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All Journal JPBIO (Jurnal Pendidikan Biologi) Jurnal Cakrawala Ilmiah
Marasabessy, Rendy
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Humanities Economics, Econometrics & Finance Education Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Public Health Social Sciences Other

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PENGARUH MEDIA SOSIAL TERHADAP KEPUTUSAN PEMBELIAN KONSUMEN Rendy Marasabessy
Jurnal Cakrawala Ilmiah Vol. 4 No. 7: Maret 2025
Publisher : Bajang Institute

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This research aims to explore the influence of social media on consumer purchasing decisions by taking into account psychological, social, and marketing strategy factors adopted by businesses. In the current digital age, social media has emerged as a highly effective marketing tool, shaping consumer behavior and preferences through various approaches, including influencer endorsements, paid advertisements, and user-generated content. By employing a quantitative approach and survey method, this study gathered data from respondents aged 18 to 35 who are active social media users. The findings reveal that social media significantly impacts consumer purchasing decisions, influenced by factors such as trust in influencers, product reviews from other users, and the effectiveness of digital advertising. Moreover, e-commerce features integrated into social media platforms simplify transactions and enhance consumer purchase interest. The results of this research highlight that social media is not merely a communication platform but also plays a vital role in shaping contemporary consumer behavior. Thus, gaining deeper insights into the role of social media in purchasing decisions can assist businesses in crafting more effective marketing strategies while enabling consumers to make more informed and rational buying choices
Isolation and characterization of phosphate-solubilizing bacteria in land managed with the dusung system Ohiwal, Morgan; Marasabessy, Rendy; Yunita, Melda; Sukmawati, Sukmawati; Qibtiyah, Mariyatul
JPBIO (Jurnal Pendidikan Biologi) Vol 10, No 2 (2025): November 2025
Publisher : STKIP Persada Khatulistiwa Sintang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31932/jpbio.v10i2.4821

Abstract

Soil microorganisms play a crucial role in nutrient cycling and soil fertility, particularly through their ability to solubilize insoluble phosphate compounds. This study aims to isolate and characterize phosphate-solubilizing bacteria (PSB) on land managed under the dusung agroforestry system. Soil samples were collected from five types of land use: forests, mixed orchards, clove hamlets, nutmeg orchards, and shrubs. PSB isolation was performed using Pikovskaya medium with the spread plate method, followed by characterization of colony morphology (shape, edge, color, elevation) and Gram staining. The results showed that the highest PSB population occurred in forest land (8.3 × 10? CFU/ml), followed by mixed orchards (6.2–6.7 × 10? CFU/ml), clove orchards (5.3–5.4 × 10? CFU/ml), nutmeg orchards (3.2–5.6 × 10? CFU/ml), and the lowest in shrubs (7.1 × 10³ CFU/ml). The characteristics of PSB varied, with isolates from forests and nutmeg orchards predominantly consisting of coccus-shaped Gram-positive bacteria, while those from mixed and clove orchards were dominated by bacillus-shaped Gram-positive bacteria. The population and diversity of PSBs were influenced by the availability of organic matter, soil pH, and land management practices. These findings highlight the ecological importance of the dusung system in sustaining soil fertility and promoting ecosystem resilience.
Co-Authors Mariyatul Qibtiyah Melda Yunita Ohiwal, Morgan Sukmawati Sukmawati