Vol 19, No 2 (2021)

Vol 19, No 2 (2021)

Oktober 2021

Table of Contents

Articles

Heavy Metal Content in Sediment and Hora Shell (Cerithidea obtusa) in Panipahan Waters, Rokan Hilir, Riau

10.31258/jnat.19.2.29-36

Indra Wariski, Yusni Ikhwan Siregar, Bintal Amin

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29-36

Utilization of Tofu Liquid Waste as Organic Fertilizer on the Growth and Production of Paddy Rice Plants (Oryza sativa L)

10.31258/jnat.19.2.57-64

Wili Heriko, Tri Nopsagiarti, Angga Pramana

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57-64

Abundance and Distribution Patterns of Gastropods in the Intertidal Bay of Kambang Lengayang Sub-District, Southern Coastal District, West Sumatera

10.31258/jnat.19.2.37-42

Ichwanul Harif, Afrizal Tanjung, Elizal Elizal

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37-42

Genetic Change of Pharella acutidens Influenced by Pb and Cd Metals in Rupat Strait Waters

10.31258/jnat.19.2.43-50

Tri Vani Bernadetha Ginting, Syafruddin Nasution, Irwan Effendi

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43-50

Analysis of Microplastics on Sediments in the Waters of Selat Panjang of Tebing Tinggi Subdistrict, Meranti Islands Regency, Riau Province

10.31258/jnat.19.2.51-56

Ridwan Saiful Basri Pasaribu, Syahril Nedi, Elizal Elizal

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51-56