Bioma

ANALISIS MUTU ORGANOLEPTIK DAN UJI Salmonella sp. PADA IKAN CAKALANG ASAP DI PASAR REMU, KOTA SORONG

Sukmawati Sukmawati, Iksan Badaruddin, Azaria Lobat — Fri, 29 Dec 2023 00:00:00 +0700

Smoked skipjack is a type of product that is sold in many markets in Indonesia, including at Remu Market, Sorong City. However, the quality and safety of smoked skipjack tuna is a matter that needs to be considered by the public as consumers. The research method used was a descriptive study by observing the organoleptic quality of smoked skipjack tuna and detection on Salmonella sp..The results of this study showed that the organoleptic quality value of the appearance of the P sample of smoked skipjack tuna at the Remu market, Sorong city had the highest value of 8.87, then the highest odor test was 8.73, the taste value was 8.93, and the value of the texture was 8.40. However, the value of mushrooms and slime from the three samples showed the same value (9.0) which indicates that there was no fungus and slime in the smoked skipjack tuna observed. The results of the detection test Salmonella sp. showed that the P sample was safe from contamination by Salmonella sp. compared to sample R and sample Q.

STUDI ANATOMI TANAMAN KOMAK KEDIT (Phaseolus lunatus L.) LOKAL DI PULAU LOMBOK

Sri Warni, Muhammad Junaedi — Fri, 29 Dec 2023 00:00:00 +0700

Plant anatomy is one of the important basic data to reveal the potential of a plant. Anatomical data provide an overview of the internal structure of the plant body. This structure is influenced by the environment, the same thing is also likely to occur in Komak kedit plants which are widely planted on Lombok Island. Komak kedit (Phaseolus lunatus L.) is a species of legume (Fabaceae) originating from Central America. The purpose of this study was to analyze the differences or variations in the anatomical structure of the Komak kedit (P. lunatus) on Lombok Island. Data analysis in this research was descriptive qualitative and triangulation. The results showed that the anatomical structure of the roots, stems, leaves, flowers, fruits, and seeds of the Komak kedit plant on Lombok Island had similar structure, such as epidermis, cortex, and stele. However, in this study, there were more differences in the number of stomata on leaves in West Lombok compared to East Lombok, Central Lombok, North Lombok, and Mataram. This was caused by differences in the environment where the plants were planted, such as water content.

EKSPLORASI JENIS AMFIBI DI SEPANJANG PINGGIRAN DANAU SIPIN JAMBI, SUMATERA TENGAH

Ade Adriadi, Asrizal Paiman, Rini Indriani — Fri, 29 Dec 2023 00:00:00 +0700

This study aimed to determine the diversity of amphibian species in different habitat types along shore of Lake Sipin. This study used a combination of path (Transect) and VES (Visual Encounter Survey) methods. Research area was determined using purposive sampling based on the function of the habitat and the number of prey animals. The population in this study was all amphibians in the Sipin Lake. The samples were all amphibians caught using fishing nets or bare hands. Identification of amphibian species found in the lake used field guidebooks and online-based guide. The results of research carried out along the edge of Lake Sipin showed 215 individuals, 8 species and 4 families were found to be amphibians. The diversity index for amphibian species generally shows an H' index with an H' value of 1.19, which is included in the medium diversity index value. The overall amphibian species evenness index value is classified as an unstable community (E=0.573) and the amphibian species richness index value generally shows a low species richness index (Dmg=1.303). Meanwhile, the value of the community similarity index or Index of Similarity (IS) generally shows that natural habitats and tourism are relatively high with an index value of 90%.

DISTRIBUSI KAWASAN MANGROVE DI PULAU POTO KABUPATEN BINTAN MELALUI PENGINDERAAN JAUH

Fri, 29 Dec 2023 00:00:00 +0700

Mangrove is a unique vegetation type growing along the coastline and estuarine in tropical and subtropical countries. Mangroves in Indonesia are distributed in all major islands and small islands from Aceh on westside stretched to Papua on the east. This study is to monitor the mangrove area in Poto island a small island part of Kabupaten Bintan, Province of Riau Kepulauan. The difference in spatial resolution of remote sensing data Sentinel 2A and Pleiades were used to classify the land use including the mangrove area. The supervised classification by maximum likelihood classification showed the high-resolution image using Pleiades has higher accuracy for mangroves 81.99% and overall accuracy 90% (kappa 0.86) compared to Sentinel 2A for mangrove 72,34% and overall accuracy 80% (kappa 0.73). The mangrove area approximately 257 ha is strip-lining along the coastline with the largest mangrove area located on the southside of the island. Further research is to identify the mangroves’ formation and the serial condition of mangroves on the different times.

ANALISIS PROFIL GEN IRT PADA TANAMAN PADI (Oryza sativa L.) DENGAN MENGGUNAKAN MARKA SSR DAN SNP TERHADAP KONDISI CEKAMAN BESI

Rizky Priambodo, Adisyahputra, Alma Fahira — Fri, 29 Dec 2023 00:00:00 +0700

Badan Pusat Statistik reported that rice production in 2019 decreased by 2.63 million tons (7.75 percent) when compared to 2018 production. Efforts to increase national rice production can be made by utilizing swamp land as rice production land. The high concentration of Fe in swamp land is an obstacle in its utilization. Selection of iron stress tolerant rice strains is needed . The purpose of this study was to determine the iron stress tolerant swamp rice strains and the relationship of tolerance levels in rice strains based on SSR (Simple Sequence Repeats) and SNP (Single Nucleotide Polymorphism) markers. The results showed that the rice strains tolerant to 1600 ppm FeSO4 stress was Siam Saba. Four of the 11 SSR markers used showed polymorphism, namely RM 125, RM 180, RM 320, RM 336. Cluster analysis showed that 4 rice strains were divided into 2 main groups with a similarity coefficient of 0.66. The first group consists of swamp rice (Siam Saba and Siam Tanggung) and the second group consists of paddy rice (Ciherang and INPARI 34). Analysis with SNP markers showed 12 SNP points. There was a deletion mutation at position 1007 bp and an insertion mutation at position 1151 bp.

KEANEKARAGAMAN FITOPLANKTON DI DANAU KENANGA UNIVERSITAS INDONESIA, JAWA BARAT

Fri, 29 Dec 2023 00:00:00 +0700

In addition to urban forest area at the University of Indonesia, Depok Campus, West Java, there are lakes that functions as water reservoir area. University of Indonesia is eager to create green and beautiful campus environment with one of its efforts is to care for the lake ecosystem in the campus. This study was conducted to analyze the diversity of phytoplankton in the lake. Sampling was carried out by determining 3 location points with 3 times repetitions conducted on different days. The water samples taken were then identified at the Biology Laboratory FMIPA UNJ. The mean values of water quality parameters obtained were pH 10, TDS 90 ppm, temperature 30°C, and water clarity 46 cm. The results showed that 14 genera and 20 species have been found, they are Chlorophyta, Chroococcus, Coelosphaerium, Crucigeniella, Euglena, Gloeocapsa, Merismopedia, Pediastrum (3 species), Peridinium, Scenedesmus (4 species), Tablelaria, Tetrastrum, Volvox, and Westella (2 species). The Diversity Index Shannon-Wiener during the observation was 2.9, which means that the condition of water at the University of Indonesia Lake was very good and not polluted. The availability of phytoplankton in the area was generally sufficient which can be utilized by other organisms as food source.