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Diversity Trees Riverside Rindu Hati as Science Teaching Materials Oriented Disaster Mitigation Pegi Gustari; Bhakti Karyadi; Sutarno Sutarno; Deni Parlindungan; Rendi Zulni Ekaputri; Ariefa Primair Yani; Mellyta Uliyandari
Bioma : Jurnal Ilmiah Biologi Vol 12, No 1: April 2023
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v12i1.15569

Abstract

The diversity of plants that exist on the banks of the Rindu Hati River is overgrown with plants, one of which is a tree-loving plant that has an important role in the river ecosystem and has the potential to mitigate disasters. This study aims to identify Disaster Mitigation Oriented Tree-Habitus Plants on the Rindu Hati Riverbanks which can be used as teaching materials in the form of Learning Unit Books (BUP) to increase understanding of natural science concepts and disaster awareness. Determining the research location using purposive sampling technique and inventory of tree plants using the quadratic method with an area measuring 20 mx 20 m at the tree level, 10 mx 10 m at the pole level, and 5 mx 5 m at the sapling level. Found 18 plant species from 13 families with a total of 137 individuals. These plants have disaster mitigation potential with a diversity index at the tree level reaching 2.674 in the medium category, the pole level reaching 2.432 in the medium category and the sapling level reaching 1.791 in the medium category. Based on these findings, a BUP can be made which can facilitate students in learning about information on tree-loving plants as disaster mitigation.
Accumulation Heavy Metal on Shrimp White (Litopenaeus Vannamei) at the River Mouth of Ketahun, North Bengkulu Rinda Fitri Handayani; Bhakti Karyadi; Deni Parlindungan; Nirwana; Fidia Fibriana
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 21 No. 2 (2024): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v21i2.15013

Abstract

Heavy metals are poisonous materials capable of causing damage to the normal aquatic organisms in the community around the Ketahun River estuary. The entry of heavy metals into the waters of the Ketahun River estuary is allegedly from various activities such as bathing, washing, toilet use, palm oil plantations, coal mining, and the disposal of gold mine waste. This is the background for conducting research to analyze the content of Hg, Cd, Pb, and As in Litopenaeus vannamei in the Ketahun River estuary. The determination of sampling locations was done using a purposive method, and the samples were tested using Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The ecology of the river estuary was measured using a thermometer, pH meter, Dissolved Oxygen Meter, and Total Dissolved Solid Meter. The research results were analyzed using a descriptive qualitative method. According to the findings of the study, the metal content in Litopenaeus vannamei exceeds the quality standard with an analysis result of 0.2328 mg/kg, while the quality standard is 0.20 mg/kg, which has health implications. For sediment, the heavy metal that exceeds the quality standard is mercury at 0.5921 mg/kg, while the quality standard is 0.15 mg/kg. The ecology of the river estuary continues to be an ideal environment for living biota.
Effect of Macronutrient Feed Combinations on Bioconversion, Survival, Growth, and Nutritional Value of Hermetia illucens Larvae Sagita, Fitria; Euis Nursaadah; Deni Parlindungan; Sutarno; Bhakti Karyadi
JURNAL ILMIAH PETERNAKAN TERPADU Vol. 13 No. 3 (2025)
Publisher : DEPARTMENT OF ANIMAL HUSBANDRY, FACULTY OF AGRICULTURE, UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jipt.v13i3.p816-831

Abstract

Organic wastes of tilapia offal, coconut pulp, and plantain are rarely optimally utilized, but they can be degraded by BSF larvae into nutritious biomass. This study aims to analyze the combination of organic waste macronutrient feed on bioconversion, survival, growth (weight, length, and thickness), and nutritional value (protein, fat, and carbohydrates) of BSF prepupae, using the Completely Randomized Design (CRD) method, 4 treatments P1 (50% tilapia offal: 25% plantain: 25% coconut pulp), P2 (25% tilapia offal: 50% plantain: 25% coconut pulp), P3 (25% tilapia offal: 25% plantain: 50% coconut pulp), P4 (33.3% tilapia offal: 33.3% plantain: 33.3% coconut pulp) and 3 repetitions. All treatments resulted in optimal survival (100%, survival). P4 produced an ECD value of 0.034% and WRI of 0.032% indicating the best efficiency and waste reduction. P1 was the best variation for weight at 5.69 g, length 19.7 mm, and thickness 5.8 mm. The Post Hoc Tuckey test showed no significant difference between treatments in weight and thickness parameters, but not in length parameters (<0.05). The protein content of P1 43.75%, fat P2 29.764%, and carbohydrate P2 1.374% were close to SNI 7994:2014 (meat bone meal, quality II). It was concluded that macronutrient feed waste affects bioconversion, survival, growth and nutritional value of BSF.