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Analysis of heavy metal content (Pb, Cu, Cd, and Fe) in the seagrass Thalassia hemprichii as a bioindicator of marine pollution in Tihi-Tihi Village, Bontang City, East Kalimantan Safira Nurullita; Jailani , Jailani; Hamdhani , Hamdhani
Jurnal Ilmu Perikanan Tropis Nusantara (Nusantara Tropical Fisheries Science Journal) Vol. 4 No. 1 (2025): Nusantara Tropical Fisheries Science
Publisher : Faculty of Fisheries and Marine Science, Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jipt.v4i1.1366

Abstract

The waters of Bontang City have relatively productive anthropogenic activities that trigger changes in the quality of surrounding waters that have the potential for pollution in the waters of the Bontang City area and there is a seagrass ecosystem that can be used as a natural indicator because it is sensitive to the presence of pollutants. To answer the problems found, this final project aims to determine the concentration levels of heavy metals (Pb, Cu, Cd, and Fe) contained in seagrass Thalassia hemprichii species in the waters of Tihi-Tihi Village. This study uses descriptive methods and location determination using the purposive sampling method and heavy metal analysis in water samples, sediments, and seagrass T. hemprichii analyzed using the AAS (Atomic Absorption Spectrophotometry) tool. The results showed that the waters of Tihi-Tihi Village had been contaminated with the heavy metal content of Pb, Cu, Cd, and Fe with different concentration levels, the metal content in water ranged from <0.001-0.098 mg/L, in sediment ranged from 2.64-1063.53 mg/kg and in seagrass ranged from 0.02-3468.08 mg/kg.
The Role of Green HRM and Leadership in Enhancing Pro Environmental Behavior Within Organizations Sudjaniah, Derah; Dandono, Yustinus Rawi; Jailani , Jailani; Sascha, Indira; Nasrullah , Nasrullah
Annals of Human Resource Management Research Vol. 6 No. 1 (2026): March
Publisher : Goodwood Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/ahrmr.v6i1.3676

Abstract

Purpose: This study examines how Green Human Resource Management (Green HRM) and Green Transformational Leadership (GTL) enhance employees' Pro-Environmental Behavior (PEB), with green motivation acting as a mediator and sustainability climate serving as a moderator. Research Methodology: A quantitative, cross-sectional survey was conducted with 390 employees from sustainability-oriented organizations. The data were analyzed using Partial Least Squares Structural Equation Modelling (PLS-SEM) to assess the relationships between green HRM, GTL, green motivation, sustainability climate, and PEB. Results: Both green HRM and GTL significantly enhance green motivation, which, in turn, is the strongest predictor of PEB. Furthermore, the sustainability climate moderates and strengthens the indirect effects of green HRM and GTL on PEB. The results highlight that leadership and HR practices, through motivation and a supportive environmental climate, drive employees’ engagement in environmentally responsible behavior. Conclusions: This study demonstrates that employees’ pro-environmental behavior is shaped by a combination of HR practices, leadership, motivation, and organizational climate. The findings emphasize the importance of aligning HRM and leadership strategies with sustainability goals to foster green behavior in organizations. Limitations: This study employed a cross-sectional design, which limits causal inferences. The use of self-reported data could also have introduced biases. Contributions: This study integrates mediation and moderation mechanisms into environmental organizational behavior research, providing a comprehensive model that links green HRM, GTL, green motivation, and sustainability climate to enhance PEB.