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All Journal Journal of Degraded and Mining Lands Management Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement)
Wardhani, Frita Kusuma
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management

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Enhancing Stakeholder Capacity for Effective Invasive Species Management in Conservation Areas Poedjirahajoe, Erny; Mahayani, Ni Putu Diana; Wardhani, Frita Kusuma; Satria, Ryan Adi; Pahlevi, Muhammad Reza
Jurnal Pengabdian kepada Masyarakat (Indonesian Journal of Community Engagement) Vol 10, No 4 (2024): December
Publisher : Direktorat Pengabdian kepada Masyarakat Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpkm.91646

Abstract

One of the ecological challenges in managing conservation areas is the colonization and establishment of alien and/or native plant species, especially after forest disturbances. The capacity stakeholders to determine the invasiveness risk of these plant species groups and then management strategies to monitor changes in vegetation structure and species composition is critical. The community engagement program aims to improve the capacity of conservation area stakeholders to identify plant species, including invasive species, and assess the risk of invasive species. Focus group discussion (FGD) were conducted online and offline and targeted stakeholders of the Natural Resources Conservation Agency (Balai Konservasi Sumber Daya Alam–BKSDA) of Central Java Province. Three FGD sessions were held on the topics: (1) forest monitoring and invasion ecology, (2) plant species identification and invasive species monitoring techniques, and (3) vegetation and invasiveness risk analysis. During the discussion, target groups shared ideas and lessons learned related to managing invasive species in the field. The results showed a significant increase in the capacity of the target group (p=4.546e-09), as the average pretest score was 56.25 ± 13.68 compared to the average posttest score of 75.70 ± 20.27. The target group understands the definition of an invasive (alien) species, the factors that determine the success of this species invasion, and the positive and negative contributions alien species to the newly established ecosystem. Some gaps that need to be addressed relate to methods and criteria for identifying species invasiveness in invasive species risk analysis. As a follow-up, a practical training on invasive (alien) species risk analysis was conducted at different occasion and funding sources.
Hydrogeomorphic controls on soil C:N:P stoichiometry and mangrove vertical growth: Implications for site selection and monitoring Wardhani, Frita Kusuma; Poedjirahajoe, Erny; Kamal, Muhammad; Hermawan, Much. Taufik Tri
Journal of Degraded and Mining Lands Management Vol. 13 No. 3 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.133.10399

Abstract

Hydrogeomorphic gradients shape habitat heterogeneity in coastal ecosystems, yet rehabilitation in degraded coastal landscapes often neglects geomorphic suitability, resulting in suboptimal soil recovery and vegetation development. This study evaluated how hydrogeomorphic settings regulated soil physicochemical properties, carbon (C), nitrogen (N), phosphorus (P) stoichiometry, and vertical growth in a rehabilitated mangrove forest on the north coast of Java, Indonesia. Physicochemical variables, soil nutrient concentrations, and vegetation structural metrics were collected at seven stations and analyzed using the Kruskal-Wallis test with effect size estimation and hierarchical linear mixed-effects models. Significant spatial differences in stoichiometric ratios, particularly C:P and N:P (?² = 0.77). Total nitrogen explained approximately 13% of the variance in the C:P ratio, while soil organic carbon significantly influenced the N:P ratio. The N:P ratio significantly influenced tree height (explaining 22% of the variation), whereas diameter at breast height was not significantly correlated. This study found that hydrogeomorphic factors played a dominant role in these patterns, with a conditional coefficient of determination of 0.75. These findings confirm that geomorphic suitability and nutrient stoichiometry should be considered in mangrove rehabilitation planning and monitoring to enhance their effectiveness in degraded coastal areas.
Co-Authors Erny Poedjirahajoe Hermawan, Much. Taufik Tri Muhammad Kamal Muhammad Reza Pahlevi Ni Putu Diana Mahayani Satria, Ryan Adi