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All Journal Biodiversitas Journal of Biological Diversity
Ternala Alexander Barus
Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara. Jl. Bioteknologi No. 1, Medan 20155, North Sumatra, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Fish diversity and heavy metal accumulation of Pb, Cu and Zn after Mount Sinabung Eruption in Benuken River, North Sumatra, Indonesia Melda Agnes Pebriani Sinuraya; Ternala Alexander Barus; Syafruddin Ilyas
Biodiversitas Journal of Biological Diversity Vol. 23 No. 1 (2022)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d230124

Abstract

Abstract. Pebriani MA, Barus TA, Ilyas S. 2021. Fish diversity and heavy metal accumulation of Pb, Cu and Zn after Mount Sinabung Eruption in Benuken River, North Sumatra, Indonesia. Biodiversitas 23: 187-194. The Benuken River is a river that has been affected by the volcanic ash eruption of Mount Sinabung, one of the active volcanoes in Indonesia. This study further examines the diversity of fish species and the analysis of their tissues with regard to the heavy metal content of each species in the Benuken River, Berastepu Village, Karo Regency after the eruption of Mount Sinabung using atomic absorption spectroscopy (AAS). The fish and water sampling were carried out in March 2019 with two sampling points using the electrofishing technique. Furthermore, four species were documented, including Spotted barb (Puntius binotatus), River loaches (Homaloptera nebulosa), Mahseer (Tor soro), and Striped snakehead (Channa striata). The diversity index of the fish community from two study sites ranged between 0.012<H' <0.023 or was categorized as very low in diversity. Meanwhile, the heavy metals concentrations of Cu, Pb and Zn in the water of Benuken River were below tolerance level based on the Governmental Regulations No. 82 year 2001. The average heavy metal concentrations in fish tissue were also safe for consumption based on the standard quality by FAO/WHO (2004) with 0.0049 ppm, 0.0056 ppm and 0.3852 ppm of Pb, Cu and Zn, respectively.
Population of white shrimp (Penaeus merguiensis) in a mangrove ecosystem, Belawan, North Sumatra, Indonesia Indah Widiani; Ternala Alexander Barus; Hesti Wahyuningsih
Biodiversitas Journal of Biological Diversity Vol. 22 No. 12 (2021)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d221218

Abstract

Abstract. Widiani I, Barus TA, Wahyuningsih H. 2021. Population of white shrimp (Penaeus merguiensis) in a mangrove ecosystem, Belawan, North Sumatra, Indonesia. Biodiversitas 22: 5367-5374. White shrimp (Penaeus merguiensis De Man) is an essential fishery commodity with high economic and ecological value in the coastal area of North Sumatra. The main objective of this study was to determine the density of white shrimp in each harvesting area and to evaluate the current physicochemical factors in the Belawan mangrove ecosystem, North Sumatra, Indonesia. Four sampling sites were chosen as study areas. White shrimps were caught using ambai nets with a dimension of 4.5×4.5 m in width and 17 m in length placed from 4:00 - 7:00 PM. Measurement of physicochemical characteristics of sampling sites was conducted in situ and in the laboratory. Based on our study, the highest shrimp density was documented in the fishpond area (station 1) (89 ind/m2), while the lowest density was from the mangrove ecosystem area (station 2) (28 ind/m2). Based on the length class, the population of white shrimps was dominated by 16-18 mm shrimps. The gonad maturity level of the white shrimp population was classified into level 1 (The absence of thin-to-thick threads along the dorsal lining indicated the lowest gonad maturity level). White shrimps exhibited negative allometry in growth with a clumped pattern in population dispersion within the study area. The physicochemical parameters in four sampling sites, such as phosphorus content (P), and nitrate (NO3), exceeded the standard national quality set by the Ministry of Environment and Forestry.
Co-Authors Hesti Wahyuningsih Indah Widiani Melda Agnes Pebriani Sinuraya Syafruddin Ilyas