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Nusantara Bioscience
Published by Universitas Sebelas Maret
ISSN : 20873948     EISSN : 20873956     DOI : https://doi.org/10.13057/nusbiosci
Core Subject : Education,
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Aims and Scope Nusantara Bioscience (Nusantara Biosci) encourages submission of manuscripts dealing with all aspects of biological sciences that emphasize issues germane to biological and nature conservation.
Arjuna Subject : Umum - Umum
Articles 17 Documents
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Search results for , issue "vol. 17 no. 2 (2025)" : 17 Documents clear
Destructive sampling-based allometric equations for biomass and carbon estimation in Acacia hybrid plantations in Southeastern Vietnam NGUYEN THI HA; TRAN QUANG BAO; NGUYEN THANH TUAN; DIEGO I. RODRÍGUEZ-HERNÁNDEZ; NGUYEN TIEN DUNG; TRAN THI NGOAN
Nusantara Bioscience Vol. 17 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/nusbiosci/n170203

Abstract

Abstract. Ha NT, Bao TQ, Tuan NT, Rodríguez-Hernández DI, Dung NT, Ngoan TT. 2025. Destructive sampling-based allometric equations for biomass and carbon estimation in Acacia hybrid plantations in Southeastern Vietnam. Nusantara Bioscience 16: 203-217. This study developed accurate allometric equations for estimating aboveground and belowground biomass, as well as carbon stocks, for Acacia hybrid (Acacia mangium × Acacia auriculiformis) plantations in Southeastern, Vietnam. A dataset of 45 destructively sampled trees with varying ages and diameter classes was used to validate the models. The fresh biomass of the four tree components (stem, branches, leaves, and roots) was measured for a total of 180 samples. Samples were oven-dried at 105°C for stems and branches, and 80°C for leaves, to determine their biomass. Linear and non-linear equations were employed to model both individual tree and stand-level dry biomass (AGB: aboveground biomass, BGB: belowground biomass, TGBG: total biomass), and carbon stocks (AGC: aboveground carbon, BGC: belowground carbon, TGC: total carbon). Diameter at breast height (DBH), tree height (H), stand density (SD), and stand age (A) were included as predictor variables. The best-fitting models were selected based on coefficients of determination (R²), sum of squared errors (SEE), mean absolute error (MAE), sum of squared residuals (SSR), correction factors (CF), mean absolute percentage error (MAPE), and root mean square error (RMSE), with R² values greater than 0.895 and RMSE values less than 0.363. The results revealed strong relationships between aboveground and belowground biomass, and logarithmic functions of DBH and tree height were found to be good predictors for all biomass components. The key equations are: ln(AGB) = -3.03805 + 0.586847*ln(DBH*H) + 1.58329*ln(DBH); ln(BGB) = -0.597955 + 0.485409*ln(DBH)2; ln(TGB) = -2.65453 + 2.11674*ln(DBH) + 0.57522*ln(H). Among the variables, DBH was found to be particularly effective in estimating BGB. At the stand level, total biomass (TSB) has a significant correlation with stand density, mean diameter, and stand height, as shown in the following equation: Ln(TSB) = -9.85561 + 1.09128*ln(SD) + 1.96789*ln(Ds) + 0.608831*ln(Hs).  These models provide foresters with valuable tools for estimating biomass and carbon accumulation in Acacia hybrid plantations. The total carbon stock of the Acacia hybrid population in the study area ranged from 29.0 tons/ha to 313.3 tons/ha. This information can support carbon accounting efforts and contribute to Vietnam's initiatives for carbon reduction and climate change mitigation.
Gamma-ray irradiation induced polymorphism in Echinacea purpurea revealed by RAPD markers AGUSTINA PUTRI CAHYANINGSIH; NITA ETIKAWATI; AHMAD YUNUS
Nusantara Bioscience Vol. 17 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/nusbiosci/n170211

Abstract

Abstract. Cahyaningsih AP, Etikawati N, Yunus A. 2025. Gamma-ray irradiation induced polymorphism in Echinacea purpurea revealed by RAPD markers. Nusantara Bioscience 17: 289-297. One of the major challenges in the development and cultivation of Echinacea purpurea in Indonesia is the narrow genetic diversity and the lack variation of local accessions, which restricts breeding potential to produce superior varieties with improved traits in terms of morphological characteristics and phytochemical content as medicinal ingredients. To overcome this challenge, gamma-ray irradiation methods can be used as an effective tool to induce mutations and increase genetic variability. This study investigated the impact of gamma irradiation on the genetic diversity of E. purpurea using Random Amplified Polymorphic DNA (RAPD) markers. The seeds of E. purpurea were irradiated using gamma-ray with irradiation doses of 0 Gy (control), 20 Gy, 40 Gy, and 60 Gy. Nine RAPD primers, including OPA-10, OPA-16, OPA-18, and OPA-19, were used to amplify DNA segments. The binary data obtained from the electrophoresis visualization for each treatment were analyzed using the Dice similarity index to calculate the similarity index. Dendrogram construction were performed using the NTSYS. The analysis revealed a significant increase in genetic diversity at doses of 40 Gy and 60 Gy, with 58.04% of the total bands showing polymorphism across all treatments. The 60 Gy treatment, in particular, resulted in the highest genetic dissimilarity compared to the control, indicating a dose-dependent response. The similarity coefficients between control and irradiated plants ranged from 63.7% (20 Gy) to 84.4% (0 Gy), with a noticeable trend toward greater genetic differentiation as the irradiation dose increased. These findings suggest that gamma irradiation effectively induces genetic variation in E. purpurea, which could be harnessed for mutation breeding programs aimed at improving desirable traits such as phytochemical production. However, further studies with larger sample sizes and long-term evaluation are needed to assess the stability of these mutations and their potential for incorporation into breeding programs. This study provides preliminary evidence supporting the use of gamma irradiation in enhancing genetic diversity and its potential application in breeding superior E. purpurea varieties with improved agronomic or medicinal traits.
Fatty acid profile of Chlorella sorokiniana InaCC M38 grown in tofu wastewater for biofuel potential DEVY SUSANTY; LUSI NURUL SAFITRI; RICSON PEMIMPIN HUTAGAOL; ADE AYU OKSARI; NURLELA NURLELA
Nusantara Bioscience Vol. 17 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/nusbiosci/n170205

Abstract

Abstract. Susanty D, Safitri LN, Hutagaol RP, Oksari AA, Nurlela. 2025. Fatty acid profile of Chlorella sorokiniana InaCC M38 grown in tofu wastewater for biofuel potential. Nusantara Bioscience 17: 226-234. Chlorella sorokiniana Shihira & Krauss, 1965 is a microalgae that can grow in tofu liquid waste medium by utilizing the nutrients in the waste in the form of carbon (C), nitrogen (N), phosphorus (P), and potassium (K). This research aims to determine the lipid content and fatty acid compounds contained in C. sorokiniana cultured in 25, 30, and 35% Tofu Liquid Waste (TLW) medium using two extraction methods. In this study, the growth of C. sorokiniana on TLW medium was determined by calculating the cell density of C. sorokiniana using a hemocytometer, and the biomass was collected by centrifuging. Chlorella sorokiniana was cultivated for seven days. Lipid extraction was performed using maceration and a combined ultrasonic-assisted extraction (UAE)–maceration method. Biomass and lipid yields, as well as fatty acid methyl esters (FAME) profiles, were analyzed using GC–MS. Chlorella sorokiniana grows well on 30% TLW medium with a dry biomass weight of 0.45 g/L on day 7; extraction using the combined method extracted more fatty acid compounds than the maceration method. Lipid yield using the extraction by combined extraction method had more excellent results (4.61%) than the maceration method (3.82%). The fatty acid composition of C. sorokiniana extracted by combination extraction consists of 11 types of Saturated Fatty Acids (SFA), two types of Monounsaturated Fatty Acids (MUFA), and two types of Polyunsaturated Fatty Acids (PUFA). The Saturated fatty acid most commonly contained in C. sorokiniana was palmitic acid, which could be applied as biodiesel. Chlorella sorokiniana cultured in 30% TLW has a higher percentage of SFA (56.58%) with less PUFA, making it more potential for biodiesel.
Stand structure, diversity, and carbon stock assessment of Lake Duluti Forest Reserve in Tanzania UPENDO SHWAIBU MFINANGA; EZEKIEL EDWARD MWAKALUKWA
Nusantara Bioscience Vol. 17 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/nusbiosci/n170201

Abstract

Abstract. Mfinanga US, Mwakalukwa EE. 2025. Stand structure, diversity, and carbon stock assessment of Lake Duluti Forest Reserve in Tanzania. Nusantara Bioscience 17: 185-193. For a successful conservation of biodiversity in a particular forest, assessment of its status and underlying threats is important. Estimation of carbon stocks locked up in the forest is also key in designing the required climate change mitigation options. However, there is limited information on the biodiversity status and carbon storage potential of many forest reserves in Tanzania. This study assessed the tree and shrub species diversity, composition, stand structure, and carbon stock potential of the Lake Duruti Forest Reserve (LDFR). Data were collected from 40 systematically established concentric plots (0.071 ha each) covering a total forest area of 26.24 ha. A total of 48 tree and shrub species were recorded, comprising both adult individuals (DBH ? 5 cm) and regenerants (DBH < 5 cm), representing 25 plant families. Adult individuals accounted for 42 species from 23 families, while regenerants included 22 species from 15 families. The Shannon-Wiener diversity index (H?) was 3.21 for adults and 2.80 for regenerants, indicating high species diversity. The mean stem density of adult trees was 197 ± 97 stems ha?¹, with a basal area of 16.27 ± 7.30 m² ha?¹. The estimated above-ground carbon stock was 79.24 ± 35.31 Mg C ha?¹, while below-ground carbon stock was 30.86 ± 12.77 Mg C ha?¹. The absence of visible anthropogenic disturbance suggests effective conservation measures are in place. These findings highlight the ecological stability and carbon sequestration potential of LDFR and highlight the need for strategic planning to enhance biodiversity conservation and carbon stock management.
Effect of tannin and amino acid supplementation on growth, digestibility, and blood parameters in heifer calves LU'LU' NABILA SALSABILA; AINISSYA FITRI; FAJAR EDY MARETNO SITANGGANG; IDAT GALIH PERMANA; WARTIKA ROSA FARIDA; DWITAMI ANZHANY; RONI RIDWAN
Nusantara Bioscience Vol. 17 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/nusbiosci/n170202

Abstract

Abstract. Salsabila LN, Fitri A, Sitanggang FEM, Permana IG, Farida WR, Anzhany D, Ridwan R. 2025. Effect of tannin and amino acid supplementation on growth, digestibility, and blood parameters in heifer calves. Nusantara Bioscience 17: 194-201. Nutritional management during the growth phase of heifer calves is crucial for optimal performance and health. Tannins and amino acids have shown potential benefits in ruminant nutrition through improved protein utilization and antimicrobial properties. This study aimed to evaluate the effect of tannins (1% DM), amino acids (0.3% DL-methionine + 0.7% L-lysine), and their mixture on heifer calves' performance and metabolic indicators. To achieve the objective, a 4 × 4 Latin square design was used with 4 calves (109.00 ± 18.17 kg of body weight), each receiving 4 treatments in 4 periods. The treatment period lasted 14 days, including 10 days for diet adaptation and 4 days for sample collection. The basal diet was a Total Mixed Ration (TMR) consisting of 20 kg/d of forage and 2 kg/d of concentrate. Treatments included: P1 (control, TMR only), P2 (TMR + 1% dry matter intake (DMI) tannin), P3 (TMR + 1% DMI amino acids), and P4 (TMR + 1% DMI tannin and 1% DMI amino acids). The results showed that individual supplementation in P2 (0.66 kg/h/d) and P3 (0.73 kg/h/d) had higher Average Daily Gain (ADG) compared to P1 (0.54 kg/h/d) and P4 (0.41 kg/h/d) (p < 0.05). Feed efficiency in P2 (2.65%) and P3 (3.02%) is higher than in P1 (2.49%) and P4 (1.74%) (p < 0.05). Although nutrient intake did not differ, Crude Protein (CP) intake in the P1 (0.32 kg/day) was lower than in the P2 (0.44 kg/day), P3 (0.39 kg/day), and P4 (0.40 kg/day) (p < 0.05). Plasma protein and cholesterol levels were lower in the P1 (7.07 g/dL; 94.14 mg/dL) than those (7.46-7.62 g/dL; 125.98-149.85 mg/dL, respectively) (p < 0.05). Overall, supplementation of 1% DMI tannin or amino acids alone improved the performance without compromising hematological profiles and blood metabolites.
Dengue virus and Plasmodium coinfection among febrile patients in Osun State, Nigeria BABAJIDE B. AJAYI; KEHINDE S. OLAITAN; OLUWATOBA F. OWOYOMI; SUNDAY E. ONI; AKINWALE M. AKINLABI; ELIZABETH O. ARO; DAVID O. OGBOLU
Nusantara Bioscience Vol. 17 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/nusbiosci/n170208

Abstract

Abstract. Ajayi BB, Olaitan KS, Owoyomi OF, Oni SE, Akinlabi AM, Aro EO, Ogbolu DO. 2025. Dengue virus and Plasmodium coinfection among febrile patients in Osun State, Nigeria. Nusantara Bioscience 17: 253-258. Dengue and malaria are major co-endemic vector-borne diseases in Nigeria, presenting significant diagnostic challenges due to their overlapping clinical symptoms. In settings where malaria is hyperendemic, febrile illnesses are often presumptively treated as malaria, potentially leading to the misdiagnosis of other pathogens like dengue virus (DENV). This study aimed to determine the seroprevalence of DENV infection and the prevalence of DENV/Plasmodium coinfection among febrile patients in Osun State, Nigeria. A cross-sectional study was conducted from April to September 2024, involving 250 febrile patients from selected healthcare facilities. Blood samples were analyzed using rapid diagnostic tests (RDTs) for Plasmodium antigens and for DENV-specific Immunoglobulin M (IgM) and G (IgG) antibodies. Sociodemographic and risk factor data were collected via structured questionnaires. The prevalence of malaria was high at 53.6% (134/250), consistent with the region's hyperendemic status. Evidence of recent DENV infection (IgM positive) was found in 0.8% (2/250) of patients, while 6.4% (16/250) were IgG positive, indicating past exposure. Concurrent infection was detected in 0.8% (2/250) of patients for Malaria/DENV IgM and 3.2% (8/250) for Malaria/DENV IgG. Both malaria and DENV IgG seropositivity were significantly associated with age (p<0.05). This study confirms the endemic circulation of DENV in Osun State and highlights its contribution to the burden of non-malarial febrile illness. These findings underscore the critical need to revise existing diagnostic algorithms and integrate DENV surveillance into public health frameworks to mitigate misdiagnosis and improve patient outcomes.
Morphological characterization and correlation of seed, fruit, and seedling of Horsfieldia iryaghedhi INDRIANI EKASARI; SAHROMI SAHROMI; PUTRI KESUMA WARDHANI
Nusantara Bioscience Vol. 17 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/nusbiosci/n170204

Abstract

Abstract. Ekasari I, Sahromi, Wardhani PK. 2025. Morphological characterization and correlation of seed, fruit, and seedling of Horsfieldia iryaghedhi. Nusantara Bioscience 17: 218-225. Horsfieldia iryaghedhi is a critically endangered species from the Myristicaceae family. Examining seed, fruit, and seedling morphology of the species is crucial, as generative propagation remains the only known conservation method. Therefore, this study aimed to determine the morphological characterization of the seed, fruit, and seedling of H. iryaghedhi and to analyse the correlation between seed, fruit, and seedling traits. This study was conducted at the Bogor Botanical Garden, utilizing five plant collections. The examined morphological traits included length, width, and weight of the seed, as well as fruit height, root collar diameter, and the number of leaves for the seedling. The results showed that the length, width, and weight of the fruit were 39.64±2.48 mm, 30.04±1.98 mm, and 20.33±3.60 g, respectively. Overall, the correlation between seed and fruit parameters indicates that one trait influences the other. The low variability in fruit and seed traits, despite being obtained from mother trees of different origins, has implications for the species' genetic diversity. The mean for seedling height is 106.74±32.78 cm, and the mean of collar diameter is 1.27±0.64 mm. Height and root collar diameter seedling traits were found to be closely related in 24-month-old seedlings. Understanding the ecology of seedling growth is essential for developing developmental strategies to conserve biodiversity and restore natural habitats. In conclusion, the variability in fruit and seed traits is exhibited by plants obtained from mother trees of different origins. The trees in the Bogor Botanical Gardens study site are mother trees, and this is extremely important for the future sustainable population of this species.
Assessing tourist experience and willingness to pay for biodiversity conservation at Mongkrang Hill, Mount Lawu, Central Java, Indonesia ARDITA AYU WULANDARI; ARUM NUR MUKARROMAH; ASFI DZIHNI; ATIKAH KHOIRIYAH AZZAM; ANGGUN DERISTANI; SUNARTO SUNARTO; 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/n170210

Abstract

Abstract. Wulandari AA, Mukarromah AN, Dzihni A, Azzam AK, Deristani A, Sunarto, Setyawan AD. 2025. Assessing tourist experience and willingness to pay for biodiversity conservation at Mongkrang Hill, Mount Lawu, Central Java, Indonesia. Nusantara Bioscience 17: 277-288. Highland ecosystems are ecologically sensitive environments increasingly pressured by nature-based tourism. Mongkrang Hill, located on the southern slopes of Mount Lawu in Karanganyar District, Central Java, Indonesia, has experienced rapid visitor growth, raising concerns regarding vegetation disturbance, waste accumulation, and declining habitat quality. This study assesses tourist experience and Willingness to Pay (WTP) for conservation by integrating the Experiential Value Scale (EVS) with economic valuation. A total of 60 visitors were surveyed using structured questionnaires, supported by field observations and semi-structured interviews. Multiple regression analysis showed that all four EVS dimensions—hedonic, novelty, interaction, and comfort—significantly influenced visitor satisfaction, with novelty and hedonic value being the strongest predictors. Satisfaction, in turn, had a positive and significant effect on WTP (? = 0.90), explaining 80.1% of its variance. The average additional WTP of IDR 15,840 indicates substantial potential for conservation-based financing. Observations further revealed ecological pressures related to trail erosion, vegetation trampling, and improper waste disposal, alongside community benefits through local economic activities and circular economy practices such as plastic waste recycling. The integrated EVS–WTP approach highlights how enhanced visitor experience can strengthen pro-conservation behavior and provide actionable pathways for sustainable ecotourism management. These findings support the development of experience-based conservation strategies for biodiversity protection in highland ecosystems.
Bamboo diversity, ecological structure, and utilization in the riparian ecosystem of the upper Bengawan Solo River, Central Java, Indonesia FIKA NUR APRILIA; FRANSISCA AMELIA KARTIKA ARDHYANTI; GHAZY AQILA SHANDY PRABOWO; HANA PARAMESTI; ANA SHOLEKAH ASZAR; CHEE KONG YAP; 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/n170209

Abstract

Abstract. Aprilia FN, Ardhyanti FAK, Prabowo GAS, Paramesti H, Aszar AS, Yap CK, Setyawan AD. 2025. Bamboo diversity, ecological structure, and utilization in the riparian ecosystem of the upper Bengawan Solo River, Central Java, Indonesia. Nusantara Bioscience 17: 259-276. Bamboo plays an important ecological and socio-economic role in tropical riparian landscapes, yet its spatial structure and environmental determinants remain poorly quantified. This study analyzed the diversity, composition, ecological dominance, and utilization of bamboo communities along the upstream–midstream–downstream gradient of the upper Bengawan Solo River, Central Java, Indonesia. Field surveys recorded five species—Bambusa spinosa, Dendrocalamus asper, Gigantochloa apus, G. atter, and G. atroviolacea—distributed unevenly across riparian zones. Diversity, species richness, and structural heterogeneity increased downstream, shifting from monodominant B. spinosa stands upstream to multi-species Gigantochloa assemblages in lowland alluvial areas. Importance Value Index (IVI) patterns revealed strong environmental filtering in the upstream zone, mixed natural–managed dominance midstream, and cultivation-enhanced coexistence downstream. Pearson correlation analysis indicated that soil moisture, canopy openness, and soil pH were the strongest predictors of diversity, whereas species dominance was shaped primarily by ecological traits and management intensity. Utilization patterns reflected a biocultural continuum, with D. asper and Gigantochloa spp. providing multipurpose materials for construction, food, handicrafts, and cultural practices, while B. spinosa served chiefly as an ecological stabilizer in upland slopes. The riparian bamboo system represents a socio-ecological mosaic shaped by hydrological gradients and community management. These findings highlight bamboo’s potential as a nature-based solution for riparian stabilization, biodiversity conservation, and livelihood support. Strengthening integrated, community-based bamboo management could enhance ecological resilience and sustainable riverine landscape governance in tropical regions.
Effect of light and media composition on growth and stomatal density of Phalaenopsis amboinensis MUHAMMAD ALANWARI NUGRAHA; DWI MURTI PUSPITANINGTYAS; HARYANTO HARYANTO
Nusantara Bioscience Vol. 17 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/nusbiosci/n170207

Abstract

Abstract. Nugraha MA, Puspitaningtyas DM, Haryanto. 2025. Effect of light and media composition on growth and stomatal density of Phalaenopsis amboinensis. Nusantara Bioscience 17: 243-252. Phalaenopsis amboinensis J.J.Sm. is an endangered orchid species endemic to Indonesia, valued for both its conservation significance and horticultural potential. However, limited natural populations and slow propagation rates hinder sustainable conservation efforts. This study investigated the combined effects of culture media composition and light conditions on the in vitro growth, chlorophyll content, and stomatal density of P. amboinensis plantlets. A factorial experiment was conducted using nine media formulations under light and dark conditions. Significant interactions between media and light treatments were observed across all measured parameters (p < 0.05). The KC EO2 medium, containing 2 g/L KC, 40 g/L potato (Solanum tuberosum L.) extract, 2 g/L peptone, and MS vitamins under light, produced the most vigorous vegetative growth (5.40 ± 2.50 leaves, 1.44 ± 0.31 cm leaf length, 2.00 ± 0.82 roots, and 1.89 ± 0.45 cm root length). In contrast, the KC EO3 medium with 2 g/L KC, 150 g/L mung bean sprout (Vigna radiata (L.) R.Wilczek) extract, and 150 mL/L young coconut water (Cocos nucifera L.) under light yielded the highest chlorophyll a content (0.695 ± 0.113 mg/g fresh weight) and stomatal density (77.57 ± 2.72 stomata/mm²). Control plantlets cultured without organic supplements under dark conditions showed poor growth and negligible chlorophyll accumulation. These findings demonstrate that organic-enriched media, especially when combined with light exposure, significantly enhance physiological and morphological development in vitro. The optimized culture conditions offer a practical and scalable protocol for ex situ conservation and commercial propagation of P. amboinensis, supporting the preservation and sustainable use of this rare orchid species.

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