The Evaluation of the Success of the Growth of Vegetation in Conservation Efforts at the Area Tanjung Bastian Kabupaten Timor Tengah Utara

Pengelolaan terhadap sumberdaya alam menjadi point penting terutama dalam menjaga manfaat, kesinambungan dan berkelanjutan sumber alam. Potensi sumberdaya alam yang tersedia dengan pengelolaan yang baik dapat memberikan manfaat bagi kehidupan manusia. Potensi sumberdaya alam dapat menjadi daya tarik masyarakat dan dapat dijadikan sebagai tempat wisata. Kawasan Tanjung Bastian merupakan salah satu kawasan wisata yang berada di Kab. TTU. yang identik dengan pantai serta juga arena pacuan kuda dan pemandangan alam. Dalam pengelolaannya upaya mempertahankan kondisi ekologi di wisata Tanjung Bastian seperti kegiatan penanaman vegetasi diareal kawasan wisata sebagai upaya konservasi lahan sebagai regerasi vegetasi. Kelangsungan hidup vegetasi dapat tumbuh pada kondisi pertumbuhan yang stabil dan mampu bersaing dengan kondisi fisik lingkungan dan iklim yang ekstrim. Tujuan dari penelitian ini untuk mengetahui tingkat keberhasilan vegetasi dan faktor-faktor penyebab kerusakan pertumbuhan vegetasi. Berdasarkan hasil observasi tanaman yang berhasil hidup sebanyak 53 tanaman yang terdiri dari 6 spesies, dengan jumlah yang hidup terbanyak terdapat pada spesies Delonix regia sebanyak 15 tanaman, dan spesies yang paling sedikit ialah spesies Senna siamea dengan jumlah 3 tanaman. Klasifikasi kriteria penilaian keberhasilan vegetasi bahwa tingkat keberhasilan vetegasi di kawasan tanjung bastian termasuk dalam kategori agak rusak dengan nilai 57,3%.ABSTRACTResources management nature becoming point to important especially in maintaining benefits, continuity and sustainable natural source.Natural resource potential available with proper management would be of avail for human life. Natural resource potential can be attraction the community and can be used as tourist destinations. The area of tanjung bastian is one of the area who was in District North Central Timor are identical to the beach and also the racetrack and natural scenery. In its management efforts to maintain ecological conditions in Tanjung Bastian tourism such as planting tourism areas as an effort to conserve land as vegetation regeneration. The survival of vegetation can grow in stable growth conditions and be able to compete with extreme environmental and climatic conditions. The purpose of this study was to determine the success rate of vegetation and the factors causing damage to vegetation growth. Based on the results of observation plants who succeeded life 53 a plant consisting of 6 species with the numbers of life most there are to a species Delonix regia as many as 15 plants and the least species is Senna siamea with 3 plants. The classification of the assessment criteria vegetation that the level of success of success in the vetegasi tanjung bastian included in a category in quite poor repair the % 57,3.

The influence of fast-growing species composition on natural regeneration of coal mine reclamation

Natural regeneration on mine reclamation can be an indicator of reclamation success. Enterolobium cyclocarpum, Samanea saman, Senna siamea, and Paraserianthes falcataria are mostly planted fast-growing species at the beginning of reclamation. Those species bind and enrich nitrogen to improve the natural regeneration of ex-mined land. This research aims to determine fast-growing species and the growth rate of natural regeneration development in the ex-mined site. The research was conducted in mine reclamation areas with different ages: 1 (125.14 ha), 4 (323.76 ha), 6 (199.44 ha), 9 (285.18 ha), and 11-year-old plantation (75.39 ha). The statistical analysis of Multivariate Analysis showed that biological species were mostly grouped with P. falcataria than E. cyclocarpum and S. siamea in the 11-year-old plantation area as well as in the 9-year-old plantation area. Most natural species were grouped with C. cyclocarpum rather than S. saman and S. siamea in a 6-year-old plantation area. In contrast, the biological species had no groups with E. cyclocarpum and S. siamea as fast-growing species in the 1-year-old plantation area. Generally, the most dominant planted fast-growing species were E. cyclocarpum (with the mean total number ± standard deviation, (35 ± 17.1)) and P. falcataria (28 ± 8.3). The number of natural regeneration species and individuals in areas dominated by P. falcataria (5 ± 1.7 and 25 ± 10.5) was greater than in areas with predominance of E. cyclocarpum (4 ± 2.6 and 11 ± 4.8). Thus, species selection is necessary to increase natural regeneration. However, further research is required to measure the tolerability of fast-growing species on other natural regeneration species.

Antioxidant Potentials, Phytochemical Profiles and Ameliorating Effects of Senna siamea Extract on Arsenic-Induced Hepato-Renal Damage

This study evaluated the in- vitro antioxidant, phytochemical constituents and hepato-renal protective efficacy of Senna siamea methanolic extract in arsenic-induced oxidative stress. The results of this study show that S. siamea has strong antioxidant potentials against 2,2-Diphenyl-1-picrylhydrazyl (DPPH) and 2,2’azinobis (3 ethylbenzothiazoline-6-sulphonic acids) (ABTS) radicals. The extract scavenges nitric oxide radicals and has strong ferric reducing power. It also inhibited the induction of lipid peroxidation and α-amylase activity in a concentration-dependent manner. Administration of arsenic to rats induced a significant increase in the levels of alanine aminotransferase, aspartate aminotransferase, cholesterol, urea, creatinine, and triglycerides in the plasma, while it decreased superoxide dismutase, glutathione and catalase activities in the liver and kidney. It also significantly reduced the levels of white blood cells, red blood cells, platelet and lymphocytes in the blood. However, rats pretreated with S. siamea extract before arsenic administration significantly reversed all these arsenic-induced changes. Histological observations showed varying degrees of liver damage in the arsenic group that was un­treated, while the pre-treatment with S. siamea extract significantly improved the general histoarchitecture of the liver. The phytochemical constituents of the extract were determined, the gas-chromatography analysis revealed the possible presence of oxalic acid, barakol, kaempferol, betulin while total phenolics content, crude protein, crude fat, crude fibre are in considerable amount in the plant This study demonstrated that S. siamea extract has antioxidant potentials and ameliorates arsenic-induced hepato-renal toxicity, the effectiveness of S. siamea as a medicinal plant could be due to the presence of various phenolics and antioxidant compounds in the plant.

(−)-Brunneusine, a new phenolic compound with antibacterial properties in aqueous medium from the leaves of Agelanthus brunneus (Engl.) Tiegh (LORANTHACEAE)

Agelanthus brunneus (Loranthaceae) is a hemiparasitic plant growing on Senna siamea (Fabaceae). The chemical investigation of its leaves and flowers led to the isolation of one new phenolic compound namely (−)-brunneusine (1), together with 13 known compounds. The crude leaves and flowers extracts (CLE and CFLE) with their ethyl acetate fractions (EAFL and EAFFL) and some isolated compounds (1–3; 8–9 and 11–14) have been tested on four bacterial species of sanitary importance isolated in an aquatic environment. All the samples except compound 3 showed antibacterial activity with MICs ranging from 0.43 to 8.88.103 µg/mL and MBCs from 0.43 to 3.55.103 µg/mL. Compounds 9 and 14 showed better activity on all bacterial species tested with MICs ranging from 0.43 to 27.77 µg/mL. Only CLE, EAFL and compounds 14, 2, 8 and 9 showed bactericidal effects on all bacterial species tested.

NESTING BEHAVIORAL ADAPTATIONS OF ORANGUTAN (PONGO PYGMAEUS MORIO) IN COAL MINING AREA IN EAST KALIMANTAN

Coal mining changed forest structure and composition, it caused large negative impacts on the orangutan. In order to mitigate those negative effects, it is crucial to understand their nesting behavior adaptation in mining area. We investigated 74 times nested event in coal mining rehabilition area (CMRA) in East Kutai and 123 times in the Kutai National Park (Prevab) from October 2013 to September 2014 and include only night nests. We compared both habitats. Orangutans in CMRA built the nest later than in Prevab and used 15 species of trees as nests sites intensively on Senna siamea and Gmelina arborea. In Prevab, 35 species with the higher frequencies on Eusideroxylon zwageri and Dracontomelon dao. The average diameter of nest trees in CMRA smaller than Prevab. The height of nest trees in CMRA with the highest frequency was in 10.1-15 m, while in Prevab was as in 20.1-25 m. Orangutans in CMRA nested at the height of <15 m, lower than in Prevab was >20 m. Reused nest in CMRA was higher than in Prevab. Orangutans in CMRA more often built nests at the peak and limb, while in Prevab at the limb and peak. Orangutans in CMRA had learned to utilize various species and dimensions of trees as the place to build nests.

Assessment of Leaf Litter Production in Tropical Trees

Litter is the layer of detached dead plant material present on the surface of the soil. It plays an imperative part in the nutrient budgeting in agroforestry system. The quantum of litter produced varies with species and also seasons. Generally the litter production will be more during summer and less during monsoon times. Further the nature of the tree species like evergreen and deciduous will also influence litter production. In the present study, 10 tree species commonly found in farm lands were identified and selected from the experimental plot, which was located in Southern agro-climatic zone of Tamil Nadu and the soil type is alfisol with a pH of 6.0. The age of the trees was 10 years. The litter collection was done throughout the year on monthly basis and quantities produced were recorded. The data recorded were subjected to statistical analysis. The results revealed the following. Acacia auriculiformis produced a maximum leaf litter of 10.0 t/ha/year followed by Senna siamea. Summer season had more litter (3.55 kg/tree) followed by winter (1.54 kg/ha). A maximum mean monthly litter of 2.54 kg/tree was recorded in Tamarindus indica followed by Acacia mangium (0.76 kg/tree). Senna siamea and Gliricidia produced leaf litter throughout the year. Tamarind produced a maximum annual litter of 30.42 kg/tree followed by Acacia mangium (9.07 kg/tree).

Application of litters to inhibit nitrification in Vertisols on sweet corn (Zea mays S.)

<p>Nitrification, or the process of oxidation of ammonium to nitrate in the soil, needs to be inhibited because it reduces the efficiency of nitrogen fertilizers. Vertisols have 2:1 minerals and have high negative charge, so ammonium is more absorbed by soil particles, whereas nitrate is free to move in the soil and diffuses into the plant tissue or is leached with gravity water. This study aimed to determine the litter treatment that can inhibit the nitrification process in Vertisols on sweet corn plants. This research was conducted in June until November 2019 in the Plastic House of Plesungan, Gondangrejo, Karanganyar, Indonesia. This study used a basic completely randomized design with a single factor (litter type) as an immobilizer. The types of litter used in this study were <em>Gliricidia maculata</em>, <em>Albizia falcataria</em>, <em>Senna siamea</em>, and <em>Tithonia diversifolia</em>. The parameters observed were ammonium content, nitrification potential, average nitrate content, actual nitrification, plant height, number of leaves, and dry crown plant. <em>Tithonia diversifolia</em> gave the highest actual nitrification of 23.26%. <em>Senna siamea</em> has the lowest actual nitrification of 12.36%, followed by <em>Gliricidia maculata</em> with 17.39% and <em>Albizia falcataria </em>with<em> </em>17.67%. This shows that the <em>Tithonia diversifolia</em> litter has the highest value in inhibiting nitrification. Maize plants treated with the <em>Tithonia diversifolia</em> litter had the best plant growth compared to those applied with other treatments. Therefore, among the treatments used, the <em>Tithonia diversifolia</em> litter was most optimal in inhibiting nitrification in Vertisols.</p>

Effect of Azadirachta indica and Senna siamea Decoction on CD4+ and CD8+ Level, Toxicological, and Antioxidant Profile in HIV/AIDS Positive Persons

Acquired immune deficiency syndrome (AIDS) is a major public health problem affecting several countries with predominance in black Africa. Faced with therapeutic failure caused by resistance and supply disruptions, searching for other antiretroviral agents, in particular from natural sources, becomes necessary. Given popular consumption of Azadirachta indica and Senna siamea decoction in the Northern Cameroon region and the traditionally attributed antiretroviral value, information on its efficacy and safety consumption is relevant to confirm its use. A total of 297 participants aged 18–52 and HIV-positive were recruited and divided into 3 groups: one taking only the decoction (group 1), another taking only antiretroviral therapy (ARTs) (group 2), and finally, one taking the decoction and antiretroviral (group 3). During 6 months, all the participants of the concerned groups consumed daily (morning and evening) 250 mL of Azadirachta indica and Senna siamea decoction. CD4+ and CD8+ levels were measured by flow cytometry. Hepatic and renal toxicity and oxidative stress were evaluated spectrophotometrically by measuring ALT, AST, ALP, BUN, CREAT, SOD, CAT, and GSH parameters. We note an increase in the CD4+ level of the three groups with values much more pronounced in the group treated by ARTs + decoction, from 328 ± 106 to 752 ± 140. Group 2 presented not only biological signs of hepatic and renal toxicity but also significant oxidative stress. No signs of toxicity were detected in the other groups. The study concludes that a decoction of Azadirachta indica and Senna siamea stimulates the production of CD4+ and is not toxic. On the contrary, it would reduce the toxicity caused by ARTs intake.

Antimicrobial, Antioxidant and Antiproliferative Properties of the Leaves of Senna siamea

The aim of this study was to investigate the antimicrobial, antioxidant and antiproliferative activities of leaves of Senna siamea. A sequential solvent extraction procedure was used in extracting powdered Senna leaves, starting with hexane, ethylacetate, ethanol and distilled water, respectively. Dry extracts obtained were tested at various concentrations against Pseudomonas aeruginosa, staphylococcus aureus, Salmonella typhi and Candida albicans. Antioxidant (Qualitative and quantitative) and antiproliferative tests were carried out on samples of the dry extracts. Ethylacetate extract of Senna siamea showed the highest antibacterial activity against S. typhi (zone of inhibition 15.0 mm) at concentration of 500mg/ml. The aqueous extract had the highest antioxidant activity, evidenced by a low IC50 value of 12.89µg/ml. Antiproliferative activity was determined by calculating the percentage inhibition of germination of Sorghum bicolor L. seeds under appropriate conditions. Plants that inhibit seed germination may inhibit tumour growth. At 24 hours, the plant showed strong antiproliferative activity as evidenced by the high percentage inhibition. Ethanolic extract had the highest antiproliferative activity (90%) at 5000µg/ml, followed by the aqueous extract (88.5%). However, at 48 hours, all organic extracts showed very weak antiproliferative activity as evidenced by the low % inhibition. Only the aqueous extract showed considerable antiproliferative activity at 5000µg/ml (45%). This implies that the aqueous extract has considerable antiproliferative activity, hence, it may be a promising anticancer drug or has components that have anticancer properties. This shows that Senna leaves could serve as source of bioactive compounds with potential antimicrobial, antioxidant and anticancer properties.

Senna siamea (yellow cassia).

S. siamea is indigenous to southern India, Sri Lanka, Malaysia, Cambodia, Thailand and Myanmar, although it has been introduced widely into many states of India and also many countries in tropical Africa. As well as producing a good quality timber, often used for marquetry and inlay work due to its fine figure, the tree is used for erosion control planting, windbreaks, as a host for sandalwood (Santalum album), and as a nurse crop for Swietenia mahogani, to reduce borer attack. It is a common shade tree in Philippine towns and cities. It has been used to revegetate degraded agricultural land and is planted in taungya systems. It may be used as a shade tree for coffee (Heinsleigh and Holaway, 1988).It is one of the chief afforestation species in the dry zone of the Indian states of Andhra Pradesh, Tamil Nadu and Karnataka. The major disadvantage of the species is that it has a shallow root system, which make it susceptible to strong winds. Wood sawdust can cause irritation when in contact with the skin. Trials for timber plantations have been recommended (Gutteridge, 1997; Sosef et al., 1998), particularly as S. siamea could combine timber production with ornamental value. Research on genetic variation to determine the extent of adaptation of various provenances would also be of value.