Biology

This research aimed to study existence of blood clams population and the environmental factors that affect them. This research was conducted in the coastal waters of Banyuasin in February 2015. The blood clamp sample was collected using Ekman Grab at low tide. From the observation in the research site, the highest population density was 60 ind/m2 with clay substrate texture, while the lowest density was 20 ind/m 2 on the dusty clay substrate. Blood clams population was not found on the sand substrate texture station. Morphometric data showed that the blood clam population in the research site, including the medium category with b < 3 growth pattern (allometric negative). The results of PCA analysis proved that the habitat texture and sediment organic habitats were dominant factors besides the chemical physics environmental factors of the waters (temperature, salinity, pH).

The study on "The Biodiversity of Birds in the Region of Green Open Space (GOS) of The Petrochemical Industry, Palembang, South Sumatra, Indonesia" was conducted from August to September 2014 with the objective to determine the diversity of bird species. The method used to inventory bird species was Indice Ponctuels' Abondance (IPA) method. The results of the study revealed that there were at least 19 species of birds included in 14 families, in which four of the bird species were the species protected by the law, namely Halcyonchloris, Haliasturindus, Halcyonsmyrnensis, and Nectariniajugularis. The plant species as the habitat of the birds included Pterocarpus indicus Willd. (16.74%), Polyalthialongifolia Sonn. (14.02%), Cocosnucifera L. (12.98%), Elaeisguineensis Jacq. (7.76%) and Mangiferaindica L. (7.71%) with the diversity index of 2.96. These data prove that the area of green urban industry can also serve as a habitat for wildlife such as birds provided that the management of the green open space remains the concern of the industry.

Phytoplankton have important as food-chain major component and primary production of marine environment. However, high abundance of phytoplankton could give harmful effects toward water ecosystem. Moreover, they could produce toxic substances that will be accumulated within their consumer. This accumulation could be dangerous for human or animals.This research were aimed to determine and calculatespecies of harmful algae in Banyuasin coastal waters. The study was conducted on April, June, August, October and December of 2013, and in February 2014, at ten stations. Phytoplankton samples were taken vertically using plankton nets. In the form of cone-shaped with a diameter of 30 cm, length 100 cm and mesh size 30 μm.The result showed that there are 35 genera of phytoplankton. That have been found and consisted of four groups; Bacillariophyceae, Dinophyceae, Cyanophyceae and Chlorophyceae. 13 species were identified as Harmful Algal

Phytoplankton in the ocean has an important role in forming the base of food chain,  responsible in primary production. Its abundance and number of phytoplankton species will indirectly affect the level of water’s fertility. This study aimed to determine the presence of phytoplankton as bio-indicators of water quality in terms of abundance, diversity index, uniformity index, and saprobic coefficient in coastal waters of South Sumatera. The study was conducted on May 2013 - February 2014, at ten stations during high and low tides. Phytoplankton samples were taken vertically using plankton nets,  cone-shaped with a diameter of 30 cm, length 100 cm and mesh size 30 μm. The study found 41 genera of phytoplankton, consisted of family Bacillariophyceae (26 genera), Dinophyceae (7 genera) Cyanophyceae (7 genera) and Chlorophyceae (1 genus). The highest number of genera was recorded while low tides in November (24 genera), and the lowest was on May while high tides (16 genera). The highest ...

The research was conducted to inventory and identify as well as acknowledge the correlation between vegetation type with soil arthropods in the Green Barrier area of PT Pusri. PT. Pusri green Barrier area is 28 hectares and dominated by 10 types of vegetation, such as, the Angsana (Pterocarpus indicus Wild), Bambu (Bambusa Sp), Beringin (Ficus benyamina), Buah Roda (Hura crepitans L), Jati (Tectona grandis L), Kelampayan (Neolamarckia cadamba) , Ketapang (Terminalia catappa L), Mahony (Swietenia macrophylla King), Pulai (Alstonia scholaris), and Sengon (Paraserianthes falcataria L). Soil arthropods were collected by using pit fall traps and funnel barlese-tullgren in every type of vegetation, between July-August 2015. Identification of arthropod genera Identification has been done in Entomology Laboratory of the Agriculture Plant Disease Faculty Sriwijaya University, and analysis of soil organic in the Laboratory of Soil Faculty of Agriculture Sriwijaya University. The results were ...

The study was conducted to determine birds in Green Barrier PT. Pusri and explains the function of the existing vegetation in the Green Barrier for many species of birds. Retrieval of data was conducted in a 28 ha Green barrier area of PT Pusri, during July to August 2015. The collecting of data determined by line transects through observation directly. assuming the selection of sites in the area of water resources and representation of vegetation types that represent a potential habitat for birds. Birds observed then identified and recorded the type, activity include, nesting, feeding, perch and plants that exploited. The results of this study found 17 species in 13 families. Plant species are most frequently used by birds is batai wood (Paraserianthes falcataria). Recorded at least 10 species of birds found in the Green Barrier PT. Pusri utilize these plants as a perch, feeding and nesting. The availability of water in the form of an artificial fish ponds at the fish pond 1 (trans...

Zulfikhar, Zulkifli H, Kadir S, Iskandar I. 2017. The landscape structure change of the tropical lowland forest and its possible effect on tree species diversity in South Sumatra, Indonesia. Biodiversitas 18: 916-927. The forest fragmentation is a spatial structure change, resulted in a reduction of the number and size of forest patches, and a subdivision and breaking up of the areas into smaller parcels. The key scientific challenges concern the significant gaps exist in our ability to understand the relationships between landscape structure, biodiversity and the output of ecosystem services at different spatial and temporal scales. The objective of this study was to examine the possible effect of changes in a spatial pattern of habitat against the changes of the tree species diversity. We apply a landscape structure analysis of the forest fragmentation, and then determine the principal component of the landscape metrics. We analyzed multitemporal satellite imageries from 1989 to 2...

The third generation of bioethanol production, bioethanol converted from biomass of microalgae. Our reserach aimed to produce bioethanol from substrate microalgae Oscillatoria sp. as substrate has been conducted. Oscillatoria sp. cultured in two media namely Bold Basal and Blue Green 11. microalgae Oscillatoria sp. were cultivated in Bold Basal and Blue Green 11 media hydrolyzed substrate, 0.143 mL/g and 0.496 mL/g, respectively. Unhyrolysate microalgae generated 0.018 mL/g and 3.59 mL/g of reduced sugar, respectively. Biomass obtained from Blue Green 11 media and Bold Basal media were 0.676 g and 0.482 g, respectively. Based on HPLC analysis, Oscillatoria sp. biomass contained maltose. Biomass were hydrolyzed by autoclaving in 121°C for 15 minutes. Bioethanol production was conducted by fermentation process using Saccharomyces cerevisiae as a microbial agent which applied in hydrolysate and non-hydrolysate of microalgae. Ethanol generated from fermentation was analyzed using gas ch...

The existence of private green open spacesofthe yard whichinvolves community participation in the provision and utilization of green open space has not been synergized with the city government program for the achievement of green open spaces mandated by the statutory regulations.With the statutory regulationson community involvement, this researchaimstoexamine the community attitudes andparticipation in the provision and utilization of green open space of the yard in Palembangby region with certain density.Dataanalysisused in thisresearch is a quantitative analysis based on questionnaires which collected from respondents whom have privatehome yard. Non-parametricstatisticaltests using the Mann-Whitney test to analyze the differences between the regions. Statistical tests of correlation Spearman rank and Somers&#39;dusedto analyze the relationship between variables.The results showed the highscore of community attitude, while the participation of the community belong in the low score...

A recent study to providing valid checklist of stingrays species in South Sumatran waters provide 14 species: Brevitrygon heterura, Fluvitrygon kittipongi, Fluvitrygon oxyrhyncha, Fluvitrygon signifier, Fluvitrygon sp ‘musi’ 1, Fluvitrygon sp ‘musi’ 2, Himantura undulata, Himantura uarnak, Maculabatis gerrardi, Pateobatis fai, Pateobatis uarnacoides, Pastinachus ater, Telatrygon biasa  and Urogymnus polylepis. Distributional patterns of stingrays in South Sumatran waters are depend on species or (at least) genus level. Stingrays in South Sumatran waters are recorded from of up to more 100 km inland to the coastal zone area. Following IUCN Red List status, 10 species of stingrays are threatened with status Endangered, Vulnerable and Data Deficient; suggest the South Sumatran waters are important habitat for stingrays in Indonesia.

Kinetic and thermodynamic adsorption study of Cr(VI) ion in aqueous solutions by dried Oscillatoria Splendida biomass was investigated in the batch system. The Oscillatoria Splendida was isolated and cultured from algae swamp ecosystem in South Sumatera. The adsorption properties of Cr(VI) onto dried Oscillatoria Splendida biomass was studied by the influences of contact time, initial Cr(VI) ion concentration and temperature of reaction. The experimental results were the rate of adsorption followed the second-order kinetic model with the rate of reaction k2 is 0.00181 mg g-1 min-1 and the adsorption thermodynamic agree to the Langmuir’s model with amount of  Cr(VI) removed from aqueous solution increased with increasing  Cr(VI) concentration with the higher adsorption energy was 8.46 kJ/mol at 50 °C.

Studies of adsorption of Cu(II) on algae biomass (Oscillatoria Splendida) isolated and cultured from algae swamp ecosystem in South Sumatera have been carried out. These studies included determination of pH and kinetic biosorption at various contact time, isotherm and biosorption capacity of interaction between Cu(II) onto algae biomass (Oscillatoria Splendida). The result showed that the optimum pH was 5, and the optimum contact time was 30 min. Biosorption capacity of algae biomass (Oscillatoria Splendida) toward Cu (II) was 55.15 mg/g and agree to Pseudo-Seconds-Order kinetic model with the rate of reaction k2 is 0.00642 mg g−1 min−1 and the adsorption thermodynamic agree to the Langmuir’s model.

Adsorption of procion red and congo red dyes using microalgae Spirulina sp was conducted. Spirulina sp was obtained by cultivation and production in laboratory scale. Spirulina sp was used as adsorbent for adsorption of dyes. Adsorption process was studied by kinetic and thermodynamic in order to know the adsorption phenomena. The results showed that kinetically congo red is reactive than procion red on Spirulina sp. On the other hand, thermodynamically procion red was stable than congo red on Spirulina sp which was indicated by adsorption capacity, enthalpy, and entropy.

The Giant Freshwater Stingray Urogymnus polylepis (Bleeker, 1852) has been known from several drainages in Sunda land (Sumatra, Kalimantan and Java). We compiled most recent update records of U. polylepis in Indonesia based from local social media and internet supported with photographs or other evidences. There are 42 total records of U. polylepis in Indonesia. From those reports, there are 13 new records of U.

Background: Malaria is still one of the main infectious diseases of concern in the world.  Lahat Regency is a moderate malaria-endemic area in South Sumatra, where there are still several villages with an API value above 1 and indigenous cases, although the average API value in all health facilities is below 1. Methods: Quantitative research with a case-control design was employed. The sampling technique used stratified random sampling with year strata, namely 2018, 2019 and 2020 with 50 case respondents and 100 control respondents. The total number of samples collected was 150. Case respondents were people who suffered from malaria and are recorded in the Malaria Surveillance Information System in the working area of the community health center, which has a village with an API value of 1 and the presence of indigenous cases. Control respondents were the closest neighbours of cases with the same age characteristics as the case. This study aimed to identify and analyse risk factors f...

SETIAWAN, A., IQBAL, M., PORMANSYAH, YUSTIAN, I. & ZULKIFLI, H. 2020. Recent records of Little Cormorant Microcarbo niger in Sumatra, Indonesia. Marine Ornithology 48: 161–162. We summarize observations of the Little Cormorant Microcarbo niger in Sumatra from 2016 to 2019. Based on these observations, we suggest that Little Cormorant has become widespread in Sumatra.

The analysis relationship of Spirulina sp medium with chemical composition has been conducted. Chemical analysis was performed using X-Ray Fluorescence analysis. Furthermore, potention of Spirulina sp as adsorbent of metal ions was analyzed using FTIR spectroscopy. The results showed that metals such as Zn, Fe, Mn, Ca, Cu, and Mo were mainly metals in Spirulina sp. These metals were not correlated with cultivated medium of Spirulina sp. Analysis of potention Spirulina sp as metal ions adsorbent showed that Spirulina sp has functional groups –C=O and –OH as ligand. Intercation of metal ions Cu(II) and Cr(III) with Spirulina sp indicated that metal ions bond to –C=O functional group. Keywords: Spirulina sp, media composition, chemical content, metal ion, adsorption Abstrak (Indonesian): Telah dilakukan analisis hubungan komposisi media Spirulina sp dengan kandungan kimia yang dimilikinya. Analisis kandungan kimia dilakukan dengan X-Ray Fluorescence. Selanjutnya potensi Spirulina sp se...

Low birth weight (LBW) are most likely a cause of increasing the number of infant mortality rate. The incidence of LBW related to many factors such as maternal health, fetal, and environmental factors. Early detection to see fetal growth during pregnancy is to estimated fetal weight. The purpose of this research was to find out the correlation of maternal age, maternal education, maternal occupation, history of parity and nutritional status with estimated fetal weight. The type of research used was analytical observational study with cross sectional approach and collected using questionnaire with total samples of 72 pregnant women. The result of this research showed that there was correlation of maternal age (p=0,04), maternal education (p=0,012), history of parity (p=0,003), nutritional status (p=0,012) with estimated fetal weight. There was no correlation of maternal occupation (p=0,327) with estimated fetal weight. The concludes of this research was pregnant women with non-risky ...