Judul: Estimation of Potential Biomass, Carbon, and CO2 Absorption in Six Types of Stands in Gunung Walat Educational Forest, Sukabumi
Abstrak: Forest is an area that is mainly overgrown with trees and other woody plants that occupy a fairly large area. Forests play an important role as carbon stores and absorbers of carbon dioxide (CO2) where the biomass of trees and forest vegetation contains very large carbon stocks. This study aims to estimate the potential for biomass, carbon stocks, and to determine the potential for CO2 uptake in six stands in the Gunung Walat Educational Forest (HPGW), Sukabumi, West Java. Field data were collected on stands of Acacia (Acacia sp.), Gamal (Gliricidia sp.), Mahogany (Swietenia macrophylla), Pinus (Pinus sp.), Sengon (Albizia chinensis), Sonokeling (Dalbergia latifolia). The sample plots are 83 square plots with a plot size of (20 x 20) m for trees with subplots (10 x 10) m for poles, (5 x 5) m for saplings, and (2 x 2) m for seedlings. Estimation of biomass value using allometric equations. The results of the study showed the total biomass value of acacia 15,03 tons ha-¹, gamal 1.057,76 tons ha-¹, mahogany 586,50 tons ha-¹, pine 15782,31 tons ha-¹, sengon 0,03 tons ha-¹, sonokeling 8,14 tons ha-¹. Total carbon stock of acacia 7,06 tons ha-¹, gamal 519,58 tons ha-¹, mahogany 275,66 tons ha-¹, pinus 7.417,69 tons ha-¹, sengon 0,00 tons ha-¹, sonokeling 3,82 tons ha-¹. Total CO2 absorption acacia 25,92 tons ha-¹, gamal 1824,53 tons ha-¹, mahogany 1.011,66 tons ha-¹, pine 27.222,91 tons ha-¹, sengon 0,02 tons ha-¹, sonokeling 14,04 tons ha-¹.
Keyword: Biomass, carbon, carbon dioxide, education forest, HPGW, Biomass, carbon, carbon dioxide, education forest, HPGW

Judul: Estimating Model of Standing Volume and Biomass of Gunung Walat Educational Forest, Sukabumi, West Java
Abstrak: Informasi volume dan biomassa tegakan pada Hutan Pendidikan Gunung Walat (HPGW) sangat penting untuk mendukung pengelolaan hutan lestari di HPGW. Penelitian ini bertujuan untuk memperoleh model-model penduga volume dan biomassa tegakan HPGW menggunakan peubah-peubah yang mudah diukur di lapangan. Peubah tegakan (yaitu diameter rata-rata, tinggi rata-rata, luas bidang dasar, volume, dan biomassa) diperoleh dari 91 plot contoh. Data dianalisis menggunakan fungsi linier dan non-linier untuk menduga volume dan biomassa tegakan. Hasil dari penelitian menunjukan bahwa model terbaik untuk menduga volume tegakan adalah model V = 0.914 G 1.258 dengan nilai R 2 adj sebesar 89.36%, dan untuk menduga biomassa tegakan adalah model W = 0.771 V 0.966 dengan nilai R 2 adj sebesar 95.22%. ketika peubah volume tidak tersedia, biomassa tegakan dapat diduga peubah luas bidang dasar menggunakan model alternatif W = 0.796 G 1.192 dengan nilai R 2 adj sebesar 85.40%., Information on stand volume and biomass at Gunung Walat Educational Forest (GWEF) is essential to support sustainable forest management in GWEF. This study was aimed to develop models for estimating the volume and biomass of GWEF’ stands using variables that can be measured in the field. The stand variables (i.e. mean diameter, mean height, basal area, volume, and biomass) were derived from the field measurement 91 sample plots. The data were analyzed by using linear and non-linear regression models to develop stand volume and biomass models. The results showed that the best model for estimating stand volume was V = 0.914 G 1.258 with an R2 adj value of 89.36%, while that for estimating stand biomass was W = 0.771 V 0.966 with an R2 adj value of 95.22%. When the stand volume data were not available, the stand biomass could be estimated from stand basal area using an alternative model of W = 0.796 G 1.192 with an R2 adj value of 85.40%.
Keyword: allometric models, carbon stocks, stand biomass, stand volume

Judul: Studi Kasus Liver Neoplasia pada Anjing Shih Tzu
Abstrak: Liver neoplasia is the excessive and uncontrolled replication of hepatocytes that forms nodules visible in ultrasonography. The purpose of this study is to study and discuss the characteristic, diagnosis and treatment of liver neoplasm through the interpretation of ultrasonography and hematology in a Shih Tzu dog. Ultrasonography is conducted with a Chison Q8 ultrasound machine with a 5 to 7 MHz frequency convex probe on lateral recumbency. The blood cells, liver enzymes and nodules sizes were the main parameters in this study. The results in the period of three years from 2021 to 2023 were interpreted and supported with secondary data sources. The Shih Tzu dog is 14 years old in the year 2023 with a body weight of 5.21kg. No obvious clinical signs were observed during previous examinations. However, lethargy, vomiting and anorexia were recorded in its latest examination. Thrombocytosis, granulocytosis, high liver enzymes and hypoglycemia, which are some of the neoplastic clinical manifestations were also presented by this patient. Besides, liver neoplasm, spleen neoplasm and biliary sludge were the sonogram findings of this patient. The liver and spleen neoplasm was observed stable, while the biliary sludge volume fluctuated. The treatment strategy recorded is Ondansetron, Samylin®, Ornipural and Ursodeoxycholic acid.
Keyword: Blood biochemistry profile, Hematology, Liver Neoplasia, Shih Tzu, Ultrasonography