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All Journal Biodiversitas Journal of Biological Diversity
SUTARNO SUTARNO
Department of Biology, 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

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Short Communication: The effects of SO2 and NO2 fumigation on the chlorophyll of Parmotrema perlatum from Mt. Lawu, Cemoro Sewu, Indonesia EFRI ROZIATY; SUTARNO SUTARNO; SUNTORO SUNTORO; SUGIYARTO SUGIYARTO
Biodiversitas Journal of Biological Diversity Vol. 24 No. 5 (2023)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d240515

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Abstract. Roziaty E, Sutarno, Suntoro, Sugiyarto. 2023. Short Communication: The effects of SO2 and NO2 fumigation on the chlorophyll of Parmotrema perlatum from Mt. Lawu, Cemoro Sewu, Indonesia. Biodiversitas 24: 2630-2637. Lichens are symbiotic organisms composed of algae and fungi. Lichens have long been recognized as bioindicators of environmental health. One of the lichen parts that will be affected by pollution is chlorophyll. The lichen thallus was fumigated with the gases from motor vehicle emissions. The lichens under study were Parmotrema perlatum (Huds.) M. Choisy, found in Cemoro Sewu Forest, Magetan, East Java. The categorization of vehicle emission exposure levels includes Level 0 (no fumigation, control group), Level 1 (1.5 hours), Level 2 (3 hours), Level 3 (4.5 hours), Level 4 (6 hours), Level 5 (7.5 hours) and Level 6 (9 hours). The fumigated thallus had already been examined with spectrophotometry. Sulfuric dioxide (SO2) was measured at 324 nm and 328 nm, whereas nitrogen dioxide and chlorophyll were measured at 645 nm and 663 nm. Each test was replicated three times (R1, R2, and R3). Level 6 had the highest NO2 and SO2 content. The highest NO2 content on thallus lichens was 4.00 at Level 6, while the lowest was 2.14 at Level 0 (Control). The highest SO2 content was 1.856 at Level 6, whereas the lowest was 0.231 at Level 0 (Control). The highest chlorophyll content of Parmotrema was found at Level 0, while the lowest was identified at Level 6 (0.245 µg ml-1). The highest content of chlorophyll b was 0.659 (Level 4), while the lowest was Level 6 (0.413 µg ml-1). The thallus Parmotrema responded positively to NO2 and SO2 exposure. Correlation tests between the four components, specifically fumigation, NO2, SO2, and chlorophyll, show a positive correlation between pollutants and chlorophyll.
Prediction of potential climate change impacts on the geographic distribution shift of Casuarina junghuhniana and C. equisetifolia in Southeast Asia HASNA KHAIRUNNISA; MINI AMBARWATI KUSUMA DEWI; MUHAMMAD AMJAD HAMY FAQIIH; MUHAMMAD REYNALDY PUTRAYUDA; GILANG DWI NUGROHO; MUHAMMAD INDRAWAN; SUTARNO SUTARNO; SUGIYARTO SUGIYARTO; SUNARTO SUNARTO; JATNA SUPRIATNA; ILYAS NURSAMSI; GUNAWAN GUNAWAN; PRAKASH PRADHAN; AHMAD DWI SETYAWAN
Biodiversitas Journal of Biological Diversity Vol. 24 No. 11 (2023)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d241161

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Abstract. Khairunnisa H, Dewi MAK, Faqiih MAH, Putrayuda MR, Nugroho GD, Indrawan M, Sutarno, Sugiyarto, Supriatna J, Nursamsi I, Pradhan P, Setyawan AD. 2024. Prediction of potential climate change impacts on the geographic distribution shift of Casuarina junghuhniana and C. equisetifolia in Southeast Asia. Biodiversitas 23: 6360-6371. Global warming, driven by various anthropogenic activities, leads to an increase in earth’s surface temperatures, exerting a profound influence on global climate patterns. This phenomenon significantly impacts the growth patterns of various plant species, including Casuarina equisetifolia L., commonly known as sea cypress, and Casuarina junghuhniana Miq., referred to as mountain cypress. The primary objective of this study is to assess the potential repercussions of climate change on the distribution of these two species within Southeast Asia. To achieve this goal, the study utilized the MaxEnt modeling approach, incorporating key factors such as bioclimatic conditions, soil characteristics (edaphic factors), and UV radiation levels. Present study considered three distinct time intervals (2030, 2050, and 2080) while exploring four diverse climate change scenarios (RCP 2.6, RCP 4.5, RCP 6.0, and RCP 8.5). The findings of this investigation reveal that both C. equisetifolia and C. junghuhniana are susceptible to alterations in the extent of suitable habitat distribution, which result in shifts in their geographic ranges due to evolving climatic conditions. Initially, the habitat distribution encompassed an area of only 652,819 km2, accounting for 15.65% of the suitable habitat for C. equisetifolia, and 30,132 km2, representing 0.7% of the suitable habitat for C. junghuhniana. However, by the year 2080, the habitat range for C. equisetifolia is projected to expand significantly to cover 755,082 km2 (18%) under the RCP 4.5 scenario. In contrast, C. junghuhniana is expected to experience a notable reduction, with its suitable habitat shrinking to 25,332 km2 (0.6%) under the influence of RCP 8.5. Notably, these shifts are characterized by a southeastward migration of C. equisetifolia towards Indonesian Borneo from Malaysian-Indonesian border and an eastward shift of C. junghuhniana towards the east of Sulawesi from the Gulf of Bone. These findings highlight the dynamic nature of species distributions in response to changing climatic conditions, emphasizing the need for proactive conservation efforts and adaptive management strategies to mitigate potential ecological impacts.
Modeling the current habitat suitability of genus Selaginella in Java, Indonesia AHMAD DWI SETYAWAN; SUTARNO SUTARNO; SUGIYARTO SUGIYARTO; SUNARTO SUNARTO; MUHAMMAD NUR SULTON; GILANG DWI NUGROHO; ILYAS NURSAMSI
Biodiversitas Journal of Biological Diversity Vol. 27 No. 3 (2026)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d270342

Abstract

Abstract. Setyawan AD, Sutarno, Sugiyarto, Sunarto, Sulton MN, Nugroho GD, Nursamsi I. 2026. Modeling the current habitat suitability of genus Selaginella in Java, Indonesia. Biodiversitas 27 (3): d270342. https://doi.org/10.13057/biodiv/d270342. Species Distribution Models (SDMs) have become essential tools in ecology, biogeography, biodiversity conservation, and natural resource management. Among the available approaches, Maximum Entropy (MaxEnt) is widely used to predict species distributions based on occurrence records and environmental variables. Selaginella (Selaginellaceae) is a lycophyte genus that depends on moist environmental conditions because free water is required for fertilization, making its distribution closely associated with climatic factors. This study aimed to model the current habitat suitability of Selaginella in Java, Indonesia, and to identify the climatic and topographic variables influencing its distribution. Occurrence records were compiled from field surveys, herbarium collections, and biodiversity databases, yielding 1,962 filtered records representing 21 accepted species and one unidentified accession. After data cleaning and 5-km spatial thinning, 811 occurrence records from 434 localities were retained for modeling. Twenty-two environmental predictors were evaluated, and model performance was assessed using cross-validation and Jackknife analyses. The MaxEnt model achieved good predictive performance (AUC = 0.811), indicating reasonably reliable discrimination between suitable and unsuitable habitats. Habitat suitability was primarily influenced by elevation (28.9%), Solar Radiation in April (19.4%), Precipitation of the Warmest Quarter (17.2%), and Annual Precipitation (17.0%). Response curves indicated optimal suitability at elevations of approximately 1,000–1,500 m above sea level under humid climatic conditions with high annual rainfall. Suitable habitats covered approximately 63,870.41 km², representing 49.19% of Java’s land area, and were concentrated in mountainous regions of West Java, Central Java, East Java, and the Dieng Plateau. These findings demonstrate that climatic and topographic conditions strongly influence the distribution of Selaginella in Java and provide a valuable baseline for conservation planning, habitat management, and future climate-change assessments.
Co-Authors AHMAD DWI SETYAWAN AHMAD DWI SETYAWAN EFRI ROZIATY GILANG DWI NUGROHO GILANG DWI NUGROHO Gunawan Gunawan HASNA KHAIRUNNISA ILYAS NURSAMSI ILYAS NURSAMSI JATNA SUPRIATNA MINI AMBARWATI KUSUMA DEWI MUHAMMAD INDRAWAN MUHAMMAD AMJAD HAMY FAQIIH MUHAMMAD NUR SULTON MUHAMMAD REYNALDY PUTRAYUDA PRAKASH PRADHAN SUGIYARTO SUGIYARTO SUNARTO SUNARTO SUNARTO SUNARTO SUNTORO SUNTORO