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All Journal Asian Journal of Agriculture Biodiversitas Journal of Biological Diversity Nusantara Bioscience
ARU DEWANGGA
Department of Environmental Science, Faculty of Mathematics and Natural Sciences, Universitas Sebelas Maret. Jl. Ir. Sutami 36A, Surakarta 57126, Central Java, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Other

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Diversity and potential invasiveness of insects in agricultural landscapes of Wonosobo, Central Java, Indonesia SAKINA ENOVA RAHMADHANI; SIBRINA SALSABILA; ROI ANDRIANTO; SYARIFAH HASNA ROSYIDA; QUROTUL AINIA; ARU DEWANGGA; AHMAD DWI SETYAWAN
Asian Journal of Agriculture Vol. 9 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g090234

Abstract

Abstract. Rahmadhani SE, Salsabila S, Andrianto R, Rosyida SH, Ainia Q, Dewangga A, Setyawan AD. 2025. Diversity and potential invasiveness of insects in agricultural landscapes of Wonosobo, Central Java, Indonesia. Asian J Agric 9: 663-670. Altitude and microclimatic variation act as key ecological filters that shape species diversity, community structure, and invasion potential altitude, microclimate, and land-use intensity jointly structure insect communities in the agricultural landscapes of Wonosobo, Central Java, Indonesia. Surveys across lowland Karangsambung (621 masl), mid-elevation Blederan (969 masl), and highland Sembungan (2,056 masl) recorded 57 species from 31 families, revealing clear diversity gradients. Species richness and functional balance peaked at mid-elevation, where moderate temperatures and heterogeneous vegetation supported diverse herbivores, predators, and pollinators. Lowland sites retained high diversity driven by warm conditions and productive cropping systems. In contrast, highland assemblages were simplified and dominated by synanthropic Diptera (Musca domestica, Leucostoma simplex), reflecting harsh climatic filters and nutrient-enriched soils. NMDS-envfit analyses highlighted altitude, temperature, illumination, and wind as the main determinants of community structure. Invasiveness remained low overall, but disturbance-tolerant taxa increased with elevation. These findings emphasize the importance of vegetation heterogeneity, microclimate buffering, and biological control in sustaining ecological stability. As climate warming accelerates, mid-elevation agroecosystems may become critical resilience zones for conserving biodiversity and maintaining agricultural sustainability.
Invasion dynamics and elevational range expansion of insects in tropical agricultural landscapes of Wonosobo, Central Java, Indonesia SAKINA ENOVA RAHMADHANI; SIBRINA SALSABILA; ROI ANDRIANTO; SYARIFAH HASNA ROSYIDA; QUROTUL AINIA; ARU DEWANGGA; AHMAD DWI SETYAWAN
Nusantara Bioscience Vol. 17 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/nusbiosci/n170216

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Abstract. Rahmadhani SE, Salsabila S, Andrianto R, Rosyida SH, Ainia Q, Dewangga A, Setyawan D. 2025. Invasion dynamics and elevational range expansion of insects in tropical agricultural landscapes of Wonosobo, Central Java, Indonesia. Nusantara Bioscience 17: 355-374. Biological invasions in tropical mountain agroecosystems are increasingly reported, yet the processes driving elevational range expansion of invasive insects remain poorly understood. This study examined invasion dynamics and elevational range expansion of insects across a gradient of lowland to highland agricultural landscapes in Wonosobo District, Central Java, Indonesia. Using a targeted sampling approach, we quantified invasion intensity with the Relative Invasiveness Index (RII) and elevational expansion with the Altitudinal Expansion Index (AEI). Functional feeding group composition and environmental drivers were further analyzed to evaluate invasion-related community reorganization. A total of 692 insect individuals were recorded, of which 295 individuals (42.6%) belonged to nine invasive or potentially invasive taxa. RII values were lowest at lowland (13.2%), highest at mid-elevation (53.6%), and moderately high at highland sites (48.7%). In contrast, AEI was only positive in highland systems (mean AEI = 45.7%; range: 38.7-59.6%), where upslope expansion was detected in saprophagous Diptera, with Leucostoma simplex showing the highest elevational shift (up to 856 m above historically documented limits). Functional composition shifted from herbivore-dominated assemblages at low elevation to predator-dominated at mid-elevation and saprophage-detritivore-dominated at high elevation, indicating functional homogenization under increasing invasion pressure. Canonical Correspondence Analysis revealed that elevation and light intensity were the primary drivers of upslope expansion, while temperature and wind exposure influenced invasion dominance. These findings demonstrate that elevational gradients in tropical agricultural landscapes function as invasion filters rather than biodiversity gradients, with mid-elevation systems acting as transitional invasion hotspots and highland systems representing high-risk zones for invasion-driven functional simplification. The study highlights the need for elevation-specific invasion risk zoning and early intervention strategies to mitigate emerging invasion threats in tropical mountain agroecosystems.
Plant diversity, compositional turnover, and suitability screening across green open spaces in Semarang District, Indonesia DEWI RAHMAWATI; FAUZAN RAFI WICAKSONO; HAFIZH MUHAMAD ZEN; HANIFA SABILA RAHMA; RAISA NOOR SAFIRA; WIDHI HIMAWAN; ARU DEWANGGA; AHMAD DWI SETYAWAN
Biodiversitas Journal of Biological Diversity Vol. 27 No. 5 (2026)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d270538

Abstract

Abstract. Rahmawati D, Wicaksono FR, Zen HM, Rahma HS, Safira RN, Himawan W, Dewangga A, Setyawan AD. 2026. Plant diversity, compositional turnover, and suitability screening across green open spaces in Semarang District, Indonesia. Biodiversitas 27 (5): d270538. https://doi.org/10.13057/biodiv/d270538. Urban green spaces depend on plant composition as well as area, yet district-scale assessments integrating floristic richness, cross-site turnover, and transparent suitability screening remain limited in Indonesia. We inventoried plants at six purposively selected public green spaces in Semarang District, Central Java, in September 2024. Presence records were summarized as taxon and family richness, pairwise composition was compared using the incidence-based Sørensen coefficient, and 194 recorded plant taxa were screened using 23 silvicultural, management, aesthetic, and public-safety criteria. Tree architecture and literature-supported shade and windbreak potential were summarized for the reconciled tree subset. The inventory comprised 194 plant taxa from 62 families; three records were retained above species level (Areca, Croton, and Pteridophyta). Asteraceae (19 taxa), Poaceae (17), and Fabaceae (16) were the richest families. Raw site richness ranged from 33 taxa at GOS Ungaran Barat to 77 at Taman Serasi, and Sørensen similarity ranged from 13.2% to 40.0%, indicating strong compositional differentiation. Suitability totals ranged from 35 to 46; 156 taxa (80.4%) were classified as high and 38 (19.6%) as medium, with no low class. After reconciliation of the architecture dataset, 55 unique tree taxa represented 11 recognized architectural models; 34 were literature-supported shade candidates and 29 windbreak candidates. These are screening results rather than validated performance estimates. Because sites were purposively selected and survey effort, abundance, and site area were not standardized, the study provides a comparative management baseline rather than a district-wide statistical estimate. Management should retain inter-site compositional complementarity and combine screening scores with growth form, local occurrence, safety, and maintenance capacity. 
Co-Authors AHMAD DWI SETYAWAN DEWI RAHMAWATI FAUZAN RAFI WICAKSONO HAFIZH MUHAMAD ZEN HANIFA SABILA RAHMA QUROTUL AINIA QUROTUL AINIA RAISA NOOR SAFIRA Rini Syarifah Roi Andrianto ROI ANDRIANTO SAKINA ENOVA RAHMADHANI SAKINA ENOVA RAHMADHANI SIBRINA SALSABILA SIBRINA SALSABILA SYARIFAH HASNA ROSYIDA WIDHI HIMAWAN