Predicting the effects of future climate change on the distribution of the genus Selaginella in Java, Indonesia

Main Article Content

AHMAD DWI SETYAWAN
SUTARNO
SUGIYARTO
SUNARTO
GILANG DWI NUGROHO
JATNA SUPRIATNA
MUHAMMAD NUR SULTON

Abstract

Abstract. Setyawan AD, Sutarno, Sugiyarto, Sunarto, Nugroho GD, Supriatna J, Sulton MN. 2026. Predicting the effects of future climate change on the distribution of the genus Selaginella in Java, Indonesia. Asian J For 10 (1): r100134. https://doi.org/10.13057/asianjfor/r100134. Ongoing climate change poses significant threats to ecosystems and species by altering environmental conditions beyond historical norms. Climatic factors strongly influence the distribution of plant species. Selaginella is a fern ally that relies on water for fertilization, making it potentially sensitive to climatic changes. This study assessed the current and future climatic suitability of Selaginella using the Maximum Entropy (MaxEnt) model based on 1,962 occurrence records in Java, Indonesia, and selected bioclimatic, topographic, edaphic, and ultraviolet radiation variables. Model performance was excellent, with a training AUC of 0.934 ± 0.006 and a test AUC of 0.921 ± 0.011. The most influential predictors were precipitation of the driest month (31.6%), elevation (27.6%), and mean temperature of the warmest quarter (12.7%), together accounting for 71.9% of total model contribution. Current climatically suitable habitat covered approximately 63,865 km², concentrated primarily in humid montane regions of West, Central, and East Java. Future projections were generated for three time periods (2030, 2050, and 2080) under four climate scenarios (RCP 2.6, RCP 4.5, RCP 6.0, and RCP 8.5). Stable habitats remained dominant across all scenarios, while centroid analyses revealed a general eastward and northeastern shift of suitable habitat. These results suggest that climate change is likely to drive geographic redistribution rather than widespread collapse of the collective climatic niche of Selaginella in Java. The study highlights the importance of precipitation and elevation in determining habitat suitability and provides a basis for anticipating future conservation challenges associated with climate-driven shifts in species distributions.

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Predicting the effects of future climate change on the distribution of the genus Selaginella in Java, Indonesia. (2026). Asian Journal of Forestry, 10(1). https://doi.org/10.13057/asianjfor/r100134

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