A Study of the Relationship Between Mangrove Ecological Metrics and Environmental Factors in Aimas District, Southwest Papua | ||
| Egyptian Journal of Aquatic Biology and Fisheries | ||
| Volume 29, Issue 6, November and December 2025, Pages 1055-1073 PDF (706.69 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejabf.2025.431864.6769 | ||
| Authors | ||
| Ahmad Fahrizal* 1; Muhammad Kasnir2; Abdul Rauf1 | ||
| 1Fisheries Science Study Program, Indonesian Muslim University, Jl. Urip Sumoharjo, KM. 5, Makassar 90245, South Sulawesi, Indonesia. | ||
| 2Fisheries Science Study Program, Indonesian Muslim University, Jl. Urip Sumoharjo, KM. 5, Makassar 90245, South Sulawesi, Indonesia | ||
| Abstract | ||
| Mangrove ecosystems are vital in coastal resilience, yet local environmental conditions strongly influence their structure. This study aims to evaluate ecological indices of mangrove communities in Aimas District, Southwest Papua, and examine their relationships with environmental parameters to inform conservation and management strategies. Aimas District was chosen as it represents a transitional mangrove area facing increasing human pressure, but still retains natural stands. Field surveys were conducted in January - February 2025 across three representative stations using systematic transect-plot sampling, where mangrove individuals were categorized into four growth classes: seedlings, saplings, poles, and mature trees. Ecological indices, including species diversity (H’), evenness (e), and dominance (D), were calculated and analyzed in relation to various environmental variables using principal component analysis (PCA). Results revealed sapling-dominated communities with limited seedling recruitment and no mature trees. PCA analysis revealed two primary gradients: water chemistry (nutrients, organic carbon, and total nitrogen) and physical parameters (salinity, transparency, and dissolved oxygen) as the primary drivers of community structure. Species diversity and evenness were higher in areas with moderate salinity and high water transparency. In contrast, low dissolved oxygen, acidic pH, and nutrient-poor substrates favored dominance by a few tolerant species. The study demonstrates strong ecological linkages between mangrove community structure and environmental conditions, providing critical insights for sustainable management and resilience of coastal mangroves. | ||
| Keywords | ||
| Aimas District; Ecological indices; Mangrove ecosystem; PCA analysis; Environmental parameter | ||
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