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description Journal article public Jurnal Al-Azhar Indonesia Seri Sains dan Teknologi

Acacia Decurrens di Sebagian Kawasan Taman Nasional Gunung Merapi YOGYAKARTA

Sutomo Sutomo
Published 2019

Abstract

- Acacia decurrens, is an alien plant species that has begun to be a concern since its dominance in the former eruption of Mount Merapi in 2006. The purpose of this study is to describe quantitatively the Ecology of Acacia decurrens, its relation to several environmental factors and their invasive potential if correlated with diversity index. Vegetation analysis was carried out in four areas of Mount Merapi National Park, namely Kalikining, Kaliadem, Plawangan and Pranajiwa. Ordination using Non metric multidimensional scaling (NMDS) and Canonical Correspondence (CCA) methods and Spearman bivariate correlations were carried out in data analysis. NMDS analysis (2D stress = 0.14) shows that open areas due to eruptions in Kaliadem are now dominated by A. decurrens. The results of the analysis also showed a significant negative correlation (Spearman's rho = 0.6) between the abundance of A. decurrens species and the level of species diversity in the sampling location. From the results of CCA, A. decurrens, at the seedling stage, appears to coexist with other types of ground cover such as Alangium javanicum, and Araliaceae. But in the tree phase, this type tends to form pure stands and only occasionally appear alive can it coexist with other Fabaceae species such as Albizia lopantha. Acacia decurrens tree level seems to prefer sites with lower pH levels while A. decurrens seedling levels are more common at higher pH sites. A. decurrens have the potential to become weeds in the Mount Merapi National Park.Keywords-Autekologi, Faktor Lingkungan, IAS, Risk Assesment

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