. The present study demonstrated the six parameters should be conserved to support the survival of macrozoobenthos.