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All Journal JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Pembelajaran dan Biologi Nukleus International Journal Of Science, Technology & Management (IJSTM) International Journal of Educational Research and Social Sciences (IJERSC) International Journal of Education and Digital Learning (IJEDL)
Harahap, Arman
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The Diversity Of Macrozoobenthos River Aek Buru District Labuhan Batu Utara Harahap, Arman
International Journal of Science, Technology & Management Vol. 4 No. 5 (2023): September 2023
Publisher : Publisher Cv. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v1i3.742

Abstract

Benthos are organisms that live in the bottom of the waters, either animal or plant, living on the surface and in the bottom of the waters. This study aims to determine the diversity of Macrozoobenthos in the River Aek Buru. The study began in May 2021 to June 2021. Sampling of macrozoobenthos done using a Surber net. based on differences in the substrate at the base of the river. Macrozoobenthos found in the Aek Buru consists of two Phyla, namely the Arthropods and Mollusks. Phylum Arthropoda are found is of the class of Insects belonging to the genus Hydropsyche, Polycentropus, psephenus, Dryops, Anthopotamu, Acroneuria and Triops. The phylum of Mollusks that are found are from a class of Bilvavia included in the Genus Corbicula and of the class of Gastropods of the Genera Melanoides and Melanatria. The abundance of macrozoobenthos of the highest on each of the stations is Polycentropus (66,67 ind/L) and Potadoma (266,67 ind/L). The abundance of macrozoobenthos of the highest found is Melanatria by 622,2 ind/L. Based on the value of the Index of Diversity (H) (0,367 – 0,602) the index of dominance (C) (0,132 – 0,386) and the evenness (E) (0,367 – 0,602) River Aek Buru in the category good condition with high species diversity. Physical and chemical factors of the water body capable of supporting life macrozoobenthos.
Analysis of Differences in Well Water Quality Tests in the Highlands and Lowlands of Rantauprapat City Harahap, Arman
International Journal of Science, Technology & Management Vol. 4 No. 1 (2023): January 2023
Publisher : Publisher Cv. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v4i1.771

Abstract

The existence of clean water is very important considering the very dynamic activities of people's lives. Therefore, the quality and quantity must be considered. Clean water that meets health requirements must be free from pollution and must meet quality standards: one of them is physical requirements because drinking water that does not meet quality standards can cause health problems. The topography of an area can affect groundwater in that area. This study aims to analyze differences in the quality of well water in the highlands of Rantauprapat City and the lowlands of Rantauprapat City based on physical parameters. The research was conducted at the BTKL Physics Laboratory in Medan in October 2022. The method in this research was observational analytic with a cross-sectional approach. The sample was determined by purposive sampling which amounted to 50 samples. Data were analyzed using SPSS 21 and the Mann Whitney-U Test. The results showed that there was no significant difference in water quality in the parameters of taste, temperature, odor and turbidity with a p value > 0.05, while there were significant differences in the parameters TDS and DHL with a p value <0.05. Conclusion: There are no significant differences in water quality in the parameters of taste, temperature, odor and turbidity, while in the TDS and DHL parameters there are significant differences in water quality with a p value <0.05. 0.05 while the TDS and DHL parameters are significantly different with a p value <0.05. Conclusion: There are no significant differences in water quality in the parameters of taste, temperature, odor and turbidity, while in the TDS and DHL parameters there are significant differences in water quality with a p value <0.05. 0.05 while the TDS and DHL parameters are significantly different with a p value <0.05. Conclusion: There are no significant differences in water quality in the parameters of taste, temperature, odor and turbidity, while in the TDS and DHL parameters there are significant differences in water quality with a p value <0.05.
Correlation of Macrozoobenthos Diversity Index with Physico-Chemical Factors in Lake Toba, Toba Samosir Regency Sinambela, Masdiana; Simangunsong, Mariana; Simorangkir, Andreas; Harahap, Arman
International Journal of Science, Technology & Management Vol. 4 No. 3 (2023): May 2023
Publisher : Publisher Cv. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v4i3.829

Abstract

This study aims to determine the macrozoobenthos in Lake Toba, Toba Samosir Regency. This research was conducted from May to July 2018. Determination of research stations based on environmental baseline consisted of 4 stations, namely station 1 in Lumban Binanga Laguboti village, station 2 in Lumban Bul-bul Balige, station 3 in Lumban Binanga Sigumpar, and station 4 in Hutagaol Sigumpar. Samples were taken using Eckman Grab at 3 times at each station. The macrozoobenthos found consisted of two classes, three orders, eight families, 15 species with a total of 565 individuals. The species found were Brotia subgloriosa, Brotia peninsularis, Brotia castulata, Pomacea diffusa, Pomacea paludosa, Filopaludina polygramma, Filopaludina sp., Melanoides tuberculata, Lymnaea sp., Emilia sp., Corbicula sumatrana, Corbicula fluminea, Corbicula japonica, Pilsbryoconcha exilis, and Anodonta sp.. The macrozoobenthic species with the highest number of individuals was Corbicula sumatrana with 141 individuals and the least was Lymnea sp. by 1 individual. The macrozoobenthos ecological analysis included the average density of 2260, the average diversity index of 1.282, the average uniformity index of 0.633, and the average dominance of 0.390. Then correlated with physico-chemical factors using Pearson correlation (r). Correlation of diversity index with physico-chemical factors from the strongest to the weakest starting from depth and phosphate, turbidity, temperature, pH, BOD, and DO.
The Influence Of Learning Model Application of Discovery To The Results of The Study of Biology Harahap, Arman; Rafika, Mulya; Harahap, Paramadi
International Journal of Educational Research & Social Sciences Vol. 1 No. 1 (2020): December 2020
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijersc.v1i1.8

Abstract

This research was conducted in the upper secondary school Panai Middle years learning 2018/2019. This study aims to determine the influence of learning model application of Discovery to student learning outcomes on the material the human excretory system in class XI Science. This type of research is quasi-experimental. Population, all students of class XI Science high school Panai Tenga amounted to 32 people. The sampling technique is total sampling, where the entire population in the study sample. The instruments used are test, observation sheet and questionnaire. Data were analyzed using descriptive statistics, test prerequisites and the test of hypothesis with the help of SPSS software version 22.From the results of the hypothesis test, t-test paired samples (Paired Sample t-test), obtained the value of tcount of 5, 422 and ttable with α = 0.05, df = 15, the obtained values ttable amounted to 2,131. The value of tcount > ttable or 5,422 > 2,131 can be concluded that H0 is rejected and Ha accepted. This means that there is significant influence of learning model application of Discovery to student learning outcomes in class XI Science high school Panai Middle years learning 2018/2019.
Co-Authors Anang Susanto Aslan Aslan, Aslan Bambang Suwarno Febriani, Budi Gulo, Nur'Ainun Harahap, Aziddin Harahap, Nurlina Ariani Harahap, Paramadi Hasmi Syahputra Harahap, Hasmi Syahputra Julissa Ek-Ramos, Maria Lihardo Hulu, Irwan Maini Hasibuan, Kiki Masdiana Sinambela Mustika Piliang, Fenny Nwazonobi, Patrricia Pardamean Nasution, Muda Pardamean, Muda Rafika, Mulya Rosenta Purba, Ika Rosenta, Ika Simangunsong, Mariana Simorangkir, Andreas Siregar, Nur Safrani Syahputra Harahap, Hasmi Syahputra, Dicky Ananda